@article{ZHANG2026, 
author = {Yinglong ZHANG and Shufan JIA and Ning DAI and Saqib RAHMAN},
title = {Structure and Optical Properties of Inorganic Metal Halide Perovskite CsMnCl3 under High Pressure},
year = {2026},
journal = {Chinese Journal of High Pressure Physics},
volume = {40},
number = {6},
keywords = {high pressure, photoluminescence (PL) enhancement, Mn-based halide perovskites, phase transition, band gap},
url = {https://www.sciopen.com/article/10.11858/gywlxb.20261014},
doi = {10.11858/gywlxb.20261014},
abstract = {Manganese-based metal halide perovskites have attracted significant attention due to their excellent photoelectric conversion efficiency and low-cost preparation advantages. Among them, cesium manganese chloride (CsMnCl3) has emerged as a promising candidate for spintronics and magnetic applications. Understanding the structure-property relationship of CsMnCl3, particularly its behavior under extreme conditions, is crucial for developing stable and efficient manganese-based perovskite materials and expanding their application scenarios. In this study, we systematically investigated the structural and optical properties of CsMnCl3 using diamond anvil cell (DAC) technology combined with in-situ high-pressure photoluminescence (PL) spectroscopy, absorption spectroscopy, Raman spectroscopy, X-ray diffraction (XRD), and first-principles calculations. At ambient pressure, CsMnCl3 crystallized in the R 3¯m space group. During compression, we observed a structural transition at approximately 0.9 GPa, accompanied by a significant enhancement about 8.4 times in the photoluminescence intensity of CsMnCl3. Within the experimental pressure range from 0 to 32.2 GPa, the optical bandgap gradually decreases by about 28% with increasing pressure. Our findings provide theoretical support and experimental evidence for optimizing the high-pressure stability of manganese-based perovskite materials and expanding their functional applications under extreme conditions. Additionally, the fundamental understanding of metal halide perovskites under high pressure is enriched.}
}