Patent ID: 9203022
Filing Date: 2015-12-01
Classification: H01L

Abstract:
1. A resistive switching device, comprising: a first electrode selected from the group consisting of Pt, Mo, W, Cu, Ag, Au, TiN, Pd and combinations thereof; a transition metal oxide layer formed on and physically contacting the first electrode, the transition metal oxide layer having a composition selected from the group consisting of hafnium dioxide, zirconium dioxide, and combinations thereof; and an oxygen scavenging electrode formed on the transition metal oxide, the oxygen scavenging electrode having a different composition than the first electrode, the oxygen scavenging electrode selected from the group consisting of Er, La, Y, Yb, Sc, Ce, Pr, Nd, Sm, Dy, Ho, Tm, Lu and combinations thereof, wherein the oxygen scavenging electrode removes oxygen from the transition metal oxide layer to increase formation of oxygen vacancies in the transition metal oxide layer to enable a switching mode when a bias is applied between the first electrode and the oxygen scavenging electrode.