Excited States in P3HT and P3HT/PCBM Blends

被引：0
|
作者：
Mueller, K. [1 ]
Richter, M. [1 ]
Philip, S. [1 ]
Kunst, M. [2 ]
Schmeisser, D. [1 ]
机构：
[1] Brandenburg Tech Univ Cottbus, Angew Phys Sensor, D-03046 Cottbus, Germany
[2] Inst Solare Brennstoffe E I6, Helmholtz Zentrum Berlin, D-14109 Berlin, Germany
来源：
BIONANOSCIENCE | 2012年 / 2卷 / 01期
关键词：
P3HT; Excitons; Polarons; Exciton dissociation; TRMC; UPS; XAS;
D O I：
10.1007/s12668-011-0031-4
中图分类号：
TB3 [工程材料学]; R318.08 [生物材料学];
学科分类号：
0805 ; 080501 ; 080502 ;
摘要：
The electronic structure and the charge carrier dynamics of regioregular poly(3-hexylthiophen-2,5-diyl) and blends with phenyl-C61-butyric acid methyl ester are studied using time resolved microwave conductivity, optical spectroscopy, ultraviolet photoelectron spectroscopy and high resolution X-ray absorption spectroscopy. From our data, we deduce the positions of the valence and conduction band, the existence of two excitons-as well as the coexistence of one-and two-dimensional polarons. Consistent with the spectroscopic data, we propose a new model in which scattering of virtual polarons and excitons can create free polaronic charge carriers.
引用
收藏
页码：42 / 51
页数：10
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