Surface selective deposition of molecular semiconductors for solution-based integration of organic field-effect transistors

Takeo Minari, Masataka Kano, Tetsuhiko Miyadera, Sui Dong Wang, Yoshinobu Aoyagi, Kazuhito Tsukagoshi

Research output: Contribution to journalArticlepeer-review

94 Citations (Scopus)

Abstract

A bottom-up fabrication technique for the preparation of self-organized organic field-effect transistors (OFETs) on flexible plastic substrates is presented. Solution-based self-organization of OFETs is achieved by patterning the insulator surface with solution-wettable and unwettable regions. The proposed method satisfies several important requirements of printable electronics, including reduction in energy consumption, minimization of facilities, and the on-demand use of molecular materials. Self-organized OFETs display an average mobility of 0.53 cm2 / (V s), on/off ratio of 109, and subthreshold slope of 0.18 V/dec, with near-zero and narrowly distributed threshold voltage. An inverter circuit prepared using these devices is demonstrated with high signal gain.

Original languageEnglish
Article number093307
JournalApplied Physics Letters
Volume94
Issue number9
DOIs
Publication statusPublished - 2009
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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