期刊
POLYMER JOURNAL
卷 41, 期 6, 页码 459-469出版社
NATURE PUBLISHING GROUP
DOI: 10.1295/polymj.PJ2008324
关键词
Organic Semiconductor; Liquid Crystal; Liquid-Crystalline Semiconductor; Smectic Phase; Columnar Phase; Time-of-Flight Technique; Field-Effect Transistor
资金
- Sumitomo foundation
- Association of Progress of New Chemistry
- Ministry of Education and Culture [19550183]
- NEDO's Industrial Technology Research Grant
Carrier transport in liquid-crystal phases, design of liquid-crystalline semiconductors with high carrier mobilities, and their application to field-effect transistors are reviewed. High carrier mobility has been observed in the smectic phases of oligothiophene derivatives as well as in the columnar phases of triphenylene and hexabenzocoronene derivatives. The mobility increases with the molecular ordering in the mesophases and extension of the pi-conjugated system of the liquid-crystal molecules. Asymmetrically Substituted liquid-crystalline oligothiophene derivatives retain the highly ordered smectic phases below room temperature. The liquid crystals are solution-processable and can be used in high-performance field-effect transistors. The transistors exhibit high hole mobility and on/off ratio of 4 x 10(-2) cm(2) V-1 s(-1) and 10(7), respectively.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据