Patent ID: 6815286
Filing Date: 2004-11-09
Classification: B82Y,G11C,H01L

Abstract:
A method for forming a reversibly programmable memory comprising at least one memory cell, the method comprising:forming a first conductive electrode layer made of copper; exposing the first conductive electrode layer to a gas suitable to form a passive layer including copper sulfide on the first conductive electrode layer, the passive layer being a superionic material adapted to reversibly donate and accept charged species, the charged species including ions or ions and elections; forming an active layer including an organic polymer over the passive layer, the organic polymer having a reversibly variable electrical conductivity upon the introduction and removal of charged species from the passive layer, the organic polymer having a relatively lower electrical conductivity when free of charged species and a relatively higher electrical conductivity when charged species are introduced into the organic polymer; and forming a second conductive electrode layer over the active layer.