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Multi-color display and its model for a white OLED combined with optical color filters
Authors:Xiaoming Wu   Yulin Hua   Zhaoqi Wang   Jiajin Zheng   Shougen Yin   Jiachun Deng   Kongwu Wu   Songliu   Feijian Zhu  Xia Niu
Affiliation:aInstitute of Modern Optics, Nankai University, Tianjin 300071, PR China;bKey Laboratory of Opto-electronic Infromation Science and Technology, Ministry of Education, China;cInstitute of Material Physics, Tianjin University of Technology, Tianjin 300191, PR China
Abstract:A bright white organic light-emitting diode (OLED) has been successfully fabricated in which a greenish-white emitting host Bis-(2-(2-hydroxyphenyl) benzothiazole)zinc (Zn(BTZ)2) is doped with an orange-red fluorescent dye 5,6,11,12-tetraphenylnaphthacene (rubrene). The pure white light emission with CIE coordinates of (0.341, 0.334) is achieved at the driving voltage of 20 V, and the corresponding luminance and external quantum efficiency are 4000 Cd/m2 and 0.63%. On the other hand, the pure red, green, and blue (RGB) emissions are obtained from the white OLED combined well with RGB custom-built optical color filters (CFs) with peaks at 616, 556, and 456 nm, respectively. Moreover, based upon the color mixture principles, we build a model of multi-color display mixed by the pure RGB emissions under the controllable bias.
Keywords:White organic light-emitting diode   Optical color filters   Color mixture   Multi-color display
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