CIGS stands for copper indium gallium selenide, it is a thin film solar cell that is used to convert sun rays into electrical energy. CIGS thin film solar cells are manufactured by the process of depositing a thin layer of indium, copper, selenide and gallium on plastic backing or glass, having electrodes on the back and front to collect current. CIGS has a high absorption coefficient and absorbs sunlight strongly, so a thin film of this material is required to obtain the same electric energy as that of semiconductor materials. The thin-film photovoltaic technologies consists of three mainstreams namely amorphous silicon, cadmium telluride and CIGS. Like other materials in the thin-film photovoltaic technologies, CIGS is also flexible, that allows them to get deposited on the flexible substrates. Also the best performance of the solar cells comes from the glass deposited cells, as all the technologies use high temperature depositions. The performance of polysilicon-based panels are higher than these glass based technologies of solar cells, though advances in CIGS low temperature deposition is trying to erase these performance difference up to a great extent. CIGS Thin-film solar cells market is expected to expand at a healthy CAGR in the forecast period.