Academic literature on the topic 'P3OT'

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Journal articles on the topic "P3OT"

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Basnayaka, Punya A., Pedro Villalba, Manoj K. Ram, Lee Stefanakos, and Ashok Kumar. "Photovoltaic properties of multi walled carbon nanotubes - poly(3-octathiophene) conducting polymer blends structures." MRS Proceedings 1493 (2013): 139–44. http://dx.doi.org/10.1557/opl.2013.406.

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AbstractIn the present study, we have studied photoelectrochemical properties of poly(3-octathiophene) (P3OT), blending with multi-wall carbon nanotubes (MWCNTs). P3OT blended with MWCNTs was characterized using Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM), Raman spectroscope, and Cyclic Voltammetry (CV) techniques, respectively. The photoelectrochemical current of the MWCNs-P3OT based cell under illumination was investigated by applying a voltage. The blend consisting of 10% MWCNTs in P3OT gave the promising photocurrent in 0.2 M tetra-butyl-ammonium-tetrafluoroborate (TBATFB), electrolyte. Experimental results indicate that photocurrent obtained from MWCNT-P3OT was three times higher than simple P3OT-based conducting polymer. The electrochemical responses of MWCNT-P3OT films in different electrolytes such as 0.2M TBATFB, 0.2 M LiClO4, 1 M H2SO4 and 0.2 M LiBF6 were investigated for comparative photocurrent properties of the photoelectrochemical cell.
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Esselink, F. J., and G. Hadziioannou. "Transmission electron microscopy study of the indium/P3OT and aluminium/P3OT interfaces (P3OT is poly (3-octylthiophene))." Synthetic Metals 75, no. 3 (December 1995): 209–12. http://dx.doi.org/10.1016/0379-6779(96)80010-5.

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Ali Al - Saidi, Imad Al Deen Hussein, Hussein Falih Hussein, and Arafat Hady Kareem. "PREPARATION AND OPTICAL PROPERTIES CHARACTERIZATION OF P3OT - PMMA POLYMER BLEND FILMS." International Journal of Research -GRANTHAALAYAH 7, no. 10 (June 14, 2020): 238–46. http://dx.doi.org/10.29121/granthaalayah.v7.i10.2019.392.

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The optical properties of the Poly (3 - octylthiophene) (P3OT) – Poly (methyl methacrylate) (PMMA) polymer blend films at different percentage weight ratios of P3OT polymer were prepared using casting method. The optical absorbance and transmittance spectra of these films were measured in the wavelength range 300 – 1100 nm for different weight ratios of P3OT polymer using UV-Visible double - beam spectrophotometer. These optical spectra were used to determine the optical properties of the prepared polymer films. The main optical parameters of the polymer blend film, such as, reflectance (R), absorption coefficient (α), extinction coefficient (k), refractive index (n), real and imaginary parts of dielectric constant (εr and εi), and optical energy band gap (Eg), were determined. The effect of the weight ratio of P3OT polymer on these parameters was studied. The results showed that the prepared P3OT – PMMA polymer blend films exhibited suitable optical properties for the applications of solar cells, optical sensors, and photonic devices.
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Rodrigues, Maia, Cristina Bento, Edson Laureto, Morozin Zaia, Moreira Therézio, Gregory Moore, and Santana de. "Spectroscopic analysis of the structure and stability of two electrochemically synthesized poly(3-alkylthiophene)s." Journal of the Serbian Chemical Society 78, no. 4 (2013): 507–21. http://dx.doi.org/10.2298/jsc120327111r.

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In this work, poly (3-methylthiophene) (P3MT) and poly (3-octylthiophene) (P3OT) films were synthesized electrochemically in non-aqueous media through the oxidation of the monomers, (3-methylthiophene and 3-octylthiophene), using a standard three-electrode cell in acetonitrile with 0.100 mol L-1 LiClO4. The polymeric thin films were deposited on platinum plates for optimal quality control of the process. It was observed that the material as-prepared for the anodic electropolymerization undergoes a natural process of de-protonation as a function of time. Moreover, the partial dedoped form, obtained in NH4OH solution, presents a good chemically stabilite form but, when radiated with blue light again becomes unstable. Films obtained by these methods have been characterized by cyclic voltammetry, Raman and photoluminescence spectroscopy. Both Raman and photoluminescence (PL) spectra results led to the characterization of two structures (pristine and non-pristine forms of thiophene rings) which formed the P3MT and P3OT polymer chain. These results were associated with the stabilization of pristine chains and mixed chains (non-pristine structures), radical cation and dication forms, in the polymeric film. Their bands in the Raman and PL spectra are wide and asymmetric and their adjustments by Gaussian functions were necessary, indicating that there are three distinct contributions to the vibration and two to the emission spectra in the formed polymeric material.
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Wang, Ji Gang, Yong Sheng Wang, Da Wei He, Hong Peng Wu, Hai Teng Wang, Pan Zhou, Yong Na Zhang, and Ming Fu. "Performance of Co-Donor Photovoltaic Devices Based on Graphene-Accceptor System." Advanced Materials Research 396-398 (November 2011): 2471–75. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.2471.

