Patent ID: 9680091
Date: 2017-06-13
CPC Classifications: H01L

Claim:
1. A method of making a resistive random access memory (RRAM) structure, comprising: forming a bottom electrode on a substrate; forming a first dielectric material layer on the bottom electrode; selectively performing a defect engineering treatment (DET) process on a first portion of the first dielectric material layer to form a defect engineering film in the first dielectric material layer without performing the DET process on a second portion of the first dielectric material layer, wherein the performing the DET process includes applying NH forming a capping layer directly on the first dielectric material layer, wherein the forming the capping layer deprives oxygen from the first dielectric material layer using the capping layer; and forming a top electrode on the first dielectric material layer; and annealing the substrate including the top electrode, first dielectric material layer, the capping layer, and the bottom electrode; wherein one or more of the selectively performing the DET treatment, the forming the capping layer, and the performing the anneal generates oxygen vacancies in the first dielectric material layer such that the RRAM structure has a characteristic of a complementary resistive switching (CRS) device.