Halogen substitution effects on optical and electrical properties in 3D molecular perovskites

Both 3D organic-inorganic perovskites ([Et3P(CH2)2Cl][Cd(dca)3] (1) and [Et3P(CH2)2F][Cd(dca)3] (2) [dca = dicyanamide, N(CN)2-]) display two sequentially reversible high-temperature phase transitions and switchable dielectric properties. Through halogen substitution, 1 shows exceptional switching b...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2018-11, Vol.54 (94), p.13275-13278
Main Authors: Zhao, Meng-Meng, Zhou, Lin, Shi, Ping-Ping, Zheng, Xuan, Chen, Xiao-Gang, Gao, Ji-Xing, Geng, Fu-Juan, Ye, Qiong, Fu, Da-Wei
Format: Article
Language:English
Subjects:
Crystallography
Dielectric properties
Electrical properties
High temperature
Optical properties
Perovskites
Phase transitions
Second harmonic generation
Substitutes
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Summary:Both 3D organic-inorganic perovskites ([Et3P(CH2)2Cl][Cd(dca)3] (1) and [Et3P(CH2)2F][Cd(dca)3] (2) [dca = dicyanamide, N(CN)2-]) display two sequentially reversible high-temperature phase transitions and switchable dielectric properties. Through halogen substitution, 1 shows exceptional switching behaviour of second harmonic generation effects and remarkably 2 represents the first above-room-temperature 3D ferroelastic material characterized by two ferroelastic phases.
ISSN:1359-7345
1364-548X
DOI:10.1039/c8cc07052k