Tesis sobre el tema "Flexible firm"
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Allan, Cameron y n/a. "Labour Utilisation in Queensland Hospitals". Griffith University. Griffith Business School, 1996. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050906.171638.
Texto completoAllan, Cameron. "Labour Utilisation in Queensland Hospitals". Thesis, Griffith University, 1996. http://hdl.handle.net/10072/367208.
Texto completoThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith Business School
Griffith Business School
Full Text
Hetterich, Elisabeth Anna Maria. "Promotion and succession management and associated retention issues in Australian law firms". Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/54735/1/Elisabeth_Hetterich_Thesis.pdf.
Texto completoGueye, Mouhamadou. "Magnetic thin films on flexible substrates : magnetomechanical study by ferromagnetic resonance". Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCD007/document.
Texto completoThin films deposited on flexible substrates have been widely studied in the last decades due to the numerous applications in flexible electronics. Recently, flexible electronics have been extended to magnetic materials leading to the so-called emerging feld of flexible magnetoelectronics which is actually at the cutting-edge of spintronics research topics.This thesis is devoted to the study magnetomechanical properties of magnetic thin films (Ni, NiFe, Co2FeAl, CoFeB, FeCuNbSi) on flexible substrates. Structural analysis have 130 Abstracts hown that the Ni and CFA films are found to be polycrystalline with no strong preferred orientations ; the CFB film is amorphous. Consequently, the elastic and magnetoelastic properties are isotropic. For the study of the magnetomechanical properties, a set-up based on a jointly use of deformation test (bending or piezoactuation), ferromagnetic resonance (FMR) and digital image correlation (DIC) have been developped. Thanks to this method, it is possible to follow the evolution of the inescapable residual anisotropy encountered in magnetic thin films on flexible substrates under deformation and to determine the effective coefficient of magnetostriction of the films (sometimes unknown).This residual anisotropy is ascribed to contrasted mechanical strength when a sti thin film is deposited on a compliant substrate. The effect of the annealing temperature on the elastic and magnetoelastic have been studied carefully in CFB validating then theinterest on such alloys for spintronics applications. Finally, we have employed FMR inits sweep frequency mode to study the effective evolution of magnetization direction as function of the voltage-induced strains. A 90-degree magnetization rotation in Co2FeAl thin film on Kapton® polyimide substrate is observed
Rossi, Leonardo. "Flexible oxide thin film transistors: fabrication and photoresponse". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14542/.
Texto completoLyberaki, Antigone. "Small firms and flexible specialisation in Greek industry". Thesis, University of Sussex, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329789.
Texto completoHu, Ying. "Robustness of flexible endplate connections under fire conditions". Thesis, University of Sheffield, 2010. http://etheses.whiterose.ac.uk/14969/.
Texto completoPalekis, Vasilios. "CdTe/CdS Thin Film Solar Cells Fabricated on Flexible Substrates". Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3280.
Texto completoDong, Hanpeng. "Microcrystalline silicon based thin film transistors fabricated on flexible substrate". Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S173/document.
Texto completoThis work deals with the development of microcrystalline silicon thin film transistors (TFTs) fabricated on flexible substrate at low temperature (T=180 °C). The first step of this work consists in studying the electrical stability of TFTs. The N-type TFTs fabricated on glass substrate are electrically stable under gate bias stress VGStress= +50V at T=50 °C. The threshold voltage shift (ΔVTH) was only 1.2 V during 4 hours. This electrical instability of TFTs is mainly due to carrier trapping inside the silicon nitride gate insulator. The second step of this work lies in the study of the mechanical behavior of the TFTs. Both tensile and compressive strains were applied on TFTs. The minimum curvature radius is r=1.5 mm for both tension and compression. The main limitation of TFTs comes from the mechanical strain εlimit of silicon nitride used as gate insulator of TFTs. Also, these TFTs are mechanically reliable: the variation of ION current was only 1% after 200 cycles mechanical bending. These results obtained open the way to the development of flexible electronics that can be folded in half.Finally, TFTs have been fabricated using different gate insulators in order to improve the mobility. Unfortunately, all the gate insulators used couldn’t improve mobility without sacrificing electrical stability of TFT. More detailed studies and complementary optimization of these gate insulators are necessary
Hodges, Deidra Ranel. "Development of CdTe thin film solar cells on flexible foil substrates". [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0003210.
Texto completoVidor, Fábio Fedrizzi [Verfasser]. "ZnO thin-film transistors for cost-efficient flexible electronics / Fábio Fedrizzi Vidor". Paderborn : Universitätsbibliothek, 2017. http://d-nb.info/112762833X/34.
Texto completoShih, Andy. "Flexible and solution-processed organic thin film transistors for high voltage applications". Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/117842.
Texto completoThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged student-submitted from PDF version of thesis.
Includes bibliographical references (pages 257-270).
6,13-Bis(triisopropylsilylethynyl)pentacene and pentacene high-voltage organic thin film transistors (HVOTFTs) were fabricated on solid and flexible substrates via a low temperature (< 120 °C) solution-processed and vacuum-deposited fabrication methods, achieving breakdown voltages and on/off current ratios beyond -550 V and 10⁶ A/A, respectively, a first of its kind. The HVOTFT design was based on a dual channel architecture, where a gated region enabled FET capabilities and an offset region accommodated the high-voltage. An HVOTFT capable of driving high-voltages ([V[lower case DS]] > 100 V) while being controlled by a relatively low gate-to-source voltage ([V[lower case GS]] < 50 V) will enable new applications on arbitrary and flexible substrates, such as large electrostatic MEMS actuators, electroactive polymers, novel displays, field-emitter arrays for digital x-ray imaging as well as photovoltaic systems on glass. A high-k dielectric Bi₁.₅Zn₁Nb₁.₅O₇ and a low-k organic dielectric parylene-C were incorporated into the HVOTFT process to improve threshold voltage and mobility. Field plate designs and self-assembled monolayers were also explored to enhance the HVOTFT's electrical characteristics by directly controlling the charge carrier distribution within the channel or by improving the charge carrier injection into the organic semiconductor. Moreover, a self-shearing drop cast deposition method has been employed for the HVOTFT for the first time, growing large and highly oriented organic semiconductor grains. Solution-processing will enable room-temperature, air ambient and large-area depositions techniques, reducing fabrication overhead. Furthermore, a self-aligned solution-processing method based on surface energy engineering was developed with self-assembled monolayers to create pre-patterned organic semiconductor channels without the need for etching.
by Andy Shih.
Ph. D.
Zhang, Panpan, Sheng Yang, Roberto Pineda-Gómez, Bergoi Ibarlucea, Ji Ma, Martin R. Lohe, Teuku Fawzul Akbar, Larysa Baraban, Gianaurelio Cuniberti y Xinliang Feng. "Electrochemically Exfoliated High-Quality 2H-MoS₂ for Multiflake Thin Film Flexible Biosensors". Wiley-VCH, 2019. https://tud.qucosa.de/id/qucosa%3A73171.
