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Abstract

A solar cell assemblage and method of making, comprising: (a) a pre-treated silanized transparent substrate; (b) a layer of semiconductor material; (c) an electrical contact on the surface of said layer of semiconductor material; (d) an extruded transparent film encapsulating the assemblage which comprises 75 to 91 parts by weight of a blend of: 65 to 75 parts by weight of a selectively hydrogenated two-block polymer wherein (1) each A is a polymer block of a monovinyl or alpha alkyl monovinyl arene and the A blocks are from 10 to 40% by weight of the total block copolymer, and (2) each B is a polymer block formed by polymerizing a conjugated diene, and the B blocks are 90 to 60% weight of the total block copolymer, and 25 to 35 parts by weight of a selectively hydrogenated multiblock copolymer wherein: (1) each A is a polymer endblock of a monovinyl or alpha alkyl monovinyl arene and the A blocks are 10 to 40% by weight of the total block copolymer, and (2) each B is a polymer midblock is formed by polymerizing a conjugated diene and the B blocks are 90 to 10% weight of the total block copolymer, about 8.5 to about 23.5 parts by weight of an (alpha) methyl styrene polymer tackifying resin; and about 0.5 to about 1.5 parts by weight of a mixture of a phenolic antioxidant, a UV absorber with benzotriazole functionality and a UV absorber with hindered amine functionality; (e) a carbon filled polymer frame; and (f) sealant.

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First Claim