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Jpn. J. Appl. Phys. 46 (2007) pp. L596-L598  |Previous Article|  |Table of Contents|
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Letter

Ambipolar Field-Effect Transistor of High Photoluminescent Material Tetraphenylpyrene (TPPy) Single Crystal

Satria Zulkarnaen Bisri1, Tetsuo Takahashi1, Taishi Takenobu1,2, Masayuki Yahiro3, Chihaya Adachi3, and Yoshihiro Iwasa1,2

1Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
2The Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Kawaguchi, Saitama 330-0012, Japan
3Center for Future Chemistry, Kyushu University, Nishi, Fukuoka 819-0395, Japan

(Received April 7, 2007; revised April 26, 2007; accepted April 29, 2007; published online June 15, 2007)

An ambipolar field-effect transistor (FET) based on a 1,3,6,8-tetraphenylpyrene (TPPy) single crystal, a highly photoluminescent material, has been successfully fabricated. Several kinds of metal electrodes have been employed to investigate the charge injection characteristics into the single-crystal FET. Hole and electron mobilities of 0.34 and 7.7×10-2 cm2/(V·s) were achieved using Au and Ca electrodes, respectively. The ambipolar characteristic of this device gives a prospect for further development in light-emitting FET operation.

KEYWORDS: organic field-effect transistor, molecular crystal, ambipolar transistor, condensed aromatic hydrocarbon, electron traps, electrodes
URL: http://jjap.ipap.jp/link?JJAP/46/L596/
DOI: 10.1143/JJAP.46.L596


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