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The poly (2-methoxy-5-(2-ethylhexyl oxy)-1, 4-phenylenevin- ylene) (MEH-PPV) was used as a secondary electron donor material in the poly (3-octylthiophene) (P3OT): graphene bulk-heterojunction photovoltaic cell. The XRD investigation of the active layer showed a well-organized intraplane structure with lamellae oriented normal to the substrate. The mechanism of charge transfer in the multi-donor PV cell was investigated; it shows that efficient energy transfer takes place from MEH-PPV to P3OT. The reason for the increase in the open-circuit voltage which dues to the band structure of BHJ where the energy level change of the highest occupied molecular orbital of the MEH-PPV: P3OT as multi-donor. The hybrid devices showed the energy conversion efficiency of the multi-donor BHJ solar devices with moderate amount of MEH-PPV. The surface roughness investigation indicated the morphology of the hybrid active layer film.
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Erb, Tobias, Sofiya Raleva, Uladzimir Zhokhavets, Gerhard Gobsch, Bernd Stühn, Matthias Spode, and Oliver Ambacher. "Structural and optical properties of both pure poly(3-octylthiophene) (P3OT) and P3OT/fullerene films." Thin Solid Films 450, no. 1 (February 2004): 97–100. http://dx.doi.org/10.1016/j.tsf.2003.10.045.

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Chen, Wei-Hsin, Tsung-Hsien Lee, Mu-Ting Su, and Wei Lee. "Electro-Optical Properties of Photovoltaic Cells Based on P3OT-Liquid-Crystal and P3OT-Nanomaterial Blends." Journal of the Chinese Chemical Society 57, no. 5B (October 2010): 1172–75. http://dx.doi.org/10.1002/jccs.201000169.

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Dias, Yoav, and Rachel Yerushalmi-Rozen. "Entropic effects in carbon nanotubes-templated crystallization of Poly(3-alkyl thiophenes, P3HT, P3OT)." Polymer 54, no. 23 (November 2013): 6399–405. http://dx.doi.org/10.1016/j.polymer.2013.09.057.

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Pérez-García, B., J. Abad, A. Urbina, J. Colchero, and E. Palacios-Lidón. "Surface potential domains on lamellar P3OT structures." Nanotechnology 19, no. 6 (January 23, 2008): 065709. http://dx.doi.org/10.1088/0957-4484/19/6/065709.

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Hajlaoui, Mohsen Elain, Aida Benchaabane, Zied Benhamed, Nourdine Mahdhi, Ahmed A. Al-Tabbakh, and Fayçal Kouki. "Dielectric properties of poly-(3-octylthiophene) thin films mixed with oleic acid capped cadmium selenide nanoparticles." RSC Advances 10, no. 73 (2020): 45139–48. http://dx.doi.org/10.1039/d0ra09236c.

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Dissertations / Theses on the topic "P3OT"

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Ballet, Jérôme. "Contribution à l'élaboration de composants électroniques organiques à base de poly(3-octylthiophène)." Phd thesis, Université Paul Sabatier - Toulouse III, 2006. http://tel.archives-ouvertes.fr/tel-00131179.

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Le travail présenté dans ce manuscrit concerne l'étude et la réalisation de diodes et de transistors à couches actives polymères. Le polymère utilisé pour cette étude est un poly(3-octylthiophène) régio-régulier synthétisé par M. Delabouglise du Laboratoire d'électrochimie et de physico-chimie des matériaux et des interfaces (LEPMI). Cette étude constitue le premier travail dans le domaine de l'électronique organique au sein du LAAS.
Le premier chapitre constitue une revue assez exhaustive des travaux de la littérature dans le domaine. Nous avons notamment détaillé les principes de conduction dans les matériaux organiques en rappelant l'importance des orbitales moléculaires dans le déplacement des charges. Cet état de l'art a aussi consisté à faire un inventaire des principaux matériaux organiques référencés dans la littérature et de comparer leurs performances.
La suite du manuscrit fait état de technologie de mise en œuvre et la caractérisation des diodes à base de P3OT. Le 2ème chapitre décrit donc les différentes étapes technologiques permettant d'aboutir aux diodes. Elles sont basées sur le principe d'une mono-couche de P3OT prise en sandwich entre une anode en ITO et une cathode métallique. Nous avons identifié à partir des caractéristiques électriques des diodes réalisées les modèles les plus adaptés à la description de leur comportement. Une étude capacitive a notamment permit de révéler la présence d'une charge d'espace à l'interface métal/polymère.
Le 3ème chapitre aborde la réalisation de transistors de type TFT à base de P3OT. Nous avons extrait de la caractérisation de ces composants une mobilité par effet de champ de 4,1.10-5 cm².V-1.s-1. Nous avons, aussi, mis en exergue l'augmentation de la mobilité en fonction de la tension de grille. La présence importante de pièges à l'interface SiO2/P3OT ou dans le volume du matériau a été mise en évidence. Le vieillissement de nos transistors a aussi été abordé, notamment lors de leur exposition à l'oxygène.
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Hamidi, Sakr Amer. "Thin films of polythiophenes oriented by epitaxy and high-temperature rubbing : correlations with optical, charge-transport and thermoelectrical properties." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAE019.

