Polaron dynamics in thin polythiophene films studied with time-resolved photoemission
Polaron dynamics in thin polythiophene films studied with time-resolved photoemission
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用时间分辨光电子研究薄聚噻吩薄膜中的极化子动力学
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
P. Tegeder
中科院分区：
文献类型：
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作者：
E. Varene;P. Tegeder
采用飞秒时间分辨双光子光电子能谱研究了沉积在导电聚合物聚（3，4-乙撑二氧噻吩）：聚（苯乙烯磺酸）（PEDT：PSS）电极上的区域规整聚（3-己基噻吩）（RR-P3HT）薄膜在2.1eV光激发下的激发态动力学。我们发现，这种激发态的双指数衰减有一个快速的组件（2.6 ps）分配给绑定极化子对，重组迅速或分离，被添加到缓慢的组件（7.6 ps）。后者归因于通过相邻聚合物链之间的电荷转移产生的极化子。
Femtosecond time-resolved two-photon photoemission spectroscopy is employed to study the dynamics of an excited state in a thin regioregular poly(3-hexylthiophene) (RR-P3HT) film deposited on a conducting polymer poly(3,4-ethylene-dioxythiophene): poly-(styrenesulfonate) (PEDT:PSS) electrode following optical excitation at 2.1 eV. We found that the biexponential decay of this excited state has a fast component (2.6 ps) assigned to bound polaron pairs which recombine quickly or separate to be added to the slow component (7.6 ps). The latter is attributed to polarons generated via charge transfer between adjacent polymer chains.
影响因子：
4.4
作者：
Hagen, Sebastian;Kate, Peter;Tegeder, Petra
通讯作者：
Tegeder, Petra