New liquid crystalline solution processable organic semiconductors and their performance in field effect transistors

被引：5

作者：

Shkunov, M ^{[1
]}

Zhang, WM ^{[1
]}

Graham, D ^{[1
]}

Sparrowe, D ^{[1
]}

Heeney, M ^{[1
]}

Giles, M ^{[1
]}

Tierney, S ^{[1
]}

Bailey, C ^{[1
]}

McCulloch, I ^{[1
]}

Kreouzis, T ^{[1
]}

机构：

[1] Merck Chem NB C UK, Southampton SO16 7QD, Hants, England

来源：

ORGANIC FIELD EFFECT TRANSISTORS II | 2003年 / 5217卷

关键词：

organic field-effect transistors; small conjugated molecules; organic semiconductors; reactive mesogens; thermotropic liquid crystals; photopolymerisation; time-of-flight technique;

D O I：

10.1117/12.505831

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

New polymerisable liquid crystalline organic semiconductors based on small molecule "reactive mesogens" are reported. These molecules, comprising pi-conjugated cores with reactive endgroups, were designed, synthesised then solution processed into thin films. The mesogenic morphology was attained thermally and fixed through a post fabrication photopolymerisation reaction. Thermal, optical and electrical properties of these thin films were characterised to reveal details of morphology and molecular orientation. Both bulk (time-of-flight) and surface (field-effect) charge carrier mobilities were measured. The relationship between molecular structure, corresponding macrostructure processability and charge mobility is discussed. Fabrication and characterisation of field-effect transistors based on reactive mesogens are presented and discussed.

引用

页码：181 / 192

页数：12

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