Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Energy Band Schemes of Organic Electroluminescence Devices Using Lanthanide Metal Complexes

란탄계 금속 착화합물을 이용한 유기 전기 발광 소자의 에너지 밴드 구조의 연구

  • Pyo, S.W. (School of Electrical & Electronic Eng. Hongik Univ.) ;
  • Lee, J.H. (School of Electrical & Electronic Eng. Hongik Univ.) ;
  • Lee, H.S. (School of Electrical & Electronic Eng. Hongik Univ.) ;
  • Lee, S.H. (Dept. Chemical Eng. Hongik Univ.) ;
  • Kim, Y.K. (Dept. Chemical Eng. Hongik Univ.) ;
  • Kim, J.S. (School of Electrical & Electronic Eng. Hongik Univ.)
  • 표상우 (홍익대학교 전기전자공학부) ;
  • 이재혁 (홍익대학교 전기전자공학부) ;
  • 이한성 (홍익대학교 전기전자공학부) ;
  • 이승희 (홍익대학교 화학공학과) ;
  • 김영관 (홍익대학교 화학공학과) ;
  • 김정수 (홍익대학교 전기전자공학부)
  • Published : 1999.07.19
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Abstract

In this study, several lanthanide complexes such as Eu$(TTA)_3$(Phen). Tb$(ACAC)_3$(Cl-Phen) were synthesized and the white-light electroluminescence (EL) characteristics of their thin films were investigated. where the devices having structures of anode/TPD/Tb$(ACAC)_3$(Cl-Phen)/Eu$(TTA)_3$(Phen)/$Alq_3$ or $Bebq_2$/ cathode and the low work function metal alloy such as Li:Al was used as the electron injecting electrode (cathode). Details on the white-light-emitting characteristics of these device structures were explained by the energy band diagrams of various materials used in these structures, where the energy levels of new materials such as ionization potential (IP) and electron affinity (EA) were measured by cyclic voltametric method.

Keywords