TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The solar cells are wafer-based solar cells from crystalline silicon or multi-crystalline silicone based solar cells. They are also thin film solar cells from amorphous silicon, microcrystalline silicon, cadmium telluride, copper indium selenide, copper indium/gallium diselenide, light absorbing dyes, or organic semiconductor based solar cells.    TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The ethylene copolymer comprises 6-15 wt.% copolymerized units of the ester of 4-8C unsaturated acid having two carboxylic acid groups. The ester of the 4-8C unsaturated acid having two carboxylic acid groups is monoesters of 4-8C unsaturated acids having two carboxylic acid groups, diesters of 4-8C unsaturated acids having two carboxylic acid groups, or two or more of their mixtures. The ethylene copolymer comprises 6-15 wt.% copolymerized units of a monoester of 4-8C unsaturated acid having two carboxylic acid groups. The monoester is ethyl hydrogen maleate. The sheet comprising the ethylene copolymer composition is in the form of a monolayer that contains the ethylene copolymer composition. It may be in the form of a multilayer sheet and has two or more sub-layers, where sub-layer(s) contains the ethylene composition and each of the other sublayer comprises polymer(s) including acid copolymers, ionomers of acid copolymers, ethylene/vinyl acetate copolymers, poly(vinyl acetals), polyurethanes, polyvinylchlorides, polyethylenes, polyolefin block copolymer elastomers, copolymers of an alpha -olefin and an alpha , beta -ethylenically unsaturated carboxylic acid, silicone elastomers, epoxy resins, or two or more of their mixtures. The sheet comprising the ethylene copolymer composition is in the form of a bi-layer sheet having two sub-layers, where sub-layer(s) contains ethylene composition and has a thickness of 0.5-15 mils. The sheet comprising the ethylene copolymer composition is in the form of a tri-layer sheet having an inner sub-layer sandwiched between two surface sub-layers, where one or both of the two surface sub-layers comprises the ethylene copolymer composition and has a thickness of 0.5-15 mils. The solar cell module comprises a front encapsulant layer (12) laminated to the sun-facing side of the solar cell layer and a back encapsulant layer (16) laminated to the non-sun-facing side of the solar cell layer, where encapsulant layer(s) is the sheet comprising the blend composition and the other encapsulant layer comprises a polymeric material from copolymers of alpha -olefin and an alpha , beta -ethylenically unsaturated carboxylic acid, ionomers of copolymers of an a-olefin and an alpha , beta -ethylenically unsaturated carboxylic acid, ethylene/vinyl acetate copolymers, poly(vinyl acetals), polyurethanes, polyvinylchlorides, polyethylenes, polyolefin block copolymer elastomers, copolymers of alpha -olefin and alpha , beta -ethylenically unsaturated carboxylic acid, silicone elastomers, and/or epoxy resins. The module further comprises an incident layer (10) including (i) glass sheets, (ii) polymeric sheets comprising a polymer from polycarbonates, acrylics, polyacrylates, cyclic polyolefins, polystyrenes, polyamides, polyesters, fluoropolymers, or two or more of their combinations, or (iii) polymeric films comprising polymer from polyesters, polycarbonate, polyolefins, norbornene polymers, polystyrene, styrene-acrylate copolymers, acrylonitrile-styrene copolymers, polysulfones, nylons, polyurethanes, acrylics, cellulose acetates, cellophane, poly(vinyl chlorides), fluoropolymers, or two or more of their combinations. The module further comprises a backing layer (18) including glass sheets, polymeric sheets, polymeric films, metal sheets, or ceramic plates, and the polymeric sheets comprise a polymer from polycarbonates, acrylics, polyacrylates, cyclic polyolefins, polystyrenes, polyamides, polyesters, fluoropolymers, or two or more of their combinations; and the polymeric films comprise a polymer from polyesters, polycarbonates, polyolefins, norbornene polymers, polystyrenes, styrene-acrylate copolymers, acrylonitrile-styrene copolymers, polysulfones, nylons, polyurethanes, acrylics, cellulose acetates, cellophanes, poly(vinyl chlorides), fluoropolymers, or two or more of their combinations.