“…Research has been focused on exploring antimony-based perovskite materials (such as Cs 2 SbCuCl 6 , Cs 4 SbCuCl 12 , Cs 2 SbAgCl 6 , Cs 2 SbAgI 6 , and Cs 2 SbAgBr 6 ) as they offer unique attributes like stability at high temperatures and exceptional charge carrier conductivity. However, their wide band gaps, high binding energies, and high carrier effective mass limit their performance . Apart from perovskites, researchers are also exploring other light absorbers such as ternary II–IV–N 2 nitrides (ZnSnN 2 ), , binary halides (InI and BiI 3 ), AbZ 2 chalcogenides (AgBiS 2 , NaBiS 2 , and NaSbS 2 ), Bi-based chalcohalides (BiOI, BiSI, Bi 19 S 27 Br 3 , and Bi 13 S 18 I 2 ), Sb-based chalcohalides (SbSI, , SbSeI, and SbBiISI), Pb-based chalcohalides (Pb 4 S 3 Br 2 and Pb 2 SbS 2 I 3 ), Ag-based chalcohalides (Ag 3 BiI 6–2x S x ), Sn-based chalcohalides (Sn 2 SbS 2 I 3 ), hybrid organic–inorganic metal chalcogenides (MASbSI 2 and MA 3 Bi 2 I 9–2x S x ), I 2 –II–IV–VI 4 semiconductors (Cu 2 BaSnSe 4 , Cu 2 SrSnS 4 ), and II–V semiconductors (Zn 3 P 2 ). − Despite their promise, these emerging absorbers have exhibited PCEs below 8%.…”