White Organic Light-Emitting Diode Using Blue-Light-Emitting Zn(HPB)2 Material

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概要

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• A novel blue light emitter, zinc(II) [2-(2-hydroxyphenyl)benzoxazole] [Zn(HPB)2], has been synthesized and evaluated in organic light-emitting diodes (OLED). Hereby, an OLED with a white light emission and a high color stability using Zn(HPB)2 and a layer of tris(8-quinolinolato) aluminum (Alq3) doped with 4-(dicyanomethylene)-2-t-butyl-6(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) (Alq3:DCJTB) as emitters has been demonstrated. The structure of this OLED is indium–tin-oxide (ITO)/N,N$'$-bis-(1-naphthl)-diphenyl-1,1$'$-biphenyl-4,4$'$-diamine (NPB; 40 nm)/Zn(HPB)2 (40 nm)/Alq3:DCJTB (40 nm)/LiF/Al. The Commission Internationale de l'Eclairage (CIE) coordinates of the white emission are $(0.32, 0.33)$ at an applied voltage of 14 V. The photoluminescence (PL) and electroluminescence (EL) spectra of Zn(HPB)2 showed emission peaks at a wavelength of 455 nm.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2007-04-30

著者

• KWON Young-Soo

  Department of Electrical Engineering & NTRC, Dong-A University

• Lee Burm-jong

  Department Of Chemistry & And Institute Of Functional Materials Inje University

• KIM Won-Sam

  Department of Chemistry & BPRC, Inje University

• Kim Dong-eun

  Department Of Bioscience And Biotechnology Konkuk University

• Kwon Young-Soo

  Department of Electrical Engineering and NTRC, Dong-A University, 840 Hadan 2-dong, Saha-gu, Busan 604-714, Korea

• Lee Burm-Jong

  Department of Chemistry and Institute of Functional Materials, Inje University, 607 Obang-dong, Gimhae 621-749, Korea

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