Abstract: Provided is a plasma processing apparatus wherein an electrode embedded in a mounting table is supplied with high frequency power for biasing. A surface, which is exposed to plasma and is of an aluminum cover functioning as an opposite electrode to the electrode of the mounting table, is coated with a protection film, preferably a Y2O3 film. A second portion forming an upper side portion of the processing chamber and a first portion forming a lower side portion of the processing container are provided with an insulating upper liner and an insulating lower liner thicker than the upper liner, respectively. Thus, undesirable short-circuits and abnormal electrical discharge are prevented and stable high-frequency current path is formed.

Abstract: A selective oxidation treatment method in which plasma of a hydrogen gas and an oxygen containing gas is allowed to act on an object to be treated, and in which silicon and a metallic material are exposed in the surface, within a treatment container of a plasma treatment apparatus comprises: after the supply of the hydrogen gas from a hydrogen gas supply source is initiated by using a first inert gas, which passes through a first supply path, as a carrier gas, initiating the supply of the oxygen containing gas from an oxygen containing gas supply source by using a second inert gas, which passes through a second supply path, as a carrier gas before the plasma is ignited; igniting the plasma of a treatment gas including the oxygen containing gas and the hydrogen gas within the treatment container; and selectively oxidizing the silicon by the plasma.

Abstract: Provided is a plasma processing apparatus wherein an electrode embedded in a mounting table is supplied with high frequency power for biasing. A surface, which is exposed to plasma and is of an aluminum cover functioning as an opposite electrode to the electrode of the mounting table, is coated with a protection film, preferably a Y2O3 film. A second portion forming an upper side portion of the processing chamber and a first portion forming a lower side portion of the processing container are provided with an insulating upper liner and an insulating lower liner thicker than the upper liner, respectively. Thus, undesirable short-circuits and abnormal electrical discharge are prevented and stable high-frequency current path is formed.

Abstract: In a substrate processing apparatus for performing a plasma process on a substrate including a tungsten-containing film, cleaning is performed for a process chamber. This cleaning includes, after the plasma process, supplying a gas containing O2 into the process chamber without setting the process chamber opened to the atmosphere, and generating plasma of the gas to clean the process chamber.

Abstract: A silicon oxide film forming method includes a step of placing an object to be processed and having a surface having a projecting/recessed pattern and containing silicon in a processing vessel of a plasma processing apparatus, a step of producing a plasma from a processing gas containing oxygen at a proportion of 5 to 20% under a processing pressure of 267 to 400 Pa in the processing vessel, and a step of forming a silicon oxide film by oxidizing silicon in the surface of the object to be processed by the plasma.

Abstract: In a substrate processing apparatus for performing a plasma process on a substrate including a tungsten-containing film, cleaning is performed for a process chamber. This cleaning includes, after the plasma process, supplying a gas containing O2 into the process chamber without setting the process chamber opened to the atmosphere, and generating plasma of the gas to clean the process chamber.