Patent ID: 9023740
Filing Date: 2015-05-05
Classification: H01L,H05B

Abstract:
1. A method of irradiating a substrate with a high dielectric constant film formed thereon with light to heat the substrate, thereby promoting the crystallization of said high dielectric constant film, said method comprising the steps of: (a) irradiating a surface of the substrate with said high dielectric constant film formed thereon with a flash of light from a flash lamp to heat the surface of said substrate including said high dielectric constant film to a first temperature; and (b) irradiating said substrate with light from a halogen lamp to maintain the temperature of said substrate at a second temperature lower than said first temperature, said step (b) being performed in an atmosphere containing any gas selected from the group consisting of hydrogen, ammonia, hydrogen chloride, sulfur dioxide, nitrous oxide, and hydrogen sulfide.