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Le but de cette thèse est d'étudier l'effet de l’alignement et le contrôle de la morphologie de films minces de polythiophènes et de les corréler avec les propriétés optiques, de transport de charges et thermoélectriques. Puisque les polymères semiconducteurs sont intrinsèquement anisotropes, il est essentiel de les aligner afin de comprendre leur propriétés. Cette étude a été réalisée en employant deux techniques qui ont permises d’obtenir des films minces orientés. Le brossage à haute température et la cristallisation épitaxiale directionnelle (CED) ont conduit à des films de polythiophène hautement orientés avec des paramètres d'ordre allant jusqu'à 0.87 et des taux de crystallinité jusqu'à 65%. La technique de brossage nous a permis de contrôler avec précision les tailles des domaines cristallins dans des films de P3HT brossés. Par cette méthode, nous avons pu également déterminer les températures de fusion à l'équilibre de différents poly(3-alkyl-thiophène). Nous avons appris que la largeur de bande du couplage excitonique W dépend des dimensions des cristaux dans les films minces brossés. Cette étude à aussi montrer l’importance de la planarité des chaînes pontant les domaines cristallins à travers les zones amorphes sur les propriétés de transport de charges. Nous avons également mis en évidence la morphologie particulière du poly (3-butylthiophène) (P3BT) et le rôle des groupements butyles. La méthode de cristallisation epitaxialle a été utilisée pour orienter des films de poly(3-dioctylphenyl-thiophène) (PDOPT). Nous avons examiné l'effet de la masse moléculaire du PDOPT sur le degré de cristallinité et l'alignement. Ceci nous a permis de proposer un modèle structural montrant l’absence de pi-stacking dans ce polythiophène. Finalement, nous proposons une méthode en deux étapes d’élaboration de films minces conducteurs alignés. Le brossage des films puis le dopage des polymères semiconducteurs de type-P a permis d’obtenir des propriétés thermoélectriques anisotropes améliorées.Cette thèse démontre l'importance du contrôle de la morphologie et de l'alignement des polymères semiconducteurs et conducteurs pour comprendre leurs propriétés fortement anisotropes
The aim of this thesis is to study the effect of alignment and morphological control on polythiophene thin films and to correlate this control with the optical, charge transport and thermoelectric properties. Since semiconducting polymers are inherently anisotropic by nature, studying these polymers in the aligned state was essential to understand their properties. This study could be achieved by employing two techniques that are successful in orienting polymers in thin films. High-temperature rubbing (HTR) along with directional epitaxial crystallization (DEC) produced highly oriented polythiophene thin films with order parameters reaching 0.87 and crystallinities up to 65%. HTR was a successful method to control crystal sizes in rubbed poly(3-hexyl-thiophene) P3HT films. By this method, the equilibrium melting temperatures of other poly(3-alkyl-thiophene) P3ATs were calculated. We learned that the free excitonic bandwidth depends on the crystal dimensions in the rubbed thin films. We also learned that the planarity of tie-chains linking consecutive crystalline domains plays a very important role in field-effect mobility. We also discuss the peculiar morphology of poly(3-butyl-thiophene) (P3BT) and the role of the butyl side groups. Then DEC method was proposed to orient poly(3-dioctylphenyl-thiophene) (PDOPT) thin films. We examined the effect of molecular weight of PDOPT on the level of crystallinity and alignment. Consequently, this relation provided fundamental information that helped us refine the crystal structure of PDOPT. Finally, a versatile method to produce highly aligned conducting polymers was proposed. HTR followed by P-type doping proved to be an excellent way to produce highly aligned conducting thin films with enhanced thermoelectric properties. This thesis brings value to the importance of morphology control and the alignment of semiconducting thin films to understand the various properties of these highly anisotropic systems
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Duarte, Daniel André Pires. "Otimização de células solares orgânicas do tipo P3HT." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11349.

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Mestrado em Engenharia Física
No presente trabalho procedeu-se ao fabrico, caracterização e otimização de dispositivos fotovoltaicos orgânicos baseados na arquitetura do tipo bulk heterojunction com uma camada ativa composta por P3HT e PCBM. Inicialmente foi efetuado um estudo na procura da melhor razão de massas entre os compostos orgânicos constituintes da camada ativa. Depois foi abordado um novo mecanismo de otimização baseado no tratamento térmico pós fabrico.
In the present work, the fabrication, characterization and optimization of organic photovoltaic devices was carried out based on the bulk heterojunction architecture, with an active layer made of P3HT and PCBM. Initially a study was done to find the best mass ratio between the organic compounds that constitute the active layer. After that, a new mechanism of optimization based on post fabrication annealing was approached.
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Alet, Pierre-Jean. "Cellules photovoltaïques en couches minces à base de silicium nanostructuré et de polymère semiconducteur." Palaiseau, Ecole polytechnique, 2008. http://www.theses.fr/2008EPXX0055.

