NOVELTY - Cover glass film structure comprises a thermal barrier coating film and a high-transmission coating film that are successively formed on an upper side of a cover glass that includes a base iron glass, where the thermal barrier coating film includes a heat shield filler for shielding optical transmission of 1100 nm and the heat shield filler includes graphene, carbon nanotube, indium titanium oxide, antimony tin oxide, aluminum doped zinc oxide, flourine doped tin oxide, and a binder resin including high-refractive resin consisting of titanium butoxide and titanium isopropoxide.    USE - The cover glass film structure is useful in a solar cell (claimed).    ADVANTAGE - The cover glass film structure has improved cover glass effect, reduces the solar energy generation time and lengthens lifetime of the solar module in the desert region.    DETAILED DESCRIPTION - Cover glass film structure comprises a thermal barrier coating film and a high-transmission coating film that are successively formed on an upper side of a cover glass, where the high transmission coating film increases transmittance and optical wavelength band of 380-1100 nm in visible light area and the thermal barrier coating film blocks the thermal energy of the infrared area. The cover glass includes a base iron glass. The thermal barrier coating film includes a heat shield filler for shielding optical transmission of 1100 nm. The heat shield filler includes graphene, carbon nanotube, indium titanium oxide, antimony tin oxide, aluminum doped zinc oxide, flourine doped tin oxide, and a binder resin including high-refractive resin consisting of titanium butoxide and titanium isopropoxide. An INDEPENDENT CLAIM is included for preparing cover glass film structure comprising coating thermal barrier coating composition over a heat shield layer with a filler metal binder through sol-gel synthesis, mixing 100 pts. wt. of high refractive index resin, 5-20 pts. wt. of alcohol in presence of catalyst, and adding chelating agent, adding 0.1-3 pts. wt. of cationic agent over the high transmission coating.