Texto completoJeong, Yesul. "Investigation of low-temperature solution-processed thin-film transistors for flexible displays". Thesis, Durham University, 2016. http://etheses.dur.ac.uk/11507/.
Texto completoVenkataVikram, Dabbugottu. "FPGA Implementation of Flexible Interpolators and Decimators". Thesis, Linköpings universitet, Elektroniksystem, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-89761.
Texto completoHoffmann, Eva [Verfasser], Jörg [Akademischer Betreuer] Breitkreutz y Peter [Akademischer Betreuer] Kleinebudde. "Flexible Arzneistoffbeladung orodispersibler Filme durch Bedrucken / Eva Hoffmann. Gutachter: Jörg Breitkreutz ; Peter Kleinebudde". Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2012. http://d-nb.info/1028072325/34.
Texto completoFratelli, Ilaria. "Flexible oxide thin film transistors: device fabrication and kelvin probe force microscopy analysis". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13538/.
Texto completoHakemi, Ghazal. "Fabrication, development and analysis of film bulk acoustic resonators on flexible polymer substrates". Thesis, Cranfield University, 2010. http://dspace.lib.cranfield.ac.uk/handle/1826/4488.
Texto completoChen, Hsiao-Wen y 陳筱雯. "The Effects of Working-time Reduction on Firms and their Corresponding Strategies: The Flexible Firm Perspective". Thesis, 2004. http://ndltd.ncl.edu.tw/handle/03238797620564558883.
Texto completo國立臺灣科技大學
企業管理系
92
This research investigated the longitudinal effects of working-time reduction on firms and firm’s corresponding strategies. ‘Employing flexible’ firm and ‘externalization’ perspectives, the study explored the relationship between positive or negative effects of working-time reduction and bundle corresponding strategies, and to examine the ‘substitute’ or ‘ supplementary’ effects among bundle strategies. Surveying 2,094 firms, the research findings are as follows: (1) The greatest negative effect of working-time reduction is increase of operation cost. On the other hand, working-time reduction can increase the job satisfaction. (2) Firms employed functional flexibility strategy the most, and wage flexibility strategy the least. (3) After about two year’s working time reduction, the effects of labor shortage and making employees work more efficiently increased and the effect of delaying the working schedule decreased. The corresponding strategies of distribution of working-time, speeding up the upgrading of industrial structure and improving the R&D ability, reducing the range of adjusting pay, changing the management or operating procedures, and closing the less-efficiency production line or plant became more utilized by firms. On the contrary, the strategy of changing employees’ monthly pay to piece-rate system became less used. (4) The positive effect of working-time reduction was less related to the functional flexibility strategy. Besides, firms used numerical and external flexibility strategies to encounter the negative effect of raising operation cost. And firms used wage flexibility strategy to encounter the negative effect of training and appraising difficultly. (5) Internal flexibility strategy was positive related to external flexibility strategy. Among three internal flexibility strategies, functional flexibility strategy was most related to external flexibility strategy, and wage flexibility strategy was least related to external flexibility strategy. (6) For the substitute or supplementary effects among bundle strategies, wage and functional flexibility strategies had complementary effect. Functional, numerical, and wage flexibility strategies also had complementary effect. Functional, wage, and external flexibility strategies were also complementary. On the contrary, numerical and external flexibility strategies had no complementary effect.
Chen, Wei-ming y 陳威明. "Studying Of The Flexible Firm Model - CTCI Corporation-Engineers & Constructors As A Case Study". Thesis, 2007. http://ndltd.ncl.edu.tw/handle/93986997088578147424.
Texto completo國立高雄第一科技大學
運籌管理所
95
Abstract Under the growing competition of globalization and rapid shifting of the global environment, businesses and organizations should adequately make use of the resource flexibility to enhance the organizations’ mobility, responsiveness and adaptability. However, the most essential resource of a business is “human resource”, thus, this study tend to analyze the flexible firm model from a broader viewpoint of logistics management. This study examines how organizations and businesses make use of various human labor combinations to realize the purpose of human resource flexibility, in hope to help businesses to create edges and sustainable competitiveness while facing external challenges. This is a case study on CTCI Corporation, a leading enterprise in the turn-key contract industry, in-depth interviews are conducted. The results indicated that: 1.The human labor managing model of the CTCI flexible firm utilizes the strengths and weaknesses of their human power to form the best human resource combination model, this could help to meet the need of saving time, human force supply and technical demands, and it can also help to cut costs. 2.Through human resource flexibility, CICI flexible firm is able to implement the flexible development of their human resource management. The company is then able to enhance the flexibility of production operation, to improve business organization’s ability to respond to changes and to better the overall performance of the organization. 3.CTCI flexible firm established a series of employment model. These models not only brought the organization with abundant human resource but also provided a flexible allocation mechanism. It has potential influences in the development of business logistics management.
Luo, Lu. "Firm internal labor markets, flexible staffing, high performance work systems, and training in the United States". 2002. http://purl.galileo.usg.edu/uga%5Fetd/luo%5Flu%5F200205%5Fma.
Texto completoShiue, Gwo-huei y 薛國輝. "A Study on the Relationship of Strategic of Flexible Human Resources Management and Firm Performance for State-run Enterprise -------- A Case Study of Department of Power Equipment Repair and Maintenance of Taiwan power Company". Thesis, 2007. http://ndltd.ncl.edu.tw/handle/89108231585037368328.
Texto completo義守大學
管理研究所碩士班
95
Under the impact of liberalization and privatization of power industry, Taiwan Power Company (Taipower) is losing its competitive edge as a state monopoly. A great challenge facing Taipower is how to adopt to the fast changing environment by adjusting its manpower structure. A more flexible human resource strategy will then be essential to taipower for enhancing its competitiveness and diversification. In response to the shortage of energy, skyrocketing fuel price, regulation of power price and deregulation of power industry, most of the power plants in the world started to find out how to improve operating performance and to reduce the operating cost. As for Taipower, except for some new generator sets, most or its generating equipment is outdated, resulting in high maintenance expenses and personnel cost. Under the pressure for surviving in the competitive market, Taipower’s maintenance department has to resort to some strategies in order to improve its working efficiency and be more competitive. The characteristics of power maintenance industry include: capital, technique and labor intensive, having learning curve, economy of scale, customer satisfaction and having seasonal factor etc. Therefore, Stategic Human Resource Management (SHRM) will be an important topic for the Department of Power Equipment Repair and Maintenance of Taipower if it is to become the bench-marking company in the competitive environment of maintenance industry. The organization should treat human resource management as a strategic partner and adjust its human resource management strategies in response to the different environmental and organizational needs. Then, the organization should fine out the best human resource management activity to improve its performance. This thesis is a case study of the Department of Power Equipment Repair and Maintenance of Taipower. By collecting internal information (including business data, management document and in-depth interviews) as well as literature review, the study aims to identify a set of flexible human resource management strategies to improve organizational performance. The findings of the study include: 1.Flexible human resources management strategies have positive effects on organizational performance. 2.Flexible human resources management strategies can promote the maintenance technique of the organization. 3.Flexible human resources management strategies have positive effects on customer satisfaction.
