Patent ID: 6673701
Filing Date: 2004-01-06
Classification: C23C,C30B

Abstract:
An atomic layer deposition method, comprising:positioning a semiconductor substrate within an atomic layer deposition chamber; flowing a first precursor gas to the substrate within the atomic layer deposition chamber effective to form a first monolayer on the substrate, said first precursor gas flowing comprising a plurality of first precursor gas pulses, the plurality of first precursor gas pulses comprising at least one total period of time between two immediately adjacent first precursor gas pulses when no gas is fed to the chamber; after forming the first monolayer on the substrate, flowing a second precursor gas different in composition from the first to the substrate within the deposition chamber effective to form a second monolayer on the first monolayer; and comprising flowing multiple time spaced inert purge gas pulses to the substrate within the deposition chamber intermediate the first precursor flowing and the second precursor flowing.