Engineering and Technology

High-efficiency crystalline white organic light-emitting diodes

Y. Liu, F. Zhu, et al.

Discover the groundbreaking advances in high-performance crystalline white organic light-emitting diodes (C-WOLEDs) developed using an innovative crystalline host matrix and nanoaggregate structure. With an astounding external quantum efficiency of 12.8%, this research by Yijun Liu, Feng Zhu, Yue Wang, and Donghang Yan promises to revolutionize the field of organic light-emitting technologies.

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Abstract

This paper reports the development of high-performance crystalline white organic light-emitting diodes (C-WOLEDs) using a crystalline host matrix (CHM) with embedded nanoaggregates (NA) structure. A thermally activated delayed fluorescence (TADF) material and orange phosphorescent dopants were employed. The resulting CHM-TADFNA-D WOLED achieved a remarkable external quantum efficiency (EQE) of 12.8%, the highest reported for C-WOLEDs. The device's high efficiency is attributed to fast exciton formation, a well-designed energy transfer process, and low Joule-heat loss.

Publisher

Light: Science & Applications

Published On

Authors

Yijun Liu, Feng Zhu, Yue Wang, Donghang Yan

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