1.Institute of Photoelectronic Thin Film Devices and Technology, Solar Energy Conversion Center, Nankai University, Tianjin, 300350, China
2.Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Nankai University, Tianjin, 300350, China
3.Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education, Nankai University, Tianjin, 300350, China
4.Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (IAIR), University of Jinan, Jinan, 250022, Shandong, China
5.Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, Tianjin University, Tianjin, 300354, China
6.Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin, 300071, China
7.School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
Xiyan Li (xiyan.li@nankai.edu.cn)
纸质出版日期:2023-4-30,
网络出版日期:2023-3-20,
收稿日期:2022-10-6,
修回日期:2023-2-16,
录用日期:2023-2-20
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A universal hydrochloric acid-assistant powder-to-powder strategy for quick and mass preparation of lead-free perovskite microcrystals[J]. 光:科学与应用, 2023,12(4):613-624.
Yang, H. X.et al. A universal hydrochloric acid-assistant powder-to-powder strategy for quick and mass preparation of lead-free perovskite microcrystals.Light: Science & Applications,12, 613-624 (2023).
A universal hydrochloric acid-assistant powder-to-powder strategy for quick and mass preparation of lead-free perovskite microcrystals[J]. 光:科学与应用, 2023,12(4):613-624. DOI: 10.1038/s41377-023-01117-2.
Yang, H. X.et al. A universal hydrochloric acid-assistant powder-to-powder strategy for quick and mass preparation of lead-free perovskite microcrystals.Light: Science & Applications,12, 613-624 (2023). DOI: 10.1038/s41377-023-01117-2.
Lead-free halide perovskite materials possess low toxicity
broadband luminescence and robust stability compared with conventional lead-based perovskites
thus holding great promise for eyes-friendly white light LEDs. However
the traditionally used preparation methods with a long period and limited product yield have curtailed the commercialization of these materials. Here we introduce a universal hydrochloric acid-assistant powder-to-powder strategy which can accomplish the goals of thermal-
pressure-free
eco-friendliness
short time
low cost and high product yield
simultaneously. The obtained Cs
2
Na
0.9
Ag
0.1
In
0.95
Bi
0.05
Cl
6
microcrystals exhibit bright self-trapped excitons emission with quantum yield of (98.3 ± 3.8)%
which could retain (90.5 ± 1.3)% and (96.8 ± 0.8)% after continuous heating or ultraviolet-irradiation for 1000 h
respectively. The phosphor converted-LED exhibited near-unity conversion efficiency from ultraviolet chip to self-trapped excitons emission at ~200 mA. Various ions doping (such as Cs
2
Na
0.9
Ag
0.1
InCl
6
: Ln
3+
) and other derived lead-free perovskite materials (such as Cs
2
ZrCl
6
and Cs
4
MnBi
2
Cl
12
) with high luminous performance are all realized by our proposed strategy
which has shown excellent availability towards commercialization.
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