Patent ID: 9184383
Filing Date: 2015-11-10
Classification: H01L

Abstract:
1. A method of forming a nonvolatile memory element, the method comprising: forming a first electrode layer; forming a first interface layer over the first electrode layer; forming a variable resistance layer over the first interface layer; and forming a second electrode layer over the variable resistance layer; forming a second interface layer between the variable resistance layer and the first interface layer; wherein the first interface layer comprises a dielectric material; wherein the first interface layer and the second interface layer have different compositions; wherein the first interface layer comprises aluminum oxide, and wherein the second interface layer comprises aluminum; wherein the variable resistance layer comprises a variable resistance material; wherein a band gap of the dielectric material is greater than a band gap of the variable resistance material; and wherein the first interface layer has a thickness of between about 8 Å and about 20 Å.