Ribeiro, J. F. "Flexible thin-film lithium battery". Doctoral thesis, 2015. http://hdl.handle.net/1822/40562.
Texto completoRechargeable energy storage relies mainly on lithium-ion battery technology, the same that supports most of the mobile world. This technology is under research by many groups around the world and is still considered the best way to store electrical energy from intermittent power sources. However, battery technology is limiting the evolution of many integrated electronics, especially in wearable applications; improvements in terms of energy density, higher number of life cycles, flexibility and safety are still needed. In thin-film batteries, the selection, the design structure, fabrication process and characterization of materials as well as film deposition techniques play an important role in the maximization of the battery performance, durability and reproducibility. This thesis contributes to battery technology in several ways. The use of a typical flexible substrate (Kapton®, by Dupont™) while fabricating all battery materials in the same chamber, including barrier and encapsulation materials, excluding the necessity for extra vacuum and glove-box chambers, was researched. Using only safe solid-state materials, on which no leakage or explosions can occur and replacing metallic lithium (Li) anode for a much more “friendly” material in terms of fabrication and battery cycling, battery energy density benefits. The thin-film lithium phosphorous oxynitride (LiPON) electrolyte is required to have high ionic conductivity, a negligible electrical conductivity and to be stable in contact with the anode and cathode electrodes. LiPON electrolyte was deposited by RF sputtering at different experimental conditions. The highest ionic conductivity of 1 x 10-6 S/cm was measured at ambient temperature of 35 ⁰C for a film deposited with power supply of 150 W, 20 sccm of nitrogen (N2) and a deposition pressure of 3 x 10-4 mbar. Samples with a silicon nitride (Si3N4) barrier layer, a titanium (Ti) adhesion layer and a platinum (Pt) cathode current collector layer (Kapton/Si3N4/Ti/Pt) were prepared for flexibility experiments of Kapton® substrate. Si3N4 Li barrier layer was deposited by RF sputtering deposition technique with an electric resistivity of 9.51 x 1011 Ωcm and a mean breakdown field of 1.67 MV/cm. Thin-films continued attached to the substrate after several bends. Lithium cobalt oxide (LiCoO2) cathode was deposited on top of Kapton/Si3N4/Ti/Pt structure. After LiCoO2 deposition, annealing at 400 ⁰C was performed during 1 hour at different atmospheres (vacuum and air). The films annealed in air atmosphere presented higher crystallinity, especially in the plane (101), the orientation required for batteries with improved performance and durability. Cathode LiCoO2 films were deposited by RF sputtering with a 120 W power supply, pressure of 6 x 10-3 mbar and 17/3 sccm of Ar/O2 gases, respectively. A thin-film flexible Li battery and a thin-film flexible Li-ion battery were successfully fabricated using only physical vapour deposition (PVD) techniques. The anodes of metallic Li (for Li-battery) and germanium (Ge) (for Li-ion battery) were deposited 3 μm thick by thermal evaporation and 300 nm thick by e-beam, respectively. A well-organized battery structure with smooth interfaces and good adhesion was observed by scanning electron microscope (SEM) analysis. A self-discharge was measured and related to a possible thinner electrolyte in some area between the cathode and the anode on both fabricated batteries. A low potential and retention fading along charge/discharge cycles were also measured and related to an amorphous LiCoO2. Despite the low capacity presented by the two batteries, an improvement when the Li anode was changed to Ge is evident (0.35 nAh/cm2 with Li anode, to 46 nAh/cm2 with Ge anode). A battery encapsulation with three sputtered layers: lithium phosphorous oxide (LiPO), LiPON and Si3N4, each 20 nm thick, was fabricated. After these depositions and at atmospheric conditions, an epoxy was applied on the PVD multilayer to complete the encapsulation for long term protection. Research indicates it is possible to fabricate flexible thin-film Li batteries on Kapton® substrate using only PVD deposition techniques, avoiding the necessity of extra vacuum and glove-box chambers.
O armazenamento de energia elétrica recarregável baseia-se principalmente na tecnologia de baterias de iões de lítio, a mesma que suporta a maior parte do mundo móvel. Esta tecnologia está sob investigação por muitos grupos ao redor do mundo e ainda é considerada a melhor forma de armazenar energia elétrica a partir de fontes de energia intermitentes. No entanto, a tecnologia das baterias está a limitar a evolução da eletrônica integrada, especialmente em aplicações portáteis; melhorias em termos de densidade de energia, maior número de ciclos de carga/descarga, flexibilidade e segurança ainda são necessários. Em baterias de filme fino, a seleção, a estrutura, o processo de fabricação e caracterização dos materiais, bem como as técnicas de deposição dos filmes, desempenham um papel importante na maximização do desempenho, durabilidade e reprodutibilidade da bateria. Esta tese contribui para a tecnologia das baterias de várias maneiras. A utilização de um substrato flexível típico (Kapton®, por Dupont™), enquanto todos os materiais da bateria são fabricados na mesma câmara, incluindo os materiais para encapsulamento e barreira, excluindo a necessidade de câmaras de vácuo e câmaras de luvas extra, foi investigada. Utilizando apenas materiais seguros e em estado sólido, em que derramamentos ou explosões não podem ocorrer, e substituindo o ânodo de lítio (Li) metálico por um material muito mais "amigável" em termos de fabricação e de carga/descarga da bateria, a densidade de energia da bateria beneficia. O eletrólito de filme fino de oxinitreto fosfato de lítio (LiPON) deve ter elevada condutividade iónica, condutividade elétrica negligenciável e ser estável em contacto com o ânodo e cátodo. O LiPON foi depositado por pulverização catódica de radio frequência (RF sputtering) em diferentes condições experimentais. A maior condutividade iónica (1 x 10-6 S/cm) foi medida à temperatura ambiente de 35 ⁰C para um filme depositado com 150 W na fonte, 20 sccm de azoto (N2) e 3 x 10-4 mbar de pressão durante a deposição. Amostras com uma camada de barreira, nitreto de silício (Si3N4), uma camada de adesão, titânio (Ti), e uma camada de coletor de corrente do cátodo, platina (Pt), (Kapton/Si3N4/Ti/Pt) foram preparadas para as experiencias de flexibilidade do substrato de Kapton. A camada de barreira aos iões de lítio, Si3N4, foi depositada por RF sputtering com uma resistividade elétrica de 9.51 x 1011 Ωcm e uma tensão média de rotura de 1.67 MV/cm. Os filmes finos continuaram em cima