Patent ID: 11908682
Assignee: KOKUSAI ELECTRIC CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 14:
15. A substrate processing apparatus comprising:
a process chamber in which a substrate is processed;
a gas supplier configured to supply an oxygen-containing gas into the process chamber;
a heater capable of heating the substrate arranged in the process chamber;
a plasma generator configured to excite the oxygen-containing gas supplied into the process chamber to generate a plasma; and
a controller capable of controlling the gas supplier, the heater and the plasma generator to perform:
(a) forming a first oxide layer by modifying a surface of the substrate in the process chamber at a first temperature with a plasma of a first oxygen-containing gas; and
(b) forming a second oxide layer thicker than the first oxide layer by heating the substrate to a second temperature higher than the first temperature and modifying the surface of the substrate, on which the first oxide layer is formed, with a plasma of a second oxygen-containing gas.