Atomic layer deposition of metal oxynitride layers as gate dielectrics and semiconductor device structures utilizing metal oxynitride layers
First Claim
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1. A method of forming a metal oxynitride layer, comprising:
- providing a semiconductor substrate; and
forming a metal oxynitride layer on a surface of the semiconductor substrate by atomic layer deposition.
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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.
603 Citations
47 Claims
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1. A method of forming a metal oxynitride layer, comprising:
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providing a semiconductor substrate; and
forming a metal oxynitride layer on a surface of the semiconductor substrate by atomic layer deposition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of forming a metal oxynitride layer, comprising:
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providing a semiconductor substrate; and
separately introducing a plurality of gaseous precursors to a surface of the semiconductor substrate, the plurality of gaseous precursors comprising a metal gaseous precursor and at least two nonmetallic gaseous precursors. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method of forming a semiconductor device structure, comprising:
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providing a semiconductor substrate;
forming a metal oxynitride gate dielectric layer by atomic layer deposition on a surface of the semiconductor substrate; and
forming a gate over the metal oxynitride gate dielectric layer. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A semiconductor device structure, comprising:
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a semiconductor substrate;
a metal oxynitride gate dielectric layer comprising a plurality of reacted monolayers on a surface of the semiconductor substrate; and
a gate over the metal oxynitride gate dielectric layer. - View Dependent Claims (30, 31, 32)
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33. An atomic deposition layer, comprising:
a metal oxynitride layer comprising a plurality of reacted monolayers. - View Dependent Claims (34, 35, 36)
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37. A semiconductor device structure comprising a metal oxynitride layer formed by the process comprising:
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providing a semiconductor substrate; and
forming the metal oxynitride layer on a surface of the semiconductor substrate by separately introducing a plurality of gaseous precursors to the surface of the semiconductor substrate. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A method of forming a metal oxynitride layer, comprising:
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providing a semiconductor substrate;
interacting a plurality of gaseous precursors with a surface of the semiconductor substrate to form a plurality of metal, oxide, and nitride monolayers thereon; and
reacting the plurality of metal, oxide, and nitride monolayers to form the metal oxynitride layer.
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Specification