Patent ID: 6893895
Filing Date: 2005-05-17
Classification: C25D

Abstract:
1. A method of making a memory cell, comprising: providing a partially fabricated memory structure comprising a patterned dielectric over a first electrode comprising at least copper; charging the partially fabricated memory structure into an electrochemical cell comprising a cathode and a passivation solution comprising a sulfide compound, the sulfide compound comprising at least one selected from the group consisting of ammonium sulfide, an alkylammonium sulfide, dimethylsulfide, benzylmethylsulfide, sodium sulfide, and lithium sulfide; applying a current density through the electrochemical cell so that a CuS layer is formed on the first electrode in portions not covered by the patterned dielectric; forming an organic semiconductor over the CuS layer; and forming a second electrode over the organic semiconductor.