Patent ID: 8057856
Filing Date: 2011-11-15
Classification: C23C

Abstract:
1. A reactive sputtering method for minimizing the production of undesirable atomic species within a single deposition chamber where the deposition of a phosphor film composition is effected on a substrate, the reactive sputtering method comprising: vaporizing one or more getter species simultaneously with the deposition of said phosphor film composition within said single deposition chamber, while adding hydrogen sulfide process gas, wherein said vaporization continuously provides getter species that getter undesirable atomic species, including at least water, oxygen, and excess sulfur, from within said chamber during deposition of said phosphor film composition to ensure that the same are not incorporated into the phosphor film, the vaporized getter being condensed in the deposition chamber at a location that is different from the location of the deposition substrate, such that the phosphor film has a predetermined composition comprising ternary, quaternary or higher sulfide compounds selected from the group consisting of thioaluminates, thiogallates and thioindates of at least one element from Groups IIA and IIB of the Periodic Table.