Patent ID: 9312483
Filing Date: 2016-04-12
CPC Classification: H01L

Claim Text:
1. A resistive switching device for a non-volatile memory device, comprising: a substrate having a surface region; a first dielectric layer overlying the surface region of the substrate; a first wiring structure overlying the first dielectric layer; a junction layer overlying the first wiring structure; a resistive switching layer overlying the junction layer; an active metal layer overlying the resistive switching layer; an adhesion layer comprising a tungsten material overlying and in contact with the active metal layer; a diffusion barrier layer overlying and in contact with the adhesion layer, the diffusion barrier layer not including tungsten; a stack of material comprising the junction layer, the resistive switching layer, the active metal layer, and the adhesion layer, wherein the stack of material is characterized by a side wall with a reduced gap region between the diffusion barrier layer and the resistive switching layer; and a second wiring structure overlying the stack of material including the diffusion barrier layer.