NOVELTY - A solar battery back film contains base layer (1), outer surface of light dispersion layer (2), and heat-absorbing layer (3).    USE - A solar battery back film (claimed).    ADVANTAGE - Solar battery back film has high-radiation properties and improves power generation efficiency of solar cell module and service life of solar battery assembly.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) formation of fluorosilicone film forming layer which involves performing irradiation or plasma activation of outer surface of heat absorbing layer and adding modifier in which modifier is silane coupling agent, fluorinated siloxane, and/or polysiloxane; and    (2) processing of solar battery back film which involves preparing nano metal powder and high molecular weight polymer, pressing nano grade black paint absorbing material, radiating white pigment material, coating by roller, performing curtain coating, spray coating or printing, depositing uniformly on outer surface of base layer to form radiating layer, coating radiating layer with base layer, coating 2 sides of layer with fluorine-based resin or with UV absorbing function acrylic polymer coating to form surface layer in which surface layer is located on inner surface of base layer and radiating layer, performing roller coating, performing curtain coating, performing spray coating or printing, coating black evenly deposited on surface layer of base layer on surface of heat absorbing layer, performing high energy irradiation treatment or plasma treatment of outer surface, activating heat absorbing layer on outer surface of heat absorbing layer, spraying outer surface of heat absorbing layer, activating, roller coating, curtain coating, or impregnation of modified agent, and heating to 20-70 degrees C to obtain outer surface of heat absorbing layer.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of solar battery back film.    Base layer (1)    Outer surface of light dispersion layer (2)    Heat absorbing layer (3)