WO2017199570A1 - クリーニング方法、半導体装置の製造方法、基板処理装置およびプログラム - Google Patents
クリーニング方法、半導体装置の製造方法、基板処理装置およびプログラム Download PDFInfo
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- WO2017199570A1 WO2017199570A1 PCT/JP2017/011122 JP2017011122W WO2017199570A1 WO 2017199570 A1 WO2017199570 A1 WO 2017199570A1 JP 2017011122 W JP2017011122 W JP 2017011122W WO 2017199570 A1 WO2017199570 A1 WO 2017199570A1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P70/00—Cleaning of wafers, substrates or parts of devices
- H10P70/10—Cleaning before device manufacture, i.e. Begin-Of-Line process
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/4401—Means for minimising impurities, e.g. dust, moisture or residual gas, in the reaction chamber
- C23C16/4405—Cleaning of reactor or parts inside the reactor by using reactive gases
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/56—After-treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/63—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the formation processes
- H10P14/6326—Deposition processes
- H10P14/6328—Deposition from the gas or vapour phase
- H10P14/6334—Deposition from the gas or vapour phase using decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H10P14/6338—Deposition from the gas or vapour phase using decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition the reactions being activated by other means than plasma or thermal, e.g. photo-CVD
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/63—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the formation processes
- H10P14/6326—Deposition processes
- H10P14/6328—Deposition from the gas or vapour phase
- H10P14/6334—Deposition from the gas or vapour phase using decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H10P14/6339—Deposition from the gas or vapour phase using decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition deposition by cyclic CVD, e.g. ALD, ALE or pulsed CVD
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/66—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials
- H10P14/668—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials
- H10P14/6681—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials the precursor containing a compound comprising Si
- H10P14/6682—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the type of materials the materials being characterised by the deposition precursor materials the precursor containing a compound comprising Si the compound being a silane, e.g. disilane, methylsilane or chlorosilane
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/69—Inorganic materials
- H10P14/692—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses
- H10P14/6921—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses containing silicon
- H10P14/6922—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses containing silicon the material containing Si, O and at least one of H, N, C, F or other non-metal elements, e.g. SiOC, SiOC:H or SiONC
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P50/00—Etching of wafers, substrates or parts of devices
- H10P50/20—Dry etching; Plasma etching; Reactive-ion etching
- H10P50/24—Dry etching; Plasma etching; Reactive-ion etching of semiconductor materials
- H10P50/242—Dry etching; Plasma etching; Reactive-ion etching of semiconductor materials of Group IV materials
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/04—Apparatus for manufacture or treatment
- H10P72/0402—Apparatus for fluid treatment
- H10P72/0406—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/04—Apparatus for manufacture or treatment
- H10P72/0402—Apparatus for fluid treatment
- H10P72/0418—Apparatus for fluid treatment for etching
- H10P72/0421—Apparatus for fluid treatment for etching for drying etching
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P72/00—Handling or holding of wafers, substrates or devices during manufacture or treatment thereof
- H10P72/04—Apparatus for manufacture or treatment
- H10P72/0431—Apparatus for thermal treatment
Definitions
- the present invention relates to a cleaning method, a semiconductor device manufacturing method, a substrate processing apparatus, and a program.
- a film forming process for forming a film on a substrate housed in a processing container may be performed.
- a cleaning process may be performed in which a cleaning gas is supplied into the processing container after the film formation process to remove deposits attached to the processing container.
- An object of the present invention is to provide a technique capable of improving the cleaning efficiency in a processing container after performing a film forming process.
- FIG. 2 is a schematic configuration diagram of a part of a vertical processing furnace of a substrate processing apparatus suitably used in an embodiment of the present invention, and is a diagram showing a part of the processing furnace as a cross-sectional view taken along line AA of FIG.
- the controller of the substrate processing apparatus used suitably by embodiment of this invention, and is a figure which shows the control system of a controller with a block diagram. It is a figure which shows the sequence of the film-forming process in one Embodiment of this invention.
- the processing furnace 202 has a heater 207 as a heating mechanism (temperature adjustment unit).
- the heater 207 has a cylindrical shape and is vertically installed by being supported by a holding plate.
- the heater 207 also functions as an activation mechanism (excitation unit) that activates (excites) gas with heat.
- a reaction tube 203 is disposed inside the heater 207 concentrically with the heater 207.
- the reaction tube 203 is made of a heat-resistant material such as quartz (SiO 2 ), for example, and has a cylindrical shape with the upper end closed and the lower end opened.
- a manifold 209 is disposed below the reaction tube 203 concentrically with the reaction tube 203.
- the manifold 209 is made of a metal material such as stainless steel (SUS), for example, and has a cylindrical shape with an upper end and a lower end opened. The upper end portion of the manifold 209 is engaged with the lower end portion of the reaction tube 203 and is configured to support the reaction tube 203.
- An O-ring 220a as a seal member is provided between the manifold 209 and the reaction tube 203.
- the reaction tube 203 is installed vertically like the heater 207.
- the reaction vessel 203 and the manifold 209 mainly constitute a processing vessel (reaction vessel).
- a processing chamber 201 is formed in the hollow cylindrical portion of the processing container.
- the processing chamber 201 is configured to accommodate a wafer 200 as a substrate.
- nozzles 249a to 249c are provided so as to penetrate the side wall of the manifold 209.
- Gas supply pipes 232a to 232c are connected to the nozzles 249a to 249c, respectively.
- the gas supply pipes 232a to 232c are provided with mass flow controllers (MFC) 241a to 241c, which are flow rate controllers (flow rate control units), and valves 243a to 243c, which are on-off valves, in order from the upstream side of the gas flow.
- MFC mass flow controllers
- valves 243a to 243c which are on-off valves, in order from the upstream side of the gas flow.
- Gas supply pipes 232d to 232f for supplying an inert gas are connected to the gas supply pipes 232a to 232c on the downstream side of the valves 243a to 243c, respectively.
- the gas supply pipes 232d to 232f are respectively provided with MFCs 241d to 241f and valves 243d to 243f in order from the upstream side of the gas flow.
- the nozzles 249a to 249c are arranged in an annular space in a plan view between the inner wall of the reaction tube 203 and the wafer 200, along the upper part from the lower part of the inner wall of the reaction tube 203. Each is provided so as to rise upward in the stacking direction. That is, the nozzles 249a to 249c are provided along the wafer arrangement area in the area horizontally surrounding the wafer arrangement area on the side of the wafer arrangement area where the wafers 200 are arranged. Gas supply holes 250a to 250c for supplying gas are provided on the side surfaces of the nozzles 249a to 249c, respectively.
- the gas supply holes 250 a to 250 c are each opened so as to face the center of the reaction tube 203, and can supply gas toward the wafer 200.
- a plurality of gas supply holes 250 a to 250 c are provided from the lower part to the upper part of the reaction tube 203.
- a raw material for example, a halosilane raw material gas containing silicon (Si) as a predetermined element (main element) and a halogen element is passed through the MFC 241a, the valve 243a, and the nozzle 249a. Supplied into 201.
- the raw material gas is a gaseous raw material, for example, a gas obtained by vaporizing a raw material that is in a liquid state under normal temperature and normal pressure, or a raw material that is in a gaseous state under normal temperature and normal pressure.
- a halosilane is a silane having a halogen group such as a chloro group or a fluoro group.
- the halosilane source gas for example, a source gas containing Si, chlorine (Cl) and an alkylene group and having a Si—C bond, that is, an alkylene chlorosilane source gas which is an organic chlorosilane source gas can be used.
- the alkylene group includes a methylene group, an ethylene group, a propylene group, a butylene group and the like.
- the alkylene chlorosilane source gas acts as a Si source and a C source.
- the alkylene chlorosilane source gas for example, bis (trichlorosilyl) methane ((SiCl 3 ) 2 CH 2 , abbreviation: BTCSM) gas can be used.
- an oxygen (O) -containing gas as a reactant is supplied into the processing chamber 201 through the MFC 241b, the valve 243b, and the nozzle 249b.
- the O-containing gas for example, water vapor (H 2 O gas) can be used.
- the H 2 O gas is a gas containing O and hydrogen (H) and containing an O—H bond, that is, an OH group (hydroxy group).
