▎ 摘　　要

NOVELTY - Graphene modified solar battery self-cleaning anti-reflection glass comprises a single surface of the glass plated with a self-cleaning anti-reflection film with thickness of 120-200 nm, where the glass after the 600-700 degrees C treatment is capable of resisting the field rigorous application environment, the light transmittance of the solar cell self-cleaning anti-reflection glass after coating is 94.6-95.1%, the surface square resistance is 105-106 Omega surface hardness is 7H, the coating layer comprises 1-3 wt.% graphene, 3-9 wt.% transparent conductive oxide and mesoporous silicon dioxide (remaining amount), the transparent conductive oxide is antimony-doped tin oxide (ATO), tin-doped indium oxide (ITO) or aluminum-doped zinc oxide (AZO). USE - Used as graphene modified solar battery self-cleaning anti-reflection glass. ADVANTAGE - The method: improves transmittance of the solar battery glass before and after coating from 91.2% to 94.6-95.1%; and reduces the surface square resistance of glass from 1012 to 105-106. The glass of the invention can prevent the dust from adhering and improve the photoelectric conversion efficiency of the solar cell. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the graphene modified solar battery self-cleaning anti-reflection glass, comprising (i) preparing glass anti-reflection coating solution by using acidic nano-silicon dioxide hydrosol A with a mass concentration of 5 wt.% and an average diameter of 5nm and a pH of 1-2, which is produced by acid hydrolysis of ethyl orthosilicate in an aqueous ethanol solution, preparing alkaline nano-silicon dioxide hydrosol B with a mass concentration of 5%, average diameter of 20 nm and a pH of 9-11 by the commercially available sodium silicate ion exchange method, where mixing A:B in a ratio of 1:3-5, adjusting pH to 4-5 with 5% phosphoric acid aqueous solution, carrying out poly-reaction for 0.5-2 hours, further adjusting to pH of 2-3 to form a glass anti-reflection coating solution with a particle size range of 5-40 nm, (ii) preparing nano-graphene oxide dispersion by using self-made or commercially available industrial-grade graphene oxide dispersion with a mass concentration of 1%, adding glass anti-reflective coating solution, placing mixed solution container into the ultrasonic cleaning machine, dispersing the graphene oxide for 0.5-1.5 hours, controlling the mass ratio of nano-graphene oxide and nano-silicon dioxide to 0.002-0.006:1 to obtain nano-graphene oxide-nano-silicon dioxide dispersion, (iii) preparing nano transparent conductive oxide hydrosol which is based on the newly prepared nano tin hydroxide with mass concentration of 5%, then adding 5 wt.% nano- indium(III) hydroxide or 5 wt.% nano-zinc hydroxide to one of A components, then adding 5 wt.% nano-antimonous acid, 5 wt.% nano- indium(III) hydroxide or 5 wt.% nano aluminum hydroxide which are one of the B components, mixing, adding the C component of saturated oxalic acid solution, controlling the molar ratio of A component, B component and C component to 1:0.05-0.2:0.5-1, heating and peptizing at 60-70 degrees C for 1-3 hours to obtain a nano-transparent conductive oxide hydrosol with a mass concentration of 3-5%, (iv) preparing -cleaning anti-reflective coating solution is adding nano-transparent conductive oxide hydrosol to the nano-graphene oxide-nano-silicon dioxide dispersion liquid, controlling the mass ratio of nano-silicon dioxide and nano-transparent conductive oxide to 1:0.03-0.1, mixing uniformly, adding polyurethane emulsion dispersant with a mass concentration of 3% to obtain a self-cleaning anti-reflection coating solution with a mass concentration of 3-5%, (v) solar cell glass coating by coating the coating liquid on the surface of the solar cell glass to control the wet film thickness of 2-3 mu m, and using coating methods of bar coating, spraying and roller coating, (vi) forming dry gel film layer by placing coated glass in oven or a tunnel furnace, curing the gel for 6-10 minutes at 130-180 degrees C, forming dry gel film layer with a thickness of 120-200 nm, where the surface of the coating layer is flat, the adhesion is strong, the hardness of the film layer reaches 7H, and the light transmittance is greater than 94.6%, and (vii) glass tempering and self-cleaning anti-reflective coating by forming by placing the coated glass at 600-700 degrees C for 6-30 minutes, thermally reducing graphene oxide to graphene at high temperature, decomposing and volatilizing the organic matter in the coating layer, cooling, washing with deionized water and drying to obtain finished product, where the wavelength range is 80-1100 nm, the light transmittance of solar glass is 94.6-95.1%, and the surface sheet resistance is reduced from 1012 Omega of glass to 105-106 Omega .