High-performance organic transistors with high-k dielectrics: A comparative study on solution-processed single crystals and vacuum-deposited polycrystalline films of 2,9-didecyl-dinaphtho[2,3-b:2′,3′-f] thieno[3,2-b]thiophene

W. Ou-Yang, T. Uemura, K. Miyake, S. Onish, T. Kato, M. Katayama, M. Kang, K. Takimiya, M. Ikeda, H. Kuwabara, M. Hamada, J. Takeya

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33 Citations (Scopus)

Abstract

High carrier-mobility organic field-effect transistors are developed employing high-k gate dielectrics so that unprecedentedly high transconductance is realized. 2,9-didecyl-dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b] thiophene (C 10-DNTT) solution-crystallized films are coated on hybrid gate insulators of silane self-assembled monolayers and high-k Al2 O 3 formed by atomic-layer-deposition. Intrinsically high carrier mobility exceeding 10 cm2/ Vs in the crystalline C10-DNTT is preserved even on the high-k gate insulators because of suppressed coupling of the field-induced carriers to the polarization of the dielectrics.

Original languageEnglish
Article number223304
JournalApplied Physics Letters
Volume101
Issue number22
DOIs
Publication statusPublished - 2012 Nov 26
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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