Multi-color display and its model for a white OLED combined with optical color filters |
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| Authors: | Xiaoming Wu Yulin Hua Zhaoqi Wang Jiajin Zheng Shougen Yin Jiachun Deng Kongwu Wu Songliu Feijian Zhu Xia Niu |
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| Institution: | 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 |
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| 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. |
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| Keywords: | White organic light-emitting diode Optical color filters Color mixture Multi-color display |
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