Guidelines for Designing Water-Stable Hybrid Lead Bromide Perovskites with Broad Emission

Chen, Congcong1; Zhang, Luming2; Ji, Xiaoqing1,3; Zhang, Xuanyu; Gong, Yaping4; Chen, Rui3; Mao, Lingling1

2023-10-01

10.1002/adom.202301966

ADVANCED OPTICAL MATERIALS   Impact Factor & Quartile

2195-1071

["Hybrid lead halide perovskites have generated increasing attention for their high performance in optoelectronic applications. One main drawback of these materials is the sensitivity to moisture, which contributes heavily to the ultimate decomposition. Here, this study takes advantage of the reported representative white-light emitting lead bromide perovskite and three-dimensional (3D) perovskite as the subject of water-stability study. It is reported here that other than observed phase transformation in one case, the majority of these perovskites break down in water rapidly, precipitating out as an inorganic salt compound Pb3Br6[H2O]center dot H2O. As these materials are studied in detail, it is discovered that better coverage of the hydrophobic organic cation enhances the water stability. Taking this idea further, it is demonstrated here that five new one-dimensional (1D) lead bromide compounds have superior water stability, where the longest stability when completely immersed in water is more than one year and counting. This work provides a new mechanism regarding the degradation process when encountering moisture and general guidelines to increase the water stability for the lead bromide hybrids.","The degradation pathway and product in water of a series of representative lead bromide perovskites is revealed. Learning from this process where high organic cation coverage is required for better water stability, a series of lead bromide hexagonal perovskites with high water stability have been further demonstrated.image"]

halide perovskites phase transformation photoluminescence water stability

SCI

English

First ; Corresponding

This work was supported by the National Natural Science Foundation of China (NSFC) under Grant 22275077, the Stable Support Plan Program of Shenzhen Natural Science Fund (Program Contract 20220814233319001), and the Startup Fund of SUSTech. The authors are[22275077] ; National Natural Science Foundation of China (NSFC)[20220814233319001]

Materials Science ; Optics

Materials Science, Multidisciplinary ; Optics

WOS:001088167800001

WILEY-V C H VERLAG GMBH

Web of Science

1.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China
2.Southern Univ Sci & Technol, Sch Life Sci, Dept Biol, Shenzhen 518055, Guangdong, Peoples R China
3.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Guangdong, Peoples R China
4.Sun Yat Sen Univ, Sch Chem, MOE Key Lab Bioinorgan & Synthet Chem, Guangzhou 510275, Guangdong, Peoples R China

Chen, Congcong,Zhang, Luming,Ji, Xiaoqing,et al. Guidelines for Designing Water-Stable Hybrid Lead Bromide Perovskites with Broad Emission[J]. ADVANCED OPTICAL MATERIALS,2023.

Chen, Congcong.,Zhang, Luming.,Ji, Xiaoqing.,Zhang, Xuanyu.,Gong, Yaping.,...&Mao, Lingling.(2023).Guidelines for Designing Water-Stable Hybrid Lead Bromide Perovskites with Broad Emission.ADVANCED OPTICAL MATERIALS.

Chen, Congcong,et al."Guidelines for Designing Water-Stable Hybrid Lead Bromide Perovskites with Broad Emission".ADVANCED OPTICAL MATERIALS (2023).