Recent Progress of Host Materials for Highly Efficient Blue Phosphorescent OLEDs
Received date: 2014-10-16
Online published: 2014-11-28
Supported by
Project supported by the Youth Project 973 (No. 2014CB648300), the National Natural Science Foundation of China (No. 61474062) and the Natural Science Foundation of Jiangsu Province Youth Project (No. BK20130919).
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 properties. 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 demonstrated. It is expected to provide reference value for the exploitation of new organic host materials and the commercialization of OLEDs.
Wang Fangfang , Tao Youtian , Huang Wei . Recent Progress of Host Materials for Highly Efficient Blue Phosphorescent OLEDs[J]. Acta Chimica Sinica, 2015 , 73(1) : 9 -22 . DOI: 10.6023/A14100716
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