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

한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지

다양한 리간드를 갖는 Europium Complex의 전기적 광학적 특성

  • 이상필 (홍익대학교 전기제어공학과) ;
  • 표상우 (홍익대학교 전기제어공학과) ;
  • 이명호 (홍익대학교 전기제어공학과) ;
  • 이한성 (인천전문대학 전기공학과) ;
  • 김영관 (홍익대학교 화학공학과) ;
  • 김정수 (홍익대학교 전기제어공학과)
  • 발행 : 1998.11.01
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초록

Electroluminescent(EL) devices based on organic materials have been of great interest due to their possible applications for large-area flat-panel displays. They are attractive because of multicolor emission low operation voltage. In this study, several Eu complexes such as Eu(TPB)$_3$(Phen) and Eu(TPB)$_3$(Bpy) were synthesized and the photoluminescence(PL) and electroluminescence (EL) characteristics of their thin films were investigated by fabricating the devices having a structure of glass substrate/ITO/TPD/Europium-complexs/Alq$_3$/Al, where aromatic diamine(TPD) was used as an hole transporting and Alq$_3$ was used as an electron transporting materials. It was found that the photoluminescence(PL) and electroluminescence(EL) characteristics of these Europium complexes were dependent upon the ligands coordinated to Europium metal. Details on the explanation of electrical transport phenomena of the structure with I-V characteristics of the OLEDs using the trapped-charge-limited current(TCLC) model will be discussed.

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