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Cette thèse présente un travail exploratoire sur des cellules solaires hybrides, basées sur un matériau inorganique (le silicium) et un polymère (le P3HT). Cette structure a été imaginée pour améliorer les cellules à bas coûts à base de matériaux organiques. Nous démontrons ici sa faisabilité expérimentale et analysons son fonctionnement. L'hétérojonction entre le silicium et le P3HT a été étudiée sur des dispositifs en bicouches planes. Nous montrons qu'elle fournit de l'énergie électrique et que les deux matériaux peuvent contribuer au photocourant. Des rendements de 1,6 % ont été obtenus. Un effort constant a été fait pour simplifier et fiabiliser les procédés de fabrication. Deux nouveaux types de silicium nano-structuré ont été développés. Des ``nano-éponges'', dont la taille typique des pores est de 20 nm, ont été obtenues à l'aide de catalyseurs métalliques par dépôts assistés par plasma à 175 °C. Des nanofils de silicium ont été formés par un procédé inédit : les substrats sont des oxydes transparents conducteurs, les catalyseurs sont générés in situ et la température de croissance est inférieure à 300 °C. La phase würtzite a été mise en évidence dans certains fils, et divers modes de croissance ont été observés. Ces deux nouveaux types de couches minces pourront aussi être utilisées dans des cellules solaires inorganiques
This thesis presents an exploratory work on a new design of hybrid solar cells, which are based on a junction between an inorganic material (silicon) and a polymer (P3HT). This structure is intended to improve the efficiency of organic based solar cells while maintaining low costs. Here, we investigate its experimental feasibility, and we analyze its performance. The hetero-junction between silicon and P3HT has been studied on bilayer devices. We have shown that this junction generates electrical power under illumination, and that both silicon and P3HT can contribute to the photocurrent. Power conversion efficiencies up to 1. 6% have been obtained. A large amount of work has been done to simplify the fabrication process and to improve its reliability. Two new nano-structured silicon layers have been developed. “Nanosponge” layers, where the typical dimension of pores is 20nm, have been obtained by metal-catalyzed plasma-enhanced CVD at 175C°. Silicon nanowires have been grown by a completely new process: the substrates are transparent conductive oxides, the catalysts are generated in situ, and the growth temperature is below 300C°. The würtzite (Si-IV) phase has been identified in some wires, and various growth modes are observed. Both kinds of layers may also find applications in inorganic solar cells
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Al-Busaidi, Zakiya Nasser Khalfan. "Enhanced lifetime of organic photovoltaics based on P3HT: PCBM." Thesis, Durham University, 2017. http://etheses.dur.ac.uk/12435/.

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The short lifetime of organic photovoltaics (OPVs) is a key factor that limits the commercialization of this flexible, low-cost PV technology. The sensitivity of OPVs to water and oxygen in the ambient environment has been found to be the major reason for their degradation. Therefore, techniques to protect the devices from water and oxygen are needed. This thesis introduces new methods designed to reduce the impact of water and oxygen on the lifetime of OPV devices. Two different methods were developed, both using insulating polymers. The first was the addition of an insulating polymer, such as poly (methyl methacrylate) (PMMA), or poly (ethylene glycol) (PEG), to a poly (3-hexylthiophene): [6, 6]-phenyl-C61-butyric acid methyl ester (P3HT: PCBM) OPV blend (ternary approach). It was found that this technique increased the lifetime of the OPVs, due to the ability of the insulating polymers to work as gettering agents for water. The second method that was used is laminating OPVs with an insulating polymer. It was found that this lamination technique enhanced the device lifetime more than the ternary approach due to the creation of a barrier to the ingress of both oxygen and water.
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Freisinger, Birger [Verfasser]. "Investigation of P3HT PCBM particle-based solar cells / Birger Freisinger." Mainz : Universitätsbibliothek Mainz, 2013. http://d-nb.info/1036317927/34.

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Kumar, Avinesh Avi. "Charge transport in semi-crystalline poly(3-hexylthiophene) (P3HT) structures." Thesis, Queen Mary, University of London, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538659.

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Desta, Derese Gugsa. "Study of air-processed Si-NC/P3HT hybrid solar cells." Master's thesis, Universidade de Aveiro, 2010. http://hdl.handle.net/10773/6451.

