Patent ID: 6059938
Filing Date: 2000-05-09
Classification: C23C

Abstract:
A method of providing a layer of a material on a substrate, comprising the steps of:(a) during a given process time subjecting a target electrode plate to ionic bombardment from a discharge of gas flowing past said target plate, thereby detaching material from said target plate;(b) during at least a portion of said process time also subjecting surfaces of chamber components near a substrate support to ionic bombardment from said gas discharge, the gas discharge being at reduced pressure in a reactor chamber containing said target electrode, said chamber components and said substrate support, so that material detached from the target electrode is deposited on the surfaces of said chamber components during ionic bombardment thereof and thereby forms an ion plated layer of said material on said surfaces; and(c) still during said process time but following formation of said ion plated layer on said surfaces, depositing a layer of detached material from the target electrode on a substrate on said substrate support in said chamber, contamination of said substrate by detachment of material from the surfaces of said chamber components being substantially avoided as a result of improved adhesion of material deposited on said surfaces following formation of said ion plated layer thereon.