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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >White Light Emitting Electrophosphorescent Devices with Solution Processed Emission Layer
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White Light Emitting Electrophosphorescent Devices with Solution Processed Emission Layer

机译：具有溶液处理的发射层的白光发射电致磷光器件

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摘要

White light emitting diodes with high efficiency and brightness have been fabricated using phosphorescent materials by spin coating an emission layer. The emission layer consisted of sky blue and orange light emitting materials based on indium complexes, which were dissolved in toluene solvent with 4,4'-bis(carbazoyl-9-yl)biphenyl (CBP) as a host and polystyrene as a binder. The introduction of polystyrene binder resulted in not only good film forming properties but also better device performance than that of poly(vinyl carbazole) conventionally used as a host material. The device structure was ITO/ PEDT:PSS/emission layer/BAlq/LiF/Al. The color of the devices varied according to the composition of light emitting materials and the device having the closest to white emission showed CIE coordinates of (0.33,0.39) with an external quantum efficiency and a current efficiency of 6.1% and 13cd/A, respectively, at 100cd/m~2.
机译：使用磷光材料通过旋涂发光层来制造具有高效率和亮度的白光发光二极管。发射层由基于铟配合物的天蓝色和橙色发光材料组成，将其溶解在甲苯溶剂中，其中4,4'-双（咔唑基-9-基）联苯（CBP）作为主体，聚苯乙烯作为粘合剂。与常规用作基质材料的聚（乙烯基咔唑）相比，引入聚苯乙烯粘合剂不仅具有良好的成膜性能，而且具有更好的器件性能。器件结构为ITO / PEDT：PSS /发射层/ BAlq / LiF / Al。器件的颜色根据发光材料的组成而变化，并且具有最接近白光发射的器件的CIE坐标为（0.33,0.39），外部量子效率和电流效率分别为6.1％和13cd / A。 ，在100cd / m〜2。

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