There are 2 primary sorts of thin-film PV semiconductors out there currently: cadmium telluride (CdTe) and copper indium gallium diselenide (CIGS). Both elements may be deposited instantly on to possibly the front or back with the module surface area. Thanked 441 Moments in 218 Posts Solar Businesses Has any one https://cruztvuts.blogoxo.com/35804463/solar-panel-installation-guid-things-to-know-before-you-buy