Three-terminal neuromorphic vertical sensing

Patent metadata

Field	Value
Publication number	US-10936944-B2
Application number	US-201916548106-A
Country	US
Kind code	B2
Filing date	Aug 22, 2019
Priority date	Jun 6, 2018
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

A neuromorphic device includes a first electrode layer arranged on a substrate, and an electrolyte layer arranged on the first electrode layer. The electrolyte layer includes a solid electrolyte material. The neuromorphic device further includes an ion permeable, electrically conductive membrane arranged on the electrolyte layer and an ion intercalation layer arranged on the ion permeable, electrically conductive membrane. The neuromorphic device includes a second electrode layer arranged on the ion intercalation layer.

First claim

What is claimed is:

1. A neuromorphic device comprising:
an electrolyte layer arranged on a gate electrode;
a drain electrode arranged on the electrolyte layer, the drain electrode comprising a porous material;
an ion intercalation layer arranged on the drain electrode; and
a source electrode arranged on the ion intercalation layer.

2. The neuromorphic device of claim 1 further comprising a second ion intercalation layer arranged between the electrolyte layer and the gate electrode, and the second ion intercalation layer comprises lithium cobalt oxide.

3. The neuromorphic device of claim 2 , wherein the electrolyte layer comprises a solid electrolyte material.

4. The neuromorphic device of claim 1 , wherein the drain electrode comprises a patterned material.

5. The neuromorphic device of claim 1 , wherein the ion intercalation layer is titanium oxide, tungsten oxide, lithium cobalt oxide, or a combination thereof.

6. The neuromorphic device of claim 1 , wherein the drain electrode comprises an ion permeable, electrically conductive membrane.

7. The neuromorphic device of claim 1 , wherein the drain electrode is carbon, metal, or a combination thereof.

8. The neuromorphic device of claim 1 , wherein the electrolyte layer comprises lithium phosphorus oxynitride.

9. A neuromorphic device comprising:
an electrolyte layer arranged on a gate electrode, the electrolyte layer comprising an ion permeable layer;
a drain electrode arranged on the electrolyte layer;
an ion intercalation layer arranged on the drain electrode; and
a source electrode arranged on the ion intercalation layer.

10. A neuromorphic device comprising:
an ion intercalation layer arranged on a first electrode layer;
an electrolyte layer arranged on the ion intercalation layer; and
an ion permeable membrane arranged on the electrolyte layer, the ion permeable membrane forming a drain electrode.

11. The neuromorphic device of claim 10 , wherein the electrolyte layer comprises a solid electrolyte material.

12. The neuromorphic device of claim 10 , wherein the ion permeable membrane is carbon, metal, or a combination thereof.

13. The neuromorphic device of claim 10 wherein the ion permeable membrane is electrically conductive.

14. The neuromorphic device of claim 10 , wherein the first electrode layer forms a source electrode.

15. The neuromorphic device of claim 10 , wherein the ion intercalation layer is titanium oxide, tungsten oxide, lithium cobalt oxide, or a combination thereof.

16. The neuromorphic device of claim 10 , wherein the electrolyte layer comprises lithium phosphorus oxynitride.

Assignees

• IBM

Inventors

• Todorov Teodor K
• Rozen John
• Bishop Douglas M

Classifications

• G06N3/065 Primary

  Analogue means · CPC title

• H01L45/1608

  Electricity · mapped topic

• G06N3/0635 Primary

  Physics · mapped topic

• H01L45/1206

  Electricity · mapped topic

• H01L45/145

  Electricity · mapped topic