NOVELTY - A copper indium gallium di-selenide (CIGS) laminate structure comprises metal foil; polyimide dielectric layer (12) having top and bottom surface, the bottom surface being in direct contact with surface of the foil, where polyimide dielectric layer having polyimide derived from aromatic rigid rod diamine and aromatic rigid rod dianhydride to provide polyimide and its layer; bottom electrode (16) formed directly on polyimide dielectric layer top surface, where the polyimide layer is between metal foil and bottom electrode; and CIGS layer formed directly on the bottom electrode.    USE - As copper indium gallium di-selenide (CIGS) laminate structure (claimed), used in solar cell.    ADVANTAGE - The copper indium gallium di-selenide (CIGS) laminates has sufficient thermal and dimensional stability to withstand fabrication temperatures in the production of high efficiency CIGS based photovoltaic devices; has sufficient electrical insulation properties to allow monolithic integration of CIGS solar cells.    DETAILED DESCRIPTION - A copper indium gallium di-selenide (CIGS) laminate structure comprises a metal foil having a thickness of 5-100 microns; a polyimide dielectric layer (12) having a top and bottom surface, the bottom surface being in direct contact with surface of the metal foil, the polyimide dielectric layer having a thickness of 8-100 microns, and having a polyimide derived from at least one aromatic rigid rod diamine and aromatic rigid rod dianhydride to provide a polyimide having a Tg greater than 300 degrees C and to provide a polyimide layer having an isothermal weight loss of less than 1% under inert conditions at 500 degrees C over 30 minutes and an in-plane CTE less than 25 ppm/ degrees C; a bottom electrode (16) formed directly on the polyimide dielectric layer top surface, where the polyimide layer is between the metal foil and the bottom electrode; and a CIGS layer formed directly on the bottom electrode, where the bottom electrode is between the CIGS layer and the polyimide dielectric layer.    DESCRIPTION OF DRAWING(S) - The figure shows sectional view of thin-film solar cell comprising copper indium gallium di-selenide laminates.    Solar cell (10)    Polyimide dielectric layers (12)    Copper indium gallium di-selenide (CIGS) Layer (14)    Bottom electrode (16)    Grid contact (24)