Hou Qing-Chuan, Wu Xiao-Ming, Hua Yu-Lin, Qi Qing-Jin, Li Lan, Yin Shou-Gen
School of Materials Science & Engineering, Tianjin University of Technology, Key Laboratory of Photoelectric Display Materials & Devices, Ministry of Education, Tianjin 300384, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2010 Jun;30(6):1460-3.
The authors report a novel white organic light-emitting device (WOLED), which uses a strategy of exciting organic/ inorganic color conversion film with a blue organic light-emitting diode (OLED). The luminescent layer of the blue OLED was prepared by use of CBP host blended with a blue highly fluorescent dye N-BDAVBi. The organic/inorganic color conversion film was prepared by dispersing a mixture of red pigment VQ-D25 and YAG : Ce3+ phosphor in PMMA. The authors have achieved a novel WOLED with the high color stability by optimizing the thickness and fluorescent pigment concentration of the color conversion film. When the driving voltage varied between 6 and 14 V, the color coordinates (CIE) varied slightly from (0.354, 0.304) to (0.357, 0.312) and the maximum current efficiency is about 5.8 cd x A(-1) (4.35 mA x cm(-2)), the maximum brightness is 16 800 cd x m(-2) at the operating voltage of 14 V.
作者报道了一种新型白色有机发光器件（WOLED），它采用了用蓝色有机发光二极管（OLED）激发有机/无机颜色转换膜的策略。蓝色OLED的发光层是通过使用与蓝色高荧光染料N-BDAVBi混合的CBP主体制备的。有机/无机颜色转换膜是通过将红色颜料VQ-D25和YAG:Ce3+荧光粉的混合物分散在聚甲基丙烯酸甲酯（PMMA）中制备的。作者通过优化颜色转换膜的厚度和荧光颜料浓度，实现了一种具有高颜色稳定性的新型WOLED。当驱动电压在6至14V之间变化时，色坐标（CIE）从（0.354,0.304）略微变化到（0.357,0.312），最大电流效率约为5.8 cd·A-1（4.35 mA·cm-2），在14V的工作电压下最大亮度为16800 cd·m-2。
