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《Semiconductor Optoelectronics》 2007-01
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Study on Blue OLED with TPBi as Emitting Host Material

ZHONG Jian,CHEN Wen-bin,YANG Gang,JIANG Quan,ZHANG Lei,WANG Jun,LIN Hui,JIANG Ya-dong(College of Optoelectronic Information,University of Electronic Science and Technology of China,Chengdu 610064,CHN)  
A kind of multi-layer structure blue organic light-emitting diode(OLED) has been developed with TPBi as emitting host material by using vacuum deposition.Two kinds of materials are used as the emitting layer at the same time and the same chamber.The typical structure of OLED is ITO/CuPc(30 nm)/NPB(40 nm)/TPBi(30 nm)∶GDI691(x%)/Alq3(20 nm)/LiF(1 nm)/Al(50 nm),x% is the doping consistence in emitting layer of OLED and its value changes from 1% to 4%.Optoelectronic performances including brightness,efficiency,spectrum,etc.,change with the doping consistence.When x% is 3%,the brightness of the device reaches to 6 827 cd m-2 at the drive voltage of 15 V,CIE coordinates are x=0.147,y=0.215,maximum luminous efficiency is 6.77 lm·W-1,and the blue emission spectrum peak is 468 nm.
【Fund】: 广东省“十五”重大基金资助项目(H04010501W050311);; 电子科技大学青年基金资助项目(YF0205021)
【CateGory Index】: TN383.1
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