WO2024154233A1 - 基板処理方法、半導体装置の製造方法、基板処理装置及びプログラム - Google Patents
基板処理方法、半導体装置の製造方法、基板処理装置及びプログラム Download PDFInfo
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- WO2024154233A1 WO2024154233A1 PCT/JP2023/001225 JP2023001225W WO2024154233A1 WO 2024154233 A1 WO2024154233 A1 WO 2024154233A1 JP 2023001225 W JP2023001225 W JP 2023001225W WO 2024154233 A1 WO2024154233 A1 WO 2024154233A1
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- H—ELECTRICITY
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- 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
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- 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
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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
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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
- C23C16/34—Nitrides
- C23C16/345—Silicon nitride
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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
- C23C16/4412—Details relating to the exhausts, e.g. pumps, filters, scrubbers, particle traps
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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
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- 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
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45527—Atomic layer deposition [ALD] characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations
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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
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45544—Atomic layer deposition [ALD] characterized by the apparatus
- C23C16/45546—Atomic layer deposition [ALD] characterized by the apparatus specially adapted for a substrate stack in the ALD reactor
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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
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45553—Atomic layer deposition [ALD] characterized by the use of precursors specially adapted for ALD
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- C—CHEMISTRY; METALLURGY
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- 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
- C23C16/52—Controlling or regulating the coating process
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- 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
- H10P14/20—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials
- H10P14/29—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials characterised by the substrates
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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
- H10P14/694—Inorganic materials composed of nitrides
- H10P14/6943—Inorganic materials composed of nitrides containing silicon
- H10P14/69433—Inorganic materials composed of nitrides containing silicon the material being a silicon nitride not containing oxygen, e.g. SixNy or SixByNz
Definitions
- This disclosure relates to a substrate processing method, a semiconductor device manufacturing method, a substrate processing apparatus, and a program.
- Patent Document 1 discloses a technique for supplying a source gas and/or a reactive gas at a supply time that corresponds to the concentration distribution of the by-products formed on the substrate within the substrate surface as one step in the manufacturing process of a semiconductor device.
- This disclosure provides a technology that can control the decomposition rate of the process gas supplied to the substrate.
- a technique for processing a substrate disposed in a processing space by controlling a decomposition rate of a processing gas supplied into the processing space based on a predetermined relationship between the decomposition rate and residence time of the processing gas.
- This disclosure makes it possible to control the decomposition rate of the processing gas supplied to the substrate.
- FIG. 1 is a schematic vertical cross-sectional view of a substrate processing apparatus according to an embodiment of the present disclosure.
- FIG. 2 is a vertical cross-sectional view showing details of the substrate support portion in FIG.
- FIG. 3(A) is a diagram illustrating a first gas supply system in one embodiment of the present disclosure
- FIG. 3(B) is a diagram illustrating a second gas supply system in one embodiment of the present disclosure
- FIG. 3(C) is a diagram illustrating a third gas supply system in one embodiment of the present disclosure.
- FIG. 4A is a diagram showing a process chamber exhaust system according to an embodiment of the present disclosure
- FIG. 4B is a diagram showing a transfer chamber exhaust system according to an embodiment of the present disclosure.
- FIG. 5 is a schematic configuration diagram of a controller of a substrate processing apparatus according to an embodiment of the present disclosure, and is a block diagram showing a control system of the controller.
- FIG. 6 is a diagram showing a substrate processing sequence in one embodiment of the present disclosure.
- FIG. 7 is a graph showing the relationship between the residence time of the first gas and the decomposition rate.
- FIG. 8 is a graph showing the relationship between the flow rate of the first gas and the decomposition rate.
- Fig. 9A is a diagram showing the relationship between elapsed time and the supply amount of the first gas
- Fig. 9B is a diagram showing the relationship between elapsed time and the residence time of the first gas
- Fig. 9C is a diagram showing the relationship between elapsed time and the flow velocity of the first gas.
- 10A to 10C are diagrams illustrating examples of chemical structural formulas of the first gas in one embodiment of the present disclosure.
- the substrate processing apparatus 10 includes a reaction tube storage chamber 206b, which includes a cylindrical reaction tube 210 extending vertically, a heater 211 as a heating section (furnace body) installed on the outer periphery of the reaction tube 210, a gas supply structure 212 as a gas supply section, and a gas exhaust structure 213 as a gas exhaust section.
- the gas supply section may include an upstream rectifier 214 and nozzles 223 and 224, which will be described later.
- the gas exhaust section may include a downstream rectifier 215, which will be described later.