- An amine-based gas containing carbon (C), nitrogen (N), and H is supplied from the gas supply pipe 232c as a catalyst gas for promoting a film forming process to be described later via the MFC 241c, the valve 243c, and the nozzle 249c. Supplied in.
- the amine-based gas may be partially decomposed in a film formation process described later, and may not be a “catalyst” in a strict sense.
- catalyst gas used in step 1 described later is also referred to as a first catalyst gas
- catalyst gas used in step 2 is also referred to as a second catalyst gas.
- the raw material gas, the reactant (oxidizing gas), and the catalyst gas are also referred to as film forming gas (processing gas).
- a gas containing H and fluorine (F) (fluorine-containing gas containing H) is supplied into the processing chamber 201 through the MFC 241a, the valve 243a, and the nozzle 249a as the cleaning gas.
- the gas containing H and F for example, hydrogen fluoride (HF) gas can be used.
- nitrogen (N 2 ) gas as an inert gas passes through the MFCs 241d to 241f, valves 243d to 243f, gas supply pipes 232a to 232c, and nozzles 249a to 249c, respectively. Supplied into 201.
- the raw material supply system is configured by the gas supply pipe 232a, the MFC 241a, and the valve 243a.
- a reactant supply system is mainly configured by the gas supply pipe 232b, the MFC 241b, and the valve 243b.
- a catalyst supply system is mainly configured by the gas supply pipe 232c, the MFC 241c, and the valve 243c. These supply systems constitute a first supply system.
- a cleaning gas supply system as a second supply system is mainly configured by the gas supply pipe 232a, the MFC 241a, and the valve 243a.
- An inert gas supply system is mainly configured by the gas supply pipes 232d to 232f, the MFCs 241d to 241f, and the valves 243d to 243f.
- any or all of the various supply systems described above may be configured as an integrated supply system in which valves 243a to 243f, MFCs 241a to 241f, and the like are integrated.
- the integrated supply system is connected to each of the gas supply pipes 232a to 232f, and supplies various gases into the gas supply pipes 232a to 232f, that is, the opening / closing operation of the valves 243a to 243f and the flow rates of the MFCs 241a to 241f. Adjustment operations and the like are controlled by a controller 121 described later.
- the integrated supply system is configured as an integrated or split-type integrated unit, and can be attached to and detached from the gas supply pipes 232a to 232f in units of integrated units. Replacement, expansion, and the like can be performed in units of integrated units.
- An exhaust pipe 231 for exhausting the atmosphere in the processing chamber 201 is provided below the side wall of the reaction tube 203.
- the exhaust pipe 231 is connected to a pressure sensor 245 as a pressure detector (pressure detection unit) for detecting the pressure in the processing chamber 201 and an APC (Auto Pressure Controller) valve 244 as a pressure regulator (pressure adjustment unit).
- a vacuum pump 246 as a vacuum exhaust device is connected.
- the APC valve 244 can perform vacuum evacuation and vacuum evacuation stop in the processing chamber 201 by opening and closing the valve with the vacuum pump 246 activated, and further, with the vacuum pump 246 activated,
- the pressure in the processing chamber 201 can be adjusted by adjusting the valve opening based on the pressure information detected by the pressure sensor 245.
- An exhaust system is mainly configured by the exhaust pipe 231, the APC valve 244, and the pressure sensor 245.
- the vacuum pump 246 may be included in the exhaust system.
- a seal cap 219 is provided as a furnace opening lid capable of airtightly closing the lower end opening of the manifold 209.
- the seal cap 219 is made of a metal material such as SUS and is formed in a disk shape.
- an O-ring 220b is provided as a seal member that comes into contact with the lower end of the manifold 209.
- a rotation mechanism 267 for rotating a boat 217 described later is installed below the seal cap 219.
- a rotation shaft 255 of the rotation mechanism 267 passes through the seal cap 219 and is connected to the boat 217.
- the rotation mechanism 267 is configured to rotate the wafer 200 by rotating the boat 217.
- the seal cap 219 is configured to be raised and lowered in the vertical direction by a boat elevator 115 as an elevating mechanism installed outside the reaction tube 203.
- the boat elevator 115 is configured as a transfer device (transfer mechanism) that carries the wafer 200 in and out of the processing chamber 201 by moving the seal cap 219 up and down.
- a shutter 219s is provided below the manifold 209 as a furnace opening lid capable of airtightly closing the lower end opening of the manifold 209 with the seal cap 219 lowered and the boat 217 carried out of the processing chamber 201. Yes.
- the shutter 219s is made of a metal material such as SUS, and is formed in a disk shape.
- an O-ring 220c as a seal member that comes into contact with the lower end of the manifold 209 is provided.
- the opening / closing operation (elevating operation, rotating operation, etc.) of the shutter 219s is controlled by the shutter opening / closing mechanism 115s.
- the boat 217 as a substrate support is configured to support a plurality of, for example, 25 to 200, wafers 200 in a multi-stage manner by aligning them vertically in a horizontal posture and with their centers aligned. It is configured to arrange at intervals.
- the boat 217 is made of a heat-resistant material such as quartz or SiC. Under the boat 217, heat insulating plates 218 made of a heat resistant material such as quartz or SiC are supported in multiple stages.
- a temperature sensor 263 is installed as a temperature detector. By adjusting the power supply to the heater 207 based on the temperature information detected by the temperature sensor 263, the temperature in the processing chamber 201 becomes a desired temperature distribution.
- the temperature sensor 263 is provided along the inner wall of the reaction tube 203.
- the controller 121 which is a control unit (control means), is configured as a computer having a CPU (Central Processing Unit) 121a, a RAM (Random Access Memory) 121b, a storage device 121c, and an I / O port 121d.
- the RAM 121b, the storage device 121c, and the I / O port 121d are configured to exchange data with the CPU 121a via the internal bus 121e.
- an input / output device 122 configured as a touch panel or the like is connected to the controller 121.
- the storage device 121c includes a flash memory, a HDD (Hard Disk Drive), and the like.
- a control program for controlling the operation of the substrate processing apparatus, a process recipe in which a film forming process procedure and conditions described later are described, and a cleaning process procedure and conditions described later are described.
- a cleaning recipe or the like is stored so as to be readable.
- the process recipe is a combination of functions so that a predetermined result can be obtained by causing the controller 121 to execute each procedure in a film forming process to be described later, and functions as a program.
- the cleaning recipe is a combination of procedures that allow the controller 121 to execute each procedure in the cleaning process described later and obtain a predetermined result, and functions as a program.
- process recipes, cleaning recipes, control programs, and the like are collectively referred to simply as programs. Also, process recipes and cleaning recipes are collectively referred to simply as recipes.
- program When the term “program” is used in this specification, it may include only a recipe, only a control program, or both.
- the RAM 121b is configured as a memory area (work area) in which programs, data, and the like read by the CPU 121a are temporarily stored.
- the I / O port 121d includes the above-described MFCs 241a to 241f, valves 243a to 243f, pressure sensor 245, APC valve 244, vacuum pump 246, temperature sensor 263, heater 207, rotation mechanism 267, boat elevator 115, shutter opening / closing mechanism 115s, etc. It is connected to the.
- the CPU 121a is configured to read out and execute a control program from the storage device 121c and to read a recipe from the storage device 121c in response to an operation command input from the input / output device 122 or the like.
- the CPU 121a adjusts the flow rate of various gases by the MFCs 241a to 241f, the opening / closing operation of the valves 243a to 243f, the opening / closing operation of the APC valve 244, and the pressure adjustment by the APC valve 244 based on the pressure sensor 245 so as to follow the contents of the read recipe.
- the controller 121 installs the above-mentioned program stored in an external storage device (for example, a magnetic disk such as an HDD, an optical disk such as a CD, a magneto-optical disk such as an MO, or a semiconductor memory such as a USB memory) 123 in a computer.
- an external storage device for example, a magnetic disk such as an HDD, an optical disk such as a CD, a magneto-optical disk such as an MO, or a semiconductor memory such as a USB memory
- the storage device 121c and the external storage device 123 are configured as computer-readable recording media. Hereinafter, these are collectively referred to simply as a recording medium.
- recording medium When the term “recording medium” is used in this specification, it may include only the storage device 121c alone, may include only the external storage device 123 alone, or may include both of them.