do substrato após várias dobragens do mesmo. O cátodo de óxido de lítio cobalto (LiCoO2) foi depositado no topo da estrutura Kapton/Si3N4/Ti/Pt. Após a deposição do LiCoO2, um recozimento a 400 ⁰C foi realizado durante 1 hora a diferentes atmosferas (vácuo e ar). Os filmes recozidos em atmosfera de ar apresentaram maior cristalinidade, especialmente no plano (101), a orientação necessária para baterias com melhor desempenho e durabilidade. Os filmes de LiCoO2 foram depositados por RF sputtering com 120 W na fonte, 6 x 10-3 mbar de pressão e 17/3 sccm de gases Ar/O2, respetivamente. Uma bateria de Li e uma bateria de Li-ion, flexíveis e em filme fino, foram fabricadas com sucesso usando apenas técnicas de PVD. Os ânodos de Li metálico (para a bateria de Li) e germânio (Ge) (para a bateria de Li-ion) foram depositados com 3 μm de espessura por evaporação térmica e 300 nm de espessura por feixe de eletrões, respetivamente. Uma estrutura bem organizada, com interfaces regulares e boa adesão entre os filmes foram observados na bateria por microscopia eletrónica de varrimento (SEM). Auto-descarga foi medida e relacionada com uma área mais fina entre o eletrólito e o cátodo em ambas as baterias fabricadas. Um baixo potencial e um enfraquecimento na retenção de carga ao longo dos ciclos de carga/descarga também foram medidos e relacionados com o facto de o LiCoO2 ser amorfo. Apesar da baixa capacidade apresentada pelas duas baterias, uma melhoria quando o ânodo de Li foi alterado para o ânodo de Ge é evidente (0.35 nAh/cm2 com ânodo de Li e 46 nAh/cm2 com ânodo de Ge). Um encapsulamento para a bateria com três camadas: óxido fosfato de lítio (LiPO), LiPON e Si3N4, cada uma com 20 nm de espessura, foi fabricado por RF sputtering. Depois destas deposições e em condições atmosféricas, uma epóxi foi aplicada sobre a multicamada fabricada por PVD, para completar o encapsulamento para a proteção a longo prazo. A investigação indica que é possível fabricar baterias de Li em filme fino no substrato flexível Kapton®, utilizando apenas técnicas de deposição por PVD, evitando assim a necessidade de câmaras de vácuo e de luvas suplementares.
Fundação para a Ciência e a Tecnologia (FCT) SFRH/BD/78217/2011.
CRUP AI TC-09_14 and KNMF 2014-011-003169.
Pacheco, Abílio Carlos Pereira. "Flexible design of forest fire management systems". Doctoral thesis, 2017. https://hdl.handle.net/10216/110071.
Texto completoPacheco, Abílio Carlos Pereira. "Flexible design of forest fire management systems". Tese, 2017. https://hdl.handle.net/10216/110071.
Texto completoHsu, Pin-hung y 徐賓鴻. "Fabrication of Flexible Thin Film CuInSe2 Solar Cell". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/6m3r26.
Texto completo國立中山大學
材料科學研究所
96
In this research, CuInSe2 thin film is grown at 350℃ low temperature by photo-assisted co-evaporation system to fabricate PI (polyimide) substrate flexible thin film solar cells. The low temperature growing CuInSe2 is analyzed by raman spectroscopy. Besides, sputtering Mo thin film on PI and CIS/Mo/PI contact properties are also researched for device fabrication. By studying the Ar pressure and Mo internal stress relationship during the deposition, the Mo layer has been fabricated with both low resistivity and good adhesion. The sheet resistance of Mo layer is 1.95 Ω/□ and shows ohmic contact with CuInSe2 at temperature below 350℃. Raman spectroscopy shows that photo-assisted CuInSe2 has stronger and thinner A1 peak than which without light. Two-stage growing can help eliminating Cu2Se and background signals further. CA structure vibration modes are involved in the asymmetric A1 peak broadening. The SLG/Mo/CIS/CdS/ZnO:Al/Al structured device has open voltage, Voc = 0.320 V, short cut current, Isc = 3.61 mA, and solar cell fill factor, FF = 49.8 %. On the other hand, PI/Mo/CIS/CdS/ZnO:Al/Al structured device has open voltage, Voc = 0.318 V, short cut current, Isc = 2.71 mA, and solar cell fill factor, FF = 39.0 %。
Chen, Syuan-Yi y 陳宣亦. "Fabrication of flexible CIGS thin film solor cells". Thesis, 2013. http://ndltd.ncl.edu.tw/handle/67153801282158104544.
Texto completo聖約翰科技大學
自動化及機電整合研究所
101
CIGS has become one of the most important materials of thin film solar cells because of its high absorption efficiency. This work investigates the processing parameters of flexible CIGS solar cells. The Mo conducting films is sputtered on stainless steel shells, and utilizes CuGa and In targets to sputter CIG precursor films on the Mo/stainless steel substrates. Then, combines the CIGS absorption layers with high temperature selenization. The surface roughness, micro structure, composition, crystallization, residual stress, and conductivity of the CIGS are characterized by the 3D profiler, scanning electronic microscope, energy dispersive spectrometer, X-ray diffraction machine, and Hall effects meter. Various precursor CuGa/In ratios are studied. The results show that the CIGS fabricated with sputtering 30 min In first, then sputtering CuGa and keeping CuGa/In=1/2 behaves the best performance. It is because that deposition In precursor at first can prevent it loses during high temperature selenization and improves the crystallization and conductivity of CIGS.
Xuan, Jiangzhi y 姜智軒. "Flexible thin-film transistors in gas sensor applications". Thesis, 2013. http://ndltd.ncl.edu.tw/handle/69356715475873292398.
Texto completo國立彰化師範大學
光電科技研究所
102
In this thesis, we study the characteristics of flexible organic thin film transistors and its application to gas sensor. In first section, we have fabricated the pentacene, one of the most popular organic semiconductors, thin film transistors with/without buffer layer on PET substrate. With suitable buffer layer on PET substrate, the transistors’ performance could be dramatically raised, such as the field effect mobility was raised orders and achieved an average of 1 cm2/vs. Next, the pentacene transistors were measured under compressive and tensile status with different curved radius. At flat condition, the device has a mobility of 0.88 cm2/vs, then it downgraded to 0.74 cm2/vs after tensile stress at curved radius 2.5 cm. However the mobility was enhanced slightly at compressive status with curved radius 1.5 cm. Those phenomena could be owing to the tiny rearrange of pentacene molecule at different curved status and would be detail discussed in thesis. Finally, a gas sensor with above mentioned pentacene transistor structure was measured in ambient gas, nitrogen gas, oxygen gas and water vapor, respectively. It shows that pentacene was sensitive to oxygen and water, but not nitrogen. Pentacen transistors also need a longer recovered time for exposure to water, 27 sec, than the recovered time for exposure to oxygen, 3.3 sec.
"Mixed Oxide Thin Film Transistors for Flexible Displays". Master's thesis, 2011. http://hdl.handle.net/2286/R.I.9409.
