A barrier assembly comprising a flexible visible light-transmissive polymeric substrate comprising heat-stabilized PET, polyethylene naphthalate, polyoxymethylene, polyvinylnaphthalene, polyetheretherketone, fluoropolymer, polycarbonate, poly α-methyl styrene, polysulfone, polyphenylene oxide, polyetherimide, poly ether sulfone, polyamideimide, polyimide or polyphthalamide, and having a Tg greater than or equal to 78 °C as measured by differential scanning calorimetry overcoated with a first polymer layer comprising a polymer formed from urethane acrylates, urethane methacrylates, isobornyl acrylate, isobornyl methacrylate, dipentaerythritol pentaacrylate, dipentaerythritol pentamethacrylate, epoxy acrylates blended with styrene, epoxy methacrylates blended with styrene, di-trimethylolpropane tetraacrylate, ditrimethylolpropane tetramethacrylate, diethylene glycol diacrylate, diethylene glycol dimethacrylate, 1,3-butylene glycol diacrylate, 1,3-butylene glycol dimethacrylate, pentaacrylate esters, pentamethacrylate esters, pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, pentaerythritol triacrylate, pentaerythritol trimethacrylate, ethoxylated trimethylolpropane triacrylate, ethoxylated trimethylolpropane trimethacrylate, alkoxylated trifunctional acrylate esters, alkoxylated trifunctional methacrylate esters, dipropylene glycol diacrylate, dipropylene glycol dimethacrylate, neopentyl glycol diacrylate, neopentyl glycol dimethacrylate, ethoxylated bisphenol a diacrylate, ethoxylated bisphenol a dimethacrylate, cyclohexane dimethanol diacrylate ester, cyclohexane dimethanol dimethacrylate ester, cyclic diacrylates, cyclic dimethacrylates, tris (2-hydroxy ethyl) isocyanurate triacrylate, and tris (2-hydroxy ethyl) isocyanurate trimethacrylate, and having a Tg greater than or equal to 78 °C as measured by differential scanning calorimetry and further overcoated with at least two visible light-transmissive inorganic barrier layers separated by at least one second polymer layer comprising a polymer formed from urethane acrylates, urethane methacrylates, isobornyl acrylate, isobornyl methacrylate, dipentaerythritol pentaacrylate, dipentaerythritol pentamethacrylate, epoxy acrylates blended with styrene, epoxy methacrylates blended with styrene, di-trimethylolpropane tetraacrylate, ditrimethylolpropane tetramethacrylate, diethylene glycol diacrylate, diethylene glycol dimethacrylate, 1,3-butylene glycol diacrylate, 1,3-butylene glycol dimethacrylate, pentaacrylate esters, pentamethacrylate esters, pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, pentaerythritol triacrylate, pentaerythritol trimethacrylate, ethoxylated trimethylolpropane triacrylate, ethoxylated trimethylolpropane trimethacrylate, alkoxylated trifunctional acrylate esters, alkoxylated trifunctional methacrylate esters, dipropylene glycol diacrylate, dipropylene glycol dimethacrylate, neopentyl glycol diacrylate, neopentyl glycol dimethacrylate, ethoxylated bisphenol a diacrylate, ethoxylated bisphenol a dimethacrylate, cyclohexane dimethanol diacrylate ester, cyclohexane dimethanol dimethacrylate ester, cyclic diacrylates, cyclic dimethacrylates, tris (2-hydroxy ethyl) isocyanurate triacrylate, and tris (2-hydroxy ethyl) isocyanurate trimethacrylate, and having a Tg greater than or equal to 78 °C as measured by differential scanning calorimetry, the barrier assembly having an oxygen transmission rate less than 0.005 cc/m 2 /day at 23 °C and 90% relative humidity.