【摘 要】
：
Efficient red polymer light-emitting diodes are fabricated with the single active layer from the blends of poly (Nvinylcarbazole) (PVK) in the presence of 30wt.
【机 构】
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Institute of Polymer Optoelectronic Materials and Devices, Key Laboratory of Special Functional Mate
论文部分内容阅读
Efficient red polymer light-emitting diodes are fabricated with the single active layer from the blends of poly (Nvinylcarbazole) (PVK) in the presence of 30wt.% electron-transporting compound 2-(4-biphenylyl)-5-(p-tertbutylphenyl)-1,3,4-oxadiazole (PBD) and europium complexes. The polyphenylene functionalized europium complex shows an enhanced electroluminescent efficiency due to the large site-isolation effect. For the polyphenylene functionalized europium complex, the maximum exteal quantum efficiency of 1.90% and luminous efficiency of 2.01 cd A-1 are achieved with emission peak at 612nm. The maximum brightness is more than 300cd m-2.
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