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http://dx.doi.org/10.17702/jai.2022.23.4.116

Cost-Effective Soft Lithography of Organic Semiconductors in OFETs with Compact Discs as Master Molds  

Sejin Park (Department of Polymer Science & Engineering, Korea National University of Transportation)
Hyukjin Kim (Department of Chemical and Biological Engineering, Korea National University of Transportation)
Tae Kyu An (Department of Polymer Science & Engineering, Korea National University of Transportation)
Publication Information
Journal of Adhesion and Interface / v.23, no.4, 2022 , pp. 116-121 More about this Journal
Abstract
OFET have require fine patterning technology for organic semiconductor solution process to be used in actual electronics. In this study, we compared and analyzed the soft lithography method which can form fine patterns more than the conventional spin coating method in order to confirm that it can have better electrical characteristics. The soft lithography method produced a flexible master mold using nano patterns on compact disc surfaces and obtained a 650 nm wide 2,7-Dioctyl [1] benzothieno [3,2-b] [1] benzo thiophene (C8-BTBT) nanowires. As a result, the field-effect mobility of devices fabricated by the spin coating method was 0.0036 cm2/Vs and mobility of devices produced by soft lithography method was 0.086 cm2/Vs, which was about 20 times higher than spin-coated devices and has better electrical performance.
Keywords
Organic field-effect transistors; Soft lithography; Patterning; Nanowire; $C_{8-}$BTBT;
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Times Cited By KSCI : 7  (Citation Analysis)
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