Light-Emitting Field-Effect Transistors Having Metal Electrodes Modified with an Organic Thin Film
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概要
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We have improved the emission properties and the carrier mobilities of organic light-emitting field-effect transistors (OLEFETs) by modifying the metal electrode(s) with a thin film of n-type thiophene/phenylene co-oligomer (TPCO). Their semiconductor layer was a p-type TPCO crystal. When we used the modified electrode for electron injection, the device exhibited eight times higher emission intensity than a device with unmodified electrodes. By contrast, employing the modified electrode as the hole injection contact, we achieved the maximum hole mobility of 0.11 cm2\cdotV-1\cdots-1 under the hole-enhancement mode. The modified electrodes effectively functioned for injecting both electrons and holes into the p-type crystal. The origin of this is briefly discussed.
- 2012-04-25
著者
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Yamao Takeshi
Department Of Electronics And Information Science Faculty Of Engineering And Design Kyoto Institute
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Hotta Shu
Department Of Macromolecular Science And Engineering Graduate School Of Science And Technology Kyoto
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Okada Akinori
Department Of Industrial Relations School Of Social Relations Rikkyo (st. Paul's) University
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Yamao Takeshi
Department of Macromolecular Science and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Kyoto 606-8585, Japan
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Fukaya Yoshihide
Department of Macromolecular Science and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Kyoto 606-8585, Japan
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