Cu2−XSe thin film with cubic berzelianite phase was fabricated by galvanic deposition.
Cubic berzelianite phase was found to possess both direct and indirect band gaps of 2.9 and 1.05 eV respectively.
Cu2−XSe thin films were found to be active visible light driven photocatalyst.
Thermoelectric property of Cu2−XSe film was investigated and ZT value was found to be 0.07 at room temperature.