Organic single crystal transistor characteristics of single-crystal phase pentacene grown by ionic liquid-assisted vacuum deposition

Yoko Takeyama, Shimpei Ono, Yuji Matsumoto

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

Organic transistor characteristics of single-crystal phase pentacene were investigated. Ionic liquids (ILs) were used as not only a gate dielectric material in the transistors but also a crystallization solvent in vacuum deposition of pentacene. The crystal sizes reached 200 μm and their surface exhibits a molecularly step-and-terrace structure. There was no sign of IL molecules inside the crystal, and the impurity level of 6,13-pentacenequinone was also reduced. The average value of the field-effect mobility was not so inferior to those for the conventional pentacene single crystals, and the highest value exceeded 5 cm 2/Vs, with the on/off current ratio of 10 4.

Original languageEnglish
Article number083303
JournalApplied Physics Letters
Volume101
Issue number8
DOIs
Publication statusPublished - 2012 Aug 20
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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