Self-trapped exciton dynamics in highly ordered and disordered films of polythiophene derivative

被引：22

作者：

Kobayashi, T

Hamazaki, J

Arakawa, M

Kunugita, H

Ema, K

Ochiai, K

Rikukawa, M

Sanui, K

机构：

[1] Sophia Univ, Dept Phys, Chiyoda Ku, Tokyo 1028554, Japan

[2] Japan Sci & Technol Corp, CREST, Kawaguchi, Saitama 3320012, Japan

[3] Sophia Univ, Dept Chem, Chiyoda Ku, Tokyo 1028554, Japan

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.62.8580

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We measured the time-resolved photoluminescence of highly ordered and disordered films of a polythiophene derivative, poly(3-[2-((S)-2-methylbutoxy)ethyl]thiophene). The formation of self-trapped excitons (STE's) within 10 ps after photoexcitation and the subsequent migration of the STE's are common behavior in both films. The spectral narrowing of the phonon sidebands within 10 ps after photoexcitation is associated with the formation process of STE's and the spectral changes on a few hundred ps time scale are explained by the STE migration and the dependence of the electron-phonon coupling on the effective conjugation length.

引用

页码：8580 / 8583

页数：4

共 22 条

[1]

Baeriswyl D., 1992, CONJUGATED CONDUCTIN

[2] TIME-RESOLVED EXCITONIC LUMINESCENCE PROCESSES IN POLY(PHENYLENEVINYLENE) [J].