EXCITON DYNAMICS IN PENTACENE THIN-FILMS STUDIED BY PUMP-PROBE SPECTROSCOPY

被引：170

作者：

JUNDT, C ^{[1
]}

KLEIN, G ^{[1
]}

SIPP, B ^{[1
]}

LEMOIGNE, J ^{[1
]}

JOUCLA, M ^{[1
]}

VILLAEYS, AA ^{[1
]}

机构：

[1] INST PHYS & CHIM MAT STRASBOURG,MAT ORGAN GRP,F-67037 STRASBOURG,FRANCE

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 241卷 / 1-2期

关键词：

D O I：

10.1016/0009-2614(95)00603-2

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：

Pentacene microcrystalline thin films have been investigated by pump-probe spectroscopy in the femtosecond regime. The competition between induced absorption in the singlet S-1 --> S-n and triplet T-1 --> T-n, excited electronic configurations and bleaching of the S-0 --> S-1 transition has been observed. A theoretical description is proposed to explain the experimental results. The importance of the different contributions associated with the various competing processes are stressed. A very fast triplet exciton creation with rate constant 1.3 X 10(13) s(-1) is attributed to a fission process from one S-1 exciton to a pair of lowest triplet T-1 excitons.

引用

页码：84 / 88

页数：5

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