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Investigation of the electronic properties of cyclopentadithiophene polymers and copolymers

Published online by Cambridge University Press:  15 February 2011

Paolo Coppo ,
Michael L. Turner ,
Domenico C. Cupertino  and
Stephen G. Yeates
Paolo Coppo
Affiliation:
Department of Chemistry, University of Sheffield, Dainton Building, Brook Hill, S3 7HF, Sheffield, UK.
Michael L. Turner
Affiliation:
Department of Chemistry, University of Sheffield, Dainton Building, Brook Hill, S3 7HF, Sheffield, UK.
Domenico C. Cupertino
Affiliation:
Avecia Research Centre, Hexagon Tower, Blackley, M9 8ZS, Manchester, UK.
Stephen G. Yeates
Affiliation:
Avecia Research Centre, Hexagon Tower, Blackley, M9 8ZS, Manchester, UK.
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Abstract

Cyclopentadithiophene based homopolymers and copolymers have been investigated as semiconductor layers in field effect transistors. They generally show low hole mobilities due to a disordered amorphous structure in the solid state. FET mobility can be enhanced in the homopolymer, although this results in poor on/off ratio of the device. The low mobilities may be attributed to the presence of solubilizing alkyl chains normal to the long axis of the polymer which prevent the self assembly of the polymer into an ordered π-stacked configuration.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 771: Symposium L – Organic and Polymeric Materials and Devices , 2003 , L4.9
Copyright
Copyright © Materials Research Society 2003

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