Patent ID: 9580802
Date: 2017-02-28
CPC Classifications: C23C,H01L

Claim:
1. A film formation method of performing a supply cycle of sequentially supplying at least two kinds of reactive gases, which are reactive with each other, to a surface of a substrate inside a vacuum container, and thereby laminating reaction product layers to form a thin film on the substrate, the method comprising: placing the substrate in an essentially horizontal state on a table inside the vacuum container, the substrate including a depressed portion formed thereon; adjusting a temperature of the substrate placed on the table to a temperature at which a first reactive gas is adsorbed and condensed; supplying the first reactive gas from a first reactive gas supply part to the substrate placed on the table, and thereby depositing a condensed substance of the first reactive gas on the substrate; rotating the table relative to the first reactive gas supply part; supplying a heated gas to the substrate to heat the substrate, and thereby partly vaporizing the condensed substance of the first reactive gas adsorbed on the substrate; supplying an auxiliary gas, which transforms the condensed substance of the first reactive gas adsorbed on the substrate into a derived substance less volatile than the condensed substance, to the substrate; and supplying a second reactive gas in an activated state to the substrate, and thereby causing the second reactive gas to react with the condensed substance adsorbed on the substrate to generate a reaction product.