Home >

news Help

Publication Information


Title
Japanese:液晶相を利用した多結晶薄膜の作製と有機TFTへの応用 
English:Fabrication of polycrystalline thin film via liquid crystalline phase and its application to organic TFT 
Author
Japanese: 飯野裕明, 半那純一.  
English: Hiroaki Iino, Jun-ichi Hanna.  
Language Japanese 
Journal/Book name
Japanese:2007年日本液晶学会討論会 講演予稿集 
English:Abstracts of The Japanese Liquid Crystal Society Annual Meetings 2006 
Volume, Number, Page         pp. 2pA08
Published date Sept. 2007 
Publisher
Japanese:日本液晶学会 
English:Japanese Liquid Crystal Society 
Conference name
Japanese:2007年日本液晶学会討論会 
English: 
Conference site
Japanese:東京工業大学、東京 
English:Tokyo Institute of Technology, Tokyo 
Abstract We have fabricated field effect transistors (FET) with polycrystalline thin films of a liquid crystalline quarterthiophene derivative, ω,ω’-dihexylquaterthiophene (6-QTP-6) prepared by spin-coating at liquid crystalline temperature of 100 oC, and characterized their TFT performance. The resulting polycrystalline thin films exhibited good uniformity, in which the molecules were aligned vertically on substrates. The FETs exhibited p-channel behavior, and their mobility and current On/Off ratio were 5×10-2 cm2/Vs and 108, respectively. The FET mobility was the same as that measured by TOF experiments, indicating that the carrier transport of the planar direction in the thin film was hardly affected by grain boundaries. We conclude the polycrystalline thin films of liquid crystals are good candidate for organic TFT materials.

©2007 Tokyo Institute of Technology All rights reserved.