Dynamics of photogenerated charge carrier and morphology dependence in polythiophene films studied by in situ. time-resolved microwave conductivity and transient absorption spectroscopy

被引：34

作者：

Saeki, Akinori ^{[1
]}

Seki, Shu ^{[1
]}

Koizumi, Yoshiko ^{[1
]}

Tagawa, Seiichi ^{[1
]}

机构：

[1] Osaka Univ, Inst Sci & Ind Res, Ibaraki, Osaka 5670047, Japan

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2007年 / 186卷 / 2-3期

关键词：

microwave; photoconductivity; charge carriers; polythiophene; film morphology;

D O I：

10.1016/j.jphotochem.2006.08.008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

For the investigation of photoconductivity and charge carrier dynamics in regioregular poly(3-hexylthiophene) (RR-P3HT), an in situ flash-photolysis time-resolved microwave conductivity (FP-TRMC) and transient absorption spectroscopy (TAS) was performed using 6.4 and 3.5 eV photon excitation. Since the former energy is sufficiently higher than ionization potential of RR-P3HT, a direct ionization and consequent bulk charge recombination was observed. The dynamics of charge carriers of transient conductivity and photoabsorption kinetics are discussed in terms of the X-ray diffraction pattern and film morphology of RR-P3HT observed by tapping mode atomic force microscope. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：158 / 165

页数：8

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