Reverse polarization in conjugated heterocycle polythiophene

• 来源期刊: 中国物理（英文版）
• 关键词: reverse polarization self-trapping exciton heterocycle polymer
• 年，卷（期）: 2005,（1）
• 页码范围: 186-191
• 页数: 6页
• 语种: 英文

摘要

Reverse polarization in polythiophene under an applied electric field has been studied in the framework of the tightbinding model. It is found that the applied electronic field has a great influence on the excited states of polythiophene.The effect of the heteroatoms on the polarization has been calculated and analysed carefully. It is indicated that a reverse polarization of biexcitons in polythiophene will be observed more easily. The heteroatoms increase this reversed polarization strength apparently.