Dielectric barriers for fixible CIGS soalr modules

摘要

Cu(In, Ga)Se_2 (CIGS)-based thin-film solar modules are commonly deposited on float glass substrates at temperatures of approximately 550 deg. C For the preparation of flexible and monolithically integrated solar modules on metal foils, the substrates first have to be coated by an electrically insulating barrier. In this study, dielectric barrier layers of Al_2O_3 and SiO_x were deposited on metal foils of Ti, Kovar and ferritic Cr steel. The insulation properties were tested by sputtering small Mo contacts onto the barriers and measuring the resistance and breakdown voltages of the layers before and after CIGS deposition.