Gallium(III) sulfide is used in electronics and photonics. It acts as an active material in lithium secondary batteries. Further, it is used in thin-film solar cells. It is also used to prepare gallium lanthanum sulfide glass by reacting with lanthanum sulfide.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.