Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Characteristics of top emission PLED by metal anodes

금속 애노드의 종류에 따른 Top Emission 특성 평가

  • 이찬재 (전자부품연구원 디스플레이연구센터) ;
  • 문대규 (전자부품연구원 디스플레이연구센터) ;
  • 곽민기 (전자부품연구원 디스플레이연구센터) ;
  • 김영훈 (전자부품연구원 디스플레이연구센터) ;
  • 한정인 (전자부품연구원 디스플레이연구센터)
  • Published : 2002.07.08
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Abstract

Hole injection characteristics have been investigated with various metal anodes such as Ni, Pt, Cu, and AI for the top emission polymer light emitting diodes (PLEDs). Devices were composed of metal anode, Poly(3,4-ethylenedioxythiophene) doped with polystyrene sultponated acid (PEDT:PSS), poly [2-methoxy-5-(2-ethylhexyoxy)-1,4-phenylene-vinylene] (MEH-PPV) and Al cathode. The hole injection from ITO anode has been also investigated for the comparison. The I-V characteristics of the PLEDs with different metal anodes were measured. The work function of the anode is strongly related to the hole injection of the device. The current density of the device with Ni anode with higher work function was higher than that of the device with ITO or AI anode at the same operating voltage.

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