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Статті в журналах з теми "NANOCOMPOSITE AND PEDOT: PSS"

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SONG, DANDAN, MEICHENG LI, FAN BAI, YINGFENG LI, YONGJIAN JIANG, and BING JIANG. "SILICON NANOPARTICLES/PEDOT–PSS NANOCOMPOSITE AS AN EFFICIENT COUNTER ELECTRODE FOR DYE-SENSITIZED SOLAR CELLS." Functional Materials Letters 06, no. 04 (August 2013): 1350048. http://dx.doi.org/10.1142/s1793604713500483.

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A novel inorganic/organic nanocomposite film composed of Si nanoparticles (NPs) and poly-(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT–PSS) is obtained from a simple mechanical mixture of Si NPs powder and aqueous PEDOT–PSS solution. Employing this composite film as a counter electrode, dye-sensitized solar cell (DSSC) exhibits an efficiency of 5.7% and a fill factor of 0.51, which are much higher than these of DSSC using pristine PEDOT–PSS electrode (2.9% and 0.25, respectively). The improvements in the photovoltaic performance of the former are primarily derived from improved electrocatalytic performance of the electrode, as evidenced by electrochemical measurements, the composite electrode has lower impedance and higher electrocatalytic activity when in comparison with pristine PEDOT–PSS electrode. These improvements are primarily deriving from the increased electrochemical surface by the addition of Si NPs. The characteristics of Si NPs/PEDOT–PSS composite counter electrode reveal its potential for the use of low-cost and stable Pt-free counter electrode materials. In addition, the results achieved in this work also provide a facile and efficient approach to improve the photovoltaic performance of DSSCs using PEDOT–PSS electrodes.
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Dehsari, Hamed Sharifi, Jaber Nasrollah Gavgani, Amirhossein Hasani, Mojtaba Mahyari, Elham Khodabakhshi Shalamzari, Alireza Salehi, and Farmarz Afshar Taromi. "Copper(ii) phthalocyanine supported on a three-dimensional nitrogen-doped graphene/PEDOT-PSS nanocomposite as a highly selective and sensitive sensor for ammonia detection at room temperature." RSC Advances 5, no. 97 (2015): 79729–37. http://dx.doi.org/10.1039/c5ra13976g.

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Ummartyotin, S., J. Juntaro, C. Wu, M. Sain, and H. Manuspiya. "Deposition of PEDOT: PSS Nanoparticles as a Conductive Microlayer Anode in OLEDs Device by Desktop Inkjet Printer." Journal of Nanomaterials 2011 (2011): 1–7. http://dx.doi.org/10.1155/2011/606714.

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A simple microfabrication technique for delivering macromolecules and patterning microelectrode arrays using desktop inkjet printer was described. Aqueous solution of nanoparticle of poly (3,4-ethylenedioxythiophene) (PEDOT) doped with polystyrene sulfonic acid (PSS) was prepared while its particle size, the surface tension, and the viscosity of the solution were adjusted to be suitable for deposition on a flexible cellulose nanocomposite substrate via inkjet printer. The statistical average of PEDOT: PSS particle size of 100 nm was observed. The microthickness, surface morphology, and electrical conductivity of the printed substrate were then characterized by profilometer, atomic force microscope (AFM), and four-point probe electrical measurement, respectively. The inkjet deposition of PEDOT: PSS was successfully carried out, whilst retained its transparency feature. Highly smooth surface (roughness ~23–44 nm) was achieved.
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Pisesweerayos, Prasit, Somsak Dangtip, Pitt Supaphol, and Toemsak Srikhirin. "Conductive Nanocomposite Aligned Fibers of PVA-AgNPs-PEDOT/PSS." Advanced Materials Research 1033-1034 (October 2014): 1009–19. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.1009.

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Poly (vinyl alcohol)-silver nanoparticles (PVA:AgNPs), and poly (vinyl alcohol)-silver nanoparticles-poly (3, 4-ethylene dioxythiophene)/poly (styrene sulfonate) (PVA:AgNPs: PEDOT/ PSS) were generated as ultra-fine electrospun fibers using the aligned fiber mat and aligned single fiber techniques. SEM and TEM were used to confirm the morphology, diameter size, and fiber alignment of the ultra-fine fibers. A two-probe technique was utilized to assess the electrical conductivity of the ultrafine fibers. The highest conductivity of PVA:AgNPs, (10 %w/v:0.75 %w/v) with a fiber diameter of 0.152 μm, with voltage applied at 17.5 kV within a 20 min collection period in the electrospinning process, was 43.20 S/cm; whereas the highest conductivity of PVA:AgNPs: PEDOT/PSS, (10 %w/v:0.25 %w/v:0.084 %w/v), with a fiber diameter of 0.158 μm and voltage applied at 17.5 kV within a 45 min collection period in the electrospinning process, was 92.18 S/cm.
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Khasim, Syed, Apsar Pasha, Nacer Badi, Mohana Lakshmi, and Yogendra Kumar Mishra. "High performance flexible supercapacitors based on secondary doped PEDOT–PSS–graphene nanocomposite films for large area solid state devices." RSC Advances 10, no. 18 (2020): 10526–39. http://dx.doi.org/10.1039/d0ra01116a.

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In this work, we propose the development of high performance and flexible supercapacitors using reduced graphene oxide (rGO) incorporated poly(3,4 ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT–PSS) nanocomposites by secondary doping.
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Khasim, Syed, Apsar Pasha, Nacer Badi, Adnen Ltaief, S. A. Al-Ghamdi, and Chellasamy Panneerselvam. "Expression of concern: Design and development of highly sensitive PEDOT-PSS/AuNP hybrid nanocomposite-based sensor towards room temperature detection of greenhouse methane gas at ppb level." RSC Advances 13, no. 13 (2023): 8719. http://dx.doi.org/10.1039/d3ra90018e.