- the section of the reaction tube 210 where the substrate S is processed is called the processing chamber 201.
- the processing chamber 201 can also be called a processing space in which the substrate S is placed.
- the gas supply structure 212 is provided upstream of the reaction tube 210 in the gas flow direction, and gas is supplied from the gas supply structure 212 into the reaction tube 210, and the gas is supplied horizontally to the substrate S.
- the gas exhaust structure 213 is provided downstream of the reaction tube 210 in the gas flow direction, and the gas inside the reaction tube 210 is exhausted from the gas exhaust structure 213.
- the gas supply structure 212, the inside of the reaction tube 210, and the gas exhaust structure 213 are horizontally connected.
- An upstream straightening section 214 that straightens the flow of gas supplied from the gas supply structure 212 is provided on the upstream side of the reaction tube 210 between the reaction tube 210 and the gas supply structure 212.
- a downstream straightening section 215 that straightens the flow of gas exhausted from the reaction tube 210 is provided on the downstream side of the reaction tube 210 between the reaction tube 210 and the gas exhaust structure 213.
- the lower end of the reaction tube 210 is supported by a manifold 216.
- the reaction tube 210, the upstream rectifier 214, and the downstream rectifier 215 are continuous structures and are made of materials such as quartz or SiC. These are made of heat-transmitting materials that transmit the heat radiated from the heater 211. The heat from the heater 211 heats the substrate S and the gas.
- Gas supply structure 212 has gas supply pipes 251 and 261 connected thereto, and also has a distribution section 225 that distributes the gas supplied from each gas supply pipe.
- a plurality of nozzles 223 and 224 are provided downstream of distribution section 225.
- Gas supply pipe 251 and gas supply pipe 261 supply different types of gas as described below.
- Nozzles 223 and 224 are arranged in an up-down relationship or a side-by-side relationship.
- gas supply pipe 251 and gas supply pipe 261 are also collectively referred to as gas supply pipe 221.
- Each nozzle is also referred to as a gas discharge section.
- Distribution section 225 is configured so that gas is supplied from gas supply pipe 251 to nozzle 223, and from gas supply pipe 261 to nozzle 224.
- the upstream straightening section 214 has a housing 227 and a partition plate 226.
- the partition plate 226 extends horizontally and has a continuous structure without holes.
- the horizontal direction here refers to the side wall direction of the housing 227.
- Multiple partition plates 226 are arranged in the vertical direction.
- the partition plates 226 are fixed to the side wall of the housing 227 and are configured so that gas does not move beyond the partition plate 226 downward or upward into adjacent areas.
- Each partition plate 226 is provided at a position corresponding to each substrate S.
- Nozzles 223 and 224 are provided between the partition plates 226 and between the partition plates 226 and the housing 227.
- the gas discharged from the nozzles 223 and 224 has its flow adjusted by the partition plate 226 and is supplied to the surface of the substrate S. In other words, when viewed from the substrate S, the gas is supplied from the lateral direction of the substrate S.
- the downstream straightening section 215 is configured so that when the substrate S is supported on the substrate support 300 described below, the ceiling is higher than the substrate S arranged at the top, and the bottom is lower than the substrate S arranged at the bottom of the substrate support 300.
- the downstream straightening section 215 has a housing 231 and a partition plate 232.
- the partition plate 232 extends horizontally and has a continuous structure without holes.
- the horizontal direction here refers to the side wall direction of the housing 231.
- multiple partition plates 232 are arranged in the vertical direction.
- the partition plate 232 is fixed to the side wall of the housing 231 and is configured so that gas does not move beyond the partition plate 232 downward or upward into adjacent areas.
- a flange 233 is provided on the side of the housing 231 that comes into contact with the gas exhaust structure 213.
- the partition plates 232 are provided at positions corresponding to the substrates S, and at positions corresponding to the partition plates 226. It is desirable that the corresponding partition plates 226 and 232 are of the same height. Furthermore, when processing the substrate S, it is desirable to align the height of the substrate S with the heights of the partition plates 226 and 232.
- the pressure loss in the vertical direction can be made uniform upstream and downstream of each substrate S. That is, as shown by the arrows in the figure, a horizontal gas flow can be reliably formed in which the vertical flow is suppressed from the partition plate 226, over the substrate S, to the partition plate 232. Therefore, the difference in gas pressure on each substrate S can be reduced. This allows each substrate S to be processed uniformly. In addition, the difference in the residence time ⁇ and/or flow velocity v of the first gas, which will be described later, can be reduced on each substrate S. This allows the difference in the decomposition rate X of the first gas supplied to each substrate S to be reduced.
