Patent ID: 9390917
Filing Date: 2016-07-12
CPC Classification: H01L,Y02E,Y02P

Claim Text:
1. A method comprising: depositing a precursor layer onto a substrate, the precursor layer comprising Cu, Zn, and Sn, and one or more of S or Se; introducing a source-material layer into contact with the precursor layer, the source-material layer comprising Sn and one or more of S or Se; and annealing the precursor layer and the source-material layer, wherein the annealing is performed in a constrained volume and with the source-material layer in contact with the precursor layer while controlling a partial pressure of at least one of gaseous SnS, SnSe, Se, S and any combination thereof which decomposes from the source-material layer during the annealing in the constrained volume to suppress decomposition of the precursor layer.