Patent ID: 6777348
Filing Date: 2004-08-17
Classification: H01L

Abstract:
A method of forming an oxynitride film, comprising:loading a silicon substrate into an oxidization furnace; injecting an oxygen based source gas into the oxidization furnace to grow a pure silicon oxide film on the silicon substrate; stopping the injection of the oxygen based source gas and injecting inert gas into the furnace to purge the oxygen based source gas remaining within the oxidization furnace; raising a temperature within the oxidization furnace to a nitrification process temperature; stabilizing the temperature within the oxidization furnace; implementing a nitrification process for the pure silicon oxide film by injecting a nitrogen based source gas; and stopping the injection of the nitrogen based source gas raising the temperature of the oxidization furnace to a temperature higher than the temperature at which the nitrification process is implemented before rapidly cooling the oxidization furnace while injecting inert gas into the oxidization furnace to thereby purge the nitrogen based source remaining in the furnace.