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Phosphonium-Based One-Dimensional Perovskite with Switchable Dielectric Behaviors and Phase Transitions

Authors :
Qiong Ye
Lei He
Ying-Jie Cao
Ping-Ping Shi
Si-Min Liu
Source :
Inorganic Chemistry. 59:18396-18401
Publication Year :
2020
Publisher :
American Chemical Society (ACS), 2020.

Abstract

The one-dimensional (1D) ABX3-type perovskite [(CH3)3PCH2F]CdCl2Br (1) has been obtained on the basis of the design of an organic-inorganic hybrid. Strikingly, it experiences sequential phase transitions at around 295 and 336 K, respectively. Given the noticeable steplike dielectric anomalies in the vicinity of 295 K, 1 is identified as a promising dielectric-switchable material. According to the single-crystal structure analysis, the order-to-disorder transformation of the [(CH3)3PCH2F]+ cation is the main reason for the phase transitions and the change of space group from the orthorhombic Pnma (No. 62) to the hexagonal P63/m (No. 176). This design of a perovskite structure will inspire more advances in the ever-growing field of switchable functional materials.

Details

ISSN :
1520510X and 00201669
Volume :
59
Database :
OpenAIRE
Journal :
Inorganic Chemistry
Accession number :
edsair.doi.dedup.....3775da72c6ce60626f9696e594db946d
Full Text :
https://doi.org/10.1021/acs.inorgchem.0c03008