Polaron dynamics in a system of coupled conjugated polymer chains
Polaron dynamics in a system of coupled conjugated polymer chains
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DOI：
10.1103/physrevlett.86.3602
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发表时间：
2001-04-16
影响因子：
8.6
通讯作者：
Stafström, S
中科院分区：
文献类型：
--
作者：
Johansson, Å;Stafström, S
激发如极化子的运动被认为对于用于例如，基于聚合物的LED。研究了外加电场作用下耦合高分子链系统中极化子的动力学。特别地，我们专注于极化子如何通过聚合物晶格迁移，即，极化子到达链末端并被散射到周围链的情况。我们表明，这一事件的结果强烈依赖于电场的强度，我们确定了三种不同的情况下的极化子迁移。
The motion of excitations such as polarons is believed to be of fundamental importance for the transport properties of conjugated polymers for the use in, e.g., polymer based LED's. We have investigated polaron dynamics in a system of coupled polymer chains in the presence of an external electric field. In particular, we focus on how a polaron migrates through the polymer lattice, i.e., the situation in which a polaron reaches a chain end and is scattered to the surrounding chains. We show that the outcome of this event strongly depends on the strength of the electric field, and we identify three different cases for the polaron migration.