CsPb2Br5 Single Crystals: Synthesis and Characterization

Ibrahim Dursun, Michele de Bastiani, Bekir Turedi, Badriah Jaber Alamer, Aleksander Shkurenko, Jun Yin, Issam Gereige, Ahmed Alsaggaf, Omar F. Mohammed, Mohamed Eddaoudi, Osman Bakr

Research output: Contribution to journalArticlepeer-review

131 Scopus citations


CsPb2Br5 is a ternary halogen-plumbate material with close characteristics to well-reported halide perovskites. Due to its unconventional two-dimensional structure, CsPb2Br5 is being looked at broadly for potential applications in optoelectronics. CsPb2Br5 investigations are currently limited to nanostructures and powder forms of the material, which present unclear and conflicting optical properties. In this study, we present the synthesis and characterization of CsPb2Br5 bulk single crystals, which enabled us to finally clarify the material's optical features. Our CsPb2Br5 crystal has a two-dimensional structure with Pb2Br5- layers spaced by Cs+ cations, and exhibits a ~3.1 eV indirect bandgap with no emission in the visible spectrum.
Original languageEnglish (US)
Pages (from-to)3746-3749
Number of pages4
Issue number19
StatePublished - Aug 30 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors acknowledge the financial support of King Abdullah University of Science and Technology (KAUST) and Saudi Aramco.


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