Patent ID: 7754563
Filing Date: 2010-07-13
Classification: H01L

Abstract:
1. A method of forming a dielectric film on a semiconductor substrate held in a reaction chamber, the method comprising: repeating, a plurality of times, a sequence of steps comprising a first deposition step, a first purging step, a second deposition step and a second purging step in that order, to form a dielectric film having a predetermined thickness: the first deposition step performing molecular layer deposition to form a first metal oxide film by simultaneously supplying a first metal material gas and an oxidizing gas to the reaction chamber; the first purging step of purging the first metal material gas and the oxidizing gas out of the reaction chamber; the second deposition step performing molecular layer deposition to form a second metal oxide film by simultaneously supplying a second metal material gas and an oxidizing gas to the reaction chamber; and the second purging step of purging the second metal material gas and the oxidizing gas out of the reaction chamber.