| abstract |
The present invention relates to thin film solar cell structures and methods of manufacturing them, particularly tandem cell structures and components thereof. In one aspect there is provided a polycrystalline thin film solar cell structure that is semi-transparent and allows a predetermined wavelength range of light to pass therethrough, in which a bottom semi-transparent conductive layer includes at least one of a ruthenium oxide, an osmium oxide and an iridium oxide. In another aspect there is provided a tandem cell structure in which a top cell bottom contact layer includes at least one of a ruthenium oxide, an osmium oxide and an iridium oxide. In a preferred aspect, the tandem cell structure contains a single contact layer between the absorber layer of the top cell and the absorber layer of the bottom cell. In a particular aspect, this single contact layer is a ruthenium oxide layer. |