Chemistry Letters
Letter
Thin Film Characteristics and FET Performances of β-Octyl-substituted Long Oligothiophenes
Kazuo TakimiyaKatsuhiro SakamotoTetsuo OtsuboYoshihito Kunugi
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Volume 35 (2006) Issue 8 Pages 942-943

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Abstract

A series of β-octyl-substituted oligothiophenes from 6-mer to 41-mer was examined for active layers of organic filed-effect transistors. Upon spin-coating from chloroform solution, the 20-mer and the longer oligomers formed homogenous thin films composed of stacked lamella structures. Top-contact devices fabricated using these films showed good p-channel FET characteristics with mobilities of 10−3 cm2 V−1 s−1 which gradually increase with the extension of chain length.

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© 2006 The Chemical Society of Japan
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