Organic Thin Film Transistors with Substituted Polyacetylenes Containing a Hetero Atom

Tetsuya Imamura; Yasuteru Mawatari; Hisashi Fukuda; Masayoshi Tabata

doi:10.1380/ejssnt.2009.767

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Organic Thin Film Transistors with Substituted Polyacetylenes Containing a Hetero Atom

Tetsuya Imamura, Yasuteru Mawatari, Hisashi Fukuda, Masayoshi Tabata

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Keywords: Electrical transport measurement, Metal-semiconductor interfaces, Transistor, Organic thin film, Substituted polyacetylene, Rhodium complex catalyst

JOURNAL FREE ACCESS

2009 Volume 7 Pages 767-771

DOI https://doi.org/10.1380/ejssnt.2009.767

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Abstract

Organic thin film transistors (OTFTs) using substituted polyacetylenes which have a helical form were fabricated. Substituted polyacetylenes soluble to various organic solvents were obtained using a rhodium complex as the stereoregular polymerization catalyst of the substituted acetylenes. The polymer thin films were formed by spin coating method. Poly(2-ethynylthiophene) and poly(3-ethynylthiophene) bearing a thiophene ring as the side-chain is operated at p-type semiconductor and the maximum field-effect mobility of the P2ET and P3ET OTFT is estimated at 4.3×10^-3 and 6.7×10^-3cm²/Vs respectively. [DOI: 10.1380/ejssnt.2009.767]

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