Texto completoDissertation/Thesis
M.S. Chemical Engineering 2011
Chang, Hung-Ming y 張鴻銘. "Study of Thick-Film Capacitors on Flexible Substrates". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/91545258032881052599.
Texto completo義守大學
電子工程學系碩士班
98
The capacitors were fabricated on flexible substrates by using spin coating process various ratio of high dielectric constant ceramic materials were mixed with low dielectric constant resins by a triple roller. The effect of high permittivity materials on the dielectric properties were investigated. In addition, conductive materials were added in to the matrix to increase dielectric constant of composites. Dielectric properties of the composite depend on the amount of high permittivity ceramics and higher amount of ceramics result in higher dielectric constant. The dielectric constant of 25wt% al added 50wt% BaTiO3+50 wt%ITK5517 specimen is 127 measured at 1kHz and dissipation factor is 0.05. The addition of conductive Al particles greatly enhance dielectric constant of the composites.
Chen, Kuan-Ru y 陳冠如. "Vibration of a Flexible PVDF Piezoelectric Film Loudspeaker". Thesis, 2013. http://ndltd.ncl.edu.tw/handle/4e8fh5.
Texto completo國立宜蘭大學
機械與機電工程學系碩士班
101
VDF, a piezoelectric polymer, is suitable for flexible devices because of its flexibility and lightweight. In this article, the authors adopt commercial PVDF film to make a film loudspeaker. The proposed film loudspeaker is a sandwiched membrane structure which contains a PVDF film sandwiched in between two silver electrode-layers. An audio signal is applied to the PVDF film, which responds by the mechanical deflection in proportion to the voltage applied across the PVDF film, thus converting electrical energy into mechanical vibration. Therefore, the coupled electromechanical characteristic of the compound membrane dominates the performance of the loudspeaker. This work is to find the resonant frequencies and vibration mode shapes of the proposed PVDF film loudspeaker as well as its frequency response over the audible range (20 Hz – 20 kHz). To measure the dynamic response of the PVDF film loudspeaker to driving voltage, the authors make a test frame by acrylic plates. The PVDF film loudspeaker is clamped in the test frame by four screws. A sine-wave AC voltage is applied on the PVDF film loudspeaker by a function generator. The driving frequencies are scanned in the audible range, namely 20 Hz to 20 kHz. The vibration of the PVDF film loudspeaker is measured by a laser Doppler Vibrometer. This article studies on the coupled electromechanical characteristic of the compound membrane of the PVDF film loudspeaker. In the near future, the design of the PVDF film loudspeaker can be optimized according to the results of this work.
Chen, Zhi-Hong y 陳志宏. "Nickel-based thin film supercapacitior electrodes on flexible substrates". Thesis, 2015. http://ndltd.ncl.edu.tw/handle/8e9g7h.
Texto completo義守大學
材料科學與工程學系
103
In this study, electroless Nickel and Nickel – Cobalt coatings were deposited on three kinds of flexible substrates (graphite paper, titanium foil, carbon fiber paper), and these coatings further etched in a 5M HNO3 solution to improve the electrochemical characteristics. Using a three-pole electrode system, cyclic voltammetry and charge-discharge curve were measured to calculate the specific capacitance, and electrochemical impedance spectroscopy (EIS) was used to analyze the electrochemical reaction mechanisms. In addition, the effects of Ni/Co ratios of Ni-Co-P system and etching time on the microstructure and the specific capacitance were explored in details. The results showed that nickel-phosphorus coating on the graphite paper substrate exhibited the highest specific capacitance (71 F/g) than the others (Titanium foil: 30 F/g; carbon fiber paper: 52 F/g) under the same plating conditions. After etching in HNO3 solution for 10s, the specific capacitance of Ni-P coating on graphite paper increased up to 335 F/g, in which the specific capacitance of Ni-P coating increase to 4.7 times as compared with the unetched one. Once the etching time was further increased, it did not significantly increase the specific capacitance. Microstructures analysis revealed that an appropriate etching time can effectively increase the surface area of Ni-P coatings and the prolonged etching time damaged the Ni-P coatings and finally the etched coatings peeled off. To deposit Ni-Co-P coatings on graphite paper, the pH value of electroless bath should be changed into 9. The specific capacitance value is not significantly improved by the addition of Co, but the corrosion resistance of the coating is improved. After etching in 5M nitric acid solution, it also significantly raised specific capacitance, for Ni/Co=70/30 system, at a scan rate of 10mV/s, from 51 F/g to 237 F/g. Based on the above the results, the acid-etching treatment effectively increased the specific capacitance of the Ni-P and Ni-Co-P system, it is expected that such method be applied to other material systems.
Chang, Jason y 張繼升. "The Study of Flexible Positive Temperature Coefficient Resistor Film". Thesis, 2007. http://ndltd.ncl.edu.tw/handle/67485655902686279225.
Texto completo國立清華大學
化學工程學系
94
This study is mainly to discuss the positive temperature coefficient (PTC) effect of Polymer Conductive Composite (PCC), which includes the preparation for Ni composite particle, polyimide and polystyrene-co- butylacrylate matrix, particularly the temperature-resistance behavior of composite films. What would be the impact to PTC feature for composite film, by changing the combination of above factors, as well as the process, is our major interest in overall study. The study consists of 3 main topics: Part I. Micro Ni-plated SiO2 particle/polyimide matrix system Part II. Core-shell type P(S-DVB) Ni-plated particle/P(S-co-nBA) matrix system Part III. The thickness-direction PTC feature of micro Ni powder/ polyimide matrix system
Jian, Jyun-Ruei y 簡俊睿. "Nanocomposite Dielectric for Flexible a-IGZO Thin Film Transistors". Thesis, 2012. http://ndltd.ncl.edu.tw/handle/64518185030217261386.
Texto completo國立中興大學
光電工程研究所
100
In this thesis, we study a nanocomposite dielectric for flexible a-IGZO Thin Film Transistors, it combines both organic polymer PVP and inorganic nanoparticle aluminum oxide to perform the gate dielectric.The uniqe advantage of the gate dielectric is that simple and solution process, first we find the optimization parameter of gate dielectric which used as a MIM structure, and we spin coated the gate dielectric in the glass and PEN substrate.In combination of both organic and inorganic gate dielectric electrical characterization was well and good, and we found two major advantages one is thate always in the enhancement mode, and the other one is robust when it is bending more than one hundred times.The TFT performance was without adding Al2O3 was exhibit 0.48 cm2/V-s of mobility, 0.3 V of threshold voltage, 104 of on off ratio and 0.98V/dec of subthreshold swing, and after adding the Al2O3 the TFT was improved to 5.01 cm2/V-s of mobility, 1.9 V of threshold voltage, 106 of on off ratio and 1.2V/dec of subthreshold swing.
Chu, Yung-Ching y 朱詠慶. "Design of Flexible Thin-Film Antenna Using Silver Nanoparticles". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/24796101650920252376.
