Effects of film order on the optical properties of α-sexithiophene

被引：19

作者：

Lane, PA

Liess, M

Wei, X

Partee, J

Shinar, J

Frank, AJ

Vardeny, ZV

机构：

[1] Univ Sheffield, Dept Phys, Sheffield S3 7RH, S Yorkshire, England

[2] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA

[3] Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[4] Iowa State Univ, Dept Phys, Ames, IA 50011 USA

[5] Iowa State Univ, Ames Lab, Ames, IA 50011 USA

[6] Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

CHEMICAL PHYSICS | 1998年 / 227卷 / 1-2期

关键词：

D O I：

10.1016/S0301-0104(97)00303-0

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：

The optical properties of ordered and disordered alpha-sexithiophene (alpha-6T) thin films are investigated by a variety of spectroscopies. The dominant low-lying even and odd parity excitons are identified by absorption and electroabsorption spectroscopies. Intermolecular interactions in ordered alpha-6T films results in Davydov splitting of the absorption band of the lowest odd parity exciton. Charged excitations in alpha-6T films were studied by photoinduced absorption and optically detected magnetic resonance. Both polarons and bipolarons are observed in disordered samples. As a consequence of higher carrier mobilities, only bipolarons were observed in ordered samples. Spin pairing of excitations broadens the observed ODMR spectra. (C) 1998 Elsevier Science B.V.

引用

页码：57 / 64

页数：8

共 27 条

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