Hollow metal halide perovskite nanocrystals with efficient blue emissions

Michael Worku; Yu Tian; Chenkun Zhou; Haoran Lin; Maya Chaaban; Liang Jin Xu; Qingquan He; Drake Beery; Yan Zhou; Xinsong Lin; Yi Feng Su; Yan Xin; Biwu Ma

doi:10.1126/sciadv.aaz5961

Hollow metal halide perovskite nanocrystals with efficient blue emissions

Michael Worku, Yu Tian, Chenkun Zhou, Haoran Lin, Maya Chaaban, Liang Jin Xu, Qingquan He, Drake Beery, Yan Zhou, Xinsong Lin, Yi Feng Su, Yan Xin, Biwu Ma

Corrosion Science & Technology

Research output: Contribution to journal › Article › peer-review

74 Scopus citations

Abstract

Metal halide perovskite nanocrystals (NCs) have emerged as new-generation light-emitting materials with narrow emissions and high photoluminescence quantum efficiencies (PLQEs). Various types of perovskite NCs, e.g., platelets, wires, and cubes, have been discovered to exhibit tunable emissions across the whole visible spectrum. Despite remarkable advances in the field of perovskite NCs, many nanostructures in inorganic NCs have not yet been realized in metal halide perovskites, and producing highly efficient blue-emitting perovskite NCs remains challenging and of great interest. Here, we report the discovery of highly efficient blue-emitting cesium lead bromide (CsPbBr₃) perovskite hollow NCs. By facile solution processing of CsPbBr₃ precursor solution containing ethylenediammonium bromide and sodium bromide, in situ formation of hollow CsPbBr₃ NCs with controlled particle and pore sizes is realized. Synthetic control of hollow nanostructures with quantum confinement effect results in color tuning of CsPbBr₃ NCs from green to blue, with high PLQEs of up to 81%.

Original language	English
Article number	aaz5961
Journal	Science Advances
Volume	6
Issue number	17
DOIs	https://doi.org/10.1126/sciadv.aaz5961
State	Published - Apr 2020

Funding

We thank E. Lochner for help with XPS measurements and helpful discussions. We acknowledge the support from the National Science Foundation (DMR-1709116 and ECCS-1912911), the Air Force Office of Scientific Research (AFOSR) (17RT0906), and the FSU Office of Research. TEM work was performed at the National High Magnetic Field Laboratory, which is supported by National Science Foundation Cooperative agreement no. DMR-1644779 and the State of Florida.

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title = "Hollow metal halide perovskite nanocrystals with efficient blue emissions",

abstract = "Metal halide perovskite nanocrystals (NCs) have emerged as new-generation light-emitting materials with narrow emissions and high photoluminescence quantum efficiencies (PLQEs). Various types of perovskite NCs, e.g., platelets, wires, and cubes, have been discovered to exhibit tunable emissions across the whole visible spectrum. Despite remarkable advances in the field of perovskite NCs, many nanostructures in inorganic NCs have not yet been realized in metal halide perovskites, and producing highly efficient blue-emitting perovskite NCs remains challenging and of great interest. Here, we report the discovery of highly efficient blue-emitting cesium lead bromide (CsPbBr3) perovskite hollow NCs. By facile solution processing of CsPbBr3 precursor solution containing ethylenediammonium bromide and sodium bromide, in situ formation of hollow CsPbBr3 NCs with controlled particle and pore sizes is realized. Synthetic control of hollow nanostructures with quantum confinement effect results in color tuning of CsPbBr3 NCs from green to blue, with high PLQEs of up to 81\%.",

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AU - Worku, Michael

AU - Tian, Yu

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AU - Chaaban, Maya

AU - Xu, Liang Jin

AU - He, Qingquan

AU - Beery, Drake

AU - Zhou, Yan

AU - Lin, Xinsong

AU - Su, Yi Feng

AU - Xin, Yan

AU - Ma, Biwu

N1 - Publisher Copyright: © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Y1 - 2020/4

N2 - Metal halide perovskite nanocrystals (NCs) have emerged as new-generation light-emitting materials with narrow emissions and high photoluminescence quantum efficiencies (PLQEs). Various types of perovskite NCs, e.g., platelets, wires, and cubes, have been discovered to exhibit tunable emissions across the whole visible spectrum. Despite remarkable advances in the field of perovskite NCs, many nanostructures in inorganic NCs have not yet been realized in metal halide perovskites, and producing highly efficient blue-emitting perovskite NCs remains challenging and of great interest. Here, we report the discovery of highly efficient blue-emitting cesium lead bromide (CsPbBr3) perovskite hollow NCs. By facile solution processing of CsPbBr3 precursor solution containing ethylenediammonium bromide and sodium bromide, in situ formation of hollow CsPbBr3 NCs with controlled particle and pore sizes is realized. Synthetic control of hollow nanostructures with quantum confinement effect results in color tuning of CsPbBr3 NCs from green to blue, with high PLQEs of up to 81%.

AB - Metal halide perovskite nanocrystals (NCs) have emerged as new-generation light-emitting materials with narrow emissions and high photoluminescence quantum efficiencies (PLQEs). Various types of perovskite NCs, e.g., platelets, wires, and cubes, have been discovered to exhibit tunable emissions across the whole visible spectrum. Despite remarkable advances in the field of perovskite NCs, many nanostructures in inorganic NCs have not yet been realized in metal halide perovskites, and producing highly efficient blue-emitting perovskite NCs remains challenging and of great interest. Here, we report the discovery of highly efficient blue-emitting cesium lead bromide (CsPbBr3) perovskite hollow NCs. By facile solution processing of CsPbBr3 precursor solution containing ethylenediammonium bromide and sodium bromide, in situ formation of hollow CsPbBr3 NCs with controlled particle and pore sizes is realized. Synthetic control of hollow nanostructures with quantum confinement effect results in color tuning of CsPbBr3 NCs from green to blue, with high PLQEs of up to 81%.

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Hollow metal halide perovskite nanocrystals with efficient blue emissions

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