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Dissertations / Theses on the topic 'Polymers Polymers Thin film transistors'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Chen, Yi 1974. "Organic thin film transistors based on conjugated polymers." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81533.

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Thin film transistors with different polymers (PTFTs) as active channel layers have been fabricated and studied in this work. Three different fabrication procedures were used to fabricate long and short channel PTFTs on silicon substrates and long channel PTFTs on glass substrates. It has been shown that the success rate of fabrication of PTFTs on glass substrates with anodic Al 2O3 gate dielectrics is higher than that on silicon substrates with thermally grown SiO2 gate dielectrics.<br>The characteristics of PTFTs fabricated using several polymers were studied. Among them, the ones bas

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2

MacNab, Finlay. "Thin film transistors from II-IV semiconductors on polymer substrates." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101620.

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A chemical bath deposition technique has been used in the fabrication of thin film transistors (TFT), which have been deposited on a 200mum polymer substrate. This thesis documents the chemistry and microfabrication techniques used to create the TFTs. Because TFTs have not been fabricated on plastics in this manner before, insights gained from understanding the mechanical properties of the polymer, and how these interact with those of the inorganic components of the TFTs, were used to guide development of processes specifically suited to adapt the polymer to TFT fabrication.

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3

Xu, Zongxiang, and 许宗祥. "Organic thin film transistors and solar cells fabricated with [pi]-conjugated polymers and macrocyclic materials." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B42182554.

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4

Xu, Zongxiang. "Organic thin film transistors and solar cells fabricated with [pi]-conjugated polymers and macrocyclic materials." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B42182554.

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5

Bangcuyo, Carlito Ganayo. "Synthesis of heterocyclic poly(aryleneetheynylene)s." Available online, Georgia Institute of Technology, 2006, 2004. http://etd.gatech.edu/theses/available/etd-01112005-182450/.

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Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2007.<br>Tolbert, Laren, Committee Member ; Weck, Marcus, Committee Member ; Bunz, Uwe, Committee Chair ; Srinivasarao, Mohan, Committee Member.

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6

Lei, Yanlian. "Morphology and microstructure control of conjugated polymer thin films for high performance field-effect transistors." HKBU Institutional Repository, 2016. https://repository.hkbu.edu.hk/etd_oa/321.

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Charge transport in semiconductor channels of organic field-effect transistors (FETs) depends largely on the molecular ordering of organic semiconductor molecules. This is particularly demanding for polymer-based FETs, where channel semiconductors are non-molecular in nature, and generally form semiconductor films of low crystallinity. As a result, great theoretical and practical interests have been directed towards facile solution processes that can transform a low molecular weight (MW) and low mobility conjugated polymer into a high crystalline order and high-mobility semiconductor. This res

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7

Guo, Xugang. "IMIDE-FUNCTIONALIZED CONJUGATED POLYMERS: SYNTHESIS, STRUCTURE-PROPERTY AND DEVICE STUDIES." Lexington, Ky. : [University of Kentucky Libraries], 2009. http://hdl.handle.net/10225/1100.

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Thesis (Ph. D.)--University of Kentucky, 2009.<br>Title from document title page (viewed on October 29, 2009). Document formatted into pages; contains: xvi, 227 p. : ill. (some col.). Includes abstract and vita. Includes bibliographical references (p. 207-224).

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8

Seger, Mark J. "OPTIMIZATION OF THE OPTICAL AND ELECTROCHEMICAL PROPERTIES OF DONOR-ACCEPTOR COPOLYMERS THROUGH FUNCTIONAL GROUP AND SIDE CHAIN MODIFICATION." UKnowledge, 2013. http://uknowledge.uky.edu/chemistry_etds/25.

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Donor-acceptor copolymers have received a great deal of attention for application as organic semiconductors, in particular as the active layers in low-cost consumer electronics. The functional groups grafted to the polymer backbones generally dictate the molecular orbital energies of the final materials as well as aid in self-assembly. Additionally, the side chains attached to these functional groups not only dictate the solubility of the final materials, but also their morphological characteristics. The bulk of the research presented in this dissertation focuses on the synthesis and structure

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9

Park, June Hyoung. "Charge transport in organic multi-layer devices under electric and optical fields." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1182273300.

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10

Lloyd, Giles Christian Rome. "Novel conjugated polymer thin film transistors." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399071.

