한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
권호 표지

Exciplex emission in bilayer Light-emitting device

  • Liang, Yu-Jun (Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences) ;
  • Zhang, Hong-Jie (Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences) ;
  • Han, Sang-Do (Hydrogen Energy Lab., Korea Institute of Energy Research) ;
  • Jung, Young-Ho (Hydrogen Energy Lab., Korea Institute of Energy Research) ;
  • Taxak, Vinod Bala (Maharshi Dayanard University)
  • Published : 2002.08.21
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Abstract

The bilayer organic light-emitting diode using Al (DBM) $_3$ (DBM=Dibenzoylmethane) as an emitting material and poly (N-vinylcarbazole) (PVK) as hole-transport material, emitted bright blue-green light instead of blue light. The blue-green emission is attributed to exciplex formation at the solid interface between Al (DBM) $_3$ and the hole-transport material. The exciplex formation was evidenced by the measurement of the photoluminescence spectra and lifetimes of Al (DBM) $_3$, PVK and an equimolar amount of mixture of Al (DBM) $_3$ and PVK.

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