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Mestrado em Ciência e Engenharia dos Materiais
Neste trabalho são estudadas células solares híbridas formadas por poli(3- hexiltiofeno-2,5-diyl) (P3HT) como condutor orgânico de buracos e nanocristais de silício (Si-NCs) como conductor de electrões inorgânico. Células solares híbridas têm atraído muita atenção nos últimos anos devido ao facto de serem potencialmente fabricadas a baixo custo, a sua flexibilidade e baixo peso. As possibilidades de processamento em solução e ajuste da região espectral de absorção, a baixa toxicidade, e a abundância fazem dos Si-NCs um material atractivo para aplicação em células solares. Si-NCs de elevada qualidade podem hoje em dia ser produzidos em larga escala a partir da fase gasosa através da decomposição de silano num plasma. Embora a superfícies destes Si-NCs seja terminada com ligações Si-H durante a sua síntese, estes desenvolvem uma camada de óxido na superfície quando são expostos ao ar. Até agora, células híbridas de Si-NC/P3HT foram fabricadas com Si- NCs que não foram expostos ao ar após a sua síntese e foram posteriormente estudadas em condições de atmosfera inerte, devido à expectativa de que a exposição ao ar resulta na sua degradação. No entanto, o processamento de dispositivos em atmosfera inerte impõe limitações em termos técnicos e custo. Nesta tese estudamos o efeito do processamento em atmosfera de ar na performance e degradação de células solares híbridas de Si-NC/P3HT. As células foram fabricadas em ar e em atmosfera de azoto e caracterizadas à temperatura ambiente e condições de exposição ao ar. Para produzir a células solares foram usados Si-NCs que foram expostos ao ar após a síntese e que por isso contêm uma camada de óxido na sua superfície. Para remover esta camada, nós usamos um método de erosão química com uma solução diluída de ácido hidroflurico (HF). Células solares fabricadas com uma mistura de 1:1 em percentagem de peso (wt.%) de Si-NC:P3HT não revelaram qualquer efeito fotovoltaico. Dispositivos fabricados com uma mistura de 2:1 wt.% de Si-NC:P3HT mostraram efeito fotovoltaico, devido à formação de uma rede interpenetrara de Si-NC e P3HT em toda a extensão do filme foto activo, tal como revelado em imagens de microscopia electrónica de varrimento. Dispositivos fabricados em atmosfera inerte não revelaram uma performance melhorada em relação aos dispositivos produzido em atmosfera de ar, indicando que a fabricação das células solares em ar não é o factor determinante da performance das nossas células solares. Células solares que mostraram um efeitos fotovoltaico degradaram-se rapidamente por exposição ao ar. Em contrate, filmes de P3HT e de misturas Si-NC/P3HT, estudados em experiências separadas, não revelaram uma degradação significativa por exposição ao ar. Estes resultados indicma que a degradação das células solares não deve resultar da degradação da camada foto activa de Si-NC/P3HT, mas poderá resultar da degradação de interfaces entre as varias camadas que compõem as células. Medidas de ressonância paramagnética electrónica (RPE) foram levadas a cabo com os Si-NCs usados nas nossas células e com Si-NCs usados para fabricar as células estudadas em trabalhos publicados anteriormente por outros grupos. Estas medidas revelaram que o número de defeitos superficiais por nanocristal nos nossos Si-NCs é cerca de três ordens de grandeza superior ao número encontrado nos Si- NCs usados anteriormente. Este facto poderá explicar a baixa performance fotovoltaica os nossos dispositivos.
We study-air-processed organic-inorganic hybrid solar cells, which incorporate poly(3-hexylthiophene-2,5-diyl) (P3HT) as organic hole conductor and silicon nanocrystals (Si-NCs) as inorganic electron conductor. Hybrid solar cells have received a lot of attention in recent years due to their low cost, flexibility and lightweight. Solution processability, nontoxicity, abundance and tunable absorption spectral range of Si-NCs make them attractive materials for application in solar cells. High quality Si-NCs can now a days be produced in large amounts from the gas phase decomposition of silane in a plasma. Although the surface of these Si-NCs is terminated with Si-H bonds immediately after synthesis, they develop an insulating native oxide shell after being exposed to air. So far, Si-NC/P3HT hybrid solar cells have only been fabricated using Si-NCs that have not been exposed to air after synthesis and afterwards characterized under inert atmosphere conditions due to the expectation that air exposure of the devices leads to their degradation. However, inert atmosphere processing has some technical and cost efficiency limitations. In this thesis, we study the effect of air-processing on the performance and degradation of solar cells based on Si-NC/P3HT. Hybrid solar cells were fabricated in air and under nitrogen ambient and characterized at room temperature under atmospheric air. To produce our solar cells we use Si-NCs that have been stored in air after plasma synthesis and, therefore, contain a native oxide at their surface. To remove this oxide layer we apply wet etching with a dilute hydrofluoric acid (HF) solution. Solar cells made from 1:1 wt.% (HF-etched Si-NC:P3HT) composition did not show detectable photovoltaic effect. A very small photovoltaic effect has been observed for devices made from 2:1 wt.% (HF-etched Si-NC:P3HT) composition as a result of the formation of an interpenetrated network throughout the photoactive film at higher NC concentration as seen from scanning electron microscopy. Device fabrication under inert atmosphere did not result in improved solar cell performance. This shows that fabrication of the devices in air was not the main reason for the poor performance of the hybrid solar cells. Moreover, solar cells that exhibited a photovoltaic effect were found to degrade within one day of air exposure. In contrast to this, the conductivity of P3HT, (unetched Si-NC)/P3HT and (HF-etched Si-NC)/P3HT films, studied in separate experiments, did not show significant degradation upon air exposure. These results indicate that the degradation of the solar cells is not due to degradation of individual photoactive layers, but could rather originate from degradation of interfaces between the different layers. Electron paramagnetic resonance measurements carried out with our Si- NCs and with Si-NCs used in previous investigations of Si-NC/P3HT solar cells revealed that the number of surface defects per NC is about three orders of magnitude larger in our NCs than in those used in the previous investigations. This could be a reason for the poor performance of our Si- NC/P3HT hybrid solar cells.
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Liu, Jiang. "P3HT:PCBM Bulk Heterojunction Organic Solar Cell : Performance Optimization and Application of Inkjet Printing." Thesis, Linköping University, Department of Science and Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-14987.

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Organic solar cells have emerged as an important cheap photovoltaic technology. In this thesis work, a study of P3HT:PCBM heterojunction solar cells was presented. By incorporation of photo-active film slow growth, PEDOT:PSS (Poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate)) de-water treatment and application of highly conductive PEDOT:PSS (HC-PEDOT), a maximum PCE (power conversion efficiency) of 4% was achieved.

Inkjet printing technique was on the other hand introduced into fabrication process. The morphological, electrical and optical properties of printed HC-PEDOT were investigated. Fine silver girds with well-designed pattern, combining with a transparent thin film of HC-PEDOT, was inkjet-printed to form the anode of solar cells. A functional device with printed anode and printed photo-active layer was demonstrated, showing the possibility of realizing fully printed organic solar cells.

 

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Reis, Gisele Alves dos. "Análise das propriedades óticas do poli( 3-metiltiofeno) (P3MT) sintetizado eletroquimicamente." Universidade Estadual de Londrina. Centro de Ciências Exatas. Programa de Pós-Graduação em Física, 2009. http://www.bibliotecadigital.uel.br/document/?code=vtls000151292.