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11

Huang, Shou. "Development and design of polymer circuits based on polymer thin-film transistors." Thesis, University of Liverpool, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437503.

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Before 1870, Britain had been able to rely on naval and financial strength to protect her empire where necessary until such time as the expected separation of the settlement colonies into independent polities occurred. However, a series of changes in geopolitics, and in naval technology had undermined this security and had resulted in an increased awareness in military, naval, colonial and imperial circles - among those characterised as "Jingoes" - of the dangers to which the empire was exposed. Spurred on by the Balkan crisis of 1876-78, a far more active approach was taken to war planning, w

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12

Pecunia, Vincenzo. "Solution-based polymeric/metal-oxide thin-film transistors and complementary circuits." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708401.

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13

Herlogsson, Lars. "Electrolyte-Gated Organic Thin-Film Transistors." Doctoral thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69636.

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There has been a remarkable progress in the development of organic electronic materials since the discovery of conducting polymers more than three decades ago. Many of these materials can be processed from solution, in the form as inks. This allows for using traditional high-volume printing techniques for manufacturing of organic electronic devices on various flexible surfaces at low cost. Many of the envisioned applications will use printed batteries, organic solar cells or electromagnetic coupling for powering. This requires that the included devices are power efficient and can operate at lo

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14

Chang, Jui-Fen. "Charge transport mechanisms of microcrystalline conjugated polymer thin film transistors." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597440.

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This thesis is concerned with a prototype microcrystalline semiconducting polymer, poly(3-hexylthiophene) (P3HT), incorporated into a thin-film transistor structure in a bottom gate configuration with n-doped silicon as gate contacts and SiO<sub>2</sub> as gate dielectric. The mechanisms to influence the charge transport in P3HT thin films are investigated in detail from experiments and theoretical analyses. Crystallisation of P3HT polymer during the spin-coating process is limited by the drying time of solvent. Compared with the most commonly used solvent, chloroform, it is demonstrated that

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15

Dann, A. J. "Phthalocyanine polymers." Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376167.

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16

Bain, Stephen. "Kelvin force microscopy of polymer and small molecule thin-film transistors." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/341044/.

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By their nature, scanning probe microscopy (SPM) measurements are ideally suited to the study of organic thin-film transistors (TFTs). In Chapter 3 surface potential measurements are made on TFTs made from the polymer pBTTT. The modification of the surface morphology by annealing into the liquid crystalline phase is examined and the separation between crystalline layers is found to be in agreement with the literature. Kelvin force gradient microscopy (KFGM) measurements provide a very detailed picture of the local potential within the channel of the TFT, allowing for the separation of the devi

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17

Jiang, Long. "Crystallization and phase separation in thin film polymers." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:3288a4fa-1ee8-4f20-a192-4e4c67cfe994.

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Properties of polymers in thin films are distinct from those in the bulk due to the significant effects of free or substrate surfaces. The presence of a free surface allows an increased mobility of polymer chains in the near surface region, therefore, a lower glass transition temperature (T<sub>g</sub>). With this lower surface T<sub>g</sub>, a surface-specific crystallization phenomenon occurring at temperatures much lower than the bulk crystallization temperature (T<sub>c</sub>) in polymers including PET, PEN and PVOH has previously been observed. However, whether or not this surface-specifi

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18

Larsson, Oscar. "Polarization characteristics in polyelectrolyte thin film capacitors : Targeting field-effect transistors and sensors." Licentiate thesis, Norrköping : Department of Science and technology, Linköping University, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-51547.

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19

Wang, Yongjian. "Dewetting instability of polymer thin film /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202006%20WANG.

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20

O'Shaughnessy, Wm Shannan. "Functional thin film polymers for biopassivation of neuroprosthetic implants." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/38965.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2007.<br>Includes bibliographical references.<br>Neuroprosthetics is the investigation of methods to control external electronic devices utilizing recorded neuronal firing patterns. These investigations are crucial to the quality of life of quadriplegic patients. Central to this field is the ability to implant neural recording probes within the brain that will remain functional over the life of the patient. In this work, two novel polymeric materials for use in biopassive neural probe coatings have been deve

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21

Zhang, Xueyun. "Polymer thin film dewetting : fundamentals and applications /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202005%20ZHANG.

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22

Hannah, Stuart. "Force and temperature sensors based on organic thin-film transistor and ferroelectric co-polymer." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28575.

