Engineering and Technology

Efficient and stable hybrid perovskite-organic light-emitting diodes with external quantum efficiency exceeding 40 per cent

L. Kong, Y. Luo, et al.

Discover a breakthrough in hybrid lighting technology with the innovative combination of perovskite and organic LEDs. Achieving an incredible peak luminance of over 176,000 cd m⁻² and a remarkable external quantum efficiency exceeding 40%, this research showcases pioneering advancements in opto-electric coupling and longevity, presented by leading researchers Lingmei Kong, Yun Luo, Qianqian Wu, and their colleagues.

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Abstract

This paper presents a stable and efficient hybrid light-emitting diode (LED) with a tandem structure, combining perovskite and organic LED technologies. The hybrid LED achieves a narrow linewidth of around 30 nm, peak luminance exceeding 176,000 cd m⁻², a maximum external quantum efficiency (EQE) over 40%, and an operational half-lifetime of over 42,000 hours. This is achieved by using a carefully designed interconnecting layer with p-type interface doping to optimize opto-electric coupling and reduce Joule heating.

Publisher

Light: Science & Applications

Published On

Apr 16, 2024

Authors

Lingmei Kong, Yun Luo, Qianqian Wu, Xiangtian Xiao, Yuanzhi Wang, Guo Chen, Jianhua Zhang, Kai Wang, Wallace C. H. Choy, Yong-Biao Zhao, Hongbo Li, Takayuki Chiba, Junji Kido, Xuyong Yang

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