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A solar panel including a photovoltaic material layer; a backing panel; and an adhesive layer disposed between and adhering together the photovoltaic material layer and the backing panel, in which the adhesive layer comprises an adhesive composition, the adhesive composition comprising a low MVTR po

A solar panel including a photovoltaic material layer; a backing panel; and an adhesive layer disposed between and adhering together the photovoltaic material layer and the backing panel, in which the adhesive layer comprises an adhesive composition, the adhesive composition comprising a low MVTR polymer or copolymer and a silane-modified polymer or copolymer. In another embodiment, the solar panel includes module wire openings which are filled by an adhesive composition comprising a low MVTR polymer or copolymer and a silane-modified polymer or copolymer. A method of making the solar panel is provided.

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What is claimed is: 1. A solar panel comprising: a front panel; a photovoltaic material layer deposited either directly on the front panel or directly on an anti-reflective coating formed between the front panel and the photovoltaic material layer; a backing panel; an adhesive layer adhering the ph

What is claimed is: 1. A solar panel comprising: a front panel; a photovoltaic material layer deposited either directly on the front panel or directly on an anti-reflective coating formed between the front panel and the photovoltaic material layer; a backing panel; an adhesive layer adhering the photovoltaic material layer to the backing panel; wherein the adhesive layer comprises an adhesive composition, the adhesive composition comprising a low MVTR polymer or copolymer and a silane-modified polymer or copolymer, wherein the silane-modified polymer or copolymer is provided to the adhesive preformed and is different from the low MVTR polymer or copolymer; and wherein the silane-modified polymer or copolymer is a silane-crosslinkable halogenated polymer composition comprising a mixture of 100 parts by weight of a halogenated polymer and about 0.1 to about 20 parts by weight of an amino group-containing silane compound having the following general structure: description="In-line Formulae" end="lead"RHNR'Si(OR")3 description="In-line Formulae" end="tail" wherein R is hydrogen, an alkyl or a phenyl group, R' is an alkylene group, OR"is an alkoxy or alkoxyalkoxy group having 1 to 6 carbon atoms. 2. A method of fabricating a solar panel comprising a front panel, a photovoltaic material layer deposited either directly on the front panel or directly on an anti-reflective coating formed between the front panel and the photovoltaic material layer and a backing panel, the method comprising: (a) forming an adhesive composition having a low moisture vapor transmission rate by combining a low MVTR polymer or copolymer with a silane-modified polymer or copolymer, wherein the silane-modified polymer or copolymer is provided to the adhesive preformed and is different from the low MVTR polymer or copolymer; (b) adhering the photovoltaic material layer to the backing panel using the adhesive composition; and (c) cross-linking the silane-modified polymer or copolymer; wherein the low MVTR polymer or copolymer comprises at least one of a polyisobutylene, an isobutylene-isoprene copolymer, an isobutylene-isoprene-divinylbenzene copolymer, a chlorinated or brominated butyl rubber, an isobutylene-brominated p-methylstyrene copolymer, an isobutylene-p-methylstyrene copolymer, a chlorosulfonated polyethylene, an ethylene-alkyl (meth)acrylate copolymer, an acrylonitrile-butadiene copolymer, polychloroprene and mixtures of two or more thereof.