| 共轭聚合物中链间无序效应对极化子动力学性质的影响 |
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| 引用本文： | 袁晓娟,刘德胜.共轭聚合物中链间无序效应对极化子动力学性质的影响[J].济宁师范专科学校学报,2011(6):9-13,16. |
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| 作者姓名： | 袁晓娟 刘德胜 |
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| 作者单位： | [1]山东大学物理学院,晶体材料国家重点实验室,山东济南250100 [2]济宁学院物理与信息工程系,山东曲阜273155 |
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| 基金项目： | 国家自然科学基金资助项目（11074146）;科技部重大科学研究计划（973）项目（2009CB929204） |
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| 摘 要： | 采用非绝热动力学方法，研究了两条随机耦合的聚合物链中的极化予动力学．研究发现，极化子的动力学性质由电场和无序的链间相互作用共同竞争的结果所决定．极化子动力学被划分为两类，弱耦合动力学和强耦合动力学．在弱耦合动力学中，链间耦合强度是影响极化子输运的主导因素，而在强耦合动力学中，链问无序效应占主导作用．链间耦合越强，载流子的迁移率越高；链间无序效应并不总是阻碍电荷的输运，在一定的电场和耦合强度下，反而有利于电荷的输运．
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| 关 键 词： | 极化子动力学 链间相互作用 无序效应 电荷输运 |
Effects of Interchain Coupling Disorder on Polaron Dynamics in Conjugated Polymers |
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| YUAN Xiaojuan,LIU Desheng.Effects of Interchain Coupling Disorder on Polaron Dynamics in Conjugated Polymers[J].Journal of Jining Teachers College,2011(6):9-13,16. |
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| Authors: | YUAN Xiaojuan LIU Desheng |
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| Institution: | 1,2 ( 1. School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China; 2. Department of Physics and Information Engineering, Jining University, Qufu 273155, China) |
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| Abstract: | Using a nonadiabatic evolution method, we simulate the polaron dynamics in two randomly coupled polymer chains. It is found that polaron dynamics is determined by the competition between the electric field and the disordered interchain interactions. Polaron dynamics are classified into two types, weak -coupling dynamics and strong - coupling dynamics. We find that the strength of interchain coupling is dominant in weak - coupling dynamics, whereas the interchain coupling disorder is dominant in strong -coupling dynamics. The charge carriers tend to have higher mobility for stronger interchain coupling, and interchain coupling dis.order can enhance charge transport depending on the coupling strength and the electric field. |
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| Keywords: | polaron dynamics interchain interactions disorder charge transport |
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