Conductive Metal Oxide Barrier Layer for Correlated Electron Switches

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Solution Overview

Problem

Correlated electron switch devices face challenges in maintaining conductivity and preventing oxidation and carbon diffusion, which can lead to non-conductive interface layers and degraded performance.

Innovation Solution

Incorporating barrier layers, such as conductive metal oxides, to prevent oxidation of electrodes and carbon diffusion, thereby maintaining the integrity of correlated electron materials and ensuring consistent impedance switching.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If barrier layers are incorporated to prevent oxidation and carbon diffusion, then reliability is improved, but device complexity increases

Engineering Contradiction:
Improvedevice performance consistencyVSAvoidlayer structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A barrier layer comprising a conductive metal oxide is introduced as an intermediary component between the electrode and the correlated electron material. This barrier layer serves as a mediator that prevents direct interaction between the electrode and the correlated electron material, thereby blocking oxidation and carbon diffusion while maintaining electrical conductivity. The barrier layer acts as a protective interface that resolves the contradiction by adding a functional element rather than modifying existing components

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The barrier layer is formed using a composite material approach, specifically a conductive metal oxide that combines the properties of both protection (against oxidation and carbon diffusion) and electrical conductivity. This composite material enables the barrier layer to simultaneously fulfill multiple functions: preventing degradation of the correlated electron material while maintaining the electrical pathway, thus improving reliability without requiring multiple separate layers

Inventive Principle:
Principle #40Composite materials

2Reliability

If barrier layers are used to prevent formation of non-conductive layers, then conductivity is maintained, but manufacturing complexity increases

Engineering Contradiction:
Improveconductivity maintenanceVSAvoidfabrication process complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The barrier layer is formed prior to the formation of the correlated electron material, serving as a pre-established protective interface. This preliminary action ensures that the electrode is protected from oxidation and carbon diffusion before the correlated electron material is deposited, preventing the formation of non-conductive layers at the interface. By performing the protective function in advance, the need for additional corrective manufacturing steps is eliminated

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The conductive metal oxide barrier layer serves as an intermediary that facilitates the manufacturing process by providing a stable, non-reactive interface between the electrode and the correlated electron material. This intermediary layer prevents direct chemical reactions during fabrication, ensuring consistent conductivity without requiring complex post-processing or quality control measures

Inventive Principle:
Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The barrier layers effectively prevent the formation of non-conductive layers, enhance device performance by maintaining conductivity, and ensure reliable impedance switching in correlated electron switch devices.

Implementation Method 1

Incorporating barrier layers, such as conductive metal oxides, to prevent oxidation of electrodes

Methodology Applied
Scientific EffectPhysical barrier:

Implementation Method 2

Incorporating barrier layers, such as conductive metal oxides, to prevent oxidation of electrodes and carbon diffusion

Methodology Applied
Scientific EffectDiffusion barrier: Diffusion Barrier

Data Source

PatentUS10014468B2Barrier layer for correlated electron material
Publication Date: 2018.07.03 CERFE LABS INC
  • US10014468B2 patent drawing
  • US10014468B2 patent drawing
  • US10014468B2 patent drawing

AI summary

Subject matter disclosed herein may relate to correlated electron switch devices, and may relate more particularly to one or more barrier layers having various characteristics formed under and/or over and/or around correlated electron material.