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Os semicondutores orgânicos possuem características físicas bastante parecidas com as dos semicondutores inorgânicos, podendo ser utilizados na fabricação de LEDs, células fotovoltaicas e lasers. Os polímeros semicondutores apresentam as seguintes vantagens sobre os semicondutores inorgânicos: (a) maior flexibilidade e maleabilidade; (b) a possibilidade e facilidade de realizar pequenas mudanças estruturais no monômero do polímero de forma a alterar as propriedades físicas e químicas; (c) a simplicidade das técnicas de fabricação e (d) o baixo custo de produção. Dentre os poli(3-alquiltiofenos) (P3AT), o poli(3-metiltiofeno) (P3MT) tem potencialidade como dispositivo emissor de luz. Politiofenos e derivados tem uma boa estabilidade química em condições ambientais, produzindo assim interfaces estáveis com eletrodos metálicos comumente utilizados em eletrônica. O P3MT foi sintetizado eletroquimicamente através da oxidação do monômero, 3-metiltiofeno, utilizando uma cela com três eletrodos e uma solução constituída do monômero e do eletrólito LiClO4 ou Et4NBF4 em acetonitrila. Os filmes poliméricos foram depositados sobre os substratos condutores transparentes de óxido de estanho dopado com flúor (FTO). Como eletrodo auxiliar foi utilizado uma placa de platina e como eletrodo de referência foi utilizado Ag/AgCl. Os filmes foram analisados por espectroscopia no infravermelho (FTIR), ressonância paramagnética eletrônica (EPR), espectroscopia de absorção por refletância no ultravioleta-vísivel (UV-VIS) e espectroscopia de fotoluminescência (PL). Os espectros de FTIR apresentaram as freqüências características do P3MT e, juntamente com os resultados de EPR, possibilitaram caracterizar os portadores de carga e identificar estruturas benzênicas e quinônicas na formação das cadeias do P3MT devido à dopagem do material. Os espectros de absorção UVVis possibilitaram a obtenção do “gap” de energia médio do P3MT e apresentaram a banda de transição _-_* e uma banda de bipólaron. Nos espectros de PL, com variação da potência de excitação e da temperatura, foram realizados estudos através de ajustes com gaussianas, considerando a forte probabilidade da existência de duas contribuições distintas de emissão na formação dos espectros. Estas duas contribuições foram atribuídas à emissão das cadeias mistas (gaussiana centrada em maior energia) e a emissão das cadeias benzênicas (gaussiana de menor energia) presentes no material polimérico formado.
Organic semiconductors have physical characteristics very similar to those of inorganic semiconductors, which can be used in the manufacture of LEDs, photovoltaic cells and lasers. Semiconductor polymers have the following advantages over inorganic semiconductors: (a) greater flexibility and malleability, (b) the possibility and easiness of perform small structural changes in the monomer of the polymer in order to change the physical and chemical properties, (c) the simplicity of the techniques of manufacture and (d) the low cost of production. Among the poly(3-alquiltiofenos) (P3AT), the poly(3-methylthiophene) (P3MT) has potential as a light emitter device. Polythiophene and derivatives has good chemical stability in environmental conditions, thereby producing stable interfaces with metal electrodes commonly used in electronics. The P3MT was synthesized electrochemically through the oxidation of monomer, 3-methylthiophene, using a three electrodes cell and a solution with monomer and electrolyte LiClO4 or Et4NBF4 in acetonitrile. The polymeric films were deposited on transparent conductive substrates of fluorine tin oxide (FTO). A platinum sheet was used as auxiliary electrode and Ag/AgCl was used as reference electrode. The films have been analyzed by infrared spectroscopy (FTIR), electron paramagnetic resonance spectroscopy (EPR), UV-VIS absorption spectroscopy and the photoluminescence (PL). The FTIR spectra show the characteristic features of P3MT and, together with the results of EPR, allowed the characterization of the charge carriers and identify benzene and quinones in the formation of chains of P3MT due to doping of the material. The UV-Vis absorption spectra allowed to obtain the average gap energy of P3MT and presented the _-_* transition band and a bipolaron band. In the PL spectra, with variation of excitation power and temperature, studies were performed through the fit with Gaussian functions, given the strong probability of the existence of two distinct contributions in the formation of emission spectra. These two contributions were assigned to the emission of mixed chains (Gaussian centered at higher energy) and emission of benzenoid chains (Gaussian of lower energy) in the formed polymeric material.
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Books on the topic "P3OT"

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Kilpatrick, David. Pentax K1000, P30N/P3N and P30T. Hove, Sussex: Hove Foto Books, 1990.

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Kilpatrick, David. Pentax K1000 P30n/P3n and P30T. Surrey: Hove Fountain, 1990.

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Kilpatrick, David. Pentax K1000, P30N/P3N and P30T. Hove, Sussex: Hove Foto Books, 1990.

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May, Asmal. Pengembangan pemikiran pendidikan tasawuf (P3T). Pekanbaru: Program Pascasarjana, UIN Suska Riau, 2009.

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Ludwigs, Sabine, ed. P3HT Revisited – From Molecular Scale to Solar Cell Devices. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-45145-8.

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Miskat, Alam PT. Pembangunan prasarana pendukung desa tertinggal P3DT-OECF phase III pola kombinasi tahun anggaran: Laporan akhir. Jakarta: Miskat Alam Konsultan in associated with PT. Citra Diecona, 2001.

