Patent ID: 6638859
Filing Date: 2003-10-28
Classification: C23C

Abstract:
A method to perform atomic layer deposition comprising:pretreating a surface of a substrate or a material layer formed on the substrate by introducing a radical specie including any combination of O2, H2, H2O, NH3, NF3, N2, Cl and F to increase AHx termination sites on the surface, where x is an integer and A is a non-metal capable of bonding with hydrogen H; introducing a first precursor to deposit a first reactive specie on the surface, the surface when pretreated being more receptive to have additional bonding with the first reactive specie, due to the increase of AHx termination sites on the surface; and introducing a second precursor, after the bonding of the first reactive specie, to deposit a second reactive specie to react with the deposited first reactive specie to form a film layer.