Patent ID: 6886240

Claim:
An apparatus for producing a thin film electrolyte layer comprising, means for generating a high density plasma from a supply of at least one plasma gas; a substrate holder mounted adjacent said plasma generating means; means for vaporizing a volatile lithium containing precursor; means for vaporizing a volatile phosphate containing precursor; means for transporting the vaporized volatile lithium containing precursor and expelling the vaporized volatile lithium containing precursor into the previously created high density plasma; and means for transporting the vaporized volatile phosphate containing precursor and expelling the vaporized volatile phosphate containing precursor into the previously created high density plasma; whereby the volatile lithium containing precursor and volatile phosphate containing precursor are prevented from mixing with the plasma gas prior to the plasma being created by the plasma generating means and are expelled only into the previously generated plasma to prevent decomposition of the precursors.