Silver selenide film stoichiometry and morphology control in sputter deposition
AssigneeMicron Technology, Inc.
InventorsJiutao Li, Keith Hampton, Allen McTeer
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Abstract
A method of sputter depositing silver selenide and controlling the stoichiometry and nodular defect formations of a sputter deposited silver-selenide film. The method includes depositing silver-selenide using a sputter deposition process at a pressure of about 0.3 mTorr to about 10 mTorr. In accordance with one aspect of the invention, an RF sputter deposition process may be used preferably at pressures of about 2 mTorr to about 3 mTorr. In accordance with another aspect of the invention, a pulse DC sputter deposition process may be used preferably at pressures of about 4 mTorr to about 5 mTorr.
Claims20
1-75. (canceled)
A method of forming a memory device comprising sputtering a silver-selenide sputter target to form a silver-selenide film over a substrate, wherein a silver concentration of the silver-selenide film is substantially the same as a silver concentration of the silver-selenide sputter target.
A method of forming a silver-selenide film comprising sputtering a silver-selenide sputter target, having a formula of AgySe, to form the silver-selenide film, having a formula of AgxSe, over a substrate, wherein the value of x is substantially the same as the value of y.
Dependencies are inferred from the claim text.