Patent ID: 8568571

Claim:
A method of fabricating a thin film battery cathode layer, comprising: providing a sputtering target with an average composition of LiM a N b Z c , wherein 0.20>{b/(a+b)}>0, N is an alkaline earth element, M is selected from the group consisting of Co, Mn, Al, Ni and V, and Z is selected from the group consisting of (PO 4 ), O, F and N; and depositing said cathode layer on a substrate using a plasma enhanced physical vapor deposition process, said depositing comprising: applying power from a target power source to said sputtering target to generate a plasma between said sputtering target and said substrate; during applying power from said target power source to said sputtering target, applying power from an additional power source to at least one of said sputtering target, said plasma and said substrate; and controlling both said target power source and said additional power source to redirect plasma energy from ions in said plasma between said sputtering target and said substrate to ions travelling to said cathode layer for forming said cathode layer.