White polymer light-emitting diodes based on star-shaped polymers with an orange dendritic phosphorescent core.
White polymer light-emitting diodes based on star-shaped polymers with an orange dendritic phosphorescent core.
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DOI：
10.1002/marc.201400420
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发表时间：
2014-12
影响因子：
4.6
通讯作者：
Minrong Zhu;Yanhu Li;Xiaosong Cao;Bei Jiang;Hongbin Wu;J. Qin;Yong Cao;Chuluo Yang
中科院分区：
文献类型：
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作者：
Minrong Zhu;Yanhu Li;Xiaosong Cao;Bei Jiang;Hongbin Wu;J. Qin;Yong Cao;Chuluo Yang
以三苯胺基铱（III）树突状配合物为橙色发光核心，聚（9,9-二己基芴）（PFH）链为蓝色发光臂的一系列新型星形聚合物，朝着白色聚合物发光二极管（WPLEDs）方向发展。通过微调橙色荧光粉的含量，实现了从蓝色骨架向橙色核心的部分能量转移和电荷捕获，从而实现白光发射。ITO（氧化铟锡）/聚（3,4-乙烯二氧噻吩）：聚（苯乙烯磺酸盐）(PEDOT:PSS)/聚合物/CsF/Al结构的单层wpled的最大电流效率为1.69 cd a (-1)， CIE坐标为（0.35,0.33），非常接近纯白光点（0.33,0.33）。据我们所知，这是第一个同时由荧光和磷光组成的星形白色单聚合物的报告。
A series of new star-shaped polymers with a triphenylamine-based iridium(III) dendritic complex as the orange-emitting core and poly(9,9-dihexylfluorene) (PFH) chains as the blue-emitting arms is developed towards white polymer light-emitting diodes (WPLEDs). By fine-tuning the content of the orange phosphor, partial energy transfer and charge trapping from the blue backbone to the orange core is realized to achieve white light emission. Single-layer WPLEDs with the configuration of ITO (indium-tin oxide)/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/polymer/CsF/Al exhibit a maximum current efficiency of 1.69 cd A(-1) and CIE coordinates of (0.35, 0.33), which is very close to the pure white-light point of (0.33, 0.33). To the best of our knowledge, this is the first report on star-shaped white-emitting single polymers that simultaneously consist of fluorescent and phosphorescent species.