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.
WU Xiao-Ming;HUA Yu-Lin;WANG Zhao-Qi;ZHENG Jia-Jin;FENG Xiu-Lan;SUN Yuan-Yuan. White Organic Light-Emitting Devices Based on 2-(2-Hydroxyphenyl) Benzothiazole and Its Chelate Metal Complex[J]. 中国物理快报, 2005, 22(7): 1797-1799.
WU Xiao-Ming, HUA Yu-Lin, WANG Zhao-Qi, ZHENG Jia-Jin, FENG Xiu-Lan, SUN Yuan-Yuan. White Organic Light-Emitting Devices Based on 2-(2-Hydroxyphenyl) Benzothiazole and Its Chelate Metal Complex. Chin. Phys. Lett., 2005, 22(7): 1797-1799.
2005, Vol. 22 