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This thesis presents the development of tactile force and temperature sensors formed by coupling an organic thin-film transistor with a ferroelectric polymer-based parallel-plate capacitor. Ferroelectric material polyvinylidene fluoride trifluoroethylene (P(VDF-TrFE)) sandwiched between two metal electrodes in a parallel plate capacitor structure was coupled to the gate electrode of a low-voltage organic thin-film transistor (OTFT) for signal amplification and voltage readout. To ensure low-voltage operation of the sensing circuit, low-voltage transistor operation was necessary. This was enabl

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23

Bandyopadhyay, Diya. "Controlling Polymer Thin Film Instabilities Via Tuning of Polymer-Substrate Interactions and Suppression of Capillary Waves." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1341551623.

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24

Jones, Gavin B. "Investigating self-assembled monolayers and understanding small molecule/polymer blend thin-films in organic field-effect transistors." Thesis, University of Warwick, 2015. http://wrap.warwick.ac.uk/71007/.

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Organic Thin-Film Transistors (OTFTs) are now surpassing the performance of amorphous silicon based devices which once set the benchmark. State of the art development of OTFTs in active-matrix organic light emitting diodes (OLEDs) for flexible displays has shown the potential for future applications utilising organic materials. This unprecedented advancement of flexible base electronics is now at the forefront of research and development in the electronics industry. Although charge-carrier mobility has now exceeded expectations the processing of organic materials and device functionality is st

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25

Ren, He. "Towards High Performance Pedot: PSS-Free Polymer Solar Cells with Solution-Processed Metal Oxide Thin film as Hole Extraction Layer." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1406378486.

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26

Manepalli, Rahul Nagaraj. "Electron beam curing of thin film polymer dielectrics." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/11036.

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27

STRICKER, JEFFERY T. "ORGANIC ELECTRONIC DEVICES USING CROSSLINKED POLYELECTROLYTE MULTILAYERS AS AN ULTRA-THIN DIELECTRIC MATERIAL." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1157640369.

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28

Rao, Nanxia Zhu Da-Ming. "An atomic force microscopy study of dewetting process of polystyrene film prepared from solution." Diss., UMK access, 2005.

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Thesis (Ph. D.)--Dept. of Physics and Dept. of Mathematics. University of Missouri--Kansas City, 2005.<br>"A dissertation in physics and mathematics." Advisor: Da-Ming Zhu. Typescript. Vita. Title from "catalog record" of the print edition Description based on contents viewed June 26. 2006. Includes bibliographical references (leaves 84-87). Online version of the print edition.

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29

Cai, Zhuoyun. "Tuning the Stability of Polymer Thin Films via Applied Voltage." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1525798651549032.

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30

Beck, Catherine Keel. "Characterization of Spin Coated Polymers in Nano-environments as a Function of Film Thickness." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/34548.

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Polymer applications have become more demanding as industry continuously turns to more microscopic parts. Due to the interactions of the polymer chains with the supporting surface and the air interface, the thinner films required for such applications have distinctly different properties than those of the well-defined bulk systems. The goal of the current research is to elucidate the behavior of ultrathin films. Two separate studies were performed on thin films supported on silicon wafer substrates: the first focuses on the viscoelastic cooperativity of thin films, and the second conce

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31

Yuan, Hongyi. "Structures and Properties of Polymer Nanocomposite Sub-Micron Thin Films." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1399299085.

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32

Wang, Zhendong. "Photophysics of Single-walled Carbon Nanotubes and Thin-film Conjugated Polymers Within π-electron Model". Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/195107.

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Electron-electron interaction effects play important role in the photophysics of complex organic materials such as π-conjugated polymers and single-walled carbon nanotubes. Our theoretical work within a π-electron model captures the essential mechanism of the photophysics in these apparently different π-conjugated systems. In both polymer and nanotube systems, we not only explain existing experiments but also make testable predictions. In the area of π-conjugated polymers, we develop a theory of the electronic structure and photophysics of interacting chains to understand the differences betwe

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33

Spain, Darin R. (Darin Rodney) 1975. "Fracture toughness measurements of thin film silicone polymers using the modified edge lift-off test." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/88865.

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34

Hsieh, I.-Fan. "Pattern Formation and Phase Behavior in PS-B-SI Containing Block Copolymer Thin Film." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1364835896.

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35

Hsu, Chih-Hao. "Hierarchical Supramolecular Structures based on Molecular Nanoparticles from Bulk to Thin Film State." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1406630381.

