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High-mobility and air-stable organic thin-film transistors with highly ordered semiconducting polymer films

Authors :
Daisuke Kumaki
Shizuo Tokito
Tokiyoshi Umeda
Source :
Journal of Applied Physics. 101:054517
Publication Year :
2007
Publisher :
AIP Publishing, 2007.

Abstract

We report on high crystalline thin films of liquid-crystalline polythiophene derivative, poly(2,5-bis(3-hexadecylthiophene-2-yl)thieno[3,2-b]thiophene) (PB16TTT) that exhibit terrace structures and molecular steps of its polymer chains by annealing in its liquid-crystalline phase. The crystallinity of the PB16TTT polymer films formed on SiO2 gate insulating layers with smooth self-assembled monolayer was improved by changing the octyltrichlorosilane treatment time for the SiO2, which led to reproducible high field-effect mobilities of the polymer thin-film transistors up to 0.44cm2∕Vs. High stability of the transistor for repeated stressing in ambient air was also demonstrated.

Details

ISSN :
10897550 and 00218979
Volume :
101
Database :
OpenAIRE
Journal :
Journal of Applied Physics
Accession number :
edsair.doi...........a47914d3ccc26bb81acf4c945271bc89
Full Text :
https://doi.org/10.1063/1.2711780