| Original Articles |
|
|
|
|
White Organic Light-Emitting Devices Based on 2-(2-Hydroxyphenyl) Benzothiazole and Its Chelate Metal Complex |
| WU Xiao-Ming1,2;HUA Yu-Lin2;WANG Zhao-Qi1;ZHENG Jia-Jin1;FENG Xiu-Lan2;SUN Yuan-Yuan2 |
| 1Institute of Modern Optics, Nankai University, Tianjin 300071
2Institute of Material Physics, Tianjin University of Technology, Tianjin 300191 |
|
| Cite this article: |
|
WU Xiao-Ming, HUA Yu-Lin, WANG Zhao-Qi et al 2005 Chin. Phys. Lett. 22 1797-1799 |
|
|
|
Abstract We present three kinds of organic light-emitting devices (OLED) fabricated to achieve the emission of bright and pure white light. Device A, with a double-layered structure using 2-(2-hydroxyphenyl) benzothiazole (HBT) and poly (N-vinylcarbazole) (PVK) as the emitting layer (EML) and the hole transport layer (HTL) respectively, could realize the blue-green light emission. Bis-(2-(2-hydroxyphenyl) benzothiazole)zinc (Zn(BTZ)2), synthesized with zinc acetate dihydrate and HBT to form a complex, is used as main EMLs in a similar structure to fabricate devices B and C. Bright and pure white light emissions can be obtained from device C which was fabricated with a green-white emitting host Zn(BTZ)2 and red dopant 5,6,11,12-tetraphenylnaphthacene (rubrene). The maximum quantum efficiency of device C could reach 0.63%, and the corresponding brightness and CIE coordinates were 4000cd/m2 and (x= 0.341, y= 0.334) at the driving voltage of 20V.
|
| Keywords:
78.60.Fi
85.60.Jb
|
|
|
Published: 01 July 2005
|
|
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
