Solar cell module with improved weathering characteristics
AssigneeCanon Kabushiki Kaisha
InventorYuji Inoue
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Abstract
An improved solar cell characterized in that the grid electrode has a coating comprising an epoxy resin of 20 g/m.sup.2 .multidot.day.multidot.0.1 mm/40.degree. C..multidot.90%RH or less in moisture permeability which is disposed so as to cover the entire exposed exterior of said grid electrode. The solar cell module is free of short-circuits between the grid electrode and the lower electrode even upon repeated use under severe environmental conditions of high temperature and high humidity, and continuously exhibits a desirable photoelectric conversion efficiency over a long period of time.
Claims16
In a solar cell module which comprises an amorphous silicon solar cell element encapsulated by a filler, said amorphous silicon solar cell element comprising a metal electrode layer, an amorphous silicon semiconductor layer having a pin junction, a transparent and conductive layer, and a grid electrode disposed in this order on a conductive substrate, said solar cell element being disposed on a base member, the improvement characterized in that said grid electrode has a coating comprising an epoxy resin of 20 g/m.sup.2 .multidot.day.multidot.0.1 mm/40.degree. C..multidot.90%RH or less in moisture permeability which is disposed as to cover the entire exposed exterior of said grid electrode.
In a solar cell module which comprises a plurality of amorphous silicon solar cell elements integrated in series connection and encapsulated by a filler, each of said plurality of amorphous silicon solar cell elements comprising a metal electrode layer, an amorphous silicon semiconductor layer having a pin junction, a transparent and conductive layer, and a grid electrode disposed in this order on a conductive substrate, said solar cell elements being disposed on a base member, the improvement characterized in that said grid electrode of each of said plurality of amorphous silicon solar cell elements has a coating comprising an epoxy resin of 20 g/m.sup.2 .multidot.day.multidot.0.1 mm/40.degree. C..multidot.90%RH or less in moisture permeability which is disposed so as to cover the entire exposed exterior of said grid electrode.
Dependencies are inferred from the claim text.