Texto completo明新科技大學
電機工程系碩士班
103
In this paper, three materials including glass epoxy (FR4), polyimide film (PI) and photo paper (PP) are used as the substrate of antenna. IE3D software is used to design planar dipole antennas with various substrates.The fabricated planar dipole antenna with FR4 substrate can be applied to 1200MHz and 1800MHz frequency bands, the antenna withPI substrate can be applied to 2100MHz, 4800MHz and 5800MHz frequency bands, and the antenna with PP substrate can be applied to 5300MHz and 5600MHz frequency bands. In this study, the size parameter L2 and the substrate material of antenna are changed to observe the variations of antenna characteristics. The PI film thickness and curing process are discussed in this thesis.The thickness of PI substrate about 0.12mm and two vacuum curing processesare obtained to achieve betterimpedance value. Changing L2 parameters of planar dipole antennas with FR4 substrate, two antennas are proposed in this study.The antenna withbandwidth from1070MHz to 1370MHz,reflection loss -29.3dB and the maximum gain 4.296dBi at 1200MHz can be used for 1200MHz wireless monitors. The antenna with bandwidth from 1.78MHz to 1.98MHz,reflection loss -32.3dB and maximum gain 3.593dBi at 1800MHz can be used in LTE 1800MHz. With suitable L2 parameter, the inkjet printer is used to print silver nanoparticles and fabricate three flexible thin-film antennas with PI substrates. The bandwidths of these antennas are from 1500MHz to 2500 MHz,4200 MHz to 4950 MHz and 5400 to 5800 MHz.The reflection loss is -17.6dB and maximum gain is 2.183dBi at 1200MHz. The reflection loss is -38.9dB and maximum gain is 3.509dBi at 4800MHz. The reflection loss is -16.4dB and maximum gain is 3.599dBi at 5800MHz. These antennas can be applied to LTE 2100MHz, C-Band 4800MHz, and WLAN (801.11ac) 5800MHz frequency bands. PP substrate, suitable L2 parameter, and silver nanoparticles are used to produce three flexible thin-film antennas with PP substrates. The bandwidths of these antennas are from 5100MHz to5500MHz, 4600MHz to 5400MHz, and5300MHz to 5700MHz.One antenna exhibits reflection loss-22.5dB,maximum gain3.257dBi at 5300MHz and another antenna with reflection loss -37.6dB andmaximum gain4.175dBiat 5300MHz. The reflection loss is -32.4dB and the maximum gain is 4.834dBi at 5600MHz. These antennas can be applied to WLAN (801.11ac) 5300MHz, WLAN (801.11ac) 5600MHz. Keywords: planar dipole antenna, silver nanoparticles, flexible thin-film,LTE, WLAN, PI, PP.
Chen, Po-Ti y 陳柏棣. "Flexible All-Solid-State Lithium Ion Thin Film Batteries". Thesis, 2015. http://ndltd.ncl.edu.tw/handle/20598439433715125342.
Texto completo國立臺灣師範大學
物理學系
103
In our life, there are more and more portable electronic devices and wearable electronic devices when the technology is improving all the time. Therefore, the requirement of batteries is more important now. Because all-solid-state thin film battery feature with good safety and high energy density, it is much potential for the development of future work. In our experiment, we try to make all-solid-state thin film batteries. We use ruby mica scratchfree to be the substrate. First, we deposit platinum by direct current sputtering as a current collector. Then, we deposit lithium cobalt oxide (LiCoO2) cathode material and lithium phosphorus oxynitride (LiPON) solid electrolyte on the platinum current collector by radio frequency sputtering. Finally we fabricate the lithium metal and aromatic polyurea to be the anode material and encapsulation by thermal evaporation. We use the furnace and rapid thermal annealing (RTA) to heat the cathode material, and control the heating rate of machine. We use x-ray diffraction to analyze the crystalline structure. Scanning electron microscope is used to observe the surface morphology, and capacity test is able to decide the chemical properties of cathode material. In the part of solid electrolyte, we use hot plate to heat the LiPON film in different temperature. And we measure the electrochemical impedance spectroscopy to calculate the ion conductivity. Using the rapid thermal annealing (RTA) at the rate of 260oC/min is a good way to heat the LiCoO2 film. And we use hot plate at the 200oC to do the heat treatment of LiPON film. Finally, we use the thermal evaporation to evaporate the lithium metal. The complete all-solid-state thin film battery can do the cycle test and light the LED.
Grey, Paul. "Development of electrochromic thin-film transistors on flexible substrate". Master's thesis, 2014. http://hdl.handle.net/10362/14327.
Texto completoAo, Yi-Chieh y 敖以杰. "Studied on Characterization of Flexible Transparent Conducting Oxide Film". Thesis, 2007. http://ndltd.ncl.edu.tw/handle/52995587187548771908.
Texto completo國立高雄應用科技大學
化學工程系碩士班
95
At present, TCO material is often applied in the manufacturing of LCD, plasma screens, and in flat-panel displays as panel electrode film material. However, the main application is using the physical vapor deposition (PVD) based vacuum evaporation method or magnetic enhanced sputtering to deposit thin film metal TCO, such as indium tin oxide (ITO). This glass material substrate has such disadvantages as fragility, heaviness, and the failure to fit in the continuous rolling manufacturing procedure. Along with the introduction of the roll to roll production model into flexible manufacturing procedures of panels, some transparent conducting films using polymer flexible material as the substrate to form flexible transparent conducting film, have the potential to be future electrode materials of flexible displays. Few studies on the physical properties of flexible transparent conducting film have been conducted; therefore, a series of physical properties of flexible transparent conducting film were in this study researched to provide reference for manufacturers to further develop flexible displays. This study makes use of the low resistance range in order to measure the chip resistor of flexible transparent conducting film, for addressing the influence of annealing temperature on resistor. Through the measurement of two-dimension apparatus, we are able to acquire the dimension changes of flexible transparent conducting film before and after annealing, to observe the influence of annealing temperature on the dimension stability of material, to examine whether annealing temperature will change the surface structure, element composition and content, or if it will lead to major defects via SEM and EDS. In addition, aqueous solution containing 5% acetic acid is used for etching conducting film to examine the influence of temperature on the etching speed on conducting film. In the end, Osuka optical inspection equipment and a haze meter are used to the measure the influence of light transmission and haze after substrate is applied on the conducting film.
Hsiao-Yung, Chen y 陳孝庸. "Industrial ecology study on the flexible PVC film industry". Thesis, 2005. http://ndltd.ncl.edu.tw/handle/79597139088874470868.
