Water-induced MAPbBr<sub>3</sub>@PbBr(OH) with enhanced luminescence and stability

Kai-Kai Liu; Qian Liu; Dong-Wen Yang; Ya-Chuan Liang; Lai-Zhi Sui; Jian-Yong Wei; Guo-Wei Xue; Wen-Bo Zhao; Xue-Ying Wu; Lin Dong; Chong-Xin Shan

doi:10.1038/s41377-020-0283-2

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Water-induced MAPbBr₃@PbBr(OH) with enhanced luminescence and stability

Article

- Water-induced MAPbBr₃@PbBr(OH) with enhanced luminescence and stability
- Light: Science & Applications Vol. 9, Issue 2, Pages: 394-404(2020)
- Affiliations：
  
  1.Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
  2.State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
- Author bio：
  
  Lin Dong (ldong@zzu.edu.cn)
  Chong-Xin Shan (cxshan@zzu.edu.cn)
- Funds：
- DOI：10.1038/s41377-020-0283-2
  CLC：
- Published：2020，
  
  Published Online：17 March 2020，
  
  Received：25 October 2019，
  
  Revised：08 February 2020，
  
  Accepted：04 March 2020
- Accepted：
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Liu, K. K. et al. Water-induced MAPbBr₃@PbBr(OH) with enhanced luminescence and stability. Light: Science & Applications, 9, 394-404 (2020).
DOI：

Liu, K. K. et al. Water-induced MAPbBr₃@PbBr(OH) with enhanced luminescence and stability. Light: Science & Applications, 9, 394-404 (2020). DOI： 10.1038/s41377-020-0283-2.

摘要

Abstract

Poor stability has long been one of the key issues that hinder the practical applications of lead-based halide perovskites. In this paper

the photoluminescence (PL) quantum yield (QY) of bromide-based perovskites can be increased from 2.5% to 71.54% by introducing water

and the PL QY of a sample in aqueous solution decreases minimally over 1 year. The enhanced stability and PL QY can be attributed to the water-induced methylamino lead bromide perovskite (MAPbBr

)@PbBr(OH). We note that this strategy is universal to MAPbBr

formamidine lead bromide perovskite (FAPbBr

)

inorganic lead bromide perovskite (CsPbBr

)

etc. Light-emitting devices (LEDs) are fabricated by using the as-prepared perovskite as phosphors on a 365 nm UV chip. The luminance intensity of the LED is 9549 cd/m

when the driven current is 200 mA

and blemishes on the surface of glass are clearly observed under the illumination of the LEDs. This work provides a new strategy for highly stable and efficient perovskites.

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Water-induced MAPbBr3@PbBr(OH) with enhanced luminescence and stability

DOI：10.1038/s41377-020-0283-2

摘要

Abstract

关键词

Keywords

references

Water-induced MAPbBr₃@PbBr(OH) with enhanced luminescence and stability