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Анотація:
Expression of concern for ‘Design and development of highly sensitive PEDOT-PSS/AuNP hybrid nanocomposite-based sensor towards room temperature detection of greenhouse methane gas at ppb level’ by Syed Khasim et al., RSC Adv., 2021, 11, 15017–15029. DOI https://doi.org/10.1039/D1RA00994J.
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Park, Eun-Soo. "Preparation and morphology of electroconductive PEDOT/PSS/ATO nanocomposite microsphere." Polymer Composites 36, no. 7 (April 19, 2014): 1352–64. http://dx.doi.org/10.1002/pc.23040.

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Hegde, Roopa, Koona Ramji, Swapna Peravali, Yallappa Shiralgi, Gurumurthy Hegde, and Lavakumar Bathini. "Characterization of MWCNT-PEDOT: PSS Nanocomposite Flexible Thin Film for Piezoresistive Strain Sensing Application." Advances in Polymer Technology 2019 (June 10, 2019): 1–9. http://dx.doi.org/10.1155/2019/9320976.

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Multiwalled carbon nanotubes (MWCNTs) were synthesized by the reduction of ethyl alcohol with sodium borohydride (NaBH4) under a strong basic solvent with the high concentration of sodium hydroxide (NaOH). Nanocomposites of different concentration of MWCNT dispersed in poly(3,4-ethylene dioxythiophene) polymerized with poly(4-styrene sulfonate) (PEDOT:PSS) were prepared and deposited on a flexible polyethylene terephthalate (PET) polymer substrates by the spin coating method. The thin films were characterized for their nanostructure and subsequently evaluated for their piezoresistive response. The films were subjected to an incremental strain from 0 to 6% at speed of 0.2 mm/min. The nanocomposite thin film with 0.1 wt% of MWCNT exhibits the highest gauge factor of 22.8 at 6% strain as well as the highest conductivity of 13.5 S/m. Hence, the fabricated thin film was found to be suitable for piezoresistive flexible strain sensing applications.
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E. Amr, Abd, Mohamed Al-Omar, Ayman H. Kamel, and Elsayed A. Elsayed. "Single-Piece Solid Contact Cu2+-Selective Electrodes Based on a Synthesized Macrocyclic Calix[4]arene Derivative as a Neutral Carrier Ionophore." Molecules 24, no. 5 (March 6, 2019): 920. http://dx.doi.org/10.3390/molecules24050920.

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Herein, a facile route leading to good single-walled carbon nanotubes (SWCNT) dispersion or poly (3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) based single-piece nanocomposite membrane is proposed for trace determination of Cu2+ ions. The single-piece solid contact Cu2+-selective electrodes were prepared after drop casting the membrane mixture on the glassy-carbon substrates. The prepared potentiometric sensors revealed a Nernstian response slope of 27.8 ± 0.3 and 28.1 ± 0.4 mV/decade over the linearity range 1.0 × 10−3 to 2.0 × 10−9 and 1.0 × 10−3 to 1.0 × 10−9 M with detection limits of 5.4 × 10−10 and 5.0 × 10−10 M for sensors based on SWCNTs and PEDOT/PSS, respectively. Excellent long-term potential stability and high hydrophobicity of the nanocomposite membrane are recorded for the prepared sensors due to the inherent high capacitance of SWCNT used as a solid contact material. The sensors exhibited high selectivity for Cu2+ ions at pH 4.5 over other common ions. The sensors were applied for Cu2+ assessment in tap water and different tea samples. The proposed sensors were robust, reliable and considered as appealing sensors for copper (II) detection in different complex matrices.
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Gavgani, Jaber Nasrollah, Hamed Sharifi Dehsari, Amirhossein Hasani, Mojtaba Mahyari, Elham Khodabakhshi Shalamzari, Alireza Salehi, and Farmarz Afshar Taromi. "A room temperature volatile organic compound sensor with enhanced performance, fast response and recovery based on N-doped graphene quantum dots and poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate) nanocomposite." RSC Advances 5, no. 71 (2015): 57559–67. http://dx.doi.org/10.1039/c5ra08158k.

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Дисертації з теми "NANOCOMPOSITE AND PEDOT: PSS"

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Shen-Ming, Chen. "Applications of nanostructured materials and biomolecules for electrocatalysis and biosensors." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20454.

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Electronically conducting polymers are important materials, and composites of these materials with metal nanoparticles have also been drawn significant research attention in recent years. We prepared a highly stable Agnano-Poly (3, 4-ethylenedioxythiophene) (PEDOT) nanocomposite by one-pot synthesis method. Here, 3, 4-ethylenedioxythiophene (EDOT) is used as the reductant and polystyrene sulfonate (PSS-) as a dopant for PEDOT as well as particle stabilizer for silver nanoparticles (AgNPs). Agnano–PEDOT/PSS-nanocomposite was characterized by infrared (IR) spectroscopy, transmission electron microscopy (TEM). AgNPs are distributed uniformly around PEDOT polymer with an average particle size diameter of 10–15 nm and the nanocomposite film showed catalytic activity towards 4-nitro phenol. Some types of including Ag bimetallic nanoparticles and nanostructured materials could be directly applied for the electroanalysis and biosensing applications. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/20454
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CHAKMA, SHIMUL. "FABRICATION AND CHARACTERIZATION OF CEO2/RGO CONDUCTING ELECTRODES." Thesis, DELHI TECHNOLOGICAL UNIVERSITY, 2021. http://dspace.dtu.ac.in:8080/jspui/handle/repository/18425.

