| A new perspective on optoelectric conversion in conjugated polymers |
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| 作者姓名： | 刘文 张明华 李海宏 王永娟 刘德胜 |
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| 作者单位： | Physics and Information Engineering Department,Jining University School of Physics,Shandong University |
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| 基金项目： | 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). |
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| 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.
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| 关 键 词： | polaron soliton optoelectric conversion |
| 收稿时间： | 6/6/2010 12:00:00 AM |
A new perspective on optoelectric conversion in conjugated polymers |
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| Liu Wen,Zhang Ming-Hu,Li Hai-Hong,Wang Yong-Juan and Liu De-Sheng.A new perspective on optoelectric conversion in conjugated polymers[J].Chinese Physics B,2011,20(3):37102-037102. |
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| Authors: | Liu Wen Zhang Ming-Hu Li Hai-Hong Wang Yong-Juan and Liu De-Sheng |
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| Affiliation: | Physics and Information Engineering Department, Jining University, Qufu 273155, China;Physics and Information Engineering Department, Jining University, Qufu 273155, China;Physics and Information Engineering Department, Jining University, Qufu 273155, China;Physics and Information Engineering Department, Jining University, Qufu 273155, China;Physics and Information Engineering Department, Jining University, Qufu 273155, China;School of Physics, Shandong University, Jinan 250100, China |
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| 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. |
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| Keywords: | polaron soliton optoelectric conversion |
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