Method and structure for tiling industrial thin-film solar devices
View Patent ↗A method for integrating photovoltaic module includes providing a cover plate having a first surface and a second surface opposed to the first surface and supplying photovoltaic devices respectively formed on substrates. The photovoltaic devices include photovoltaic cells electrically coupled to each other, and each cell is characterized by a thin-film photovoltaic layer sandwiched between a first electrode material and a second electrode material. The first electrode material overlies the substrate and the second electrode material overlies the thin-film photovoltaic layer. The method further includes disposing the solar devices side by side to laminate with the cover plate by means of a first organic material filled between the second electrode material and the second surface. Each of the solar devices has a peripheral edge region being sealed by a second organic material. The method further includes electrically coupling the solar devices to each other.
1. A method for integrating a photovoltaic module, the method comprising:
providing a cover plate having a first surface and a second surface opposed to the first surface;
supplying at least two solar devices respectively formed on substrates, each of the at least two photovoltaic devices including a plurality of photovoltaic cells electrically coupled to each other, each cell being characterized by a thin-film photovoltaic layer sandwiched between a first electrode material and a second electrode material, the first electrode material overlying the substrate and the second electrode material overlying the thin-film photovoltaic layer;
disposing the at least two solar devices side by side to laminate with the cover plate by means of a first organic material filled between the second electrode material and the second surface, each of the solar devices having a peripheral edge region being sealed by a second organic material; and
electrically coupling the solar devices to each other.
2. The method of claim 1 wherein the first organic material is a transparent polymer selected from ethylene vinyl acetate and polyvinyl butyral.
3. The method of claim 1 wherein the second organic material comprises a polymeric sealant material selected from butyl rubber, urethane and polyurethane materials, polyisobutylene materials, epoxide materials, polysulfamide materials, and cyanoacrylates.
4. The method of claim 1 wherein each of the solar devices comprises a dimension of about 65 cm by 165 cm including the plurality of photovoltaic cells each having a stripe shaped pattern of about 5 mm by about 160 cm.
5. The method of claim 1 wherein the thin-film photovoltaic layer comprises a chalcopyrite compound semiconductor material selected from copper indium diselenide, copper indium disulfide, copper indium gallium diselenide, and copper indium disulfide.
6. The method of claim 1 wherein the electrically coupling comprises using a ribbon conductor embedded within the first organic material to connect to an electric contact disposed along an edge of the cover plate.
7. The method of claim 1 wherein the electrically coupling comprises using a ribbon conductor passed through the solar device and the substrate to an electrical contact disposed at rear side of the substrate.
8. The method of claim 1 wherein the cover plate comprises a hardened glass having a transparent region over main areas of the solar devices and an opaque region over the peripheral edge regions of the solar devices.
9. The method of claim 1 wherein the cover plate comprises a transparent polymer.