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Synthesis and Properties of a Lead-Free Hybrid Double Perov-skite: (CH3NH3)2AgBiBr6

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Peer-reviewed

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Article

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Authors

Wei, Fengxia 
Sun, Shijing 
Zhang, Fenghua 
Evans, Donald 

Abstract

The discovery of lead-free hybrid double perovskites provides a viable approach in the search for stable and environmentally benign photovoltaic materials as alternatives to the lead-containing systems such as MAPbX3 (X = Cl, Br, I). Follow-ing our recent reports of (MA)2KBiCl6 and (MA)2TlBiBr6, we have now synthesized a hybrid double perovskite, (MA)2AgBiBr6, that has a low band gap of 2.02eV and is rela-tively stable and non-toxic. Its electronic structure and me-chanical and optical properties are investigated with a com-bination of experimental studies and density functional theory calculations.

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Journal Title

Chemistry of Materials

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Volume Title

29

Publisher

American Chemical Society
Sponsorship
Engineering and Physical Sciences Research Council (EP/K014560/1)