NOVELTY - Process comprises: (a) providing a reaction mixture comprising monomer A, monomer B comprising ethylene, propene, butenes, vinyl ethers, cyclo-olefins and/or substituted derivatives, where the substituent is halo, ether groups and CN or a free radical initiator; (b) copolymerizing monomer A and monomer B to form a photocrosslinkable copolymer; (c) isolating the photocrosslinkable copolymer; and (d) exposing the photocrosslinkable copolymer to UV radiation to form a photocrosslinked copolymer.    USE - The photocrosslinked copolymer is useful in device (claimed), such as photovoltaic cells or concentrating photovoltaic cells.    ADVANTAGE - The photocrosslinked copolymer does not expose the fluoropolymers to high energy processes that can degrade the fluoropolymer.    DETAILED DESCRIPTION - Process comprises: (a) providing a reaction mixture comprising monomer A has a structure of formula (CF2=CF(OCxF2x)w(OCyF2y)zR), monomer B comprising ethylene, propene, butanes, vinyl ethers, cyclo-olefins and/or substituted derivatives, where the substituent is halo, ether groups and CN, and a free radical initiator, (b) copolymerizing monomer A and monomer B to form a photocrosslinkable copolymer, (c) isolating the photocrosslinkable copolymer, and (d) exposing the photocrosslinkable copolymer to UV radiation to form a photocrosslinked copolymer.    w = 1-3;    x = 1-10;    y = 1-10;    z = 0-4;    R = CN or CO2R1; and    R1 = C1-C4 alkyl.    INDEPENDENT CLAIMS are included for:    (1) a photocrosslinked copolymer produced by the process; and    (2) a photocrosslinkable fluoropolymer comprising 20-50 mole.% of 2,2,3,3-tetrafluoro-3-(1,2,2-trifluoro-1-trifluoromethyl-2-trifluorovinyloxy-ethoxy)-propionic acid methyl ester (EVE) and 50-80 mole% of a monomer is E, 1,1,2,2-tetrafluoroethylene (TFE), 1,1-difluoroethylene (VF2) and perfluorodimethyldioxole (PDD), (a1) 1-10mole.% of EVE, (b1) 30-98 mole.% of TFE and (c1) 1-69 mole.% of a monomer comprising PDD, 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2-trifluorovinyloxy)propane (PPVE), 1,1,2-trifluoro-2-(trifluoromethoxy)ethylene (PMVE), 1,1,2-trifluoro-2-pentafluoroethyloxy-ethene (PEVE), 1,1,2,3,3,3-hexafluoro-propene (HFP), 1,2-trifluoroethylene (3FE), fluoroethylene (VF), 1-chloro-1,2,2-trifluoro-ethylene (CTFE), and VF2, and (a2) 1-50 mole.% of 2,2,3,3-tetrafluoro-3-(1,2,2-trifluoro-1-trifluoromethyl-2-trifluorovi nyloxy-ethoxy)-propionitrile (8-CNVE), (b2) 20-80 mole.% of PDD and (c2) 1-79 mole.% of TFE or 2-(3-cyanato-1,1,2,2-tetrafluoro-propoxy)-1,1,1,2,3,3-hexafluoro-3-trifluorovinyloxy-propane (EVEOCN).