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Charge transport enhancement via air-mediated self-organization in polymer semiconductors

Published online by Cambridge University Press:  21 March 2012

Takashi Kushida ,
Takashi Nagase  and
Hiroyoshi Naito
Takashi Kushida
Affiliation:
Integrative Technology Research Institute, Teijin Limited, Hino, Tokyo 191-8512, Japan
Takashi Nagase
Affiliation:
Department of Physics and Electronics, Osaka Prefecture University, Sakai 599-8531, Japan The Research Institute for Molecular Electronics Devices, Osaka Prefecture University, Sakai 599-8531, Japan
Hiroyoshi Naito
Affiliation:
Department of Physics and Electronics, Osaka Prefecture University, Sakai 599-8531, Japan The Research Institute for Molecular Electronics Devices, Osaka Prefecture University, Sakai 599-8531, Japan
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Abstract

Air-mediated molecular ordering in self-organized polymer semiconductors of regioregular poly(3-hexylthiophene) (P3HT) and poly[(9,9′-dioctylfluorenyl-2,7-diyl)-(2,2′-bithiophene-5,5′-diyl)] (F8T2) was investigated using organic field-effect transistors (OFETs) fabricated by transfer-printing using poly(dimethylsiloxane) stamps with various surface energies. OFET measurements revealed that the charge transport in the polymer semiconductors via the air interface layer was better than that via the substrate interface layer. The results indicated that the formation of a highly ordered microstructure at the polymer/air interface through air-mediated self-organization occurs in many polymer semiconductors. This air-mediated self-organization was weaker than substrate-mediated self-organization, whose influence appeared in OFETs with thin semiconductor films.

Keywords

electrical propertiespolymersemiconducting
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1360: Symposium OO – Synthesis and Processing of Organic and Polymeric Materials for Semiconductor Applications , 2011 , mrss11-1360-oo10-12
Copyright
Copyright © Materials Research Society 2012

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