Determination of electron mobility in a blue-emitting alternating block copolymer by space-charge-limited current measurements

被引：18

作者：

Ma, D

Hümmelgen, IA

Hu, B

Karasz, FE

Jing, X

Wang, L

Wang, F

机构：

[1] Univ Fed Parana, Dept Fis, BR-81531990 Curitiba, Parana, Brazil

[2] Univ Massachusetts, Dept Polymer Sci & Engn, Amherst, MA 01003 USA

[3] Chinese Acad Sci, Changchun Inst Appl Chem, Changchun 130022, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 1999年 / 112卷 / 05期

基金：

中国国家自然科学基金;

关键词：

polymers; elastomers; and plastics; semiconductors; thin films; electronic transport; phase transitions; thermal expansion;

D O I：

10.1016/S0038-1098(99)00351-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this communication we analyse current versus voltage data obtained using one carrier injection at metal/polymer/metal structures, The used polymer is a soluble blue-emitting alternating block copolymer, Our experimental results demonstrate that the electron current is limited by a large amount of traps with exponential energy distribution in the copolymer. The electron ;mobility of 5.1 x 10(-10) cm(2)/V s is directly determined by space-charge-limited current measurements. The electron mobility is at least three orders of magnitude smaller than that for holes in the copolymer. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：251 / 254

页数：4