| 链间耦合对聚合物中双激子态反向极化的影响 |
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| 引用本文： | 高琨,付吉永,刘德胜,解士杰.链间耦合对聚合物中双激子态反向极化的影响[J].物理学报,2005,54(2):665-668. |
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| 作者姓名： | 高琨 付吉永 刘德胜 解士杰 |
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| 作者单位： | 山东大学物理与微电子学院晶体材料国家重点实验室,济南 250100 |
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| 基金项目： | 国家自然科学基金（批准号：90103034，10074040）资助的课题. |
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| 摘 要： | 从紧束缚模型出发，研究了链间相互作用对双激子态反向极化的影响.结果发现：加链间耦合后，双激子态仍主要局域在一条链中.当简并破缺较小时，反向极化程度随耦合强度的增加大幅提高；当简并破缺较大时，反向极化程度随耦合强度的增加基本不变.
关键词：
反向极化
双激子态
链间耦合
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| 关 键 词： | 反向极化 双激子态 链间耦合 |
| 收稿时间： | 6/8/2004 12:00:00 AM |
Effect of interchain coupling on the inversed polarization of a biexciton in conjugated polymers |
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| Gao Kun,Fu Ji-Yong,Liu De-Sheng,Xie Shi-Jie.Effect of interchain coupling on the inversed polarization of a biexciton in conjugated polymers[J].Acta Physica Sinica,2005,54(2):665-668. |
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| Authors: | Gao Kun Fu Ji-Yong Liu De-Sheng Xie Shi-Jie |
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| Abstract: | Effect of interchain coupling on the inversed polarization of a biexciton has be en studied in the framework of a tight-binding approximation. It was found that a biexciton state is mainly confined in one chain even the interchain coupling is included. The inversed polarization will be enhanced remarkably with the inte rchain coupling in the case of a weak non-degenerate confinement. However, the inversed polarization will keep nearly unchanged for a strong non-degenerate co nfinement. |
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| Keywords: | inversed polarization biexciton state interchain coupling |
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