Patent ID: 6642117
Filing Date: 2003-11-04
Classification: H01L

Abstract:
A method for forming a dielectric layer comprising:providing an oxidizable substrate; thermally oxidizing the oxidizable substrate to form a thermal oxide layer thereupon; depositing upon the thermal oxide layer a nitride layer to form a composite deposited nitride/thermal oxide stack layer upon the oxidizable substrate; annealing the composite deposited nitride/thermal oxide stack layer within a nitriding atmosphere to form therefrom a nitrided composite deposited nitride/thermal oxide stack layer; annealing the nitrided composite deposited nitride/thermal oxide stack layer within an oxidizing atmosphere to form therefrom an oxidized nitrided composite deposited nitride/thermal oxide stack layer; and treating the oxidized nitrided composite deposited nitride/thermal oxide stack layer with a vaporous hydrofluoric acid material.