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

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

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
Light-emitting diodes(LEDs)based on perovskite semiconductor materials with tunable emission wavelength in visible light range as well as narrow linewidth are potential competitors among current light-emitting display technologies,but still suffer from severe instability driven by electric field.Here,we develop a stable,efficient and high-color purity hybrid LED with a tandem structure by combining the perovskite LED and the commercial organic LED technologies to accelerate the practical application of perovskites.Perovskite LED and organic LED with close photoluminescence peak are selected to maximize photon emission without photon reabsorption and to achieve the narrowed emission spectra.By designing an efficient interconnecting layer with p-type interface doping that provides good opto-electric coupling and reduces Joule heating,the resulting green emitting hybrid LED shows a narrow linewidth of around 30 nm,a peak luminance of over 176,000 cd m-2,a maximum external quantum efficiency of over 40％,and an operational half-lifetime of over 42,000 h.

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

展开 >

Key Laboratory of Advanced Display and System Applications of Ministry of Education,Shanghai University,Shanghai 200072,China

Institute of Nanoscience and Applications,Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen 518055,China

Department of Electrical and Electronic Engineering,The University of Hong Kong,Hong Kong,China

Department of Physics and Lakeside AR/VR Laboratory,International Joint Research Center for Optoelectronic and Engineering Research,Yunnan University,Kunming 650091,China

Experimental Center of Advanced Materials,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China

Graduate School of Organic Materials Science,Frontier Center for Organic Materials,Yamagata University,4-3-16 Jonan,Yonezawa 992-8510,Japan

展开 >

National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaProgram of Shanghai Academic/Technology Research LeaderShanghai S&T Committee Project

2022YFE02002002022YFB3606504621741046212203422XD142120020392001100

2024

10.1038/s41377-024-01500-7

光:科学与应用(英文版)
中国科学院长春光学精密机械与物理研究所

光:科学与应用(英文版)

CSTPCD
ISSN：2095-5545
年,卷(期)：2024.13(7)