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Organic thin film transistors using 6,13-bis(tri-isopropylsilylethynyl)pentacene embedded into polymer binders

Authors
Kwon, Jae-HongShin, Sang-IlKim, Kyung-HwanCho, Min JuKim, Kyu NamChoi, Dong HoonJu, Byeong-Kwon
Issue Date
5-1월-2009
Publisher
AMER INST PHYSICS
Keywords
carrier mobility; charge exchange; dielectric thin films; organic semiconductors; solubility; thin film transistors
Citation
APPLIED PHYSICS LETTERS, v.94, no.1
Indexed
SCIE
SCOPUS
Journal Title
APPLIED PHYSICS LETTERS
Volume
94
Number
1
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/120768
DOI
10.1063/1.3063123
ISSN
0003-6951
Abstract
The active channel material of an organic thin film transistor (OTFT), 6,13-bis(tri-isopropylsilylethynyl)pentacene (TIPS pentacene), is a functionalized pentacene designed to enhance both the solubility and solid-state packing of the pentacene. In this work, in order to improve device performance, three types of polymer binders-poly(alpha-methylstyrene) (PAMS), poly(4-vinylbiphenyl) (PVBP), and poly(triarylamine) (PTAA)-were employed to fabricate OTFT devices with organic soluble TIPS pentacene. These binders improved film formation in a large area uniformly and helped the TIPS pentacene to form a stronger binding between source/drain electrodes onto dielectric layer. Thus, device performance was highly improved due to improvement of interfacial contact and an increase in the charge transfer in the active channel. OTFTs using TIPS pentacene with PAMS, PVBP, and PTAA for field effect mobilities in the saturation regime have 5x10(-3), 8x10(-3), and 2.7x10(-2) cm(2)/V s, respectively.
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공과대학 (전기전자공학부)
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