Morphology-Dependent Carrier and Exciton Generations in Regioregular Poly(3-hexylthiophene) Polymer Diodes as Revealed by Bleaching Spectroscopy

被引：23

作者：

Kanemoto, Katsuichi ^{[1
,2
]}

Yasui, Motoaki ^{[1
,2
]}

Kosumi, Daisuke ^{[1
,2
]}

Ogata, Akihiko ^{[1
,2
]}

Sugisaki, Mitsuru ^{[1
,2
]}

Karasawa, Tsutomu ^{[1
,2
]}

Akai, Ichiro ^{[3
]}

Hashimoto, Hideki ^{[1
,2
]}

机构：

[1] Osaka City Univ, CREST, JST, Sumiyoshi Ku, Osaka 5588585, Japan

[2] Osaka City Univ, Dept Phys, Sumiyoshi Ku, Osaka 5588585, Japan

[3] Kumamoto Univ, Shock Wave & Condensed Matter Res Ctr, Kumamoto 8608585, Japan

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 18期

关键词：

CONJUGATED POLYMERS; SOLID-STATE; POLY(3-ALKYLTHIOPHENES); TRANSPORT; DYNAMICS; FILMS;

D O I：

10.1103/PhysRevLett.103.187402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Bleaching probe spectroscopy performed for regioregular poly(3-hexylthiophene) diodes reveals that coexistent morphological phases determine the conducting and optical properties of conjugated polymer films. Photoinduced absorption measurements demonstrate that exciton migration occurs from lamella aggregates to morphological sites consisting of quasiuncoupled chains and that the latter sites determine steady-state photophysical properties. Spectroscopy synchronized with diode operation reveals that the morphological locations of injected carriers in polymer diodes vary with the applied bias.

引用

页数：4

共 30 条

[1] Optical spectroscopy of field-induced charge in self-organized high mobility poly(3-hexylthiophene) [J].