Patent ID: 6607973
Filing Date: 2003-08-19
Classification: C23C,H01L

Abstract:
A process for forming a transistor, comprising:providing a semiconductor substrate; forming a high-k dielectric layer over the substrate by actions comprising: forming an atomic layer of a Group IVB metal by exposing the substrate to a gas comprising a Group IVB metal compound that undergoes a self-limiting reaction with the substrate; forming a first atomic layer of oxygen over the atomic layer of the Group IVB metal by exposing the substrate to a gas comprising an oxygen compound that undergoes a self-limiting reaction with the substrate; forming a first atomic layer of silicon over an atomic layer of oxygen by exposing the substrate to a gas comprising a silicon compound that undergoes a self-limiting reaction with the substrate; forming an atomic layer of nitrogen over the first atomic layer of silicon by exposing the substrate to a gas comprising a nitrogen compound that undergoes a self-limiting reaction with the substrate; forming a second atomic layer of oxygen over the atomic layer of nitrogen by exposing the substrate to a gas comprising the same or another oxygen compound that undergoes a self-limiting reaction with the substrate; and forming a gate over the high-k dielectric.