Photocarrier generation in directly synthesized trans-polyacetylene

被引：5
|
作者：
Shibahara, S [1 ]
Nishioka, T [1 ]
Natsume, N [1 ]
Ishikawa, K [1 ]
Takezoe, H [1 ]
Fukuda, A [1 ]
机构：
[1] Tokyo Inst Technol, Dept Organ & Polymer Mat, Meguro Ku, Tokyo 152, Japan
来源：
SYNTHETIC METALS | 1998年 / 94卷 / 03期
关键词：
polyacetylene; films; photocarrier generation; energy barrier; Poole-Frenkel mechanism;
D O I：
10.1016/S0379-6779(98)00008-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The direct photocarrier generation edge of directly synthesized trans-polyacetylene was studied by means of electric field, temperature and excitation photon energy dependence of photocarrier generation efficiency. We found that the excited states have an energy barrier to generate the charged carrier at the absorption edge and the direct barrierless photocarrier generation starts at about 1.7 eV. These results strongly support the existence of the exciton state at the absorption edge in trans-polyacetylene. (C) 1998 Elsevier Science S.A. All rights reserved.
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页码：255 / 260
页数：6
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