Atomic layer deposition of metal oxynitride layers as gate dielectrics
First Claim
Patent Images
1. A method of forming a metal oxynitride layer, comprising:
- providing a semiconductor substrate; and
forming a layer that consists of a metal oxynitride in contact with a surface of the semiconductor substrate by atomic layer deposition, wherein the layer has a uniform composition, wherein the layer consists of a metal, oxygen, and nitrogen, and wherein the layer is a metal oxynitride selected from the group consisting of zirconium oxynitride, hafnium oxynitride, and mixtures thereof.
0 Assignments
0 Petitions
Accused Products
Abstract
A metal oxynitride layer formed by atomic layer deposition of a plurality of reacted monolayers, the monolayers comprising at least one each of a metal, an oxide and a nitride. The metal oxynitride layer is formed from zirconium oxynitride, hafnium oxynitride, tantalum oxynitride, or mixtures thereof. The metal oxynitride layer is used in gate dielectrics as a replacement material for silicon dioxide. A semiconductor device structure having a gate dielectric formed from a metal oxynitride layer is also disclosed.
-
Citations
16 Claims
-
1. A method of forming a metal oxynitride layer, comprising:
-
providing a semiconductor substrate; and
forming a layer that consists of a metal oxynitride in contact with a surface of the semiconductor substrate by atomic layer deposition, wherein the layer has a uniform composition, wherein the layer consists of a metal, oxygen, and nitrogen, and wherein the layer is a metal oxynitride selected from the group consisting of zirconium oxynitride, hafnium oxynitride, and mixtures thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method of forming a semiconductor device structure, comprising:
-
providing a semiconductor substrate;
forming a gate dielectric layer that consists of a metal oxynitride in contact with a surface of the semiconductor substrate by atomic layer deposition, wherein the gate dielectric layer has a uniform composition, wherein the gate dielectric layer consists of a metal, oxygen, and nitrogen, and wherein the gate dielectric layer is a metal oxynitride selected from the group consisting of zirconium oxynitride, hafnium oxynitride layer, and mixtures thereof; and
forming a gate over the gate dielectric layer. - View Dependent Claims (9, 10, 11, 12, 13)
-
-
14. A method of forming a metal oxynitride layer, comprising:
-
providing a semiconductor substrate; and
reacting a plurality of monolayers to form a metal oxynitride layer that consists of a metal, oxygen, and nitrogen, wherein the metal oxynitride layer comprises a uniform composition and wherein the metal oxynitride layer is a metal oxynitride selected from the group consisting of zirconium oxynitride, hafnium oxynitride layer, and mixtures thereof. - View Dependent Claims (15, 16)
-
Specification