Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence
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 1015 cm−3, defect-state...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2017
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| Online Access: | https://hdl.handle.net/10356/83913 http://hdl.handle.net/10220/42862 |
| _version_ | 1826111295465717760 |
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| author | Huang, Wei Xing, Guichuan Wu, Bo Wu, Xiangyang Li, Mingjie Du, Bin Wei, Qi Guo, Jia Yeow, Edwin K. L. Sum, Tze Chien |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Huang, Wei Xing, Guichuan Wu, Bo Wu, Xiangyang Li, Mingjie Du, Bin Wei, Qi Guo, Jia Yeow, Edwin K. L. Sum, Tze Chien |
| author_sort | Huang, Wei |
| collection | NTU |
| description | 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 1015 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. |
| first_indexed | 2024-10-01T02:48:21Z |
| format | Journal Article |
| id | ntu-10356/83913 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:48:21Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/839132023-02-28T19:38:56Z Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence Huang, Wei Xing, Guichuan Wu, Bo Wu, Xiangyang Li, Mingjie Du, Bin Wei, Qi Guo, Jia Yeow, Edwin K. L. Sum, Tze Chien School of Physical and Mathematical Sciences Materials for Devices Optical Physics 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 1015 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. MOE (Min. of Education, S’pore) Published version 2017-07-14T04:25:29Z 2019-12-06T15:34:29Z 2017-07-14T04:25:29Z 2019-12-06T15:34:29Z 2017 Journal Article Xing, G., Wu, B., Wu, X., Li, M., Du, B., Wei, Q., et al. (2017). Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence. Nature Communications, 8, 14558-. 2041-1723 https://hdl.handle.net/10356/83913 http://hdl.handle.net/10220/42862 10.1038/ncomms14558 en Nature Communications © 2017 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ 9 p. application/pdf |
| spellingShingle | Materials for Devices Optical Physics Huang, Wei Xing, Guichuan Wu, Bo Wu, Xiangyang Li, Mingjie Du, Bin Wei, Qi Guo, Jia Yeow, Edwin K. L. Sum, Tze Chien Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence |
| title | Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence |
| title_full | Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence |
| title_fullStr | Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence |
| title_full_unstemmed | Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence |
| title_short | Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence |
| title_sort | transcending the slow bimolecular recombination in lead halide perovskites for electroluminescence |
| topic | Materials for Devices Optical Physics |
| url | https://hdl.handle.net/10356/83913 http://hdl.handle.net/10220/42862 |
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