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将聚合物材料作为空穴传输材料 ,以有机小分子蓝光染料 1 ,1 ,4 ,4 四苯基丁二烯 ,绿光染料 8 羟基喹啉铝和黄光染料 5,6,1 1 ,1 2 四苯基四苯并作为产生白光所需要的三种色源 ,制备了有机 /聚合物白光电致发光器件。这种器件的设计使聚合物的热电稳定性好的优点与有机小分子材料荧光效率高的优点相结合 ,拓宽了材料的选择范围 ,更有利于选择能带匹配的材料体系。器件的开启电压为 2 5V左右 ,发光效率在 9V时达到最大 1 2 4lm/W ,该电压下的亮度达到 1 60 0cd/m2 ,器件的最大亮度超过 2 0 0 0 0cd/m2 ( 1 8V) ,器件最佳色度为 ( 0 3 1 9,0 3 3 2 ) ,这在目前国际上有报道的有机 /聚合物白光发光器件中居领先水平。
The polymer material as a hole transport material, organic small molecule blue dye 1, 1, 4, 4 tetraphenyl butadiene, green dye 8 hydroxyquinoline aluminum and yellow dye 5,6,1 1, 1 2 tetraphenyltetraphenyl as the three kinds of color source needed to produce white light, prepared organic / polymer white light electroluminescent devices. The design of this device combines the advantages of good thermal and electrical stability of polymer with the advantages of high fluorescence efficiency of organic small molecule materials, broadens the selection range of materials and is more conducive to the selection of energy-matching material system. The turn-on voltage of the device is about 2 5V, and the luminous efficiency reaches a maximum of 1204 lm / W at 9V, and the brightness under this voltage reaches 1 60 0 cd / m2. The maximum brightness of the device is over 2000 cd / m2 (18V) , The best chromaticity of the device is (0 3 1 9,0 3 3 2), which is leading in the currently reported organic / polymer white light emitting devices.