| Autor: |
Wang ZJ; Chaotic Matter Science Research Center, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China. jrli@fjirsm.ac.cn., Wu LK; Chaotic Matter Science Research Center, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China. jrli@fjirsm.ac.cn., Wang N; Chaotic Matter Science Research Center, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China. jrli@fjirsm.ac.cn., Hu QQ; State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China., Li JR; Chaotic Matter Science Research Center, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China. jrli@fjirsm.ac.cn.; State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China., Ye HY; Chaotic Matter Science Research Center, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, P. R. China. jrli@fjirsm.ac.cn. |
| Abstrakt: |
As promising functional materials, organic-inorganic hybrid metal halide perovskites have attracted significant interest because of their excellent photovoltaic performance. However, although considerable efforts have been made, three-dimensional (3D) metal halide perovskites beyond lead halides have been rarely reported. Herein, a new 3D organic-inorganic hybrid ferroelectric material (Me-Hdabco)CsI 3 (1, Me-Hdabco = N -methyl-1,4-diazoniabicyclo[2.2.2]octane) was synthesized and characterized. 1 underwent a ferroelectric to paraelectric phase transition at T c = 441 K, which was investigated by differential scanning calorimetry (DSC), dielectric measurements, and variable temperature structural analyses. Moreover, 1 shows a clear ferroelectric domain switching recorded by piezoelectric force microscopy. More interestingly, the pristine colorless crystal of 1 has no photoluminescence properties, while 10% Sn(II):(Me-Hdabco)CsI 3 shows intense photoluminescence with a quantum yield of 8.90% under UV excitation. This finding will open up a new avenue to probe organic-inorganic hybrid multifunctional materials integrated ferroelectric and photoluminescence. |
