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US 5,676,766 AGranted
Solar cell having a chalcopyrite absorber layer
AssigneeSiemens Aktiengesellschaft
InventorsVolker Probst, Franz Karg
Life of this patent
Estimating the term…
Abstract
A solar cell has a chalcopyrite absorber layer that is applied on the substrate side over an adhesive layer which is chosen from chromium, titanium, tantalum, and titanium nitride.
Claims3
A solar cell comprising:
- an electrically nonconductive substrate;
- a back electrode on the substrate;
- and a chalcopyrite absorber layer of general composition CuIn.sub.1-x Ga.sub.x S.sub.1-y Se.sub.y (1.gtoreq.x,y.gtoreq.0), in which an intermediate layer of a material which is chosen from Cr, Ti, Ta, and titanium nitride is arranged between the absorber layer and the back electrode, the intermediate layer having a thickness of 1-40 nm.
Dependencies are inferred from the claim text.