Improving the Performance of TIPS-pentacene Thin FilmTransistors via Interface Modification

doi:10.1007/s40242-017-7122-x

Chemical Research in Chinese Universities ›› 2018, Vol. 34 ›› Issue (1): 151-154.doi: 10.1007/s40242-017-7122-x

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Improving the Performance of TIPS-pentacene Thin FilmTransistors via Interface Modification

ZHU Xiaofei, ZHANG Xiaodong, HUANG Lizhen, WANG Zi, CHI Lifeng

Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials(FUNSOM), Soochow University, Suzhou 215123, P. R. China

Received:2017-03-31 Online:2018-02-01 Published:2018-01-20
Contact: CHI Lifeng,E-mail:chilf@suda.edu.cn;WANG Zi,E-mail:wangzi@suda.edu.cn E-mail:chilf@suda.edu.cn;wangzi@suda.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(Nos.11304213, 51503138, 21527805), and the China Postdoctoral Science Foundation(Nos.2014M550304, 2015M581856, 2015T80579).

Abstract

Abstract: Understanding the structure-performance relationship is crucial for optimizing the performance of organic thin film transistors. Here, two interface modification methods were applied to modulate the thin film morphology of the organic semiconductor, 6,13-bis(triisopropylsilylethynyl)pentacene(TIPS-pentacene). The resulting different film morphologies and packing structures led to distinct charge transport abilities. A substantial 40-fold increase in charge carrier mobility was observed on the octadecyltrichlorosilane(OTS)-modified sample compared to that of the transistor on the bare substrate. A better charge mobility greater than 1 cm²·V^-1·s^-1 is realized on the p-sexiphenyl(p-6P)- modified transistors due to the large grain size, good continuity and, importantly, the intimate π-π packing in each domain.

Key words: Organic semiconductor, Organic thin film transistor, Molecular packing

ZHU Xiaofei, ZHANG Xiaodong, HUANG Lizhen, WANG Zi, CHI Lifeng. Improving the Performance of TIPS-pentacene Thin FilmTransistors via Interface Modification[J]. Chemical Research in Chinese Universities, 2018, 34(1): 151-154.

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Improving the Performance of TIPS-pentacene Thin FilmTransistors via Interface Modification

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