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Structural diversity in layered hybrid perovskites, A2PbBr4 or AA′PbBr4, templated by small disc-shaped amines

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  • Embargoed (until 11/08/21)

Author(s)

Yuan-Yuan Guo, Lin-Jie Yang, Simon Biberger, Jason A. McNulty, Teng Li, Konstantin Schotz, Fabian Panzer, Philip Lightfoot

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Abstract

We present three new hybrid layered lead(II) bromide perovskites of generic composition A2PbBr4 or AA′PbBr4, which exhibit three distinct structure types. [TzH]2PbBr4, ([TzH+]= 1,2,4-triazolium), adopts a (001)-oriented layer structure, [AaH]2PbBr4, ([AaH+] =acetamidinium), adopts a (110)-oriented type, whereas [ImH][TzH]PbBr4, ([ImH+] =imidazolium),adopts a rare (110)-oriented structure with enhanced corrugation (i.e. ‘3 ×3’ type). The crystal structures of each are discussed in terms of the differing natureof the templating molecular species. Photoluminescent spectra for each are reported and the behaviours discussed in relation to the different structure of each composition.
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Original languageEnglish
Pages (from-to)12858-12866
JournalInorganic Chemistry
Volume59
Issue number17
Early online date11 Aug 2020
DOIs
Publication statusPublished - 8 Sep 2020

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