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Design and performance study of high efficiency/ low efficiency roll-off/high CRI hybrid WOLEDs based on aggregation-induced emission materials as fluorescent emitters

机译:高效的设计和性能研究低效率碾轧/高CRI混合WOLEDs基于aggregation-induced发射材料作为荧光发射

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摘要

Generally, hybrid white organic light-emitting diodes (WOLEDs) are constructed with blue fluorophores and yellow or green/red phosphors, and the fluorophores and phosphors used have to be doped into proper hosts to avoid the exciton quenching caused by molecular aggregation, which brings difficulties in device structure design and fabrication. In this paper, we fabricated high efficiency/low efficiency roll-off/high CRI hybrid WOLEDs based on aggregation-induced emission (AIE) luminogens (AIEgens) with non-doping features as the fluorophore emitters. The resulting WOLEDs were constructed by two AIEgens that emit blue and green light, respectively, and a doped red phosphor, greatly simplifying the device structure. Encouragingly, the hybrid WOLEDs simultaneously achieved high efficiency (PEmax = 50.5 lm W1 , EQEmax = 20.5%), low efficiency roll-off (PE1000nit = 32.9 lm W1 , EQE1000nit = 18.9%), and high CRI (Z90). Our results indicate that AIEgens are promising material systems for manufacturing high-performance white OLEDs with a simple device structure.
机译:一般来说,混合白色有机发光二极管(WOLEDs)是由蓝色荧光团和黄色或绿色/红色荧光粉,和使用的荧光团和荧光粉被掺杂到适当的主机以避免激子淬火引起的分子聚合在设备结构设计带来困难和制造。效率高/低效率碾轧/高中国国际广播电台基于aggregation-induced混合WOLEDs(iea)发行luminogens (AIEgens with)non-doping特征荧光团发射器。结果WOLEDs由两个AIEgens排放蓝色和绿色的光,分别和掺杂红色荧光粉,很大简化了设备结构。混合WOLEDs同时实现高效率(PEmax = 50.5 lm W1, EQEmax = 20.5%),低效率碾轧(PE1000nit = 32.9 lm W1,EQE1000nit = 18.9%),高CRI (Z90)。结果表明,AIEgens是有前途的材料制造系统用一个简单的装置高性能白色有机发光两极管结构。

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