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Fabrication of advanced electrode material is highly desired for novel electrochemical sensor development. In this work, cerium oxide (CeO2) nanoparticles were successfully loaded on reduced graphene oxide (RGO) by one-step hydrothermal synthesis approach, and this nanocomposite (CeO2/ rGO) was used as novel electrode material for urea detection. Herein, efforts have been made to fabricate a conducting paper based sensor comprising of CeO2/rGO nanocomposite and PEDOT: PSS. The conductivity of the PEDOT: PSS coated paper significantly increases from 6.9 x 10-5 S/cm to 1.1 x 10-4 S/cm on treatment with ethylene glycol. Further, the modification of conducting paper with synthesized CeO2/rGO nanocomposite shows better electrochemical properties.
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Yao, Xiao. "Grayscale patterning of PEDOT: PSS films by multi-photon lithography." Thesis, Kansas State University, 2008. http://hdl.handle.net/2097/780.

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Master of Science
Department of Chemistry
Daniel A. Higgins
Lithography techniques have been widely used to fabricate optical, electronic and optoelectronic devices with sub-micron scale spatial resolution. In the most common lithographic procedures, a light sensitive polymer, called a photoresist, is exposed and developed to form a binary relief pattern on a substrate. The finest features are produced by X-ray or electron-beam methods, both of which are very expensive to employ. Less expensive methods use ultraviolet (UV) light to expose the photoresist through a photomask. The resolution in these methods is somewhat lower and is governed by diffraction of light by the photomask, the quality of the photomask, and by any chemical/physical development steps subsequently employed. Due to the above limitations, we have been investigating direct-write, ablative multiphoton lithography as an alternative method for preparing high-resolution patterns. With this method, near-IR light from an ultrafast pulsed laser source is focused into a polymer film, leading to depolymerization and vaporization of the polymer. Arbitrary binary patterns can be produced by raster scanning the sample while controlling exposure of the film to the laser. Importantly, high-resolution etching of the polymer film is achieved without the use of a photomask and without chemical development steps. While arbitrary patters are easily prepared, it is also possible to prepare three-dimensional (i.e. grayscale) surface relief structures. In this study, ablative multiphoton photolithography is used to prepare binary and grayscale structures in thin films of PEDOT:PSS, an electrically conductive organic polymer blend. A simple kinetic model is proposed to explain the etching process. Data on the power-dependence of polymer etching can be fit to this model and is used to determine the order of the nonlinear optical process involved. The etch depth as a function of laser focus is also investigated and shown to follow the same kinetic model. The results show that three-dimensional (grayscale) patterns can be prepared by modulating either the laser power or the laser focus. Images of several binary and grayscale structures prepared by this method are presented.
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Vichessi, Raquel Braz. "Propriedades interfaciais de eletrodos modificados pedot : PSS/AU NPs aplicados na eletrocatálise de nitrofenóis." reponame:Repositório Institucional da UFPR, 2015. http://hdl.handle.net/1884/46323.

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Orientador : Prof. Dr. Marcio Vidotti
Tese (doutorado) - Universidade Federal do Paraná, Setor de Ciências Exatas, Programa de Pós-Graduação em Química. Defesa: Curitiba, 22/04/2015
Inclui referências : f. 92-103
Área de concentração
Resumo: A modificação de eletrodos de ITO foi realizada a partir da eletropolimerização do PEDOT:PSS utilizando dois distintos regimes eletroquímicos: potenciostático e potenciodinâmico. Em seguida, a partir de um método simples de imersão em sal de ouro e aplicação de potencial, foram obtidas nanopartículas de ouro na superfície polimérica. A caracterização da morfologia nodular polimérica foi realizada pelas técnicas de microscopia eletrônica de varredura (MEV) e microscopia de força atômica (AFM), sendo observadas diferentes homogeneidades nas superfícies poliméricas e também a presença de poros nos eletrodos modificados por meio do crescimento potenciodinâmico. Os resultados de espectroscopia RAMAN e e espectroscopia de impedância eletroquímica (EIS) confirmam a presença de nanopartículas e permitiram a correlação das propriedades superficiais dos eletrodos com os valores de transferência eletrônica. Estudos de redução eletroquímica de três isômeros de nitrofenóis (orto-, meta- e para-nitrofenol) mostram o efeito eletrocatalítico dos eletrodos modificados. Os resultados obtidos apresentam a relação das propriedades interfaciais eletrodo-nitrofenol, sendo caracterizados por medidas de ângulo de contato e espectroscopia RAMAN. Palavras-chave: eletrodos modificados, PEDOT:PSS/Au NPs, eletrocatálise, nitrofenóis, propriedades interfaciais.
Abstract: The modification of ITO electrodes was performed by electropolymerization of PEDOT:PSS through two distinct electrochemical regimes: potentiostatic and potenciodynamic. After modification using, a simple method of gold salt immersion and potential application, gold nanoparticles were obtained on the polymeric surface. The characterization of nodular morphology was made using scanning electronic microscopy (SEM) and atomic force microscopy (AFM). Different surface homogeneity and porous presence were observed due to potenciodynamic growth. The results from RAMAN spectroscopy and electrochemical impedance spectroscopy (EIS) confirm the presence of the nanoparticles and allow the correlation between surface properties and electronic transfer values of the electrodes. Electrochemical reduction studies of three nitrophenol isomers (orto-, meta- and para-) show the electrocatalytic effect of the modified electrodes. The obtained results demonstrate the relation of electrode-nitrophenol interface properties, being characterized by angle contact measurements and RAMAN spectroscopy. Keywords: modified electrodes, PEDOT:PSS/Au NPs, electrocatalysis, nitrophenol, interface properties.
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Garnier, Jérôme. "Polymer electrochromism and surface plasmons combined on metallic diffraction gratings." Thesis, Linköping University, Department of Science and Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11522.