Texto completo國立臺北科技大學
環境規劃與管理研究所
93
Corporate sustainability has a challenge, for it not just tries to create financial benefits, but also intents to pursue “win-win” vision for achieving both economic development and environmental protection. Leading company, such as 3M has carried out innovative “cleaner production” and “waste minimization” programs since 80s’, which resulted in accomplishing various environmental goals, as well as creating 750 million USD of financial benefits. PVC industry, although contributes quite a lot to the Taiwan’s economic miracle during past decades, has long being considered as a highly polluted and “unhealthy” industry. In order to realize the vision of sustainability, PVC firms in Taiwan have gradually switched their traditional end-of-pipe treatment techniques to the innovative measures, such as waste minimization, cleaner production, pollution prevention and industrial ecology for improving the resource productivity. These approaches enhance business image, also help company to cut-cost as well. In this study, flexible PVC film industry is selected for analyzing the possibility of forming an eco-industrial system for PVC industry. A flexible PVC film factory is used as a case study to examine the pathways, strategies and benefits of forming such an eco-industrial system. The study also intentionally tries to evaluate and verifies the continuum of industrial symbiosis theory through the flexible PVC film industry. It is concluded that the benefits found from the case study, both ecological and economical, prove that industrial ecology system formed within PVC industry will benefit not just industry itself, but also the environment and whole society.
Hsieh, Chin-Chih y 謝欽智. "ZnO-Cdot/nanofiber composite film electrode for flexible DSSC". Thesis, 2018. http://ndltd.ncl.edu.tw/handle/8g7g25.
Texto completo國立臺灣科技大學
化學工程系
106
This thesis was describes a composite of 2,2,6,6-tetramethyl-1-piperidinyloxy radical (TEMPO) oxidized cellulose nanofibers (TOCNFs), Zinc oxide (ZnO) and carbon dots (Cdots) used as a photoanode and a composite of TOCNF and polypyrrole(PPY) as a counter electrode which was applied on the dye-sensitized solar cell. TOCNF was prepared based on the TEMPO-mediated oxidation procedure, and ZnO nanorods(ZnO NR) and ZnO nanowires(ZnO NW) and Cdots were prepared by hydrothermal method. And ZnO nanoparticle (ZnO NP) was prepared by polyol method. ZnO NR was in-situ grown on TOCNF, the composite of TOCNF and ZnO NR was prepared, and this was used as a photoanode in dye-sensitized solar cell. ZnO NP optimized 100 mg was loaded on TOCNF-ZnO NR electrode, the energy conversion efficiency 0.05 % was obtained from this electrode. The weight ratio of ZnO NP with Cdots was optimized 1/0.6 and loaded on the TOCNF-ZnO NR electrode. The energy conversion efficiency 0.117% was obtained from this electrode. The ratio of COOH: NH2 in Cdots was optimized 1:1.5, then energy conversion efficiency was 0.18%, could be enhanced from 0.18 to 0.246% by changing ZnO NP to ZnO NW. TOCNF-ZnO NW electrode which was loaded ZnO NP and Cdots had better photovoltaic performance than TOCNF-ZnO NR electrode which loaded ZnO NP and Cdots, and the energy conversion was increased from 0.18 to 0.4%.
Jheng, Wei-Wun y 鄭偉文. "Flexible Strain Sensors Based on Gold Nanoparticle Thin Film". Thesis, 2018. http://ndltd.ncl.edu.tw/handle/gnk3yw.
Texto completo國立中興大學
奈米科學研究所
106
A high-sensitive, low-cost and portable strain sensing technology based on gold nanoparticles (AuNps) is developed. For this goal, AuNPs were self-assembled on flexible substrates, forming closely packed multilayer films by centrifugal method, followed by appropriate chip packaging technique. AuNPs were modified with 3-mercaptopropionic acid(MPA), which has a length of about 0.9nm. As such the typical resistance of our sensors are in the range of 1-20 MΩ. When strains are applied to the substrate, the distance between adjacent AuNPs is changed, inducing the variations on the device resistance and capacitance. The sensors made on polydimethylsiloxane (PDMS) substrate may have the gauge factor up to 430. It can sense the pressure change with a sensitivity of 0.396kPa^(-1). The nominal power consumption is very low, about 15~24 nW. The capacitance change with a sensitivity of -36.4 and 22.5. For studying the response time, sensors were tested under mechanical vibrations of different frequency. The resistance change can be clearly identified up to a vibration frequency of 1 kHz. With the different frequency response, the sensors can find theirs applications in human pulse sensing, motion detection, and voiceprint recognition.
LIN, SIN-JHIH y 林鑫志. "Electrochromic Properties of LiWO3 Thin Film on Flexible Substrate". Thesis, 2019. http://ndltd.ncl.edu.tw/handle/r4k2j7.
Texto completo正修科技大學
電機工程研究所
107
In this study, the LixWO3 powder was fabricated by WO3 mixed with Li2O. The electrochromic films were prepared by electron beam evaporation. It was expected that the amount of charges storage could be enhanced by using the doping method, which makes the optimal performance of electrochromic devices (ECD). By constructing the ECD structure of Li0.2WO3/ Gel-electrolyte / ITO PET, the optimal characteristics of ECD are obtained at applying voltage of 1.8V, in which, the transmittance change (ΔT%) is 33%, the optical density (ΔOD) is 7.56, the intercalation charge (Q) is 5.94 mC/cm2 and the color efficiency (η) is 92 cm2/C at wavelength of 550 nm, respectively. The transmittance of colored state increases from 7% to 38% after 24 hour without biased voltage at R.T. The previous study was deposited the optimal properties on the glass substrate and this study was deposited on the PET substrate. This study was worse than the previous study because when PET was prepared by hot pressing, the films have cracking and peeling which will let the devices become uneven during coloring/bleaching.
Sun, Yu-Xiang y 孫毓詳. "Fabrication of CuInSe2 Thin Film Solar Cell on Flexible Substrate". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/p3zfnp.
Texto completo國立中山大學
材料科學研究所
96
This paper describes an investigation into the fabrication of absorber layer CuInSe2 films by co-evaporation process. And we used the stainless steel substrates to manufacture Al / ZnO:Al /ZnSe(CdS) / CuInSe2 / Mo /SiO2 / Stainless Steel(SS) flexible thin-film solar cell. In this study, we fabricated the main absorber layer CIS thin film by co-evaporation process including two steps, and CIS thin films parameters were estimated by sheet resistance. Under one-sun (AM1.5,100mW/cm2) conditions solar simulator, we compared the solar cell with different thickness of absorber layer, co-evaporation process and composition to improve solar cell performance. The energy conversion efficiency of the CIS thin-film solar cell (Al/ AZO/ CdS /CIS/Mo/ SLG) was 4.5﹪(Voc =0.38 V,Jsc = 30.5 mA ,FF = 38.6 ﹪), flexible solar cell (Al/AZO/CdS/CIS/Mo/SiO2/SS) was 2.6%( Voc =0.2 V,Jsc = 41.7 mA ,FF = 31.2 %).
Kao, Ming-Chun y 高銘駿. "The manufacture of cover layer on flexible metallic reflector film". Thesis, 2012. http://ndltd.ncl.edu.tw/handle/pf88u9.
