Patent ID: 9159914
Filing Date: 2015-10-13
Classification: H01L

Abstract:
1. A nonvolatile memory device comprising: first and second electrodes on a substrate; a data storage layer between the first electrode and the second electrode, the data storage layer including (a) a transition metal oxide layer comprising a transition metal oxide and (b) a transition metal layer comprising a transition metal, wherein the transition metal oxide comprises oxygen bonded to a transition metal element that is a match of the transition metal of the transition metal layer; and at least one metal oxide layer between the transition metal layer and at least one of the first and second electrodes, the metal oxide layer being in direct contact with the transition metal layer and comprising a metal oxide, wherein a bond energy between a metal element and oxygen in the metal oxide layer is greater than a bond energy between a transition metal element and oxygen in the data storage layer, and wherein a conductive filament is formed in the transition metal layer when an external electric field is applied to the data storage layer.