- the program may be provided to the computer using a communication means such as the Internet or a dedicated line without using the external storage device 123.
- the film forming sequence shown in FIG. 4 may be shown as follows for convenience. The same notation is used in the description of other embodiments below.
- wafer When the term “wafer” is used in this specification, it may mean the wafer itself or a laminate of the wafer and a predetermined layer or film formed on the surface thereof.
- wafer surface When the term “wafer surface” is used in this specification, it may mean the surface of the wafer itself, or may mean the surface of a predetermined layer or the like formed on the wafer.
- the phrase “form a predetermined layer on the wafer” means that the predetermined layer is directly formed on the surface of the wafer itself, a layer formed on the wafer, etc. It may mean that a predetermined layer is formed on the substrate.
- substrate is also synonymous with the term “wafer”.
- the inside of the processing chamber 201 is evacuated (reduced pressure) by the vacuum pump 246 so that the space in which the wafer 200 exists is at a desired pressure (degree of vacuum).
- the pressure in the processing chamber 201 is measured by the pressure sensor 245, and the APC valve 244 is feedback-controlled based on the measured pressure information.
- the wafer 200 in the processing chamber 201 is heated by the heater 207 so as to have a desired film formation temperature.
- the power supply to the heater 207 is feedback-controlled based on the temperature information detected by the temperature sensor 263 so that the inside of the processing chamber 201 has a desired temperature distribution.
- the rotation of the wafer 200 by the rotation mechanism 267 is started.
- the operation of the vacuum pump 246 and the heating and rotation of the wafer 200 are all continuously performed at least until the processing on the wafer 200 is completed.
- Step 1 BTCSM gas and pyridine gas are supplied to the wafer 200 in the processing container. Specifically, the valves 243a and 243c are opened, and BTCSM gas is allowed to flow into the gas supply pipe 232a and pyridine gas is allowed to flow into the gas supply pipe 232c.
- the flow rates of the BTCSM gas and the pyridine gas are adjusted by the MFCs 241a and 241c, supplied into the processing chamber 201 through the nozzles 249a and 249c, mixed into the processing chamber 201, and exhausted from the exhaust pipe 231.
- the valves 243d to 243f may be opened at the same time so that N 2 gas flows into the gas supply pipes 232d to 232f.
- the flow rate of the N 2 gas is adjusted by the MFCs 241d to 241f, supplied into the processing chamber 201 through the nozzles 249a to 249c, and exhausted from the exhaust pipe 231.
- BTCSM gas supply flow rate 1 to 2000 sccm, preferably 10 to 1000 sccm
- Supply flow rate of pyridine gas 1 to 2000 sccm, preferably 10 to 1000 sccm
- N 2 gas supply flow rate per gas supply pipe
- Each gas supply time 1 to 100 seconds, preferably 5 to 60 seconds
- Film formation temperature temperature in the processing chamber 201): 10 to 90 ° C., preferably room temperature (25 ° C.) to 70 ° C., more preferably 50 to 70 °C
- Deposition pressure pressure in the processing chamber 201): 1 to 3000 Pa, preferably 133 to 2666 Pa Is exemplified.
- the film forming pressure is set to a pressure within the above-mentioned range (for example, 1333 Pa or less)
- a pressure within the above-mentioned range for example, 1333 Pa or less
- etching resistance also referred to as HF resistance or acid resistance
- the in-plane film thickness uniformity or in-plane film quality uniformity of the SiOC film decreases.
- These can be solved by setting the film formation temperature to 10 ° C. or higher.
- the film forming temperature By setting the film forming temperature to room temperature or higher, aggregation of the gas supplied into the processing chamber 201 can be easily suppressed. As a result, the etching resistance of the SiOC film formed on the wafer 200 can be increased, and the in-plane film thickness uniformity and in-plane film quality uniformity of the SiOC film can be improved.
- the film forming temperature By setting the film forming temperature to 50 ° C. or higher, aggregation of the gas supplied into the processing chamber 201 can be surely avoided, and the etching resistance of the SiOC film formed on the wafer 200 is further increased, The in-plane film thickness uniformity and the in-plane film quality uniformity of the SiOC film can be further improved.
- the film forming pressure is set to a pressure within the above-mentioned range (for example, 1333 Pa or less)
- a pressure within the above-mentioned range for example, 1333 Pa or less
- the film forming temperature exceeds 90 ° C.
- the film forming reaction on the wafer 200 is difficult to proceed, and it is formed per cycle.
- Layer thickness may be reduced (cycle rate may be reduced).
- the deposition rate of the SiOC film may decrease.
- This can be solved by setting the film forming temperature to 90 ° C. or lower.
- By setting the film forming temperature to 70 ° C. or lower it is possible to reliably ensure (maintain) a practical level cycle rate, that is, a practical level film forming rate.
- the first layer is formed on the outermost surface of the wafer 200 as, for example, less than one atomic layer (one molecular layer) to several atomic layers (several layers).
- a Si-containing layer containing C and Cl with a thickness of about (molecular layer) is formed.
- the Si-containing layer containing C and Cl becomes a layer containing a Si—C bond.
- the Si-containing layer containing C and Cl may be a Si layer containing C and Cl, an adsorption layer of BTCSM, or both of them. In this specification, the Si-containing layer containing C and Cl is also simply referred to as a Si-containing layer containing C for convenience.
- the Si layer containing C and Cl includes a continuous layer made of Si and containing C and Cl, a discontinuous layer, and a Si thin film containing C and Cl formed by overlapping these layers.
- Si constituting the Si layer containing C and Cl includes not only completely broken bonds with C and Cl but also completely broken bonds with C and Cl.
- the BTCSM adsorption layer includes a discontinuous adsorption layer in addition to a continuous adsorption layer composed of BTCSM molecules.
- the BTCSM molecules constituting the BTCSM adsorption layer include those in which the bond between Si and C is partially broken, and those in which the bond between Si and Cl is partially broken, that is, a part of which is decomposed. That is, the BTCSM adsorption layer may be a BTCSM physical adsorption layer, a BTCSM chemical adsorption layer, or both of them.
- the layer having a thickness less than one atomic layer means a discontinuously formed atomic layer (molecular layer), and a layer having a thickness of one atomic layer (molecular layer).
- the Si-containing layer containing C and Cl can include both an Si layer containing C and Cl and an adsorption layer of BTCSM. However, since both have the same structure in which C or Cl is bonded to the main element (Si), for convenience, the Si-containing layer containing C and Cl is “one atomic layer” or “several atomic layer”.
- the term “atomic layer” is used synonymously with “molecular layer”.
- the thickness of the first layer exceeds several atomic layers, the action of oxidation in step 2 described later does not reach the entire first layer.
- the minimum thickness of the first layer is less than one atomic layer. Therefore, it is preferable that the thickness of the first layer be less than one atomic layer to several atomic layers.
- the action of oxidation in Step 2 described later can be relatively increased, and the time required for the oxidation in Step 2 can be shortened.
- the time required for forming the first layer in step 1 can also be shortened.
- the processing time per cycle can be shortened, and the total processing time can be shortened. That is, the film forming rate can be increased.
- the controllability of the film thickness uniformity can be improved by setting the thickness of the first layer to 1 atomic layer or less.
- Si is deposited on the wafer 200 to form a Si layer containing C and Cl.
- the BTCSM adsorption layer is formed by adsorbing the BTCSM on the wafer 200.
- at least a part of the Si—C bond contained in the BTCSM gas is held (maintained) without being broken, and is taken into the first layer as it is.
- Forming a Si layer containing C and Cl is preferable to forming an adsorption layer of BTCSM because the film formation rate can be increased.
- the temperature of the wafer 200 is set to a low temperature of 90 ° C. or less, for example, the BTCSM adsorption layer is more easily formed on the wafer 200 instead of the Si layer containing C and Cl.
- Pyridine gas weakens the bonding force of O—H bonds existing on the surface of the wafer 200, promotes decomposition of BTCSM gas, and promotes formation of the first layer by chemical adsorption of BTCSM molecules (first catalyst gas). Acts as For example, the pyridine gas acts on OH bonds existing on the surface of the wafer 200 and acts to weaken the bonding force. The reaction between the weakened bonding force H and the BTCSM gas Cl produces a gaseous substance containing Cl and H, desorbs H from the surface of the wafer 200, and desorbs Cl from the BTCSM molecules. Release. The BTCSM molecules that have lost Cl are chemisorbed on the surface of the wafer 200 or the like. As a result, a BTCSM chemical adsorption layer, more precisely, a chemical adsorption layer of a substance obtained by decomposing a part of BTCSM is formed on the wafer 200 as the first layer.