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All conducting polymers are potentially electrochromic, owing to the injection of charge carriers that changes their electronic structure and results in a shift of their optical absorption towards higher wavelengths. PEDOT-PSS and PEDOT-S are very promising materials in terms of electrochromic properties, due to the good contrast existing between their doped and undoped forms. However this contrast has to be enhanced in order to design more efficient electrochromic devices, and new solutions should thus be found in order to solve this issue.

Surface plasmons are described as electromagnetic waves propagating along the surface between a dielectric and a metal. Coupled to an incident radiation, they create an energy loss in the light transmitted and reflected by the interface. When the metallic surface is periodically corrugated, this absorption phenomenon due to plasmonic resonance occurs at a specific wavelength that depends on several parameters, such as the incidence angle, the dielectric constants of the two media and the grating period. By coating metallic gratings with electrochromic polymers, we may thus be able to trigger a plasmonic absorption at a given wavelength and shift it upon reduction or oxidation of the material.

Electrochromic devices consisting of PEDOT-PSS or PEDOT-S spin-deposited on gold and silver gratings were investigated by UV-visible reflectance measurements. The periodically corrugated structures were reproduced from commercial gratings by soft nanolithography and were analyzed by AFM. Some electrochromic cells exhibited new colors or a high shift of the plasmonic resonance upon redox switching of the polymer film. Depending on the step and the nature of the grating employed, this shift could reach 20 nm in the case of PEDOT-PSS and more than 100 nm for PEDOT-S. A theoretical model was found to predict the wavelength of plasmonic excitation and the orientation of the shift.

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Oziat, Julie. "Electrode 3D de PEDOT : PSS pour la détection de métabolites électrochimiquement actifs de Pseudomonas aeruginosa." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEM026/document.

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Lors d’infections, l'identification rapide des micro-organismes est cruciale pour améliorer la prise en charge du patient et mieux contrôler l'usage des antibiotiques. L’électrochimie présente plusieurs avantages pour les tests rapides : elle permet des analyses in situ, faciles et peu chères dans la plupart des liquides. Son utilisation pour l’identification bactérienne est récente et provient de la découverte de molécules donnant de forts signaux redox dans le surnageant de bactéries du genre Pseudomonas.Cette thèse s’intéresse à l’analyse de surnageants de la bactérie Pseudomonas aeruginosa, 4e cause de maladies nosocomiales en Europe. Tout d’abord, l’intérêt de l’analyse électrochimique de surnageants de culture dans une visée d’identification a été évalué. Pour cela, après l’étude de 4 potentiels biomarqueurs de la présence de cette bactérie en solutions modèles, l’analyse électrochimiques de surnageant de plusieurs souches P. aeruginosa a été effectuée. Les résultats obtenus sont prometteurs. Ils mettent en évidence une signature électrochimique complexe et souche-dépendante du surnageant.La suite de la thèse s’est intéressée à l’amplification de la détection électrochimique grâce à l’utilisation du polymère conducteur PEDOT:PSS. Il a été choisi pour ses bonnes propriétés électrochimiques, sa biocompatibilité et sa facilité de mise en forme. Il a tout d’abord été utilisé sous forme de films minces pour confirmer son pouvoir d’amplification. Une électrode 3D a ensuite été fabriquée par lyophilisation. L’utilisation de ce type d’électrode permet d’amplifier encore la détection en augmentant la surface d’échange mais aussi en confinant les bactéries dans l'électrode
During infections, microorganisms fast identification is critical to improve patient treatment and to better manage antibiotics use. Electrochemistry exhibits several advantages for rapid diagnostic: it enables easy, cheap and in situ analysis in most liquids. Its use for bacterial identification is recent and comes from the discovery of molecules giving strong redox signals in the bacterial supernatant of the Pseudomonas genus.This thesis focuses on the supernatants analysis of the bacterium Pseudomonas aeruginosa. This bacteria is the fourth cause of nosocomial infections in Europe. First, the interest of supernatants electrochemical analysis for identification was evaluated. For this, after the study of four redox biomarkers of this bacterium in model solutions, supernatant electrochemical analysis of several strains of P. aeruginosa was performed. The results are promising. They highlight a complex strain-dependant electrochemical signature of the supernatant.Following, we focused in the amplification of the electrochemical detection through the use of the conductive polymer PEDOT: PSS. This polymer was chosen for its good electrochemical properties, its biocompatibility and its easy shaping. It was first used as a thin films to confirm its amplification power through biomarker adsorption. Then, a 3D electrode was made by freeze drying. The use of this type of electrode can further amplify the detection by increasing the exchange surface as well as confining the bacteria in the electrode
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Almeida, Tiago Pedroso de. "Estudo da aplicação de filmes automontados de PAH/PEDOT: PSS em membranas de Nafion®." Universidade Federal de São Carlos, 2013. https://repositorio.ufscar.br/handle/ufscar/8351.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
The present work aimed the fabrication of layer-by-layer nanostructured films of poly (allylaminehydrochloride) (PAH) and poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) onto Nafion® 212 membranes. Nafion® is the most used polyelectrolyte in proton exchange membranes (PEM) fuel cells due to its high proton conduction and good chemical stability at ambient temperature. Therefore, this polyelectrolyte presents some disadvantages due to the high methanol permeability when applied in Direct Methanol Fuel Cells (DMFC), reducing drastically the performance of the device. We studied how ultrathin films of PAH/PEDOT:PSS influence the methanol permeability and proton conduction in the LbL modified membranes. Results indicated good adherence of the LbL films onto Nafion® 212 and also good action as a methanol barrier. Nonetheless, together with the methanol blocking there was also a reduction in the proton conductivity, which occurs due to the LbL dipping deposition on both sides of Nafion® 212, trapping water inside the Nafion membrane, and certainly affecting the proton conduction. Moreover, the LbL film deposition might use some important chemical groups present at the Nafion® surface, used to water permeation, also affecting the proton permeation throughout the membrane.
O presente trabalho visou a fabricação de filmes automontados nanoestruturados (LbL, do inglês layer-by-layer) de poli(alilaminahidroclorada) (PAH) e poli(3,4-etilenodioxitiofeno)poli(estirenossulfado)(PEDOT:PSS) sobre membranas de Nafion® 212. O Nafion® é o polieletrólito mais usado em células combustíveis do tipo PEM (do inglês Proton Exchange Membrane) devido a sua alta capacidade de condução protônica e boa estabilidade química em temperatura ambiente. Entretanto, este polieletrólito apresenta a desvantagem da alta permeação de metanol quando aplicado em células combustíveis a base de metanol direto (DMFC, do inglês Direct Methanol Fuel Cell), que reduz drasticamente o desempenho do dispositivo. Estudamos como filmes ultrafinos de PAH/PEDOT:PSS influenciam a permeabilidade do metanol e a condução protônica de membranas de Nafion® modificadas com filme LbL. Os resultados indicaram boa aderência dos filmes nanoestruturados sobre o Nafion® 212, e ainda boa atuação como barreira à passagem de metanol. No entanto, junto com o bloqueio à passagem de metanol houve redução na condução protônica, que ocorre pelo fato da técnica LbL por imersão depositar material em ambos os lados no Nafion® 212, aprisionando a água no interior da membrana, que certamente afeta a condução protônica. Adicionalmente, a deposição do filme LbL pode estar usando alguns agrupamentos químicos importantes na superfície do Nafion®, utilizados para permeação de água, também afetando a condução protônica através da membrana.
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Chivers, Benjamin William. "Development of Novel PEDOT:PSS Fabrication Techniques for High Performance, Flexible RFID Antennas and Energy Storage Devices." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/20155.

