Copper antimony sulfide (CuSbS2) mesocrystals: A potential counter electrode material for dye-sensitized solar cells

•Uniform mesocrystals of CuSbS2 have been prepared by a simple hot injection method.•CuSbS2 mesocrystals are used as a replacement material for platinum as counter electrode in dye-sensitized solar cells.•The performance of solar cells using CuSbS2 is found to be comparable with that using platinum counter electrode.

Dye sensitized solar cells are commonly fabricated using expensive platinum as a counter electrode material. We demonstrate for the first time the use of CuSbS2 as a replacement for platinum in dye sensitized solar cells. The performance of solar cells using CuSbS2 is found to be comparable with that using platinum counter electrode.