Patent ID: 6723598
Filing Date: 2004-04-20
Classification: C23C,H01L

Abstract:
A method for manufacturing an aluminum oxide film for use in a semiconductor device, the method comprising the steps of:a) preparing a semiconductor substrate and setting the semiconductor substrate in a reaction chamber; b) supplying an aluminum source material and NH3 gas into the reaction chamber simultaneously for being absorbed on the semiconductor substrate; c) discharging an unreacted aluminum source material or by-product by flowing nitrogen gas into the reaction chamber or by vacuum purging; d) supplying an oxygen source material into the reaction chamber for being absorbed on the semiconductor substrate; e) discharging an unreacted oxygen source or by-product by flowing a nitrogen gas into the reaction chamber or by vacuum purging; f) removing carbon particles in the aluminum oxide film; and g) annealing the aluminum oxide film for densification thereof at 650Â° C. to 850Â° C. in N2 rich atmosphere.