Variable temperature behaviour of the hybrid double perovskite MA₂KBiCl₆

Perovskite-related materials show very promising properties in many fields. Pb-free perovskites are particularly interesting, because of the toxicity of Pb. In this study, hybrid double perovskite MA2KBiCl6 (MA = methylammonium cation) was found to have interesting variable temperature behaviours. B...

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Bibliographic Details
Main Authors: Wei, Fengxia, Wu, Yue, Sun, Shijing, Deng, Zeyu, Chew, Li Tian, Cheng, Baisong, Tan, Cheng Cheh, White, Timothy John, Cheetham, Anthony K.
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/169457
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Institution: Nanyang Technological University
Language: English
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Summary:Perovskite-related materials show very promising properties in many fields. Pb-free perovskites are particularly interesting, because of the toxicity of Pb. In this study, hybrid double perovskite MA2KBiCl6 (MA = methylammonium cation) was found to have interesting variable temperature behaviours. Both variable temperature single crystal X-ray diffraction, synchrotron powder diffraction, and Raman spectroscopy were conducted to reveal a rhombohedral to cubic phase transition at around 330 K and an order to disorder transition for inorganic cage below 210 K.