Lateral organic light-emitting diode with field-effect transistor characteristics

Takahito Oyamada, Hiroyuki Uchiuzou, Seiji Akiyama, Yoshiaki Oku, Noriyuki Shimoji, Kazumi Matsushige, Hiroyuki Sasabe, Chihaya Adachi

研究成果: Contribution to journalArticle査読

111 被引用数 (Scopus)

抄録

We succeeded in observing bright electroluminescence (EL) from 1 wt % -rubrene doped tetraphenylpyrene (TPPy) as an active layer in a lateral organic light-emitting diode structure that allowed field-effect transistor operation. This device configuration provides an organic light-emitting diode structure where the anode (source) and cathode (drain) electrodes are laterally arranged, providing us a chance to control the EL intensity by changing the gate bias. We demonstrated that TPPy provides compatible transistor and EL characteristics. Further, not only rubrene doping into the TPPy host but also adjusting the source-drain channel length significantly improved the EL characteristics. We observed a maximum EL quantum efficiency (ηext) of ∼0.5% with a CrAu source (S) -drain (D) electrode and a slightly higher ηext of ∼0.8% with S-D electrodes of MgAuAu, AlAu, CrYAuAu, and MgAlAu multilayers, aiming for simultaneous hole and electron injection.

本文言語英語
論文番号074506
ジャーナルJournal of Applied Physics
98
7
DOI
出版ステータス出版済み - 10 1 2005
外部発表はい

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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