Electrical characteristics of organic perylene single-crystal-based field-effect transistors

Jin Woo Lee, Han Saem Kang, Min Ki Kim, Kihyun Kim, Mi Yeon Cho, Young Wan Kwon, Jinsoo Joo, Jae Il Kim, Chang Seop Hong

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We report on the fabrication of organic field-effect transistors (OFETs) using perylene single crystal as the active material and their electrical characteristics. Perylene single crystals were directly grown from perylene powder in a furnace using a relatively short growth time of 1-3 h. The crystalline structure of the perylene single crystals was characterized by means of a single-crystal x-ray diffractometer. In order to place the perylene single crystal onto the Au electrodes of the field-effect transistor, a polymethlymethacrylate thin layer was spin-coated on top of the crystal surface. The OFETs fabricated using the perylene single crystal showed a typical p -type operating mode. The field-effect mobility of the perylene crystal based OFETs was measured to be ∼9.62× 10-4 cm2 /V s at room temperature. The anisotropy of the mobility implying the existence of different mobilities when applying currents in different directions was observed for the OFETs, and the existence of traps in the perylene crystal was found through the measurements of the temperature-dependent mobility at various operating drain voltages.

Original languageEnglish
Article number124104
JournalJournal of Applied Physics
Volume102
Issue number12
DOIs
Publication statusPublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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