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Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) has been widely studied as either nanometre-scale, transparent films or a conductive, capacitive composite material in electronic devices. While significant effort has been directed towards increasing PEDOT:PSS conductivity in transparent films, very little nanoscale, morphological consideration has been applied to micron-scale PEDOT:PSS materials. As a result, PEDOT:PSS conductivity often decreases in micron-scale materials, and the polymer has been largely overlooked as a high performance material in practical applications. In this thesis, PEDOT:PSS fabrication techniques are optimised to produce high conductivity and high electrochemical performance micron-scale quantities of PEDOT:PSS. The optimised PEDOT:PSS is used to fabricate an RFID antenna with extraordinary radiation efficiency, a high efficiency zinc/bromine flow battery anode, and an ultra-high performance composite-fibre-supercapacitor. A novel fabrication technique was developed to maintain PEDOT:PSS electrical and electrochemical performance in micron-scale applications. By submersion in ethylene glycol, PEDOT:PSS phase separation, conformational changes, stability and PEDOT loading were optimised for a commercially available PEDOT:PSS. Polymer films 40 m thick were reliably produced with over 500 S cm-1. The high performance PEDOT:PSS was fabricated into a 2.45 GHz RFID dipole antenna, achieving 99.7% peak radiation efficiency, a novel result for a non-metal antenna. The same morphologically considerate approach was applied to zinc/bromine flow battery anode design, more than doubling peak charge density. Energy density increased by over 50%, and charge efficiency increased by 9.3%, directly increasing battery efficiency. PEDOT:PSS was composited with reduced graphene oxide to produce a symmetric fibre supercapacitor with very high capacitance, 138 F cm-3 compared to 55 F cm-3 and 14 F cm-3 for PEDOT:PSS and rGO respectively.
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9

GALLIANI, DANIELA. "Poly(3,4-ethylendioxythiophene) based materials for thermoelectric applications." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2018. http://hdl.handle.net/10281/199131.

