Enhancement of bipolar carrier transport in oligofluorene films through alignment in the liquid-crystalline phase

被引：20

作者：

Chen, LY

Hung, WY

Lin, YT

Wu, CC ^{[1
]}

Chao, TC

Hung, TH

Wong, KT

机构：

[1] Natl Taiwan Univ, Dept Elect Engn, Grad Inst Electroopt Engn, Taipei 106, Taiwan

[2] Natl Taiwan Univ, Grad Inst Elect Engn, Taipei 106, Taiwan

[3] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 11期

关键词：

D O I：

10.1063/1.2042536

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigate the formation of aligned liquid-crystal glasses of an oligofluorene and perform comparative studies of carrier-transport properties of the oligofluorene in both amorphous films and glassy liquid-crystal films. With mesophase-mediated molecular alignment, the bipolar carrier-transport capability of oligofluorene solid films is enhanced by more than an order of magnitude. High bipolar carrier mobilities, up to 2.0x10(-2) cm(2)/V s for holes and up to 2.3x10(-2) cm(2)/V s for electrons, are observed in the aligned glassy liquid-crystal films. (c) 2005 American Institute of Physics.

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