Patent ID: 8759234

Claim:
A method for manufacturing a semiconductor device, the method comprising: introducing a first precursor to a deposition chamber for a first time; introducing a first purge gas to the deposition chamber for a second time after the introducing the first precursor, wherein the second time is larger than the first time; introducing a second precursor to the deposition chamber for a third time after the introducing the first purge gas, wherein the third time is larger than or equal to the first time; introducing a second purge gas to the deposition chamber for a fourth time after the introducing the second precursor; introducing the first precursor to the deposition chamber for a fifth time, the introducing the first precursor to the deposition chamber for the fifth time occurring after the introducing the second purge gas to the deposition chamber; introducing a third purge gas to the deposition chamber for a sixth time, the sixth time being less than the second time; introducing the second precursor to the deposition chamber for a seventh time, the seventh time being less than the third time; and introducing a fourth purge gas to the deposition chamber for an eighth time, the eighth time being less than the fourth time.