Efficient sky-blue perovskite light-emitting diodes via photoluminescence enhancement
Abstract
The efficiencies of green and red perovskite light-emitting diodes (PeLEDs) have been increased close to their theoretical upper limit, while the efficiency of blue PeLEDs is lagging far behind. Here we report enhancing the efficiency of sky-blue PeLEDs by overcoming a major hurdle of low photoluminescence quantum efficiency in wide-bandgap perovskites. Blending phenylethylammonium chloride into cesium lead halide perovskites yields a mixture of two-dimensional and three-dimensional perovskites, which enhances photoluminescence quantum efficiency from 1.1% to 19.8%. Adding yttrium (III) chloride into the mixture further enhances photoluminescence quantum efficiency to 49.7%. Yttrium is found to incorporate into the three-dimensional perovskite grain, while it is still rich at grain boundaries and surfaces. The yttrium on grain surface increases the bandgap of grain shell, which confines the charge carriers inside grains for efficient radiative recombination. Record efficiencies of 11.0% and 4.8% were obtained in sky-blue and blue PeLEDs, respectively.
- Authors:
-
[3];
[5];
[5];
[7];
[5]
- Univ. of North Carolina, Chapel Hill, NC (United States). Dept. of Applied Physical Sciences
- Univ. of Toledo, OH (United States). Dept. of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization
- Xi’an Jiaotong University, Xi’an (China). Electronic Materials Research Laboratory, Key Laboratory of Education Ministry, International Center for Dielectric Research
- Univ. of North Carolina, Chapel Hill, NC (United States). Dept. of Chemistry
- Univ. of North Carolina, Chapel Hill, NC (United States). Dept. of Applied Physical Sciences
- Univ. of North Carolina, Chapel Hill, NC (United States). Dept. of Chemistry
- Univ. of Toledo, OH (United States). Dept. of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization
- Publication Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Hybrid Organic-Inorganic Semiconductors for Energy (CHOISE)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1624224
- Grant/Contract Number:
- AC36-08GO28308
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- Science & Technology - Other Topics
Citation Formats
Wang, Qi, Wang, Xiaoming, Yang, Zhi, Zhou, Ninghao, Deng, Yehao, Zhao, Jingjing, Xiao, Xun, Rudd, Peter, Moran, Andrew, Yan, Yanfa, and Huang, Jinsong. Efficient sky-blue perovskite light-emitting diodes via photoluminescence enhancement. United States: N. p., 2019.
Web. doi:10.1038/s41467-019-13580-w.
Wang, Qi, Wang, Xiaoming, Yang, Zhi, Zhou, Ninghao, Deng, Yehao, Zhao, Jingjing, Xiao, Xun, Rudd, Peter, Moran, Andrew, Yan, Yanfa, & Huang, Jinsong. Efficient sky-blue perovskite light-emitting diodes via photoluminescence enhancement. United States. https://doi.org/10.1038/s41467-019-13580-w
Wang, Qi, Wang, Xiaoming, Yang, Zhi, Zhou, Ninghao, Deng, Yehao, Zhao, Jingjing, Xiao, Xun, Rudd, Peter, Moran, Andrew, Yan, Yanfa, and Huang, Jinsong. Tue .
"Efficient sky-blue perovskite light-emitting diodes via photoluminescence enhancement". United States. https://doi.org/10.1038/s41467-019-13580-w. https://www.osti.gov/servlets/purl/1624224.
@article{osti_1624224,
title = {Efficient sky-blue perovskite light-emitting diodes via photoluminescence enhancement},
author = {Wang, Qi and Wang, Xiaoming and Yang, Zhi and Zhou, Ninghao and Deng, Yehao and Zhao, Jingjing and Xiao, Xun and Rudd, Peter and Moran, Andrew and Yan, Yanfa and Huang, Jinsong},
abstractNote = {The efficiencies of green and red perovskite light-emitting diodes (PeLEDs) have been increased close to their theoretical upper limit, while the efficiency of blue PeLEDs is lagging far behind. Here we report enhancing the efficiency of sky-blue PeLEDs by overcoming a major hurdle of low photoluminescence quantum efficiency in wide-bandgap perovskites. Blending phenylethylammonium chloride into cesium lead halide perovskites yields a mixture of two-dimensional and three-dimensional perovskites, which enhances photoluminescence quantum efficiency from 1.1% to 19.8%. Adding yttrium (III) chloride into the mixture further enhances photoluminescence quantum efficiency to 49.7%. Yttrium is found to incorporate into the three-dimensional perovskite grain, while it is still rich at grain boundaries and surfaces. The yttrium on grain surface increases the bandgap of grain shell, which confines the charge carriers inside grains for efficient radiative recombination. Record efficiencies of 11.0% and 4.8% were obtained in sky-blue and blue PeLEDs, respectively.},
doi = {10.1038/s41467-019-13580-w},
journal = {Nature Communications},
number = 1,
volume = 10,
place = {United States},
year = {Tue Dec 10 00:00:00 EST 2019},
month = {Tue Dec 10 00:00:00 EST 2019}
}
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