Controlling the field-effect mobility of regioregular polythiophene by changing the molecular weight

被引：889
作者：
Kline, RJ
McGehee, MD [1 ]
Kadnikova, EN
Liu, JS
Fréchet, JMJ
机构：
[1] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA
[2] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Sci Mat, Berkeley, CA 94720 USA
来源：
ADVANCED MATERIALS | 2003年 / 15卷 / 18期
关键词：
D O I：
10.1002/adma.200305275
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A clear dependence of the hole mobility on molecular weight of poly(3-hexylthiophene) in films is demonstrated. The charge carrier mobility of regioregular polythiophene is shown to increase by four orders of magnitude as the molecular weight is increased from similar to3 200 g mol(-1) to 36 000 g mol-1. These observations could explain why the mobility values obtained in different labs vary so widely and suggest that optimizing the molecular weight of conjugated polymers could lead to significant improvements in device performance.
引用
收藏
页码：1519 / +
页数：5
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