Texto completo國立臺北科技大學
有機高分子研究所
100
The flexible reflector film is a kind of high reflectivity and low light transmittance function of diaphragm, which is widely used in 3C products. Currently available reflector film can be divided in three type, such as (1)cyclical multilayer reflector film (2)metal reflecor film (3)white reflector film. Among those, metal reflector film is easier processable than cyclical multilayer reflection film, and has better work wavelength range and the reflection rate than white reflector film. However, metal reflecor film is easily oxidized in air. Therefore, a layer of cover layer is necessary to to protect the metal layer.. In this thesis, a cover layer with white ink coating on metallic reflector using roller to roller coating process is presented. Two metallic reflector films (Ag and Al) are investigated. Applying white ink coating, the metallic reflector films showed the reflectivity increased 2% and total light transmittance decreased 2%. The resulting film has passed after the weathering test.
Tsai, Yu-Min y 蔡裕民. "Deposition ITO film and produced MIM capacitance on flexible substrate". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/62419066658737567618.
Texto completo國立雲林科技大學
電子與資訊工程研究所
94
ABTRACT In this study we use Indium-Tin Oxide (ITO) to deposit films on flexible substrate as the conductive electrode used for flexible display. Besides we produced MIM capacitance and measured electrical properties to improve the character of ITO films. ITO films were deposited by Rf reactive magnetron sputtering. We design several conditions such as RF power, substrate temperature, process pressure, and the distance between ITO target and substrate to obtain better films of transparent conducting oxide. At the result we obtained good electrical and optical properties. The resistance ratio of ITO films is 5.67×10-4 Ω•cm and The UV-visible spectra indicate that the average optical transmittance of ITO films is around 83% in the visible range by 4-inches ITO target. And then we produced MIM capacitance, used HfO2 and Al for dielectric layer and upper electrode. We also deposit Ti film used for buffer layer and used Ar plasma treatment to improve the quality of ITO films. Finally we find the best condition with 5 min and 3 min Ar plasma treatment on the surface of flexible substrate and ITO films that we obtained the best electrical properties.
Chen, Tzung-Da y 陳宗達. "Analysis of Flexible Organic Thin-Film Transistors under Bending Strains". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/10664551643855492895.
Texto completo國立交通大學
顯示科技研究所
98
In this study, we fabricated flexible organic thin-film transistors on stainless steel substrates, and their electrical characteristic were measured under different bending conditions. We found that the electrical characteristic was increased under compressed strain and decreased under tensile strain. From the analysis of the results, we deduced that the variety of intermolecular force change the device characteristic under bending strain states. mechanical strains influence the barrier height between the grains of pentacene thin-films, thereby resulting in the variation of device characteristic.
Yu, Sang-Lung y 余頌龍. "Fabrication of Pentacene Organic Thin-Film Transistor on Flexible Substrate". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/72199943612879943309.
Texto completo國立暨南國際大學
電機工程學系
94
The purpose of this thesis is to fabricate pentacene organic thin-film transistors (TFT) on flexible substrate﹐measure and study their electrical characteristics. Fabricating organic TFT on plastic substrate as switching device is necessary for the flexible display and the so-called electronic paper. Although, displays made from organic materials have been developed and even commercialized in recent years, improvements in some of their characteristics, such as carrier mobility, are still needed. Conventionally, most TFTs are fabricated on inorganic silicon wafer or glass substrate because silicon or glass substrate can endure high processing temperature. On the other hand, low processing temperature of organic TFTs allows them to be fabricated on plastic substrate. In this work, we tried to fabricate a OTFT on a flexible substrate, the PET(polythylene terephthalate). According to the literature, organic TFT using pentacene as the active layer can have the highest mobility which is about 3cm2V-1S-1. Therefore, we used pentacene as the active layer for our organic TFT. In this thesis we successfully demonstrated the fabrication of pentacene organic TFT on PET plastic substrate. The highest mobility of our OTFT is only about μ 0.04 cm2V-1S-1 due to high gate leakage current and the plastic substrate shrinkage during thermal processing. The substrate shrinkage and gate leakage current are likely to be eliminated by adopting alternative device structure so that high-temperature damage during source/drain evaporation can be avoided, and by carefully performing flexible substrate pre-cleaning process as well as pre-heating the flexible substrate to reduce substrate shrinkage during subsequent processing.
"Flexible Electronics Powered by Mixed Metal Oxide Thin Film Transistors". Doctoral diss., 2016. http://hdl.handle.net/2286/R.I.37039.
Texto completoDissertation/Thesis
Doctoral Dissertation Chemical Engineering 2016
Lee, Pei-Hsuan y 李佩璇. "Mechanical Analysis and Applications of Hard Film on Flexible Substrate". Thesis, 2005. http://ndltd.ncl.edu.tw/handle/12420420038119390710.
Texto completo國立成功大學
工程科學系碩博士班
93
This study consider the influence to the residual strain affected cooling process, the elastic mechanical analysis of hard film on flexible thick substrate inducing externally bending force, then apply the discussion of failure criteria on Flexible Organic Light-Emitting Diode and Inorganic ceramic films about their hard film thickness. As the change of film thickness in analysing, stiffness per unit area ratio of hard film and soft substrate is 0.03~3, and stiffness per unit area ratio of soft film and hard substrate is ~ . Stiffness of the hard film obviously rises with increase of the film thickness, and it causes sizable influence to strain and damage. But influence of soft film seems insignificant to compare with hard substrate. From the analysis of FOLED(Flexible Organic Light-Emitting Diode),one can see a tendency that the net strain distribution of bending structures was smaller for specimens with thinner ITO coating thickness, and in FOLED device ,barrier layer is also a critical factor for film net strain. Suggesting that use of moisture and oxygen barrier layer with high Young’s modulus to increase structure stiffness and then reduce ITO film strain, it can improve the reliability and life of devices. In the analysis of the multi-layer film of ceramics, we can obtain the largest thickness of evaporated SiOx under different bending radius of curvature, let the ceramic films avoid producing the crack in using. And from the analytic result of the ceramics multi-layer film , offer the suggestion of best buffer layers thickness for designer.
Zeng, Bing-Ruei y 曾炳瑞. "Hysteresis-free Photopatternable Dielectrics for Flexible Organic Thin-Film Transistors". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/90355715899274635936.
Texto completo國立交通大學
顯示科技研究所
97
Polymer gate dielectrics are the most promising dielectric candidates for organic thin-film transistors (OTFT). In this study, we used photo cross-linked polymers as the photopatternable polymer dielectric layer. Two kinds of photopatternable polymer insulators, polyvinyl alcohol (PVA) and polyvinyl cinnamate (PVCN). Thermally evaporated pentacene and gold were used as the active layer and the source-drain electrodes.The result showed that PVA-based devices have large hysteresis, which was probably due to the OH groups of PVA. On the other hand, PCVN-based devices exhibited hysteresis-free performance. Moreover, the PCVN-based devices also have higher on/off ratios and the devices were more air-stable. For the bending measurements, we observed no significant decay of the field-effect for the devices made on flexible stainless substrates.