“…Hybrid halometallates are an intensively studied class of chemical compounds due to their excellent light-absorbing properties, making them promising effective materials for solar cells and photodetectors. 1–4 Some of the most studied hybrid halometallates are halobismuthates with properties such as thermochromism, 5,6 luminescence, 7,8 photochromism, 9,10 and ferroelectricity. 11,12 Potential practical applications of halobismuthates include the solar energy industry 13 and other fields, in particular, the creation of photodetectors 14–16 and light-emitting diodes due to the wide absorption spectrum and low optical band gap values ( E g ) of the compounds.…”