Ambipolar light-emitting organic single-crystal transistors with a grating resonator

Kenichi Maruyama, Kosuke Sawabe, Tomo Sakanoue, Jinpeng Li, Wataru Takahashi, Shu Hotta, Yoshihiro Iwasa, Taishi Takenobu*


    研究成果: Article査読

    25 被引用数 (Scopus)


    Electrically driven organic lasers are among the best lasing devices due to their rich variety of emission colors as well as other advantages, including printability, flexibility, and stretchability. However, electrically driven lasing in organic materials has not yet been demonstrated because of serious luminescent efficiency roll-off under high current density. Recently, we found that the organic ambipolar single-crystal transistor is an excellent candidate for lasing devices because it exhibits less efficient roll-off, high current density, and high luminescent efficiency. Although a single-mode resonator combined with light-emitting transistors (LETs) is necessary for electrically driven lasing devices, the fragility of organic crystals has strictly limited the fabrication of resonators, and LETs with optical cavities have never been fabricated until now. To achieve this goal, we improved the soft ultraviolet-nanoimprint lithography method and demonstrated electroluminescence from a single-crystal LET with a grating resonator, which is a crucial milestone for future organic lasers.

    ジャーナルScientific Reports
    出版ステータスPublished - 2015 5月 11

    ASJC Scopus subject areas

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