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I polimeri intrinsecamente conduttori sono una classe di materiali con caratteristiche uniche. In quanto materiali polimerici sono leggeri e flessibili, possono essere facilmente processati e stampati. Al contempo, però, possono condurre corrente elettrica, raggiungendo anche conducibilità metalliche. Questa combinazione eccezionale ha consentito lo sviluppo di dispositivi elettronici stampati e flessibili, i quali risultano interessanti nell’ambito dei dispositivi portabili, sia integrati nel corpo umano sia indossabili. L’applicazione termoelettrica di questi polimeri conduttori ha recentemente guadagnato rilievo in campo scientifico. Un dispositivo termoelettrico (organico) può convertire il calore in energia elettrica grazie all’effetto Seebeck. Il dispositivo può così recuperare il calore di scarto dissipato in tutti i processi che coinvolgono il consumo di energia e trasformarlo in energia utilizzabile. Anche se i polimeri conduttori hanno già mostrato interessanti proprietà termoelettriche, il loro utilizzo in questo campo è ancora molto limitato per via delle basse efficienze di conversione termoelettrica raggiunte finora, che impediscono a questi materiali di essere competitivi con i più diffusi materiali inorganici per questa applicazione, ovvero i tellururi. Il design di un polimero conduttore che abbia elevate prestazioni termoelettriche parte necessariamente da una conoscenza approfondita di quali tecniche e trattamenti influenzino le proprietà finali di trasporto di carica. La complessità intrinseca di questi sistemi, tuttavia, rende spesso difficoltoso ottenere queste informazioni, impedendo la comprensione di fenomeni coinvolti. Questo progetto di dottorato ha riguardato lo studio dell’impatto di diversi parametri sulle proprietà termoelettriche dei polimeri conduttori, con lo scopo di raggiungere una comprensione approfondita di come il trasporto di carica ne venga influenzato. Nello specifico, lo studio ha riguardato il poli(3,4-etilendiossitiofene) -PEDOT-, il quale è stato studiato modificando diversi parametri a tre livelli di perturbazione del sistema. In primo luogo, un’indagine è stata svolta sul ruolo delle condizioni di polimerizzazione e su quello dei trattamenti effettuati dopo la polimerizzazione. In particolare, è stata studiata l’influenza di diverse tecniche di polimerizzazione, diversi ossidanti e diversi solventi sulla vi qualità finale del film polimerico. Inoltre, il livello di ossidazione del PEDOT è stato modificato dopo la polimerizzazione, ottenendo un’ottimizzazione dell’efficienza termoelettrica. Ad un secondo livello di perturbazione, la struttura molecolare del monomero è stata modificata per preparare un copolimero. Il copolimero includeva una porzione centrale coniugata (e quindi, conduttiva) e due porzioni laterali non coniugate (isolanti), che hanno comportato una modifica sostanziale delle proprietà di trasporto del materiale finale. I risultati ottenuti sulla nuova struttura mostrano la versatilità di questa strategia e come le proprietà di trasporto possano essere finemente modificate grazie all’introduzione di modifiche della struttura molecolare. Infine, al terzo livello, le proprietà macroscopiche del PEDOT sono state modificate grazie all’introduzione di nanostrutture di natura inorganica. Questa strategia è solitamente utilizzata per migliorare l’efficienza termoelettrica dei materiali inorganici, grazie agli effetti benefici dovuti alla nanostrutturazione. Due tipologie diverse di nanoparticelle di ossidi metallici (CuO e Mn3O4) sono state sintetizzate in diverse forme e dimensioni e introdotte nella matrice di PEDOT in diverse concentrazioni. Grazie allo studio dell’effetto dell’umidità sulle proprietà di trasporto ed allo studio sulla variazione dello stato di ossidazione è stato possibile ottenere nuove informazioni sul comportamento elettrico dei nanocompositi.
Intrinsically conductive polymers (ICPs) are a class of organic materials characterized by unique features. They are lightweight, flexible and easy to process and print, as expected from polymers, but, also, they can conduct electricity up to metallic conductivities. Such an exceptional pairing of characteristics enables the development of flexible and printed electronic devices, which are of a particularly appealing for portable electronic devices, even integrated in the human body (e.g. implantable biosensors) or worn (e.g. smartwatches). Even thermoelectric (TE) application of ICPs recently gained a lot of attention. An organic TE generator (OTEG) can convert heat into electrical energy by means of the Seebeck effect. This technology aims to recover heat produced as low-grade side-product of energy consumption and to transform it into exploitable energy. Even though ICPs showed promising TE properties, their use is still hindered by low TE efficiencies, which cannot compete with the inorganic benchmark (i.e. tellurides). The design of better ICPs for TE application must start from a deep knowledge of which techniques and treatments impact the charge transport features. The intrinsic complexity of ICP systems, however, often makes this task difficult, preventing a full comprehension of the phenomena involved. This PhD project focused on the impact of different parameters on TE properties of ICPs, aiming at the needed deeper understanding on how charge transport is affected. The specific ICP poly(3,4-ethylendioxythiophene) -PEDOT- was investigated modifying different parameters at three different levels of system perturbation. First, the role of polymerization conditions and post-polymerization treatments was studied. Different polymerization techniques, oxidants and solvents have been used for the same ICP, and the occurring changes have been investigated. Moreover, PEDOT oxidation level was tuned to optimize TE efficiency. At a second level, the monomer molecular structure was modified to prepare a PEDOT-based copolymer. The copolymer included conjugated (i.e. conductive) and not conjugated (i.e. not conductive) portions, which deeply impacted the charge transport behaviour. The results show the versatility of this strategy, still barely explored in TE field, and how final transport properties can be finely tuned by means of molecular modifications. Finally, at a third level, PEDOT macroscopic features were tuned by embedding inorganic nanostructure. Such a strategy is usually exploited to improve TE efficiency by means of nanostructuration beneficial effects already known in inorganic materials. Nanoparticles of two different metal oxides (CuO and Mn3O4) of different size and shape were dispersed in PEDOT matrix. Evaluation of humidity and oxidation level effects on charge transport features allowed to obtain novel insights into transport properties in nanocomposites.
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Cao, Zhixiong. "Silver nanoprisms in plasmonic organic solar cells." Thesis, Ecole centrale de Marseille, 2014. http://www.theses.fr/2014ECDM0015/document.

