Light-transmissive resin sealed semiconductor
AssigneeCanon Kabushiki Kaisha
InventorsIchiro Kataoka, Takahiro Mori, Satoru Yamada, Hidenori Shiotsuka, Ayako Komori
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Abstract
A light-transmissive resin sealed semiconductor is provided which is sealed at least at a light incident face of a photoelectric transducer with an organic polymer resin layer, which comprises a copolymer of ethylene and an unsaturated fatty acid ester. This light-transmissive resin sealed semiconductor has a surface layer which has high heat resistance, and low hygroscopicity, and does not liberate a free acid even in the presence of moisture. Thereby the semiconductor is prevented from deterioration of performances caused by the drop of the shunt resistance of the photovoltaic element under high humidity environment.
Claims41
A light-transmissive resin sealed semiconductor which is sealed at least at a light-incident face of a photoelectric transducer with an organic polymer resin layer, wherein the organic resin layer comprises
- at least one copolymer selected from the group consisting of ethylene-methyl acrylate, ethylene-ethyl acrylate, ethylene-butyl acrylate, ethylene-methyl methacrylate and ethylene-ethyl methacrylate.
A photovoltaic device comprising a photovoltaic element and a resin layer provided at a light-incident side of the photovoltaic element, wherein the resin layer comprises
- at least one copolymer selected from the group consisting of ethylene-methyl acrylate, ethylene-ethyl acrylate, ethylene-butyl acrylate, ethylene-methyl methacrylate and ethylene-ethyl methacrylate.
A photovoltaic device comprising a photovoltaic element, a resin layer provided at a light-incident side of the photovoltaic element, and a surface film, wherein the resin layer comprises
- at least one copolymer selected from the group consisting of ethylene-methyl acrylate, ethylene-ethyl acrylate, ethylene-butyl acrylate, ethylene-methyl methacrylate and ethylene-ethyl methacrylate.
A photovoltaic device comprising a photovoltaic element, a resin layer provided at a light-incident side of the photovoltaic element, a surface film, and a back face covering film, wherein the resin layer comprises
- at least one copolymer selected from the group consisting of ethylene-methyl acrylate, ethylene-ethyl acrylate, ethylene-butyl acrylate, ethylene-methyl methacrylate and ethylene-ethyl methacrylate.
A process for producing a photovoltaic device, which comprises the steps of preparing a photovoltaic element, placing on the light-incident side of the photovoltaic element a sheet or pellet comprising
- at least copolymer one selected from the group consisting of ethylene-methyl acrylate, ethylene-ethyl acrylate, ethylene-butyl acrylate, ethylene-methyl methacrylate and ethylene-ethyl methacrylate,
- and then heat melting the sheet or the pellet to form a resin layer on the photovoltaic element.
A photovoltaic device comprising a photovoltaic element, a resin layer provided at a light-incident side of the photovoltaic element, a surface film, a back face covering film, and a reinforcing plate, wherein the resin layer comprises
- at least one copolymer selected from the group consisting of ethylene-methyl acrylate, ethylene-ethyl acrylate, ethylene-butyl acrylate, ethylene-methyl methacrylate and ethylene-ethyl methacrylate.
Dependencies are inferred from the claim text.