有机发光二极管
磷光
磷光有机发光二极管
化学
光电子学
铱
材料科学
量子效率
作者
Fangfang Wang,Youtian Tao,Wei Huang
出处
期刊:Acta Chimica Sinica
[Shaghai Institute of Organic Chemistry]
日期:2015-01-01
卷期号:73 (1): 9-
被引量:15
摘要
Phosphorescent organic light-emitting diodes (PHOLEDs) show a bright future for flat-panel displays and solid- state lighting due to higher quantum efficiencies compared with traditional fluorescent OLEDs. This review focuses on small-molecular organic host materials for blue PHOLEDs with external quantum efficiency higher than 20%. Hole transport-type, electron transport-type and bipolar transport hosts are introduced according to their charge transporting prop- erties. Their molecular structures and physical properties such as triplet energy, HOMO/LUMO energy levels and thermal stabilities, as well as device performances of host materials for blue and deep-blue PHOLEDs are comprehensively demon- strated. It is expected to provide reference value for the exploitation of new organic host materials and the commercialization of OLEDs.
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