NOVELTY - Transparent multilayer film comprises: a first film layer comprising a fluorinated copolymer resin composition, where the fluorinated copolymer comprises copolymerized units of tetrafluoroethylene and copolymerized units of comonomers comprising ethylene and/or perfluorinated comonomer, and at least one surface of the first film layer has been modified by a surface treatment; and a second film layer comprising a blend composition, where the blend composition comprises an ethylene copolymer 1 and an ethylene copolymer 2.    USE - The transparent multilayer film is useful in a photovoltaic module (claimed) and solar cell module as an integrated front sheet or back sheet, where the solar cell module includes thin film and organic solar cells.    ADVANTAGE - The transparent multilayer film has higher transparency, better barrier properties, good adhesion property to fluoropolymer layers, preferably under adverse conditions, and improved light transmittance and photovoltaic modules.    DETAILED DESCRIPTION - Transparent multilayer film comprises: a first film layer comprising a fluorinated copolymer resin composition, where the fluorinated copolymer comprises copolymerized units of tetrafluoroethylene and copolymerized units of comonomers comprising ethylene and/or perfluorinated comonomer, and at least one surface of the first film layer has been modified by a surface treatment; and a second film layer comprising a blend composition, where the blend composition comprises an ethylene copolymer 1 and an ethylene copolymer 2, the ethylene copolymer 1 comprises copolymerized units of ethylene, optionally copolymerized units of a first olefin of formula (CH2=C(R1)CO2R2) (I), and copolymerized units of a second olefin of formula (CH2=C(R3)COOH) (II), and the ethylene copolymer 2 comprises copolymerized units of ethylene, optionally copolymerized units of the first olefin, and copolymerized units of a third olefin of formula (CH2=C(R3)D1) (III), where a surface of the second film layer is adhered to the modified surface of the first film layer and the multilayer film laminate is an average peel strength between the first film layer and the second film layer of greater than 5 lbf/in, measured after exposing the multilayer film laminate to conditions of 85 degrees C and 85% relative humidity for 1000 hours.    R1, R3 = H or alkyl;    R2 = alkyl;    D1 = moiety comprising -CO2R4, -CO2R5-R4, -R5-R4, -O-R4 or -R4, preferably CO2H;    R4 = moiety comprising epoxy; and    R5 = alkylene.    INDEPENDENT CLAIMS are included for:    (1) preparing the transparent multilayer film comprising providing the first film layer, providing the second film layer, contacting a surface of the second film layer with the modified surface of the first film layer, and adhering the first film layer to the second film layer by the application of heat and optionally pressure or vacuum; and    (2) preparing a photovoltaic module, comprising providing a solar cell layer, providing a multilayer film laminate i.e. larger in area than the solar cell layer, overlaying the solar cell layer with the multilayer film laminate such that the surface of the second layer of the multilayer film laminate contacts the solar cell layer, a portion of the second layer of the multilayer film laminate extends beyond the perimeter of the solar cell layer, and the portion of the second layer of the multilayer film laminate that extends beyond the perimeter of the solar cell layer contacts another layer i.e. an encapsulant layer, and adhering the second layer of the multilayer film laminate to the encapsulant layer by the application of heat and optionally pressure or vacuum to provide a photovoltaic module.