Effect of Surface Plasmon on 4,4$'$-N,N$'$-Dicarbazolylbiphenyl:Tris(2-phenylpyridinate) Iridium(III)-Based Phosphorescent Organic Light-Emitting Diodes

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概要

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• The spectra of two organic light-emitting diodes (OLEDs), where the emission layers consisted of either 4,4$'$-N,N$'$-dicarbazolylbiphenyl (CBP) doped with tris(2-phenylpyridinate) iridium(III) [Ir(ppy)3] [CBP:Ir(ppy)3] or CBP/CBP:Ir(ppy)3 were compared. Both devices had an Ag film as a cathode. A subpeak appeared only for the OLED with CBP/CBP:Ir(ppy)3, when it was current-excited and photoexcited in the region with the Ag film. This was considered to be caused by the surface plasmon effect. Experimental results suggested that the surface plasmon enhancement of radiation was effective in an emitting material with low luminescence efficiency.

• 2009-09-25

著者

• Kasahara Kenichi

  Faculty of Science & Engineering, Ritsumeikan University

• Miura Nobuhito

  Frontier Materials Development Laboratories, Kaneka Corporation, 2257-4 Nojicho-Sunaike, Kusatsu, Shiga 525-0055, Japan

• Miura Nobuhito

  Frontier Materials Development Laboratories, Kaneka Corporation, 2257-4, Nojicho-Sunaike, Kusatsu, Shiga 525-0055, Japan

• Ohtsuka Takeo

  Frontier Materials Development Laboratories, Kaneka Corporation, 2257-4 Nojicho-Sunaike, Kusatsu, Shiga 525-0055, Japan

• Katoh Takuji

  Faculty of Science and Engineering, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga 525-8577, Japan

• Sakuma Yoshihiko

  Faculty of Science and Engineering, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga 525-8577, Japan

• Kasahara Kenichi

  Faculty of Science and Engineering, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga 525-8577, Japan

• Ohtsuka Takeo

  Frontier Materials Development Laboratories, Kaneka Corporation, 2257-4, Nojicho-Sunaike, Kusatsu, Shiga 525-0055, Japan

関連論文

• C-4-15 低駆動電圧アクティブMMIレーザの動特性の検討(C-4. レーザ・量子エレクトロニクス, エレクトロニクス1)
• Markedly Different Rise and Fall Times in Transient Electroluminescence of 4,4$'$-N,N$'$-Dicarbazolylbiphenyl:fac-Tris(2-phenylpyridinate) Iridium(III)-Based Organic Light Emitting Diodes
• Effect of Surface Plasmon on 4,4$'$-N,N$'$-Dicarbazolylbiphenyl:Tris(2-phenylpyridinate) Iridium(III)-Based Phosphorescent Organic Light-Emitting Diodes
• Analytical Model for Obtaining the Ionization Rate Ratio of Mesa InAlAs Avalanche Photodiodes

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