Solution Eleotrochemi Iuminescent Cell with a High Luminance Using a Rubrene Investigation of using an lon Conductive Assistant Dopant to improve Transportation of carrier

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  • ルブレンを発光材料に用いた溶液系ECL素子の高輝度化 : イオン伝導補助ドーパントを用いたキャリア輸送向上の検討(表示記録用有機材料およびデバイス)
  • ルブレンを発光材料に用いた溶液系ECL素子の高輝度化--イオン伝導補助ドーパントを用いたキャリア輸送向上の検討
  • ルブレン オ ハッコウ ザイリョウ ニ モチイタ ヨウエキケイ ECL ソシ ノ コウキドカ イオン デンドウ ホジョ ドーパント オ モチイタ キャリア ユソウ コウジョウ ノ ケントウ

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Abstract

Conventional solution electrochemluminescent (SECL) cells have a low luminance. In this research, we propose an ion conductive assistant dopant (ICAD) system to improve the luminance of SECL cells. The solution of the cell consists of mixed solvent (o-dichlorobenzene/acetonitrile=2/1 (vol/vol)), rubrene used as the emitting material and 1,2-diphenoxyethane used as the ICAD. When voltage is applied to this SECL cell, the cell achieves a luminance of 183cd/m^2 and a luminous efficiency of 1.5cd/A at 8V with yellow emission. On the other hand, an SECL cell without an ICAD results in a low luminance of 0.3cd/m^2 at 8V, corresponding to a conventional SECL cell. The ICAD improves the luminance 600 times by enhancing the ion conduction of rubrene cations in the solution. Furthermore, when the mixed solvent (o-dichlorobenzene/toluene=2/1(vol/vol)), which has a high voltage resistance, is used in the SECL cell, the cell obtains a maximum luminance of 986 cd/m^2 at 80V. The features of the SECL cell are a simple cell structure and a transparent emitting area. SECL cells are expected to be used in unique displays with a see-through function.

Journal

  • ITE Technical Report

    ITE Technical Report 26.25 (0), 1-6, 2002

    The Institute of Image Information and Television Engineers

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