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On constate une forte demande mondiale d' énergie propre et renouvelable en raison de la consommation rapide des combustibles fossiles non renouvelables et l'effet de serre qui en résulte. Une solution prometteuse pour produire une énergie propre et renouvelable est d'utiliser des cellules solaires pour convertir l' énergie solaire directement en électricité. Comparativement à leurs homologues inorganiques, les cellules solaires organiques (OSCs) sont maintenant intensivement étudiées en raison des avantages tels que le poids léger, la flexibilité, la compatibilité avec les procédés de fabrication à faibles coûts. Malgré ces avantages, l'efficacité de conversion (PCE) des OSCs doit encore être améliorée pour la commercialisation à grande échelle. Les cellules solaires organiques sont réalisées en pile de couches minces comprenant des électrodes, la couche de transport d' électrons, la couche de polymère actif et la couche de transport de trous. Dans cette étude, nous sommes concernés par la couche de PEDOT:PSS qui est couramment utilisée comme une couche tampon entre l'électrode anodique et la couche de polymère actif de cellules solaires organiques. Cette étude vise à intégrer différentes concentrations de nanoprismes (NPSMs) d'argent de taille sub-longueur d'onde dans du PEDOT: PSS afin de profiter de leurs propriétés optiques uniques nées de résonances de plasmons de surface localisées (LSPR) pour améliorer la collecte lumineuse et l'efficacité de génération de charge en optimisant l' absorption et la diffusion de la lumière. Nous avons constaté que les facteurs clés qui contrôlent les performances des cellules solaires plasmoniques comprennent non seulement les propriétés optiques, mais également les propriétés structurelles et électriques des couches hybrides de PEDOT:PSS comprenant des NPSMs d' Ag. D'une part, l'ajout de NPSMs d' Ag conduit ¨¤ (1) une augmentation de l'absorption optique; (2) de la diffusion de la lumière ¨¤ de grands angles ce qui pourrait conduire ¨¤ un meilleur piégeage de la lumière dans les OSCs. D'autre part, (1) la rugosité de surface est augment¨¦e en raison de la formation d'agglomérats de NPSMs d' Ag, ce qui conduit ¨¤ une meilleure efficacité de collecte de charge; (2) la résistance globale des films hybrides est également augment¨¦e en raison de l'excès de PSS introduit par les NPSMs d' Ag incomplètement purifiées, inférieur courant de court-circuit (Jsc) qui en résulte; (3) les Ag NPSMs et leurs agglomérats ¨¤ l'interface PEDOT:PSS/couche photo-active pourraient agir comme des centres de recombinaison, conduisant ¨¤ une réduction de la résistance de shunt, du Jsc et de la tension en circuit ouvert (Voc). Afin de résoudre partiellement l'inconvénient (2) et (3), en intégrant des NPSMs d¡¯Ag davantage purifiés et une petite quantité de glycérol dans le PEDOT:PSS, la résistance des couches hybrides de PEDOT:PSS-Ag-NPSMs peut ¨être réduite à une valeur comparable ou inférieure ¨¤ celles couches vierges. Les futurs progrès en chimie de surface colloïdale et l'optimisation sur le processus d'incorporation des nanoparticules seront nécessaires pour produire des cellules solaires organiques plasmoniques de meilleures performances
Nowadays there has been a strong global demand for renewable and clean energy due to the rapid consumption of non-renewable fossil fuels and the resulting greenhouse effect. One promising solution to harvest clean and renewable energy is to utilize solar cells to convert the energy of sunlight directly into electricity. Compared to their inorganic counterparts, organic solar cells (OSCs) are now of intensive research interest due to advantages such as light weight, flexibility, the compatibility to low-cost manufacturing processes. Despite these advantages, the power conversion efficiency (PCE) of OSCs still has to be improved for large-scale commercialization. OSCs are made of thin film stacks comprising electrodes, electron transporting layer, active polymer layer and hole transporting layer. In this study, we are concerned with PEDOT:PSS layer which is commonly used as a buffer layer between the anodic electrode and the organic photoactive layer of the OSC thin film stack. We incorporated different concentrations of silver nanoprisms (NPSMs) of sub-wavelength dimension into PEDOT:PSS. The purpose is to take advantage of the unique optical properties of Ag MPSMs arisen from localized surface plasmon resonance (LSPR) to enhance the light harvest and the charge generation efficiency by optimizing absorption and scattering of light in OSCs. We found that the key factors controlling the device performance of plasmonic solar cells include not only the optical properties but also the structural and electrical properties of the resulting hybrid PEDOT:PSS-Ag-NPSM-films. On one hand, the addition of Ag NPSMs led to (1) an increased optical absorption; (2) light scattering at high angles which could possibly lead to more efficient light harvest in OSCs. On the other hand, the following results have been found in the hybrid films: (1) the surface roughness was found to be increased due to the formation of Ag agglomerates, leading to increased charge collection efficiency; (2) the global sheet resistance of the hybrid films also increases due to the excess poly(sodium styrenesulphonate) introduced by incompletely purified Ag NPSMs, resulting in lower short circuit current (Jsc); (3) the Ag nanoprisms and their agglomerates at the PEDOT:PSS/photoactive layer interface could act as recombination centers, leading to reductions in shunt resistance, Jsc and open circuit voltage (Voc). In order to partially counteract the disadvantage (2) and (3), by incorporating further purified Ag NPSMs and/or a small amount of glycerol into PEDOT:PSS, the sheet resistance of hybrid PEDOT:PSS-Ag-NPSM-films was reduced to a resistance value comparable to or lower than that of pristine film
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Частини книг з теми "NANOCOMPOSITE AND PEDOT: PSS"

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Wang, Guang Feng, Xiao Ming Tao, Wei Chen, Rong Xin Wang, and Pu Xue. "Study of OLEDs with Nanocomposites of MWNT Modified PEDOT: PSS." In Advances in Composite Materials and Structures, 861–64. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-427-8.861.

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Ansari, Arshiya, Shahzad Ahmed, Moin Ali Siddiqui, Devendra Singh Negi, and Pranay Ranjan. "TiO2/PEDOT: PSS Hybrid Matrix for Optoelectronic Devices." In Springer Proceedings in Materials, 67–73. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-4685-3_10.

