Efficient light-emitting diodes based on oriented perovskite nanoplatelets
Abstract
Solution-processed planar perovskite light-emitting diodes (LEDs) promise high-performance and cost-effective electroluminescent devices ideal for large-area display and lighting applications. Exploiting emission layers with high ratios of horizontal transition dipole moments (TDMs) is expected to boost the photon outcoupling of planar LEDs. However, LEDs based on anisotropic perovskite nanoemitters remain to be inefficient (external quantum efficiency, EQE <5%) due to the difficulties of simultaneously controlling the orientations of TDMs, achieving high photoluminescence quantum yields (PLQYs) and realizing charge balance in the films of assembled nanostructures. Here, we demonstrate efficient electroluminescence from an in situ grown perovskite film composed of a monolayer of face-on oriented nanoplatelets. The ratio of horizontal TDMs of the perovskite nanoplatelet film is ~84%, which leads to a light-outcoupling efficiency of ~31%, substantially higher than that of isotropic emitters (~23%). In consequence, LEDs with a peak EQE of 23.6% are achieved, representing highly efficient planar perovskite LEDs.
- Authors:
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- Zhejiang Univ., Hangzhou (China)
- Peking Univ., Beijing (China)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Nanjing Tech Univ. (China)
- Wuhan Univ. (China)
- Zhejiang Univ., Hangzhou (China); Zhejiang Univ., Wenzhou (China)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Key Research and Development Program of China; National Natural Science Foundation of China (NSFC); Fundamental Research Funds for the Central Universities; Natural Science Foundation of Zhejiang Province
- OSTI Identifier:
- 1854138
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Science Advances
- Additional Journal Information:
- Journal Volume: 7; Journal Issue: 41; Journal ID: ISSN 2375-2548
- Publisher:
- AAAS
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Cui, Jieyuan, Liu, Yang, Deng, Yunzhou, Lin, Chen, Fang, Zhishan, Xiang, Chensheng, Bai, Peng, Du, Kai, Zuo, Xiaobing, Wen, Kaichuan, Gong, Shaolong, He, Haiping, Ye, Zhizhen, Gao, Yunan, Tian, He, Zhao, Baodan, Wang, Jianpu, and Jin, Yizheng. Efficient light-emitting diodes based on oriented perovskite nanoplatelets. United States: N. p., 2021.
Web. doi:10.1126/sciadv.abg8458.
Cui, Jieyuan, Liu, Yang, Deng, Yunzhou, Lin, Chen, Fang, Zhishan, Xiang, Chensheng, Bai, Peng, Du, Kai, Zuo, Xiaobing, Wen, Kaichuan, Gong, Shaolong, He, Haiping, Ye, Zhizhen, Gao, Yunan, Tian, He, Zhao, Baodan, Wang, Jianpu, & Jin, Yizheng. Efficient light-emitting diodes based on oriented perovskite nanoplatelets. United States. https://doi.org/10.1126/sciadv.abg8458
Cui, Jieyuan, Liu, Yang, Deng, Yunzhou, Lin, Chen, Fang, Zhishan, Xiang, Chensheng, Bai, Peng, Du, Kai, Zuo, Xiaobing, Wen, Kaichuan, Gong, Shaolong, He, Haiping, Ye, Zhizhen, Gao, Yunan, Tian, He, Zhao, Baodan, Wang, Jianpu, and Jin, Yizheng. Fri .
"Efficient light-emitting diodes based on oriented perovskite nanoplatelets". United States. https://doi.org/10.1126/sciadv.abg8458. https://www.osti.gov/servlets/purl/1854138.
@article{osti_1854138,
title = {Efficient light-emitting diodes based on oriented perovskite nanoplatelets},
author = {Cui, Jieyuan and Liu, Yang and Deng, Yunzhou and Lin, Chen and Fang, Zhishan and Xiang, Chensheng and Bai, Peng and Du, Kai and Zuo, Xiaobing and Wen, Kaichuan and Gong, Shaolong and He, Haiping and Ye, Zhizhen and Gao, Yunan and Tian, He and Zhao, Baodan and Wang, Jianpu and Jin, Yizheng},
abstractNote = {Solution-processed planar perovskite light-emitting diodes (LEDs) promise high-performance and cost-effective electroluminescent devices ideal for large-area display and lighting applications. Exploiting emission layers with high ratios of horizontal transition dipole moments (TDMs) is expected to boost the photon outcoupling of planar LEDs. However, LEDs based on anisotropic perovskite nanoemitters remain to be inefficient (external quantum efficiency, EQE <5%) due to the difficulties of simultaneously controlling the orientations of TDMs, achieving high photoluminescence quantum yields (PLQYs) and realizing charge balance in the films of assembled nanostructures. Here, we demonstrate efficient electroluminescence from an in situ grown perovskite film composed of a monolayer of face-on oriented nanoplatelets. The ratio of horizontal TDMs of the perovskite nanoplatelet film is ~84%, which leads to a light-outcoupling efficiency of ~31%, substantially higher than that of isotropic emitters (~23%). In consequence, LEDs with a peak EQE of 23.6% are achieved, representing highly efficient planar perovskite LEDs.},
doi = {10.1126/sciadv.abg8458},
journal = {Science Advances},
number = 41,
volume = 7,
place = {United States},
year = {Fri Oct 08 00:00:00 EDT 2021},
month = {Fri Oct 08 00:00:00 EDT 2021}
}
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