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Received September 11, 2021
Accepted November 3, 2021
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Reduced electrical hysteresis of organic thin-film transistors based on smallmolecule semiconductor through an insulating polymer binder
IPF - Leibniz-Institut für Polymerforschung Dresden e.V, Institute of Physical Chemistry and Polymer Physics, 01069 Dresden, Germany 1Department of Materials Science and Engineering, Gachon University, Seongnam 13120, Korea 2Department of Chemical Engineering (Integrated Engineering Program), Kyung Hee University, Yongin 17104, Korea
t2.lee77@gachon.ac.kr
Korean Journal of Chemical Engineering, March 2022, 39(3), 499-503(5), 10.1007/s11814-021-1005-z
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Abstract
The electrical stability of organic thin film transistors (OTFTs) based on 6, 13-bis(triisopropylsilylethynyl) (TIPS) pentacene were improved by blending poly(α-methylstyrene) (PαMS) binder with the TIPS-pentacene. The blended semiconducting film is vertically phase-separated, which forms a TIPS-pentacene rich region at top surface due to its lower surface energy than PαMS, inducing interface modification at semiconducting layer and dielectric layer. The modified interface induces an increase in charge current density and a decrease in charge trap density, leading to efficiently reduced electrical hysteresis and increased field-effect mobility.
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Wang S, Oh JY, Xu J, Tran H, Bao Z, Acc. Chem. Res., 5, 1033 (2018)
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Minemawari H, Yamada T, Matsui H, Tsutsumi J, Haas S, Chiba R, Kumai R, Hasegawa T, Nature, 475, 364 (2011)
Yuan Y, Giri G, Ayzner AL, Zoombelt AP, Mannsfeld SCB, Chen J, Nordlund D, Toney MF, Huang J, Bao Z, Nat. Commun., 5, 3005 (2014)
Kim DH, Lee DY, Lee HS, Lee WH, Kim YH, Han JY, Cho K, Adv. Mater., 19, 678 (2007)
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Gu G, Kane MG, Doty JE, Firester AH, Appl. Phys. Lett., 87, 243512 (2005)
Kim JY, Kim JW, Lee EK, Park JI, Lee BL, Kwon YN, Byun S, Jung MS, Kim JJ, J. Mater. Chem. C, 6, 13359 (2006)
Lee CA, Park DW, Jin SH, Park IH, Lee JD, Park BG, Appl. Phys. Lett., 88, 252102 (2006)
Qiu L, Lim JA, Wang X, Lee WH, Hwang M, Cho K, Adv. Mater., 20, 1141 (2008)
Ohe T, Kuribayashi M, Yasuda R, Tsuboi A, Nomoto K, Satori K, Itabashi M, Kasahara J, Appl. Phys. Lett., 93, 53303 (2008)
Kang J, Shin N, Jang DY, Prabhu VM, Yoon DY, J. Am. Chem. Soc., 130, 12273 (2008)
Kwon JH, Shin S, Kim S, Cho MJ, Kim KN, Choi DH, Ju B, Appl. Phys. Lett., 94, 13506 (2009)
Madec MB, Smith PJ, Malandraki A, Wang N, Korvink JG, Yeates SG, J. Mater. Chem., 20, 9155 (2010)
Qiu L, Lee WH, Whang Z, Kim JS, Lim JA, Kwak D, Lee S, Cho K, Adv. Mater., 21, 1349 (2009)
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Veres J, Ogier S, Leeming SW, Cupertino DC, Khaffaf SM, Adv. Funct. Mater., 13, 199 (2003)
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Kim CS, Jo SJ, Lee SW, Kim WJ, Lee SH, Baik HK, Adv. Funct. Mater., 17, 958 (2007)
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McDowell M, Hill IG, McDermott JE, Bernasek SL, Schwarts J, Appl. Phys. Lett., 88, 73505 (2006)
