Metal ion modulation triggers dielectric double switching and green fluorescence in A<sub>2</sub>MX<sub>4</sub>-type compounds
Ting Shao, Rui‐Ying Ren, Pei‐Zhi Huang, Hao‐Fei Ni, Chang‐Yuan Su, Da‐Wei Fu, Liyan Xie, Hai‐Feng Lu
Abstract
] (compound 3). Compound 1 and compound 2 undergo two reversible phase transitions at high temperature (328.95/359.25 K and 350.45/393.15 K, respectively). Since the inorganic skeleton has a strong influence on the luminescence properties of such structured substances, Cd and Co were replaced with Mn, after which compound 3 was obtained as expected. The above strategy triggered bright green luminescence with a quantum yield of 35.19%, and significantly increased the phase transition temperature of compound 3 to above 400 K. The above results show that the regulation of the inorganic skeleton provides a new strategy for researchers to develop dual phase change/luminous materials.