- the reason why the bonding force of the O—H bond existing on the surface of the wafer 200 is weakened by the catalytic action of the pyridine gas is that N having a lone electron pair in the pyridine molecule acts to attract H.
- a compound having a large pKa has a stronger ability to attract H.
- the Cl extracted from the BTCSM molecules reacts with the first catalyst gas, thereby causing a salt (particle source such as ammonium chloride (NH 4 Cl)).
- a salt particle source such as ammonium chloride (NH 4 Cl)
- pyridine gas has a relatively large pKa of about 5.67 and is 7 or less, it can be suitably used as the first catalyst gas.
- the valves 243a and 243c are closed, and the supply of BTCSM gas and pyridine gas into the processing chamber 201 is stopped. Then, the inside of the processing chamber 201 is evacuated, and the gas remaining in the processing chamber 201 is removed from the processing chamber 201. At this time, the valves 243d to 243f are kept open, and the supply of N 2 gas into the processing chamber 201 is maintained.
- the N 2 gas acts as a purge gas, whereby the inside of the processing chamber 201 is purged.
- Step 2 After step 1 is completed, H 2 O gas and pyridine gas are supplied to the wafer 200 in the processing container.
- the opening / closing control of the valves 243b, 243c, 243d to 243f is performed in the same procedure as the opening / closing control of the valves 243a, 243c, 243d to 243f in Step 1.
- the flow rates of H 2 O gas and pyridine gas are adjusted by the MFCs 241b and 241c, respectively, are supplied into the processing chamber 201 through the nozzles 249b and 249c, are mixed into the processing chamber 201, and then mixed from the exhaust pipe 231. Exhausted.
- Supply flow rate of H 2 O gas 10 to 10,000 sccm, preferably 100 to 1000 sccm
- Supply flow rate of pyridine gas 1 to 2000 sccm, preferably 10 to 1000 sccm
- Each gas supply time is 1 to 100 seconds, preferably 5 to 60 seconds.
- the other processing conditions are, for example, the same processing conditions as in Step 1.
- the amount of pyridine gas supplied in step 2 and the amount of pyridine gas supplied in step 1 may be the same or different.
- a part of the first layer formed on the wafer 200 in Step 1 is oxidized (modified).
- a second layer containing Si, O, and C that is, a silicon oxycarburized layer (SiOC layer) is formed.
- SiOC layer silicon oxycarburized layer
- impurities such as Cl contained in the first layer constitute a gaseous substance containing at least Cl in the process of the reforming reaction with the H 2 O gas, and from the inside of the processing chamber 201. Discharged. That is, impurities such as Cl in the first layer are separated from the first layer by being extracted from or desorbed from the first layer. As a result, the second layer is a layer having less impurities such as Cl than the first layer.
- Pyridine gas weakens the bonding force of O-H bond the H 2 O gas has, promote decomposition of the H 2 O gas, the catalyst for promoting the formation of the second layer by reaction with the H 2 O gas and the first layer Acts as a gas (second catalyst gas).
- pyridine gas acts on the O—H bond of H 2 O gas and acts to weaken the bonding force.
- a reaction between H having a weak bonding force and Cl in the first layer formed on the wafer 200 generates a gaseous substance containing Cl and H, and H is desorbed from H 2 O molecules. At the same time, Cl is desorbed from the first layer.
- the bond strength of the O—H bond of the H 2 O gas is weakened by the catalytic action of the pyridine gas because, as in Step 1, N having a lone electron pair in the pyridine molecule acts to attract H. It is.
- the bonding force of the O—H bond of the H 2 O gas can be appropriately weakened, and the above-described oxidation reaction can be promoted.
- the second catalyst gas it is preferable to use a compound having a pKa of, for example, 11 or less, preferably 7 or less.
- pyridine gas can be suitably used as in Step 1.
- valves 243b and 243c are closed, and the supply of H 2 O gas and pyridine gas into the processing chamber 201 is stopped. Then, the gas remaining in the processing chamber 201 is removed from the processing chamber 201 by the same processing procedure as in Step 1.
- a predetermined composition and a predetermined film thickness are formed on the wafer 200 by performing a predetermined number of cycles (n times (n is an integer of 1 or more)) in which steps 1 and 2 described above are performed non-simultaneously, that is, alternately without being synchronized.
- the SiOC film can be formed.
- the above cycle is preferably repeated multiple times. That is, the thickness of the second layer (SiOC layer) formed per cycle is made smaller than the desired film thickness, and the thickness of the SiOC film formed by laminating the second layer becomes the desired film thickness. It is preferable to repeat the above-described cycle a plurality of times until it becomes.
- an alkylenechlorosilane raw material gas such as 1,2-bis (trichlorosilyl) ethane ((SiCl 3 ) 2 C 2 H 4 , abbreviation: BTCSE) gas can be used in addition to the BTCSM gas.
- BTCSE 1,2-bis (trichlorosilyl) ethane
- Examples of the raw material include 1,1,2,2-tetrachloro-1,2-dimethyldisilane ((CH 3 ) 2 Si 2 Cl 4 , abbreviation: TCMDDS) gas, 1,2-dichloro-1, 1,2,2-tetramethyldisilane ((CH 3 ) 4 Si 2 Cl 2 , abbreviation: DCTMDS) gas, 1-monochloro-1,1,2,2,2-pentamethyldisilane ((CH 3 ) 5 Si 2 Cl, abbreviated: MCPMDS) and alkyl chlorosilane feed gas such as a gas, hexachlorodisilane (Si 2 Cl 6, abbreviation: HCDS), gas, octa chlorotrifluoroethylene silane (Si 3 Cl 8, abbreviation: OCTS) inorganic such as a gas
- the chlorosilane source gas may be used.
- an O-containing gas containing an O—H bond such as hydrogen peroxide (H 2 O 2 ) gas
- an O-containing gas not containing an O—H bond for example, oxygen (O 2 ) gas, ozone (O 3 ) gas, hydrogen (H 2 ) gas + O 2 gas, H 2 gas + O 3 gas, is used. Etc. can also be used.
- N 2 gas as a purge gas is supplied from each of the nozzles 249 a to 249 c into the processing chamber 201 and exhausted from the exhaust pipe 231.
- the inside of the processing chamber 201 is purged, and the gas and reaction byproducts remaining in the processing chamber 201 are removed from the processing chamber 201 (after purge).
- the atmosphere in the processing chamber 201 is replaced with an inert gas (inert gas replacement), and the pressure in the processing chamber 201 is returned to normal pressure (return to atmospheric pressure).
- the seal cap 219 is lowered by the boat elevator 115, the lower end of the manifold 209 is opened, and the processed wafer 200 is carried out from the lower end of the manifold 209 to the outside of the reaction tube 203 while being supported by the boat 217 (boat Unloaded).
- the shutter 219s is moved, and the lower end opening of the manifold 209 is sealed by the shutter 219s via the O-ring 220c (shutter close).
- the processed wafer 200 is taken out of the reaction tube 203 and then taken out from the boat 217 (wafer discharge).
- the surface of a member in the processing chamber 201 for example, the inner wall of the reaction tube 203, the inner walls and surfaces of the nozzles 249a to 249c, the surface of the boat 217, the inner wall of the manifold 209, etc.
- deposits including thin films such as SiOC films and reaction byproducts accumulate. That is, an oxide deposit containing C (a deposit containing SiOC as a main component, hereinafter also simply referred to as a deposit) adheres to the surface of a member in the processing chamber 201 and accumulates. Therefore, the cleaning process is performed when the amount of the deposit, that is, the accumulated film thickness reaches a predetermined amount (thickness) before the deposit is peeled off or dropped.
- the shutter 219s is moved by the shutter opening / closing mechanism 115s, and the lower end opening of the manifold 209 is opened (shutter open). Thereafter, an empty boat 217 not loaded with the wafers 200 is lifted by the boat elevator 115 and carried into the processing chamber 201. In this state, the seal cap 219 seals the lower end of the manifold 209 via the O-ring 220b.
