Patent ID: 7402518
Filing Date: 2008-07-22
Classification: C23C,H01L

Abstract:
1. An atomic layer deposition method, comprising; providing a semiconductor substrate within an atomic layer deposition chamber; flowing a first precursor gas to the substrate within the chamber effective to form a first monolayer on the substrate; after forming the first monolayer, flowing a second precursor gas to the substrate under plasma conditions within the chamber effective to form a second monolayer on the substrate which is different in composition from the first monolayer, the second precursor gas being different in composition from the first precursor gas, plasma generation of the second precursor gas within the chamber occurring from a second applied power of energy to the chamber, and further comprising applying a steady state first applied power of said energy to the chamber prior to applying said second applied power of said energy, the steady state first applied power being less than the second applied power and increasing the first applied power to said second applied power, said increasing commencing prior to commencing the second precursor gas flowing.