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Proyek Penanggulangan Pengangguran Pekerja Trampil (Indonesia). Laporan paripurna Proyek Penanggulangan Pengangguran Pekerja Trampil (P3T) tahun anggaran 1998/1999. [Jakarta]: Kerjasama Kanwil Departemen Tenaga Kerja DKI Jakarta dengan Lembaga Pengabdian Kepada Masyarakat, Universitas Terbuka, 1998.

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Kabupaten), Kendari (Indonesia :. Program pembangunan prasarana kota terpadu (P3KT) kota Kendari: Program jangka menengah (PJM) 1996/1997-2000/2001. Kendari]: Pemerintah Kabupaten Dati II Kendari, Prop. Sulawesi Tenggara, 1994.

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(Firm), Geo Sarana Guna. P3DT pola swakelola LKMD Propinsi Jawa Tengah: Pati, Jepara, Semarang, Temanggung, Rembang, Blora, dan Grobogan : laporan akhir. Semarang: Geo Sarana Guna, 2000.

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Saranabudi, Prakarsaripta PT. P3DT-III pola swakelola LKMD tahun anggaran 2000 wilayah Klaten, Wonogiri, Kebumen, Purworejo, Magelang, Gunungkidul: Laporan akhir. Klaten: Saranabudi Prakarsaripta, 2001.

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Book chapters on the topic "P3OT"

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Villars, P., K. Cenzual, J. Daams, R. Gladyshevskii, O. Shcherban, V. Dubenskyy, V. Kuprysyuk, and I. Savysyuk. "Cd3(P3O9)2∙14H2O." In Structure Types. Part 9: Space Groups (148) R-3 - (141) I41/amd, 248. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-02702-4_157.

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Villars, P., K. Cenzual, J. Daams, R. Gladyshevskii, O. Shcherban, V. Dubenskyy, V. Kuprysyuk, and I. Savysyuk. "Cd3(P3O9)2∙14H2O." In Structure Types. Part 9: Space Groups (148) R-3 - (141) I41/amd, 256. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-02702-4_165.

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Villars, P., K. Cenzual, J. Daams, R. Gladyshevskii, O. Shcherban, V. Dubenskyy, V. Kuprysyuk, and I. Savysyuk. "Cd3(P3O9)2∙6H2O." In Structure Types. Part 9: Space Groups (148) R-3 - (141) I41/amd, 63. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-02702-4_26.

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Musumeci, A. W., G. G. Silva, J. W. Liu, L. Rintoul, E. R. Waclawik, and G. A. George. "MWNT Polymer Nanocomposites Based on P3HT." In Advanced Materials and Processing IV, 291–94. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-466-9.291.

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Zaumseil, Jana. "P3HT and Other Polythiophene Field-Effect Transistors." In P3HT Revisited – From Molecular Scale to Solar Cell Devices, 107–37. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/12_2014_279.

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Dridi, Chahrazed, and Naima Touafek. "Numerical Study of P3HT: Graphene Organic Solar Cell." In ICREEC 2019, 367–73. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5444-5_46.

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Poelking, Carl, Kostas Daoulas, Alessandro Troisi, and Denis Andrienko. "Morphology and Charge Transport in P3HT: A Theorist’s Perspective." In P3HT Revisited – From Molecular Scale to Solar Cell Devices, 139–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/12_2014_277.

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Moulé, Adam J., Dieter Neher, and Sarah T. Turner. "P3HT-Based Solar Cells: Structural Properties and Photovoltaic Performance." In P3HT Revisited – From Molecular Scale to Solar Cell Devices, 181–232. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/12_2014_289.

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Chevrier, Michèle, Riccardo Di Ciuccio, Olivier Coulembier, Philippe Dubois, Sébastien Richeter, Ahmad Mehdi, and Sébastien Clément. "Functionalization of P3HT-Based Hybrid Materials for Photovoltaic Applications." In Novel Nanoscale Hybrid Materials, 107–77. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119156253.ch4.

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Sista, Prakash, and Christine K. Luscombe. "Progress in the Synthesis of Poly (3-hexylthiophene)." In P3HT Revisited – From Molecular Scale to Solar Cell Devices, 1–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/12_2014_278.

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Conference papers on the topic "P3OT"

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Gopal, A., M. Drees, R. M. Davis, and J. R. Heflin. "Modelling of external quantum efficiency spectra as a function of varying P3OT thickness in P3OT-C 60 polymer photovoltaic devices." In Optics & Photonics 2005, edited by Zakya H. Kafafi and Paul A. Lane. SPIE, 2005. http://dx.doi.org/10.1117/12.615987.

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Silva, Glaura, Hallen Calado, Anthony Musumeci, Wayde Martens, Eric Waclawik, Ray Frost, and Graeme George. "Polymer nanocomposites based on P3OT, TPU and SWNT: preparation and characterization." In 2006 International Conference on Nanoscience and Nanotechnology. IEEE, 2006. http://dx.doi.org/10.1109/iconn.2006.340581.

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Niziol, J., E. Gondek, A. Danel, and J. Sanetra. "Influence of dispersed core-shell nano-sized particles on P3OT based photovoltaic device." In 2009 3rd ICTON Mediterranean Winter Conference (ICTON-MW 2009). IEEE, 2009. http://dx.doi.org/10.1109/ictonmw.2009.5385595.