- the processing chamber 201 is evacuated by a vacuum pump 246 so that a desired pressure is obtained. Further, the processing chamber 201 is heated by the heater 207 so that the inside of the processing chamber 201 has a desired temperature. Further, the rotation of the boat 217 by the rotation mechanism 267 is started. The operation of the vacuum pump 246, the heating in the processing chamber 201, and the rotation of the boat 217 are continuously performed at least until a cleaning step described later is completed. However, the boat 217 may not be rotated.
- HF gas is supplied into the processing chamber after the above-described film forming process is performed, that is, into the processing chamber 201 to which deposits containing C adhere.
- the valves 243b and 243c closed, the valves 243a and 243d to 243f are opened and closed in the same procedure as the valves 243a and 243d to 243f in the film forming process.
- the flow rate of the HF gas is adjusted by the MFC 241a, and the HF gas is supplied into the processing chamber 201 through the gas supply pipe 232a and the nozzle 249a.
- the surface of a member in the processing chamber 201 for example, the inner wall of the reaction tube 203, nozzles 249 a to 249 a. It contacts the surface of 249c, the surface of the boat 217, the inner wall of the manifold 209, the upper surface of the seal cap 219, and the like.
- a thermochemical reaction etching reaction
- Supply flow rate of HF gas 1000 to 8000 sccm, preferably 2000 to 8000 sccm N 2 gas supply flow rate (per gas supply pipe): 0 to 10000 sccm
- Each gas supply time 60 to 1800 seconds, preferably 120 to 1200 seconds
- Cleaning temperature temperature in the processing chamber 201: temperature higher than the film formation temperature, for example, 100 to 400 ° C., preferably 200 to 300 ° C.
- Cleaning pressure pressure in the processing chamber 201): 1333 to 26660 Pa (10 to 200 Torr), preferably 1333 to 13330 Pa (10 to 100 Torr) Is exemplified.
- the etching rate of SiO (oxide containing neither C nor N) may be higher than the etching rate of SiOC (oxide containing C).
- SiOC oxide containing C
- the inventors have shown that the etching of quartz members in the processing chamber 201 with HF gas, that is, the members such as the boat 217, the nozzles 249a to 249c, and the reaction tube 203, has the same tendency as the etching of SiO with HF gas. I have confirmed that. That is, under the above-described conditions, the etching of the quartz member in the processing chamber 201 may proceed at a relatively high speed. As a result, it is difficult to remove deposits from the inside of the processing chamber 201, and the quartz member in the processing chamber 201 may be greatly damaged by etching.
- the cleaning pressure is less than 10 Torr, not only the etching of SiO hardly proceeds, but also the etching rate of SiOC becomes small, and the deposit removal efficiency may decrease. As described above, if it is attempted to remove the deposit under the condition where the etching selectivity is poor, the time required for the cleaning process and the gas cost may be increased.
- the SiOC etching rate it is possible to make the SiOC etching rate larger than the SiO etching rate by setting the cleaning temperature to 100 ° C. or higher or the cleaning pressure to 10 Torr or higher. Specifically, it is possible to allow the SiOC etching to proceed at a practical rate while making the SiO etching hardly proceed. That is, it is possible to efficiently remove deposits attached to the processing chamber 201 while avoiding etching damage to the quartz member in the processing chamber 201. By setting the cleaning temperature to 200 ° C. or higher, the above-described effects can be obtained more reliably.
- the cleaning temperature exceeds 400 ° C., not only the etching of SiO hardly progresses, but also the etching rate of SiOC becomes small, and the deposit removal efficiency may decrease. As described above, if it is attempted to remove the deposit under the condition where the etching selectivity is poor, the time required for the cleaning process and the gas cost may be increased.
- the cleaning temperature By setting the cleaning temperature to 400 ° C. or lower or the cleaning pressure to 200 Torr or lower, it is possible to selectively increase the SiOC etching rate while suppressing an increase in the SiO etching rate. That is, it is possible to efficiently remove deposits from the processing chamber 201 while suppressing etching damage to the quartz member in the processing chamber 201.
- the cleaning temperature By setting the cleaning temperature to 300 ° C. or lower or the cleaning pressure to 100 Torr or lower, the above-described effects can be obtained more reliably.
- the above-described cleaning temperature and cleaning pressure conditions can be said to be conditions that allow the SiOC etching rate to be greater than the SiO etching rate, that is, conditions that provide desired etching selectivity. Furthermore, it can be said that these conditions are conditions that can suppress the etching damage of the quartz member while removing the deposit, that is, conditions that can provide etching selectivity between the deposit and the quartz member.
- the entire region in the processing chamber 201 is set to such processing conditions, so that it is possible to efficiently remove deposits while avoiding etching damage to the quartz member in each corner of the processing chamber 201. It is possible to proceed to. For example, by heating the vicinity of the furnace mouth (low temperature region, heat insulation region) of the processing vessel that is difficult to be heated to a temperature of 100 ° C. or higher, relatively brittle deposits (powder deposits) adhering to this region are removed. It becomes possible. In this case, the substrate accommodation region that is easily heated by the heater 207 is naturally heated to a temperature of 100 ° C. or higher, and relatively dense deposits attached to this region can be removed together.
- the valve 243a is closed and the supply of HF gas into the processing chamber 201 is stopped. Then, the inside of the processing chamber 201 is purged by the same processing procedure as the after-purging of the film forming process (after-purging). At this time, the processing chamber 201 may be purged intermittently (cycle purge) by repeatedly opening and closing the valves 243d to 243f. Thereafter, the atmosphere in the processing chamber 201 is replaced with N 2 gas (inert gas replacement), and the pressure in the processing chamber 201 is returned to normal pressure (return to atmospheric pressure).
- the cleaning temperature when HF gas is used as the cleaning gas, if the cleaning temperature is set to, for example, 30 ° C. or higher and lower than 100 ° C., the etching rate of the quartz member becomes larger than the etching rate of SiOC. . This not only makes it difficult to remove the deposit containing C from the inside of the processing chamber 201, but also makes the quartz member in the processing chamber 201 susceptible to etching damage.
- fluorine (F 2 ) gas when fluorine (F 2 ) gas is used as the cleaning gas, the cleaning temperature needs to be set at, for example, 300 ° C. or more and 400 ° C. or less.
- the entire region in the processing chamber 201 is set to the above-described processing conditions, so that the deposit containing C is avoided in the corners of the processing chamber 201 while avoiding etching damage to the quartz member. Can be removed.
- the downtime of the substrate processing apparatus can be shortened and the maintenance cost can be reduced.
- the above-described effect is achieved by, for example, the inside of a processing container after performing a process of forming a silicon oxycarbonitride film (SiOCN film) or a silicon oxynitride film (SiON film) on the wafer 200 by the following film forming sequence. In the case of cleaning, the same can be obtained.
- SiOCN film silicon oxycarbonitride film
- SiON film silicon oxynitride film
- a salt such as NH 4 Cl is more likely to be generated in the course of the film forming process than in the film forming sequence shown in FIG. (A deposit containing at least one of them) may adhere to the surface of a member in the processing chamber 201 in a large amount.
- a large amount of oxide deposits containing C and N may adhere to the surface of the member in the processing chamber 201, and the SiON film is formed.
- a large amount of oxide deposits containing N may adhere to the surfaces of the members in the processing chamber 201.
- Such a deposit containing salt or the like is subjected to a cleaning method different from the present embodiment, for example, using a conventional cleaning process in which HF gas is used as a cleaning gas and the cleaning temperature is set to, for example, 30 ° C. or more and less than 100 ° C.
- the cleaning temperature is set to, for example, 30 ° C. or more and less than 100 ° C.
- F 2 gas is used as the cleaning gas
- the cleaning temperature is, for example, 300 ° C. or more and 400 ° C. or less
- the removal tends to be difficult.
- even a deposit containing such a salt is efficiently removed while avoiding etching damage to the quartz member in the processing chamber 201. Is possible.
- HF gas may be supplied into the processing chamber 201 via the nozzle 249b or the nozzle 249c. Further, the HF gas may be supplied into the processing chamber 201 by using a plurality of nozzles simultaneously or alternately.
