Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A Study on the Fabrication and Characteristic Analysis of Multiheterostructure White Organic Light Emitting Device

다층구조 배색 유기발전소자의 제작 및 특성 분석에 관한 연구

  • 노병규 (현대엘씨디 유기EL그룹) ;
  • 강명구 (극동정보대학 전자통신과) ;
  • 오환술 (건국대학교 정보통신대학 전자공학부)
  • Published : 2002.05.01
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Abstract

In this paper, multiheterostructure white organic light-emitting device was fabricated by vacuum evaporation. The structure of white organic light-emitting device is ITO/CuPc/TPD/DPBi:DPA/$Alq_3/Alq_3$:DCJTB/BCT/$Alq_3$/Ca/Al. Three primary colors are implemented with DPVBi, Alq$_3$and DCJTB. The maximum EL wavelength of the fabricated white organic light-emitting device is 647nm. And the CIE coordinate is (0.33, 0.33) at 13 V. In the fabrication of white organic light-emitting devices with DCJTB, $Alq_3$, DPVBi, the EL spectrum has two peaks at 492nm, 647nm. Two peaks appeared because the blue light is combined with green light. The maximum wavelength of red light is not changed with applied voltage. After voltage applied, for the first time, the electrons met the holes in the red emission layer and emitted red light. And then the electrons moved to the green emission layer, and blue emission layer continuously. Finally, when all of the emission layer activated, the white light is emitted.

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References

  1. Appl. Phys. Lett. v.51 no.12 Organic electroluminescent diodes C.W. Tang;S.A. VanSlyke https://doi.org/10.1063/1.98799
  2. Appl. Phys. Lett v.63 no.19 Bright blue electoluminescence from poly(N-vinylcarbazole) J. Kido;K. Hongawa;K. Okyyama;K. Nagai https://doi.org/10.1063/1.110402
  3. Appl. Phys. Lett v.70 no.2 Enhanced electron injection in organic electroluminescence devices using an Al/LiF electrode L. S. Hung;C. W. Tang;M. G. Mason https://doi.org/10.1063/1.118344
  4. Appl. Phys. Lett. v.87 no.1 Photoemission Study of Alq3 and Al/LiF/ Alq3 interface Q. T. Le;L. Yan;Y. G. Gao;M. G. Mason;D. J. Giesen;C. W. Tang
  5. J. Appl. Phys. v.86 no.5 Photo luminescence quantum yield of pure and molecularly doped organic solid films H. Mattoussi;H. Murata;C. D. Merritt;Y. Lizumi;J. Kido;Z.H. Kafafi https://doi.org/10.1063/1.371104
  6. 전기전자재료학회논문지 v.13 no.11 유기물 적층 구조에 따른 유기발광소자의 발광특성에 관한 연구 노병규;김중연;오환술
  7. 전기전자재료학회논문지 v.14 no.11 PVK:Bu-PBD:C6 단일층 녹색발광소자의 양자효율 개선에 관한 연구 조재영;노병규;오환술
  8. 전기전자재료학회논문지 v.11 no.10 유기발광소자의 막두께 및 음극전극의 변화에 따른 발광특성 김형권;이덕출
  9. Science v.267 Multilayer white light-emitting organic electroluminescent device J. Kido;M. Kimura;K. Nagai https://doi.org/10.1126/science.267.5202.1332
  10. Jpn. J. Appl. Phys. v.35 no.3B White-light-emitting organic electroluminescent device using lanthanide complexes J. Kido;W. Ikeda;M. Kimura;K. Nagai https://doi.org/10.1143/JJAP.35.L394
  11. 月刊 ディスプレイ no.10 White Light Emitting Organic EL Devices J. Kido
  12. J. Appl. Phys. v.81 no.7 Efficient blue-green and white light-emitting electrochemical cells based on poly[9,9-bis(3,6-di oxaheptyl)-fluorene-2, 7-diyl] Y. Yang;Q. Pei https://doi.org/10.1063/1.364313
  13. Appl. Phys. Lett. v.73 no.4 White light emission from exciplex in a bilayer device with two blue light-emitting polymers C. Chao;S. Chen https://doi.org/10.1063/1.121888
  14. Jpn. J. Appl. Phys. v.35 White-light-emitting material for organic electroluminescent devices Y. Hamada;T. Sano;H. Fuji;Y. Nismo https://doi.org/10.1143/JJAP.35.L1339
  15. IEICE Trans. Electron. v.E80-C no.8 White organic electroluminescent devices with mixed single layer S. Naka;K. Shinno;H. Okada;H. Anada;H. Onnagawa;T. Izumizawa;M. Uchida;K. Furukawa
  16. Appl. Phys. Lett. v.74 no.5 White light emission induced by confinement in organic multiheterostructures Z. Y. Xie;J. S. Huang;C. N. Li;S. Y. Liu;Y. Wang;Q. Li;J. C. Shen https://doi.org/10.1063/1.123190
  17. Synthetic Metals v.111-112 White light electroluminescence from a hole-transporting layer of mixed organic materials Z. Q. Gao;C. S. Lee;I. Bello;S. T. Lee https://doi.org/10.1016/S0379-6779(99)00434-8
  18. Synthetic Metals v.108 Tuning of chromaticity in organic multiple-quantum well white light emitting devices Z. Y. Xie;J. Feng;J. S. Huang;S. Y. Liu;Y. Wang;J. C. Shen https://doi.org/10.1016/S0379-6779(99)00161-7