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36

Rodriguez, Ana Belen Rodriguez. "An experimental study of the correlation between the structure and properties of model polymer light emitting diodes and organic thin film transistors." Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.512004.

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37

Martin, Justin J. "Construction of self-assembled inorganic interfaces as a method for tuning conducting polymer thin film sheet conductivity." Diss., Online access via UMI:, 2007.

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38

Wilkop, Thomas. "Thin film calixresorcinarene membranes for chemical sensing." Thesis, Sheffield Hallam University, 2001. http://shura.shu.ac.uk/20538/.

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Novel applications for calix[4]recorcinarene (C[4]RA) sensing membranes have been investigated. A comprehensive deposition study was carried out, encompassing casting, spin coating and Langmuir Blodgett (LB) deposition. The spin coating thickness depended on the angular velocity w, following the description of d = c.wx with coefficients of x - 0.44 and - 0.48 for concentrations of 1 mg/ml and 2mg/ml respectively. The analysis of the LB deposited films established a thickness of 0.95 nm for a monolayer. Furthermore the C[4]RA, was successfully employed as a deposition matrix for a non surface a

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39

Gaitis, Alexandre. "Etude et développement de diélectriques avancés pour des transistors imprimés low-voltage." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT032.

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Cette thèse s'articule autour de l'étude des diélectriques à haute permittivité et de leur implémentation dans la structure des transistors organiques afin de proposer une solution pour réduire leurs tensions de fonctionnement tout en restant compatible avec des processus de fabrication par impression.La première partie cette thèse se concentre sur la théorie des semi-conducteurs et transistors organiques ainsi que les différentes approches de réduction de tensions proposées dans la littérature.Elle se focalisera ensuite sur l'étude des propriétés diélectriques de matériaux polymère à haute pe

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40

Hsu, Yu-Jen. "The Integration and Applications of Organic Thin Film Transistors and Ferroelectric Polymers." Thesis, 2012. https://doi.org/10.7916/D8NV9R76.

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Organic thin film transistors and ferroelectric polymer (polyvinylidene difluoride) sheet material are integrated to form various sensors for stress/strain, acoustic wave, and Infrared (heat) sensing applications. Different from silicon-based transistors, organic thin film transistors can be fabricated and processed in room-temperature and integrated with a variety of substrates. On the other hand, polyvinylidene difluoride (PVDF) exhibits ferroelectric properties that are highly useful for sensor applications. The wide frequency bandwidth (0.001 Hz to 10 GHz), vast dynamic range (100n to 10M

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41

Min-ChenTsai and 蔡旻辰. "Studies on the electrical stability of poly(3-hexylthiophene) based thin film transistors with insulating polymers." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/75930762376963342963.

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碩士<br>國立成功大學<br>光電科學與工程學系<br>103<br>This study investigated the electrical characteristics and stability of poly(3-hexylthiophene) (P3HT)-based organic thin film transistors (OTFTs) with insulating polymers. In the first part, we studied the effects of the molecular weight of insulating poly(methyl methacrylates) (PMMA), which serve as a gate dielectric buffer layer, on the electrical characteristics of these P3HT-based OTFTs. In a nitrogen environment, the P3HT-based OTFTs based on PMMA buffers with various molecular weights all showed high electrical stability. In ambient air, we continued t

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42

Lee, Kwang Seok 1973. "Water-dispersible, conductive polyaniline for organic thin-film electronics." Thesis, 2007. http://hdl.handle.net/2152/3733.

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43

Sangeeth, Suchand C. S. "Charge Transport In Conducting Polymers, Polymer-Carbon Nanotube Composites And Devices." Thesis, 2012. http://etd.iisc.ernet.in/handle/2005/2279.

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The Thesis reports charge transport studies on conducting polymers, polymer carbon nanotube composites and organic semiconductor devices. Conducting and semiconducting polymers consisting of π-conjugated chains have attracted considerable attention as they combine the optoelectronic properties of semiconductors with mechanical properties and processing advantages of plastics. The chemical/electrochemical/photodoping of these semiconducting polymers can tune the Fermi levels and conductivity in a controlled way, and hence the properties of devices can be easily tailored to suit in several appl

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44

Kanimozhi, K. Catherine. "Rational Design of Diketopyrrolopyrrole-Based Conjugated Polymers for Ambipolar Charge Transport." Thesis, 2013. http://etd.iisc.ernet.in/2005/3389.