- the present invention includes a process of forming a film containing, on a substrate, a semi-metal element such as germanium (Ge) or boron (B) as a main element and further containing at least one of C and N in addition to Si.
- a semi-metal element such as germanium (Ge) or boron (B) as a main element and further containing at least one of C and N in addition to Si.
- the present invention can also be suitably applied to the case where the inside of the processing container after cleaning is cleaned.
- the present invention also provides titanium (Ti), zirconium (Zr), hafnium (Hf), niobium (Nb), tantalum (Ta), molybdenum (Mo), tungsten (W), yttrium (Y), and lanthanum (La). , Cleaning the inside of the processing container after performing a process of forming a film containing a metal element such as strontium (Sr) or aluminum (Al) as a main element and further including at least one of C and N on the substrate Even in the case, it can be suitably applied.
- a metal element such as strontium (Sr) or aluminum (Al)
- the processing procedure and processing conditions of the cleaning process can be the same processing procedure and processing conditions as in the above-described embodiment. In these cases, the same effects as those of the above-described embodiment can be obtained.
- recipes used for substrate processing and cleaning processing are individually prepared according to processing contents and stored in the storage device 121c via the telecommunication line or the external storage device 123.
- the CPU 121a appropriately select an appropriate recipe from a plurality of recipes stored in the storage device 121c according to the processing content. . Accordingly, it is possible to form films having various film types, composition ratios, film qualities, and film thicknesses with a single substrate processing apparatus with good reproducibility. In addition, the burden on the operator can be reduced, and the substrate processing can be started quickly while avoiding an operation error.
- the above-described recipe is not limited to a case of newly creating, but may be prepared by changing an existing recipe that has already been installed in the substrate processing apparatus, for example.
- the changed recipe may be installed in the substrate processing apparatus via an electric communication line or a recording medium on which the recipe is recorded.
- an existing recipe that has already been installed in the substrate processing apparatus may be directly changed by operating the input / output device 122 provided in the existing substrate processing apparatus.
- a film is formed using a batch-type substrate processing apparatus that processes a plurality of substrates at one time.
- the present invention is not limited to the above-described embodiment, and can be suitably applied to a case where a film is formed using, for example, a single-wafer type substrate processing apparatus that processes one or several substrates at a time.
- a film is formed using a substrate processing apparatus having a hot wall type processing furnace.
- the present invention is not limited to the above-described embodiment, and can be suitably applied to a case where a film is formed using a substrate processing apparatus having a cold wall type processing furnace.
- the film forming process can be performed in the same sequence and processing conditions as in the above-described embodiment, and the same effects as these can be obtained.
- processing procedure and processing conditions at this time can be the same as the processing procedure and processing conditions of the above-described embodiment, for example.
- Sample 1 a processing container after processing for forming a SiOC film on a wafer was prepared. Further, as Sample 2, a processing container after processing for forming a SiO film on a wafer was prepared. Then, the cleaning process shown in FIG. 5 was performed on the processing containers of Samples 1 and 2 a plurality of times while varying the temperature condition and the pressure condition, and the etching selectivity of the deposit was evaluated.
- the film forming process of Sample 1 was performed according to the same processing procedure and processing conditions as the film forming process shown in FIG.
- the film forming process of Sample 2 was performed by alternately repeating the step of supplying HCDS gas and pyridine gas into the processing container and the step of supplying H 2 O gas and pyridine gas into the processing container. .
- FIG. 6 shows the evaluation results of this evaluation. 6, the horizontal axis represents the temperature (° C.) in the processing container in the cleaning process, and the vertical axis represents the etching rate (au) of the deposit.
- the solid line in FIG. 6 indicates the etching rate of the deposit (SiOC) adhering in the processing container of Sample 1, and the broken line indicates the etching rate of the deposit (SiO) adhering in the processing container of Sample 2.
- FIG. 6 shows that when the temperature in the processing container is lower than 100 ° C., the SiO etching rate is higher than the SiOC etching rate. Further, since the etching rate of the quartz member shows the same tendency as the etching rate of SiO, it can be understood that the etching rate of the quartz member is higher than the etching rate of SiOC. It can also be seen that the lower the temperature in the processing vessel, the higher the SiO etching rate. That is, it can be seen that the etching rate of the quartz member increases as the temperature in the processing container decreases. FIG. 6 also shows that the SiOC etching rate is higher than the SiO etching rate when the temperature in the processing container is 100 ° C. or higher.
- the etching rate of SiOC is larger than the etching rate of the quartz member. It can also be seen that when the temperature in the processing container is 100 ° C. or higher, the SiO etching rate becomes very small, that is, the SiO etching reaction hardly proceeds. That is, it turns out that the etching rate of a quartz member becomes very small. It can also be seen that at a temperature of 200 ° C. or lower, the higher the temperature in the processing vessel, the higher the SiOC etching rate. Therefore, by setting the temperature in the processing container in the cleaning process to a temperature of 100 ° C.
- the deposit containing C adhering to the processing container is suppressed while suppressing the etching damage of the quartz member in the processing container. It can be seen that it can be removed efficiently.
- the inventors have confirmed that the etching selectivity described above can be obtained by setting the temperature in the processing container to a temperature of 100 ° C. or higher and 400 ° C. or lower.
- extremely high etching selectivity can be obtained by setting the temperature in the processing container to a temperature in the range of 200 ° C. or more and 300 ° C. or less.
- the temperature and pressure conditions shown here not only deposits containing C but also deposits containing N, and deposits containing C and N, the same etching selectivity can be obtained. It is also confirmed that.
- FIG. 7 shows the evaluation results of this evaluation.
- the horizontal axis in FIG. 7 indicates the pressure (Torr) in the processing container in the cleaning process.
- the vertical axis, solid line, and broken line in FIG. 7 have the same meanings as those in FIG.
- FIG. 7 shows that when the temperature in the processing container is 30 ° C., the SiO etching rate is higher than the SiOC etching rate under any pressure condition of 10 to 150 Torr. That is, when the cleaning temperature is set to 30 ° C., it can be seen that it is difficult to remove deposits containing C adhering to the processing container while suppressing etching damage to the quartz member in the processing container.
- FIG. 8 shows the evaluation results of this evaluation.
- the horizontal axis, vertical axis, solid line, and broken line in FIG. 8 have the same meanings as those in FIG.
- the SiOC etching rate is larger than the SiO etching rate under any pressure condition of 10 to 150 Torr. That is, it can be seen that the etching rate of SiOC is larger than the etching rate of the quartz member. That is, when the cleaning temperature is set to 200 ° C., it can be understood that deposits containing C adhering to the processing container can be removed while suppressing etching damage to the quartz member in the processing container. It can also be seen that the etching selectivity can be increased as the pressure in the processing vessel is increased within a range of at least 10 to 150 Torr.
- the inventors have confirmed that the above-described etching selectivity can be obtained by setting the pressure in the processing container to a pressure of 10 Torr or more and 200 Torr or less. It has also been confirmed that extremely high etching selectivity can be obtained by setting the pressure within the range of 10 Torr to 200 Torr in the processing vessel.
