1
|
Li H, Xiong L, Li J, Lu Y, Shen Z, Song D, Zhao S, Xu Z, Liang Z, Qiao B. Stability and Degradation in Lead Halide Perovskite Nanocrystals via Regulation of Lattice Strain. J Phys Chem Lett 2023:5481-5488. [PMID: 37290033 DOI: 10.1021/acs.jpclett.3c01099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
It is still quite challenging to achieve high-performance and stable blue perovskite materials due to their instability and degradation. The lattice strain provides an important pathway to investigate the degradation process. In this article, the lattice strain in perovskite nanocrystals was regulated by the ratio of Cs+, EA+, and Rb+ cations with different sizes. Their electrical structure, formation energy, and ion migration activation energy were calculated with the density functional theory (DFT) method. The luminescence properties and stability of blue lead bromide perovskite nanocrystals were analyzed with spectra regulation from 516 to 472 nm. It was demonstrated that the lattice strain plays an important role in the luminescence performance and degradation process of perovskite materials. The study provides the positive correlation between lattice strain and degradation as well as luminescence properties in lead halide perovskite materials, which is of great importance in uncovering their degradation mechanism and developing stable and high-performance blue perovskite materials.
Collapse
Affiliation(s)
- Huitian Li
- Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Liuyi Xiong
- Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Jinwei Li
- Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Yao Lu
- Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Zhaohui Shen
- Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Dandan Song
- Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Suling Zhao
- Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Zheng Xu
- Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Zhiqin Liang
- Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
| | - Bo Qiao
- Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
| |
Collapse
|