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Issue 9, 2018
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Heat-sensitive structural phase transitions of hybrid halide perovskite with double dielectric ON/OFF switches

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Abstract

A research domain on the ferroelectric and dielectric switching characteristics of hybrid perovskites has been opened because of their excellent physical/chemical features upon exposure to CH3NH3PbI3. To promote the development of applications, designing novel systems with superior performances is crucial. Here, we found [(CH3)3NOH][CdCl3], a hybrid perovskite, could be considered to be a multi-stable switchable dielectric material at high temperatures. The temperature-dependent crystal structure and differential scanning calorimetry studies revealed that it underwent three phases at low, intermediate and high temperature. Moreover, the origin of the phase transitions could be ascribed mainly to the order–disorder of trimethylamine N-oxide cations. When the temperature increased from low to high, [(CH3)3NOH][CdCl3] displayed a sequential switching effect with the dynamic change of organic cations. These findings provide an excellent model to develop molecule-based compounds as multi-switch materials.

Graphical abstract: Heat-sensitive structural phase transitions of hybrid halide perovskite with double dielectric ON/OFF switches

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Publication details

The article was received on 14 May 2018, accepted on 27 Jul 2018 and first published on 30 Jul 2018


Article type: Research Article
DOI: 10.1039/C8QI00447A
Citation: Inorg. Chem. Front., 2018,5, 2340-2345
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    Heat-sensitive structural phase transitions of hybrid halide perovskite with double dielectric ON/OFF switches

    T. Zhang, C. Chen, W. Zhang, Q. Ye and D. Fu, Inorg. Chem. Front., 2018, 5, 2340
    DOI: 10.1039/C8QI00447A

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