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Abstract
Description
(a)基板上に炭素または窒素のうち少なくともいずれかを含む酸化膜を形成する処理を行った後の処理容器を準備する工程と、
(b)前記処理容器内へフッ化水素ガスを供給して前記処理容器内に付着した炭素または窒素のうち少なくともいずれかを含む堆積物を除去する工程と、を有し、
前記(b)を、前記処理容器内に付着した前記堆積物のエッチングレートの方が、前記処理容器内に存在する石英部材のエッチングレートよりも大きくなるような条件下で行う技術が提供される。
以下、本発明の一実施形態について、図1~図5を用いて説明する。
図1に示すように、処理炉202は加熱機構(温度調整部)としてのヒータ207を有する。ヒータ207は円筒形状であり、保持板に支持されることにより垂直に据え付けられている。ヒータ207は、ガスを熱で活性化(励起)させる活性化機構(励起部)としても機能する。
上述の基板処理装置を用い、半導体装置の製造工程の一工程として、基板としてのウエハ200上に膜を形成するシーケンス例について、図4を用いて説明する。以下の説明において、基板処理装置を構成する各部の動作はコントローラ121により制御される。
処理容器内のウエハ200に対してBTCSMガスおよびピリジンガスを供給するステップ1と、
処理容器内のウエハ200に対してH2Oガスおよびピリジンガスを供給するステップ2と、
を非同時に行うサイクルを所定回数行うことで、ウエハ200上に、Si、OおよびCを含む膜として、シリコン酸炭化膜(SiOC膜)を形成する。
複数枚のウエハ200がボート217に装填(ウエハチャージ)されると、シャッタ開閉機構115sによりシャッタ219sが移動させられて、マニホールド209の下端開口が開放される(シャッタオープン)。その後、図1に示すように、複数枚のウエハ200を支持したボート217は、ボートエレベータ115によって持ち上げられて処理室201内へ搬入(ボートロード)される。この状態で、シールキャップ219は、Oリング220bを介してマニホールド209の下端をシールした状態となる。
処理室201内、すなわち、ウエハ200が存在する空間が所望の圧力(真空度)となるように、真空ポンプ246によって処理室201内が真空排気(減圧排気)される。この際、処理室201内の圧力は圧力センサ245で測定され、この測定された圧力情報に基づきAPCバルブ244がフィードバック制御される。また、処理室201内のウエハ200が所望の成膜温度となるように、ヒータ207によって加熱される。この際、処理室201内が所望の温度分布となるように、温度センサ263が検出した温度情報に基づきヒータ207への通電具合がフィードバック制御される。また、回転機構267によるウエハ200の回転を開始する。真空ポンプ246の稼働、ウエハ200の加熱および回転は、いずれも、少なくともウエハ200に対する処理が終了するまでの間は継続して行われる。
その後、後述する2つのステップ、すなわち、ステップ1,2を順次実行する。
このステップでは、処理容器内のウエハ200に対してBTCSMガスおよびピリジンガスを供給する。具体的には、バルブ243a,243cを開き、ガス供給管232a内へBTCSMガスを、ガス供給管232c内へピリジンガスをそれぞれ流す。BTCSMガス、ピリジンガスは、それぞれ、MFC241a,241cにより流量調整され、ノズル249a,249cを介して処理室201内へ供給され、処理室201内に供給された後に混合し、排気管231から排気される。このとき同時にバルブ243d~243fを開き、ガス供給管232d~232f内へN2ガスを流すようにしてもよい。N2ガスは、MFC241d~241fにより流量調整され、ノズル249a~249cを介して処理室201内へ供給され、排気管231から排気される。
BTCSMガスの供給流量:1~2000sccm、好ましくは10~1000sccm
ピリジンガスの供給流量:1~2000sccm、好ましくは10~1000sccm
N2ガスの供給流量(ガス供給管毎):100~10000sccm
各ガス供給時間:1~100秒、好ましくは5~60秒
成膜温度(処理室201内の温度):10~90℃、好ましくは室温(25℃)~70℃、より好ましくは50~70℃
成膜圧力(処理室201内の圧力):1~3000Pa、好ましくは133~2666Pa
が例示される。
ステップ1が終了した後、処理容器内のウエハ200に対してH2Oガスおよびピリジンガスを供給する。このステップでは、バルブ243b,243c,243d~243fの開閉制御を、ステップ1におけるバルブ243a,243c,243d~243fの開閉制御と同様の手順で行う。H2Oガス、ピリジンガスは、それぞれ、MFC241b,241cにより流量調整され、ノズル249b,249cを介して処理室201内に供給され、処理室201内に供給された後に混合し、排気管231から排気される。
H2Oガスの供給流量:10~10000sccm、好ましくは100~1000sccm
ピリジンガスの供給流量:1~2000sccm、好ましくは10~1000sccm
各ガス供給時間:1~100秒、好ましくは5~60秒
が例示される。他の処理条件は、例えば、ステップ1と同様な処理条件とする。なお、ステップ2で供給するピリジンガスの量と、ステップ1で供給するピリジンガスの量とは、同一としてもよく、異ならせてもよい。
上述したステップ1,2を非同時に、すなわち、同期させることなく交互に行うサイクルを所定回数(n回(nは1以上の整数))行うことにより、ウエハ200上に、所定組成および所定膜厚のSiOC膜を形成することができる。上述のサイクルは複数回繰り返すのが好ましい。すなわち、1サイクルあたりに形成する第2層(SiOC層)の厚さを所望の膜厚よりも小さくし、第2層を積層することで形成されるSiOC膜の膜厚が所望の膜厚になるまで、上述のサイクルを複数回繰り返すのが好ましい。
SiOC膜の形成が完了した後、ノズル249a~249cのそれぞれからパージガスとしてのN2ガスを処理室201内へ供給し、排気管231から排気する。これにより、処理室201内がパージされ、処理室201内に残留するガスや反応副生成物が処理室201内から除去される(アフターパージ)。その後、処理室201内の雰囲気が不活性ガスに置換され(不活性ガス置換)、処理室201内の圧力が常圧に復帰される(大気圧復帰)。
ボートエレベータ115によりシールキャップ219が下降され、マニホールド209の下端が開口されるとともに、処理済のウエハ200が、ボート217に支持された状態でマニホールド209の下端から反応管203の外部に搬出(ボートアンロード)される。ボートアンロードの後は、シャッタ219sが移動させられ、マニホールド209の下端開口がOリング220cを介してシャッタ219sによりシールされる(シャッタクローズ)。処理済のウエハ200は、反応管203の外部に搬出された後、ボート217より取出される(ウエハディスチャージ)。
上述の成膜処理を行うと、処理室201内の部材の表面、例えば、反応管203の内壁、ノズル249a~249cの内壁および表面、ボート217の表面、マニホールド209の内壁等に、SiOC膜等の薄膜や反応副生成物を含む堆積物が累積する。すなわち、Cを含む酸化堆積物(SiOCを主成分とする堆積物、以下、単に堆積物とも称する。)が、処理室201内の部材の表面に付着して累積する。そこで、この堆積物の量、すなわち、累積膜厚が、堆積物に剥離や落下が生じる前の所定の量(厚さ)に達したところで、クリーニング処理が行われる。
シャッタ開閉機構115sによりシャッタ219sが移動させられて、マニホールド209の下端開口が開放される(シャッタオープン)。その後、ウエハ200を装填していない空のボート217が、ボートエレベータ115によって持ち上げられて処理室201内に搬入される。この状態で、シールキャップ219は、Oリング220bを介してマニホールド209の下端をシールした状態となる。
処理室201内が所望の圧力となるように、真空ポンプ246によって真空排気される。また、処理室201内が所望の温度となるように、ヒータ207によって加熱される。また、回転機構267によるボート217の回転を開始する。真空ポンプ246の稼働、処理室201内の加熱、ボート217の回転は、少なくとも後述するクリーニングステップが完了するまでの間は、継続して行われる。但し、ボート217は回転させなくてもよい。
続いて、上述の成膜処理を行った後の処理容器内、すなわち、Cを含む堆積物が付着した処理室201内へHFガスを供給する。このステップでは、バルブ243b,243cを閉じた状態で、バルブ243a,243d~243fの開閉制御を、成膜処理のステップ1におけるバルブ243a,243d~243fの開閉制御と同様の手順で行う。HFガスは、MFC241aにより流量調整され、ガス供給管232a、ノズル249aを介して処理室201内へ供給される。
HFガスの供給流量:1000~8000sccm、好ましくは2000~8000sccm
N2ガスの供給流量(ガス供給管毎):0~10000sccm
各ガス供給時間:60~1800秒、好ましくは120~1200秒
クリーニング温度(処理室201内の温度):成膜温度よりも高い温度、例えば100~400℃、好ましくは200~300℃
クリーニング圧力(処理室201内の圧力):1333~26660Pa(10~200Torr)、好ましくは1333~13330Pa(10~100Torr)
が例示される。
