Reverse polarization in conjugated heterocycle polythiophene
Wang Lu-Xia (王鹿霞)ab, Liu De-Sheng (刘德胜)abc, Zhang Da-Cheng (张大成)a, Xie Shi-Jie (解士杰)ac, Han Sheng-Hao (韩圣浩)ac, Mei Liang-Mo (梅良模)ac
a School of Physics and Microelectronics, Shandong University, Jinan 250100, China; b Department of Physics, Jining Normal University, Jining 272025, China; c State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
Abstract Reverse polarization in polythiophene under an applied electric field has been studied in the framework of the tight-binding 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.
Received: 10 June 2004
Revised: 29 July 2004
Accepted manuscript online:
Fund: Project supported by the National Natural Science Key Foundations of China (Grant Nos 10474056 and
50323006) and Shandong Provincial Natural Science Foundation of China (Grant No Y2001A05)
Cite this article:
Wang Lu-Xia (王鹿霞), Liu De-Sheng (刘德胜), Zhang Da-Cheng (张大成), Xie Shi-Jie (解士杰), Han Sheng-Hao (韩圣浩), Mei Liang-Mo (梅良模) Reverse polarization in conjugated heterocycle polythiophene 2005 Chinese Physics 14 186
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