Patent ID: 7872838

Claim:
A process for the formation of a current confining layer, comprising: providing a substrate and depositing thereon a layer of copper; depositing a first layer of an oxidizable material on said copper layer; subjecting said first layer of oxidizable material to a first PIT process, lasting from near 0 to 500 seconds, followed by a first IAO process lasting from about 5 to 500 seconds; then depositing a second layer of an oxidizable material on said processed layer of a first oxidizable material; subjecting said second layer of oxidizable material to a second PIT process, lasting from near 0 to 500 seconds, followed by a second IAO process lasting from about 5 to 500 seconds; and optionally, depositing one or more additional layers of oxidizable material, each being subjected to said PIT and IAO processes, thereby forming said current confining layer.