クリーニングステップが終了したら、バルブ243aを閉じ、処理室201内へのHFガスの供給を停止する。そして、成膜処理のアフターパージと同様の処理手順により、処理室201内をパージする(アフターパージ)。このとき、バルブ243d~243fの開閉動作を繰り返すことで、処理室201内のパージを間欠的に行うようにしてもよい(サイクルパージ)。その後、処理室201内の雰囲気がN2ガスに置換され(不活性ガス置換)、処理室201内の圧力が常圧に復帰される(大気圧復帰)。
ボートエレベータ115によりシールキャップ219が下降され、マニホールド209の下端が開口されるとともに、空のボート217が、マニホールド209の下端から反応管203の外部へ搬出(ボートアンロード)される。ボートアンロードの後は、シャッタ219sが移動させられ、マニホールド209の下端開口がOリング220cを介してシャッタ219sによりシールされる。これら一連の工程が終了すると、上述の成膜処理が再開される。
本実施形態によれば、以下に示す一つ又は複数の効果が得られる。
以上、本発明の実施形態を具体的に説明した。しかしながら、本発明は上述の実施形態に限定されるものではなく、その要旨を逸脱しない範囲で種々変更可能である。
本評価では、クリーニング処理を行う際、処理容器内の温度を30℃から300℃の範囲内で変化させた。他の処理条件は、上述の実施形態における処理条件範囲内の所定の条件とした。図6に本評価の評価結果を示す。図6の横軸はクリーニング処理における処理容器内の温度(℃)を、縦軸は堆積物のエッチングレート(a.u.)をそれぞれ示している。図6の実線はサンプル1の処理容器内に付着した堆積物(SiOC)のエッチングレートを、破線はサンプル2の処理容器内に付着した堆積物(SiO)のエッチングレートをそれぞれ示している。
本評価では、クリーニング処理を行う際、処理容器内の温度を30℃とし、処理容器内の圧力を10Torrから150Torrの範囲内で変化させた。他の処理条件は、上述の実施形態における処理条件範囲内の所定の条件とした。図7に本評価の評価結果を示す。図7の横軸はクリーニング処理における処理容器内の圧力(Torr)を示している。図7の縦軸、実線、破線は、それぞれ、図6におけるそれらと同義である。
本評価では、クリーニング処理を行う際、処理容器内の温度を200℃とし、処理容器内の圧力を10Torrから150Torrの範囲内で変化させた。他の処理条件は、上述の実施形態における処理条件範囲内の所定の条件とした。図8に本評価の評価結果を示す。図8の横軸、縦軸、実線、破線は、それぞれ、図7におけるそれらと同義である。
201 処理室
Claims (13)
- (a)基板上に炭素または窒素のうち少なくともいずれかを含む酸化膜を形成する処理を行った後の処理容器を準備する工程と、
(b)前記処理容器内へフッ化水素ガスを供給して前記処理容器内に付着した炭素または窒素のうち少なくともいずれかを含む堆積物を除去する工程と、を有し、
前記(b)を、前記処理容器内に付着した前記堆積物のエッチングレートの方が、前記処理容器内に存在する石英部材のエッチングレートよりも大きくなるような条件下で行うクリーニング方法。 - 前記(b)を、炭素および窒素のうち少なくともいずれかを含む酸化物のエッチングレートの方が、炭素および窒素を両方とも含まない酸化物のエッチングレートよりも大きくなるような温度下で行う請求項1に記載のクリーニング方法。
- 前記(b)を、炭素および窒素を両方とも含まない酸化物のエッチングが殆ど進行しないような温度下で行う請求項2に記載のクリーニング方法。
- 前記(b)では、前記処理容器内の温度を100℃以上400℃以下とする請求項1に記載のクリーニング方法。
- 前記(b)を、前記処理容器内に付着した前記堆積物のエッチングレートの方が、前記処理容器内に存在する石英部材のエッチングレートよりも大きくなるような圧力下で行う請求項4に記載のクリーニング方法。
- 前記(b)を、炭素および窒素を両方とも含まない酸化物のエッチングが殆ど進行しないような圧力下で行う請求項5に記載のクリーニング方法。
- 前記(b)を、前記処理容器内の圧力が10Torr以上200Torr以下の圧力となるように前記処理容器内を減圧した状態で行う請求項6に記載のクリーニング方法。
- 前記(b)を、前記フッ化水素ガスによるエッチング処理が所定のエッチング選択性を有するような条件下で行う請求項4に記載のクリーニング方法。
- 前記(b)を、前記膜を形成する処理における前記処理容器内の温度よりも高い温度下で行う請求項8に記載のクリーニング方法。
- 前記膜を形成する処理では、
前記処理容器内の基板に対して所定元素を含む原料および触媒を供給する工程と、
前記処理容器内の前記基板に対して反応体および触媒を供給する工程と、
を非同時に行うサイクルを所定回数行う請求項1に記載のクリーニング方法。 - (a)処理容器内の基板上に炭素または窒素のうち少なくともいずれかを含む酸化膜を形成する工程と、
(b)前記処理容器内へフッ化水素ガスを供給して前記処理容器内に付着した炭素または窒素のうち少なくともいずれかを含む堆積物を除去する工程と、を有し、
前記(b)を、処理容器内に付着した前記堆積物のエッチングレートの方が、前記処理容器内に存在する石英部材のエッチングレートよりも大きくなるような条件下で行う半導体装置の製造方法。 - 基板を収容する処理容器と、
前記処理容器内の基板に対して成膜ガスを供給する第1供給系と、
前記処理容器内へフッ化水素ガスを供給する第2供給系と、
前記処理容器内を加熱する加熱機構と、
前記処理容器内の基板に対して前記成膜ガスを供給することで前記基板上に炭素または窒素のうち少なくともいずれかを含む酸化膜を形成する処理(a)と、前記処理容器内へ前記フッ化水素ガスを供給して前記処理容器内に付着した炭素または窒素のうち少なくともいずれかを含む堆積物を除去する処理(b)と、を行わせ、前記(b)を、前記処理容器内に付着した前記堆積物のエッチングレートの方が、前記処理容器内に存在する石英部材のエッチングレートよりも大きくなるような条件下で行わせるように、前記第1供給系、前記第2供給系、および前記加熱機構を制御する制御部と、
を有する基板処理装置。 - (a)処理容器内の基板上に炭素または窒素のうち少なくともいずれかを含む酸化膜を形成する手順と、
(b)前記処理容器内へフッ化水素ガスを供給して前記処理容器内に付着した炭素または窒素のうち少なくともいずれかを含む堆積物を除去する手順と、をコンピュータによって基板処理装置に実行させ、
前記(b)を、前記処理容器内に付着した前記堆積物のエッチングレートの方が、前記処理容器内に存在する石英部材のエッチングレートよりも大きくなるような条件下で、前記コンピュータにより前記基板処理装置に実行させるプログラム。
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| WO2022202428A1 (ja) * | 2021-03-26 | 2022-09-29 | 東京エレクトロン株式会社 | クリーニング方法及びプラズマ処理装置 |
| JP2022165287A (ja) * | 2021-04-19 | 2022-10-31 | 株式会社Kokusai Electric | 基板処理方法、半導体装置の製造方法、基板処理装置、およびプログラム |
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| JP6857503B2 (ja) * | 2017-02-01 | 2021-04-14 | 株式会社Kokusai Electric | 半導体装置の製造方法、基板処理装置およびプログラム |
| US11605544B2 (en) | 2020-09-18 | 2023-03-14 | Applied Materials, Inc. | Methods and systems for cleaning high aspect ratio structures |
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| JP7641788B2 (ja) | 2021-03-26 | 2025-03-07 | 東京エレクトロン株式会社 | クリーニング方法及びプラズマ処理装置 |
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| JP2022165287A (ja) * | 2021-04-19 | 2022-10-31 | 株式会社Kokusai Electric | 基板処理方法、半導体装置の製造方法、基板処理装置、およびプログラム |
| JP7305700B2 (ja) | 2021-04-19 | 2023-07-10 | 株式会社Kokusai Electric | 基板処理方法、半導体装置の製造方法、基板処理装置、およびプログラム |
Also Published As
| Publication number | Publication date |
|---|---|
| US10968517B2 (en) | 2021-04-06 |
| JPWO2017199570A1 (ja) | 2019-02-14 |
| KR20180135024A (ko) | 2018-12-19 |
| KR102244383B1 (ko) | 2021-04-26 |
| US20190085459A1 (en) | 2019-03-21 |
| JP2020188279A (ja) | 2020-11-19 |
| JP6761031B2 (ja) | 2020-09-23 |
| CN109075072A (zh) | 2018-12-21 |
| CN109075072B (zh) | 2023-11-03 |
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