A new perspective on optoelectric conversion in conjugated polymers

doi:10.1088/1674-1056/20/3/037102

中国物理B ›› 2011, Vol. 20 ›› Issue (3): 37102-037102.doi: 10.1088/1674-1056/20/3/037102

A new perspective on optoelectric conversion in conjugated polymers

刘文¹, 张明华¹, 李海宏¹, 王永娟¹, 刘德胜²

(1)Physics and Information Engineering Department, Jining University, Qufu 273155, China; (2)Physics and Information Engineering Department, Jining University, Qufu 273155, China;School of Physics, Shandong University, Jinan 250100, China

收稿日期:2010-06-06 修回日期:2010-11-07 出版日期:2011-03-15 发布日期:2011-03-15
基金资助:
Project supported by the Special Funds of the National Natural Foundation of China (Grant No. 11047148), and the Jining University Research Program, China (Grant No. 2010QNKJ04).

A new perspective on optoelectric conversion in conjugated polymers

Liu Wen(刘文)^a), Zhang Ming-Hua(张明华)^a), Li Hai-Hong(李海宏)^a), Wang Yong-Juan(王永娟)^a), and Liu De-Sheng(刘德胜)^a)b)†

^a Physics and Information Engineering Department, Jining University, Qufu 273155, China; ^b School of Physics, Shandong University, Jinan 250100, China

Received:2010-06-06 Revised:2010-11-07 Online:2011-03-15 Published:2011-03-15
Supported by:
Project supported by the Special Funds of the National Natural Foundation of China (Grant No. 11047148), and the Jining University Research Program, China (Grant No. 2010QNKJ04).

摘要/Abstract

摘要： Photoexcitation of a neutral soliton will create a polaron and a charged soliton. According to a tight-binding model and a nonadiabatic method, we investigate the dynamical process of these two photogenerated charge carriers in an external electric field. It is found that the polaron and the soliton can pass through each other, which excludes the possibility of carrier recombination that usually occurs in existing organic solar cells. The results indicate a more efficient way to realize the optoelectric conversion by photoexciting polymer materials with soliton defects. On the other hand, it is found that solitons take on greater stability than polarons during collision.

关键词: polaron, soliton, optoelectric conversion

Abstract: Photoexcitation of a neutral soliton will create a polaron and a charged soliton. According to a tight-binding model and a nonadiabatic method, we investigate the dynamical process of these two photogenerated charge carriers in an external electric field. It is found that the polaron and the soliton can pass through each other, which excludes the possibility of carrier recombination that usually occurs in existing organic solar cells. The results indicate a more efficient way to realize the optoelectric conversion by photoexciting polymer materials with soliton defects. On the other hand, it is found that solitons take on greater stability than polarons during collision.

Key words: polaron, soliton, optoelectric conversion

中图分类号: (Polarons and electron-phonon interactions)

71.38.-k

71.20.Rv (Polymers and organic compounds)

刘文, 张明华, 李海宏, 王永娟, 刘德胜. A new perspective on optoelectric conversion in conjugated polymers[J]. 中国物理B, 2011, 20(3): 37102-037102.

Liu Wen(刘文), Zhang Ming-Hua(张明华), Li Hai-Hong(李海宏), Wang Yong-Juan(王永娟), and Liu De-Sheng(刘德胜). A new perspective on optoelectric conversion in conjugated polymers[J]. Chin. Phys. B, 2011, 20(3): 37102-037102.

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A new perspective on optoelectric conversion in conjugated polymers

A new perspective on optoelectric conversion in conjugated polymers

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