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

Jae Hong Kwon, Sang Il Shin, Kyung Hwan Kim, Min Ju Cho, Kyu Nam Kim, Dong Hoon Choi, Byeong Kwon Ju

Research output: Contribution to journalArticle

42 Citations (Scopus)

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(α -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 5× 10-3, 8× 10-3, and 2.7× 10-2 cm2 /V s, respectively.

Original languageEnglish
Article number013506
JournalApplied Physics Letters
Volume94
Issue number1
DOIs
Publication statusPublished - 2009 Jan 19

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transistors
polymers
thin films
solubility
charge transfer
solid state
saturation
electrodes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Organic thin film transistors using 6,13-bis(tri-isopropylsilylethynyl) pentacene embedded into polymer binders. / Kwon, Jae Hong; Shin, Sang Il; Kim, Kyung Hwan; Cho, Min Ju; Kim, Kyu Nam; Choi, Dong Hoon; Ju, Byeong Kwon.

In: Applied Physics Letters, Vol. 94, No. 1, 013506, 19.01.2009.

Research output: Contribution to journalArticle

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