A Study on the Fabrication and Characteristic Analysis of Organic Light Emitting Device using BAlq

BAlq를 적용한 유기발광소자의 제작 및 특성 분석에 관한 연구

  • 오환술 (건국대학교 전자공학부) ;
  • 황수웅 (건국대학교 전자공학부) ;
  • 강성종 (건국대학교 전자공학부)
  • Published : 2004.01.01


BAlq was fabricated as for hole blocking layer in the OLED devices to investigate its electrical and optical characteristics. Device structure was ITO/$\alpha$ -NPD/EML/BAlq/Alq3/Al:Li using TYG-201, DPVBi (4, 4 - Bis (2, 2 - diphenylethen-1 - yls) - Biphenyl), Alq and DCJTB (4-(dicyanomethylene)-2- (1-propyls)6-methy 4H-pyrans) as green emitting material, blue emitting material, host material for red emission and red emitting guest material respectively. The OLED device showed optimum working voltage and electron density at 600 cd/$m^2$ when thickness of BAlq is 25$\AA$ for RGB OLED devices while their efficiencies are better at 50$\AA$ of BAlq. Red and blue color OLEDs also fabricated using 30$\AA$ thickness of BAlq and compared with those without BAlq layer. BAlq was more effective in electrical properties such as working voltage, current density and efficiency of red OLED than blue and green ones. This study describes that 30$\AA$ is optimum thickness of BAlq for best performance of full color OLED devices when using BAlq as a hole blocking material.


  1. Appl. Phys. Lett. v.51 no.12 Organic electroluminescent diodes C.W.Tang;S.A.Vanslyke
  2. Appl. Phys. Lett. v.63 no.19 Bright blue electoluminescence from poly(N-vinylcarbazole) J.Kido;K.Hongawa;K.Okyyama;K.Nagai
  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
  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
  6. 전기전자재료학회논문지 v.13 no.11 유기물 적층 구조에 따른 유기발광소자의 발광특성에 관한 연구 노병규;김중연;오환술
  7. 한국전기전자재료학회 v.14 no.11 PVK:Bu-PBD:C6 단일층 녹색발광소자의 양자효율 개선에 관한 연구 조재영;노병규;오환술
  8. 전기전자재료학회논문지 v.13 no.11 유기물 적층구조에 따른 유기발광소자의 발광특성에 관한 연구 김중연;노병규;오환술
  9. Appl. Phys. Lett. v.81 no.Issue 1 High operational stability of electrophosphorescent devices R.C.Kwong;M.R.Nugent;L.Michalski;T.Ngo;K.Rajan;Y.Tung;M.S.Weaver;T.X.Zhou;M.Hack;M.E.Thompson;S.R.Forrest;J.J.Brown
  10. Synthetic Metals v.132 no.Issue 1 An effecient and bright organic white-light-emitting device K.Yang;W.Gao;J.Zhao;J.Sun;S.Lu;S.Liu
  11. Thin Solid Films v.363 no.Issues 1-2 Energy transfer and white emitting organic thin film electroluminescence Z.Zhilin;J.Xueyin;X.Shaohong
  12. 月刊 デイスプレイ 低分子 有機EL材料の 開發狀況 T.Enokida;T.Kaneko;T.Kimura
  13. Synthetic Metals v.91 Characterization of blue-light-emitting organic electrolumines-cent devices E.I.Haskal
  14. Thin Solid Films v.441 no.Issues 1-2 4-(Dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran doped red emitters in organic light-emitting devices T.Liu;C.Iou;S.Wen;C.H.Chen

Cited by

  1. Synthesis and blue electroluminescent properties of zinc (II) [2-(2-hydroxyphenyl)benzoxazole] vol.515, pp.12, 2007,
  2. Luminescence mechanisms of green and blue organic light-emitting devices utilizing hole-blocking layers vol.134, pp.5, 2005,
  3. Photoluminescence and electroluminescence properties of organotin (IV) complexes vol.321, pp.1-3, 2008,