There is provided a thin film manufacturing method which allows both a reduction in the carbon impurity concentration and a high film forming speed, as well as allows separate formation of stable crystal structures. There is provided a method for manufacturing an oxide crystal thin film. The method includes carrying raw material fine particles to a film forming chamber by means of a carrier gas, the raw material fine particles being formed from a raw material solution including water and at least one of a gallium compound and an indium compound, and forming an oxide crystal thin film on a sample on which films are to be formed, the sample being placed in the film forming chamber. At least one of the gallium compound and the indium compound is bromide or iodide.

There is provided a thin film manufacturing method which allows both a reduction in the carbon impurity concentration and a high film forming speed, as well as allows separate formation of stable crystal structures. There is provided a method for manufacturing an oxide crystal thin film. The method includes carrying raw material fine particles to a film forming chamber by means of a carrier gas, the raw material fine particles being formed from a raw material solution including water and at least one of a gallium compound and an indium compound, and forming an oxide crystal thin film on a sample on which films are to be formed, the sample being placed in the film forming chamber. At least one of the gallium compound and the indium compound is bromide or iodide.

There is provided a semiconductor manufacturing device, including: a processing vessel; a partition wall that divides at least a part of a space in the processing vessel into a growth section and a cleaning section; a substrate holding member disposed in the growth section; a source gas supply system that supplies a source gas into the growth section; a cleaning gas supply system that supplies a cleaning gas into the cleaning section; and a heater that heats the growth section and the cleaning section.

There is provided a semiconductor manufacturing device, including: a processing vessel; a partition wall that divides at least a part of a space in the processing vessel into a growth section and a cleaning section; a substrate holding member disposed in the growth section; a source gas supply system that supplies a source gas into the growth section; a cleaning gas supply system that supplies a cleaning gas into the cleaning section; and a heater that heats the growth section and the cleaning section.

A vapor phase growth apparatus includes: a reaction chamber; a support provided in the reaction chamber, the support on which a substrate can be placed; a first gas supply passage supplying first gas including ammonia; a second gas supply passage supplying second gas including metal-organic gas; a purge gas supply passage supplying purge gas including ammonia and at least one selected from nitrogen, hydrogen, and inert gas; and a shower head including first region and second region provided around the first region, process gas ejection holes provided in the first region, connected to the first gas supply passage and second gas supply passage and through which the first gas and second gas are supplied into the reaction chamber, a purge gas ejection hole provided in the second region, connected to the purge gas supply passage and through which purge gas is supplied into the reaction chamber.

A vapor phase growth apparatus includes: a reaction chamber; a support provided in the reaction chamber, the support on which a substrate can be placed; a first gas supply passage supplying first gas including ammonia; a second gas supply passage supplying second gas including metal-organic gas; a purge gas supply passage supplying purge gas including ammonia and at least one selected from nitrogen, hydrogen, and inert gas; and a shower head including first region and second region provided around the first region, process gas ejection holes provided in the first region, connected to the first gas supply passage and second gas supply passage and through which the first gas and second gas are supplied into the reaction chamber, a purge gas ejection hole provided in the second region, connected to the purge gas supply passage and through which purge gas is supplied into the reaction chamber.

A method of forming a silicon layer includes introducing a source gas containing a precursor material and a carrier gas into a reactor, controlling a gas flow of the source gas through a first main flow controller unit in response to a change of a concentration of the precursor material in the source gas, introducing an auxiliary gas into the reactor, and controlling a gas flow of the auxiliary gas through a second main flow controller unit such that a total gas flow of the source gas and the auxiliary gas into the reactor is held constant when the gas flow of the source gas changes.

According to one embodiment, an epitaxial growth apparatus includes a processing chamber, an exhaust pipe, and an introducing pipe. The exhaust pipe is communicated with the processing chamber. The introducing pipe is communicated with the exhaust pipe and an alkaline gas is introduced into the exhaust pipe via the introducing pipe.

According to one embodiment, an epitaxial growth apparatus includes a processing chamber, an exhaust pipe, and an introducing pipe. The exhaust pipe is communicated with the processing chamber. The introducing pipe is communicated with the exhaust pipe and an alkaline gas is introduced into the exhaust pipe via the introducing pipe.

A method for manufacturing a silicon carbide epitaxial substrate includes: a step of placing a silicon carbide single crystal substrate within a chamber and reducing a pressure within the chamber; a step of increasing a temperature within the chamber to a first temperature; a step of introducing hydrogen gas into the chamber and adjusting the pressure within the chamber; a step of introducing hydrocarbon gas into the chamber; a substrate reforming step of increasing the temperature within the chamber to a second temperature and holding the temperature at the second temperature for a predetermined time, with the adjusted pressure within the chamber and a flow rate of the hydrogen gas being maintained and the hydrocarbon gas being introduced; and a step of growing an epitaxial layer on the silicon carbide single crystal substrate by introducing silane gas into the chamber with the second temperature being maintained.