Polaron motional narrowing of electron spin resonance in organic field-effect transistors

被引：79

作者：

Matsui, Hiroyuki ^{[1
,2
]}

Hasegawa, Tatsuo ^{[1
,2
]}

Tokura, Yoshinori ^{[1
,2
]}

Hiraoka, Maki ^{[1
]}

Yamada, Toshikazu ^{[1
]}

机构：

[1] AIST, Correlated Elect Res Ctr, Tsukuba, Ibaraki 3058562, Japan

[2] Univ Tokyo, Dept Appl Phys, Tokyo 1138562, Japan

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.100.126601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Polaron states in organic thin-film transistors (TFTs) were investigated by the electron spin resonance (ESR) technique. Gate-field-dependent and temperature-dependent single-Lorentzian ESR spectra were observed for field-induced polarons in pentacene TFTs, demonstrating the effect of motional narrowing due to polaron diffusion. Analyses of the ESR linewidth revealed a considerably long trapping time (tau(C) similar to 0.7 ns), the variation of which is discussed in terms of the multiple trap-and-release model.

引用

页数：4

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