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The present thesis is focused on the rational design of Diketopyrrolopyrrole based π- conjugated polymers for organic electronics. The thesis is organized into six different chapters and a brief description of the individual chapters is provided below. Chapter 1 briefly describes the physics governing the electronic processes occurring in organic photovoltaics (OPVs) and organic field-effect transistors (OFETs) followed by design rules for the synthesis of conjugated polymers for organic electronics. Diketopyrrolopyrrole (DPP) based π-conjugated materials and their development in OPVs and OFET

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45

Lin, Song-Di, and 林松笛. "Synthesis of Conjugated Polymers Based on Bis-(Dithienopyrrole-2-yl)vinylene Unit for Organic Thin Film Transistor Applications." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/98310631106861123026.

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碩士<br>國立交通大學<br>應用化學系分子科學碩博士班<br>105<br>Abstract This research is aimed to design and synthesize three new conjugated polymers which have the feature of high planarity and low bandgaps in order to be applied in the organic field-effect transistors (OFETs). The newly designed electron donor unit which contain bis(dithienopyrrole)ethene core unit is successfully synthesized.The bis(dithienopyrrole)ethane was coplymerized with dithieno-diketopyrrolopyrrole and ditheno-difluoro-benzo-thiadiazole to yield PB(C12-DTP)V-DTDPP-C12C8, PB(C12-DTP)V-DTDPP-C12 and PB(C12-DTP)V-DTFBT-C8. The obtained polym

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46

Chiu, Chun-Chieh, and 邱鈞杰. "Synthesis and Characterization of Conjugated Polymers Based on Thiophene and Thienothiophene Fused Hexacyclic Unit and [2-(Thiophen-2-yl)vinyl]thiophene Unit for Organic Thin Film Transistor Applications." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/5d873k.

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碩士<br>國立交通大學<br>應用化學系碩博士班<br>101<br>In this study, two series of conjugated polymers were synthesized for the application of organic thin film transistor（OTFT）. For the first series, a hexacylic ladder monomer（TTDT） consisting of two thiophenes and a thieno[3,2-b]thiophene ring was synthesized. The TTDT monomer was copolymerized with thiophene（T）, thieno[3,2-b]thiophene（TT）, bithiophene（2T）to form the alternating copolymers PTTDT-T, PTTDT-TT and PTTDT-2T. The OTFT devices based on PTTDT-T, PTTDT-TT and PTTDT-2T show the mobilities of 1.52×10-3, 1.62×10-3, 2.83×10-3 cm2s-1V-1 respectively.

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47

Chen, Chi-Min, and 陳麒閔. "Effect of End-group Modification of Poly(3-hexylthiophene) on Solar Cell Performance and Molecular Design of High Mobility Low Band Gap Polymers for Thin Film Transistor Application." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/74734419474763771366.

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博士<br>國立清華大學<br>化學工程學系<br>103<br>The study mainly explore the effect of modified poly(3-hexylthiophene) (P3HT) by end-capping with electron-deficient moieties (EDM) on thin film transistor (TFT) and polymer solar cell (PSC) performance. On the other hand, it demonstrates to design a series of high hole mobility and excellent thermal stability thienoisoindigo (TIG)-based D-A copolymers for TFT application. This research can be divided into three parts. Firstly, for end-group modification of P3HT, all P3HTs were controlled with high regioregularity and appropriate weight-average molecular weight

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48

Yang, Neng-Jye, and 楊能傑. "Studies on polymer thin film transistor." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/73628553819444921085.

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49

Paruzel, Bartosz. "Optimalizace vícevrstvých struktur pro organickou elektroniku." Doctoral thesis, 2019. http://www.nusl.cz/ntk/nusl-405997.

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Organic electronic devices such as organic field effect transistors (OFETs), light- emitting diodes (OLEDs), resistive memory elements or organic solar cells have attracted an increasing attention in recent years due to the vision of a low-cost and large-scale production of printable electronics. Many papers published during the last decade focused on the intrinsic properties of organic conductors, semiconductors and dielectric materials. Since most of the devices consist of multilayer structures the mutual influence of the processes that take place in the particular layers are important for t

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50

Liu, Chien-Cheng, and 劉建成. "Performance improvement of conjugated polymer thin-film transistors." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/26125978517330249126.

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