대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
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등가 회로 모델을 이용한 다층 유기발광 소자의 특성 분석

Property analysis of multi layer Organic Light Emitting Diodes using equivalent circuit models

  • 박형준 (성균관대학교 정보통신공학부) ;
  • 김현민 (성균관대학교 정보통신공학부) ;
  • 이준신 (성균관대학교 정보통신공학부) ;
  • 남은경 (성균관대학교 물리학과) ;
  • 정동근 (성균관대학교 물리학과)
  • Park, Hyung-Jun (School of information and Communication Engineering, Sungkyunkwan University) ;
  • Kim, Hyun-Min (School of information and Communication Engineering, Sungkyunkwan University) ;
  • Yi, Jun-Sin (School of information and Communication Engineering, Sungkyunkwan University) ;
  • Nam, Eun-Kyoung (Department of physics, Sungkyunkwan University) ;
  • Jung, Dong-Geun (Department of physics, Sungkyunkwan University)
  • 발행 : 2006.10.27
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초록

The impedance spectroscopy is one of the effective ways to understand the electrical properties of organic light emitting diodes. The frequency-dependant properties of small molecule based OLEDs have been studied. The equivalent circuit of single-layer device is composed of contact resistance ($R_c$), bulk resistance ($R_p$) and bulk capacitance ($C_p$). The equivalent circuit of double layer device is composed of two parallel circuits connected in series, each of which is a parallel resistor and a capacitor. We have fabricated a double layer device indium-rio-oxide (ITO, anode), N,NV -diphenyl- N,NV -bis(3-methylphenyI)-1,1V -diphenyl-4,4V-diamine (TPD, hole-transporting layer), tris-(8-hydroxyquinoline) aluminum (Alq3, emitting layer), and aluminum (AI, cathode) and two single layer devices ([TO/ Alq3/ AI, ITO/TPD/AI).

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