期刊
THIN SOLID FILMS
卷 516, 期 11, 页码 3637-3640出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2007.08.103
关键词
white OLED; Zn(HPB)(2); CIE; blue emitting layer
类别
资金
- Ministry of Knowledge Economy (MKE), Republic of Korea [B0008892] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [핵06B3013, R01-2006-000-11120-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We synthesized zinc (II) [2-(2-hydroxyphenyl)benzoxazole] (Zn(HPB)(2)) as blue emitting materials and evaluated in the organic light emitting diodes (OLEDs). The layer of Zn(HPB)2 doped with 4-(dicyanomethylene)-2-t-butyl-6(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) (Zn(HPB)2:DCJTB) as emitters has been demonstrated. The structure of the device is indium-tin-oxide (ITO)/N,N'-bis-(1-naphthl)-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB, 40 nm)/Zn(HPB)(2)/Zn(HPB)(2):DCJTB/Alq(3) (20 nm)/LiF/Al. The thickness of Zn(HPB)(2) layer was 0, 10, 20, 30 nm at the same time the thickness of Zn(HPB)(2):DCJTB layer were 40, 30, 20, 10 nm. When thickness of Zn(HPB)(2) layer was 30 nm and the thickness of Zn(HPB)2:DCJTB layer was 10 nm, white emission is achieved. The Commission Internationale de l'Eclairage (CIE) coordinates of the white emission are (0.304, 0.332) at an applied voltage of 10.5V. (c) 2007 Elsevier B.V. All rights reserved.
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