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3

Bindu, S., R. Anil Kumar, and M. S. Suresh. "Development of Technique for Making Ohmic Contacts to PEDOT-PSS Films." In Lecture Notes in Electrical Engineering, 217–22. India: Springer India, 2013. http://dx.doi.org/10.1007/978-81-322-1524-0_28.

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4

Zheng, Ling, Guodong Liu, and Yu Liu. "Preparation of Paper-Based PEDOT: PSS Conductive Film Using Gravure Printing." In Advances in Graphic Communication, Printing and Packaging Technology and Materials, 707–11. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0503-1_100.

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5

Zhang, Zhilin, Hude Ma, Lina Wang, Xinyi Guo, Ruiqing Yang, Shuai Chen, and Baoyang Lu. "Stretchable, Conducting and Large-Range Monitoring PEDOT: PSS-PVA Hydrogel Strain Sensor." In Intelligent Robotics and Applications, 305–14. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-13822-5_27.

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Lang, Udo, and Jürg Dual. "Mechanical Properties of the Intrinsically Conductive Polymer Poly(3,4- Ethylenedioxythiophene) Poly(Styrenesulfonate) (PEDOT/PSS)." In The Mechanical Behavior of Materials X, 1189–92. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-440-5.1189.

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7

Sachchidanand and Dip Prakash Samajdar. "Optoelectronic Simulation of PEDOT: PSS/C-Si Hybrid Solar Cells for Different Combinations of Nanostructures." In Lecture Notes in Electrical Engineering, 401–10. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5089-8_39.

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Chang, Sheng Hsiung, Sheng Hsiung Chang, Cheng-Chiang Chen, Hsin-Ming Cheng, and Sheng-Hui Chen. "Structural, Optical, Electrical and Electronic Properties of PEDOT: PSS Thin Films and Their Application in Solar Cells." In Printable Solar Cells, 263–88. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781119283720.ch8.

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Prashant, D. V., Dip Prakash Samajdar, and Sachchidanand. "Optical Simulation of III-V Semiconductor Nanowires/PEDOT: PSS-Based Hybrid Solar Cells: Influence of Polymer Coating Thickness and Geometrical Parameters on Light Harvesting and Overall Photocurrent." In Lecture Notes in Electrical Engineering, 361–68. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5089-8_34.

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"Inkjet Printing and Patterning of PEDOT-PSS: Application to Optoelectronic Devices." In Conjugated Polymers, 165–86. CRC Press, 2006. http://dx.doi.org/10.1201/b10739-9.

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Тези доповідей конференцій з теми "NANOCOMPOSITE AND PEDOT: PSS"

1

Ksapabutr, B., B. Lertpanyapornchai, and M. Panapoy. "Improvement of electrical property in MWCNTs/PEDOT-pss nanocomposite films via microwave treatment." In 2008 2nd IEEE International Nanoelectronics Conference. IEEE, 2008. http://dx.doi.org/10.1109/inec.2008.4585456.

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Tiwari, D. C., Shailendra Kumar Dwivedi, Pukhrambam Dipak, and Tarun Chandel. "PEDOT: PSS: rGO nanocomposite as a hole transport layer (HTLs) for P3HT:PCBM based organic solar cells." In 2ND INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5033001.

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3

Albert, Ancy, N. Sreelekshmi, I. Jinchu, K. S. Sreelatha, and C. O. Sreekala. "Electron trapping action of functionalized carbon nanotubes and PEDOT: PSS nanocomposite in inverted perovskite solar cell." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS: ICAM 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5130332.

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KUKHTA, A., and P. KHANNA. "OXYGEN SENSING OF NANOCOMPOSITES CONSISTING OF PEDOT: PSS AND FUNCTIONALIZED GOLD NANOPARTICLES." In Proceedings of International Conference Nanomeeting – 2013. WORLD SCIENTIFIC, 2013. http://dx.doi.org/10.1142/9789814460187_0060.

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Okuzaki, H., K. Hosaka, H. Suzuki, and T. Ito. "Electrically driven PEDOT/PSS actuators." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Yoseph Bar-Cohen. SPIE, 2010. http://dx.doi.org/10.1117/12.847385.

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Lu, Fei, Yan Chen, Xiling Mao, Lu Xu, and Jianhua Xu. "PEDOT: PSS/PEDOT composite film for high performance electrochemical electrode." In MATHEMATICAL SCIENCES AND ITS APPLICATIONS. Author(s), 2017. http://dx.doi.org/10.1063/1.4971897.

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Hagino, Harutoshi, Masahiro Hokazono, Hiroaki Anno, Naoki Toshima, and Koji Miyazaki. "Thermal Transport Property of PEDOT-PSS Thin Films." In The 15th International Heat Transfer Conference. Connecticut: Begellhouse, 2014. http://dx.doi.org/10.1615/ihtc15.tel.009096.

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Ohnishi, Reina, Kyoko Kojima, Kuniaki Tanaka, and Hiroaki Usui. "Electrospray Deposition of PEDOT-PSS and Electrochemical Characterization." In 2005 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2005. http://dx.doi.org/10.7567/ssdm.2005.p10-13l.

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Chang, Cheng-Lin, Kayla Fix, and Wei-Chih Wang. "Reliability of PEDOT-PSS strain gauge on foam structure." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Vijay K. Varadan. SPIE, 2010. http://dx.doi.org/10.1117/12.847701.

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Zabidi, Z. M., A. N. Alias, S. H. Khalid, and N. F. M. Sahapini. "Optical properties of hybrid PEDOT-PSS: ZnO thin film." In INTERNATIONAL CONFERENCE ON FUNDAMENTAL AND APPLIED SCIENCES 2012: (ICFAS2012). AIP, 2012. http://dx.doi.org/10.1063/1.4757555.

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