Multi-phase, single layer, non-interdiffusing M-Mo back contact metallized films, where M is selected from Cu, Ga, or mixtures thereof, for CIS cells are deposited by a sputtering process on suitable substrates, preferably glass or alumina, to prevent delamination of the CIS from the back contact layer....http://www.google.es/patents/US5477088?utm_source=gb-gplus-sharePatente US5477088 - Multi-phase back contacts for CIS solar cells
