OXIDATION METHOD OF SEMICONDUCTOR DEVICE

摘要

A method for growing a thermal oxide layer in a formation of a semiconductor device is disclosed. The A method for growing a thermal oxide layer in a formation of a semiconductor device comprises the steps of: a) performing a first dry oxidation using oxygen gas at a predetermined temperature in a oxidation tube; b) performing a wet oxidation using oxygen/hydrogen gas; c) performing a second oxidation using oxygen gas. Thereby, high pressure of processing tube is kept and the processing time is reduced and a processing temperature is lowered. In addition, the gas amount of nitrogen is automatically controlled, resulting in obtaining a high quality of oxidation.