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Tiwari, Shashi, Sudha Tiwari, Rajiv Prakash, and S. K. Balasubramanian. "Study of electrical properties of poly-3-alkylthiophen (P3AT) derivatives P3HT, P3BT and P3DDT based field effect transistors." In 2013 Annual IEEE India Conference (INDICON). IEEE, 2013. http://dx.doi.org/10.1109/indcon.2013.6726094.

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Zarazúa, I., E. De la Rosa, T. López-Luke, J. Reyes, and S. Ruiz. "Photovoltaic conversion enhancement of TiO 2 nanoparticles decorated with Au nanocrystals and sensitized with CdSe quantum dots and P3OT polymer." In SPIE Solar Energy + Technology, edited by Loucas Tsakalakos. SPIE, 2010. http://dx.doi.org/10.1117/12.861056.

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Ryu, Donghyeon. "Carbon Nanotube Doping Effect on Structure and Optical Properties of Poly(3-Hexylthiophene) Tensile Strain Sensing Thin Films." In ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/smasis2016-9099.

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The poly(3-hexylthiophene) (P3HT)-based thin films were shown to perform multifunctional capability as a self-powered tensile strain sensor for structural health monitoring and an energy harvester. It was shown that carbon nanotubes (CNTs) could help alignment of molecules through non-covalent functionalization of CNTs via helical wrapping. P3HT molecules are expected to be better ordered thanks to the doped CNTs. In this study, doping effect of the CNT will be investigated on crystalline structures and optical properties of P3HT tensile sensing thin films. First, P3HT tensile strain sensing thin films with various doping concentrations of CNTs will be fabricated using the spin-coating technique. Second, the fabricated P3HT-based sensing thin films will be characterized using x-ray diffractometer and ultraviolet-visible spectrophotometer to understand the changes of P3HT molecules’ crystalline structures and optical properties at various strain levels, respectively.
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Liu, Chin-Yi, and Uwe R. Kortshagen. "Hybrid Solar Cells From Silicon Nanocrystals and Conductive Polymers." In ASME 2009 3rd International Conference on Energy Sustainability collocated with the Heat Transfer and InterPACK09 Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/es2009-90322.

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Hybrid solar cells based on blends of a conjugated polymer, poly-3(hexylthiophene) (P3HT), and silicon nanocrystals (Si NCs) have been developed and characterized. The properties of composite Si NCs/P3HT films which were spun from 1, 2-dichlorobenzene were studied. Under A.M. 1.5 direct illumination conditions (100mW/cm2), devices made with 50wt% 3–5nm Si NCs showed 1.33% power conversion efficiency (PCE) and had a 30% incident-photon-to-current conversion efficiency at 470 nm.
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Kymakis, Emmanuel, and Emmanuel Koudoumas. "P3HT/PCBM/SWNTs photovoltaic devices." In Photonics Europe, edited by Paul L. Heremans, Michele Muccini, and Eric A. Meulenkamp. SPIE, 2008. http://dx.doi.org/10.1117/12.782785.

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Pulliam, Elias, George Hoover, and Donghyeon Ryu. "Multifunctional Mechano-Luminescent-Optoelectronic Composites for Self-Powered Strain Sensing." In ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/smasis2017-3977.

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Aerospace mechanical structures encounter various forms of damage throughout their operation due to mechanical stimuli. Structural health monitoring (SHM) is suggested as a way to actively check the integrity of a component by using a system of sensors. However, these conventional sensors can often require external power that is not always readily available in aerospace, thus the development of self-powered sensors could prove beneficial for SHM applications. In this study, the design of multifunctional mechano-luminescent-optoelectronic (MLO) composites strain sensor is suggested. The MLO composites sensor is composed of two transformative materials: 1) mechano-luminescent (ML) copper-doped zinc sulfide (ZnS:Cu) and 2) mechano-optoelectronic (MO) poly(3-hexylthiophene) (P3HT). ML ZnS:Cu emits light in response to mechanical stimuli. MO P3HT showed self-sensing capability by generating direct current (DC) sensor signal under light. First, ZnS:Cu ML crystals will be embedded in polydimethylsiloxane (PDMS) matrix to fabricate ZnS:Cu/PDMS elastomeric composites. ML light emission characteristics of ZnS:Cu/PDMS will be studied by subjecting the ZnS:Cu/PDMS to cyclic tensile strain loadings while videos are recorded of the light emission. The data are analyzed using a statistical factorial methodology so that a regression model to predict light emission based on loading strain and frequency can be calculated. Second, MO P3HT-based self-sensing thin films will be fabricated on glass slides using a spin-coating technique. Last, self-powered sensing capability of the MLO composites strain sensor will be validated by measuring DC voltage (DCV) in close proximity of the ZnS:Cu/PDMS subjected to cyclic tensile loadings.
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Miyazawa, R., D. Taguchi, T. Manaka, and M. Iwamoto. "Probing electric field distribution of P3HT in ITO/PI/P3HT/Au by using EFISHG measurement." In 2011 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2011. http://dx.doi.org/10.7567/ssdm.2011.bl-1-3.

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Reports on the topic "P3OT"

1

Trejo, Leonard J., Mark Inlow, Robert R. Stanny, William A. Morey, and Scott Makeig. The P3OO Component of the Auditory Event-related Potential: Interlaboratory Consistency and Test-retest Reliability. Fort Belvoir, VA: Defense Technical Information Center, March 1991. http://dx.doi.org/10.21236/ada374904.

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