Patent ID: 7271077

Claim:
A deposition method comprising: positioning a semiconductor substrate within a deposition chamber; flowing a first precursor gas within the deposition chamber to form a first monolayer on the substrate, said first precursor gas flowing comprising a plurality of first precursor gas pulses, at least two of the plurality of first precursor gas pulses separated by a period of time 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 precursor gas within the deposition chamber to form a second monolayer on the first monolayer; and flowing multiple time spaced inert purge gas pulses within the deposition chamber intermediate the flowing of the first precursor gas and the second precursor gas, said multiple time spaced inert purge gas pulses being characterized by a period of time between two adjacent of the multiple time spaced inert purge gas pulses which is void of flowing the first precursor gas and the second precursor gas to the chamber.