Electronic properties and field-effect transistors of thiophene-based donor-acceptor conjugated copolymers

被引：72
|
作者：
Champion, RD
Cheng, KF
Pai, CL
Chen, WC [1 ]
Jenekhe, SA
机构：
[1] Natl Taiwan Univ, Inst Polymer Sci & Engn, Taipei 106, Taiwan
[2] Univ Washington, Dept Chem Engn, Seattle, WA 98195 USA
[3] Univ Washington, Dept Chem, Seattle, WA 98195 USA
[4] Natl Taiwan Univ, Dept Chem Engn, Taipei 106, Taiwan
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2005年 / 26卷 / 23期
关键词：
conjugated polymers; computer modeling; density functional theory; donor-acceptor copolymers; field-effect transistors; polythiophene; polyquinoxaline;
D O I：
10.1002/marc.200500616
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The thiophene-quinoxaline donor-acceptor conjugated copolymer poly [(thiophene-2,5-diyl-alt- (2,3-diheptylquinoxaline-5.8-diyl)] (PTHQx) was explored as a semiconductor in thin-film organic field-effect transistors (OFETs). A hole mobility of 3.6 x 10(-3) cm(2) center dot V-1 center dot s(-1) and an on/off current ratio of 6 x 10(5) were observed in p-channel OFETs made from spin-coated PTHQx thin films. The electronic structures of PTHQx and a related thiophene-thienopyrazine donor-acceptor copolymer were calculated by density functional theory. Atomic force microscopy of PTHQx thin films showed a polycrystalline grain morphology that varied with the substrate.
引用
收藏
页码：1835 / 1840
页数：6
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