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Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence
Xing, Guichuan1; Wu, Bo2; Wu, Xiangyang3; Li, Mingjie2; Du, Bin4; Wei, Qi4; Guo, Jia4; Yeow, Edwin K. L.3; Sum, Tze Chien2; Huang, Wei4,5
2017-02-27
Source PublicationNATURE COMMUNICATIONS
ISSN2041-1723
Volume8
Abstract

The slow bimolecular recombination that drives three-dimensional lead-halide perovskites' outstanding photovoltaic performance is conversely a fundamental limitation for electroluminescence. Under electroluminescence working conditions with typical charge densities lower than 10(15) cm(-3), defect-states trapping in three-dimensional perovskites competes effectively with the bimolecular radiative recombination. Herein, we overcome this limitation using van-der-Waals-coupled Ruddlesden-Popper perovskite multi-quantum-wells. Injected charge carriers are rapidly localized from adjacent thin few layer (n <= 4) multi-quantum-wells to the thick (n >= 5) multi-quantum-wells with extremely high efficiency (over 85%) through quantum coupling. Light emission originates from excitonic recombination in the thick multi-quantum-wells at much higher decay rate and efficiency than bimolecular recombination in three-dimensional perovskites. These multi-quantum-wells retain the simple solution processability and high charge carrier mobility of two-dimensional lead-halide perovskites. Importantly, these Ruddlesden-Popper perovskites offer new functionalities unavailable in single phase constituents, permitting the transcendence of the slow bimolecular recombination bottleneck in lead-halide perovskites for efficient electroluminescence.

DOI10.1038/ncomms14558
URLView the original
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000394796300001
PublisherNATURE PUBLISHING GROUP
The Source to ArticleWOS
Fulltext Access
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Cited Times [WOS]:109   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionInstitute of Applied Physics and Materials Engineering
Affiliation1.Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR 999078, China
2.Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
3.Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
4.Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), 30 South Puzhu Road, Nanjing 211816, China
5.Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), SICAM, Nanjing University of Posts & Telecommunications
First Author AffilicationInstitute of Applied Physics and Materials Engineering
Recommended Citation
GB/T 7714
Xing, Guichuan,Wu, Bo,Wu, Xiangyang,et al. Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence[J]. NATURE COMMUNICATIONS,2017,8.
APA Xing, Guichuan.,Wu, Bo.,Wu, Xiangyang.,Li, Mingjie.,Du, Bin.,...&Huang, Wei.(2017).Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence.NATURE COMMUNICATIONS,8.
MLA Xing, Guichuan,et al."Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence".NATURE COMMUNICATIONS 8(2017).
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