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Updated: May 6, 2026

Low-energy Cathodoluminescence for OxyNitride Phosphors
Published on: November 15, 2016
Multifunctional oxadiazole-based ultraviolet-emitting materials used as hosts for multicolor phosphorescence
Lizhi Chu1, Chenglin Ma1, Li Zhang1
1Key Laboratory of Rubber-Plastics of the Ministry of Education, School of Polymer Science & Engineering, Qingdao University of Science and Technology 53-Zhengzhou Road Qingdao 266042 P. R. China sfxue@qust.edu.cn.
Abstract:
Highly efficient ultraviolet materials and host materials for organic light-emitting diodes (OLEDs) have been gaining increasing attention in recent years. In this study, three donor-acceptor (D-A) molecules with different HLCT properties were designed and synthesized using oxadiazole as an electron acceptor. Not only does the molecule m-PIOXZ exhibit efficient ultraviolet electroluminescence, but it can also serve as the host material for high-efficiency phosphorescent OLEDs (PhOLEDs) with low roll-off. As a result, high external quantum efficiency (EQE) and long operational lifetimes are obtained in green, yellow and red emissive PhOLEDs, providing new insights for developing high-efficiency, low roll-off, and full-color OLEDs.
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