- the gas exhaust structure 213 is provided downstream of the downstream straightening section 215.
- the gas exhaust structure 213 is mainly composed of a housing 241 and an exhaust pipe connection section 242.
- a flange 243 is provided on the downstream straightening section 215 side of the housing 241.
- the housings 231 and 241 have a structure in which the heights of their ceilings and bottoms are continuous.
- An exhaust hole 244 is formed on the downstream side of the housing 241, below or horizontally, to exhaust gas that has passed through the downstream straightening section 215.
- the gas exhaust structure 213 is provided laterally of the reaction tube 210, and is a lateral exhaust structure that exhausts gas from the lateral direction of the substrate S.
- the transfer chamber 217 is installed at the bottom of the reaction tube 210 via a manifold 216.
- a vacuum transfer robot places (mounts) the substrate S on a substrate support (hereinafter, sometimes simply referred to as a boat) 300 via a substrate entrance, and the vacuum transfer robot removes (loads) the substrate S from the substrate support 300.
- a substrate support hereinafter, sometimes simply referred to as a boat
- the inside of the transfer chamber 217 can store the substrate support 300, the partition plate support 310, and the vertical drive mechanism 400 that drives the substrate support 300 and the partition plate support 310 (collectively referred to as the substrate holder) in the vertical and rotational directions.
- the substrate support 300 is shown raised by the vertical drive mechanism 400 and stored in the reaction tube 210.
- the vertical drive mechanism 400 includes a rotation drive mechanism 430 that rotates the substrate support 300 and the partition support 310 together, and a boat up-down mechanism 420 that drives the substrate support 300 vertically relative to the partition support 310.
- the rotation drive mechanism 430 and the boat up-down mechanism 420 are fixed to a base flange 401 that serves as a lid supported by a side plate 403 on a base plate 402.
- An O-ring 446 for vacuum sealing is installed on the upper surface of the base flange 401, and as shown in FIG. 1, the inside of the reaction tube 210 can be kept airtight by being driven by the vertical drive motor 410 to raise the base flange 401 to a position where the upper surface of the base flange 401 is pressed against the transfer chamber 217.
- the support 440 fixed to the partition support 310 and the support 441 fixed to the substrate support 300 are connected by a vacuum bellows 443.
- the substrate support unit is composed of at least a substrate support 300 that supports a substrate S, and is stored in the reaction tube 210.
- the substrate S is disposed directly below the inner wall of the top plate of the reaction tube 210.
- the substrate support unit transfers the substrate S by a vacuum transport robot through a substrate loading port (not shown) inside the transfer chamber 217, and transports the transferred substrate S into the reaction tube 210 to perform a process of forming a thin film on the surface of the substrate S.
- the substrate loading port is provided, for example, on a side wall of the transfer chamber 217.
- the substrate support unit may also include a partition plate support unit 310.
- the substrate support 300 has a plurality of substrates S placed vertically (perpendicularly) at a predetermined interval by a plurality of support rods 315 supported by a base 311.
- the substrates S supported by the support rods 315 are separated by disk-shaped partitions 314 fixed (supported) at a predetermined interval to posts 313 supported by the partition support section 310.
- the partitions 314 are disposed directly below the substrates S, and disposed above and/or below the substrates S.
- the partitions 314 separate the spaces between the substrates S.
- the predetermined interval between the substrates S placed on the substrate support 300 is the same as the vertical interval between the partitions 314 fixed to the partition support section 310.
- the diameter of the partitions 314 is formed to be larger than the diameter of the substrates S.
- the base 311, the partition plate 314, and the multiple support rods 315 are formed of materials such as quartz or SiC. Note that, although an example in which five substrates S are supported by the substrate support 300 is shown here, this is not limiting. For example, the substrate support 300 may be configured to be capable of supporting approximately 5 to 50 substrates S. Note that the partition plate 314 is also called a separator.
- the partition plate 314 is positioned at a height corresponding to the partition plate 226 and/or the partition plate 232. It is even more preferable that the height of the partition plate 314 is aligned with that of the partition plate 226 and the partition plate 232.
- the partition plate support part 310 and the substrate support 300 are driven by the vertical drive mechanism part 400 in the vertical direction between the reaction tube 210 and the transfer chamber 217, and in the rotational direction around the center of the substrate S supported by the substrate support 300.
- the gas supply pipe 251 is provided with, in order from the upstream direction, a first gas source 252, a mass flow controller (MFC) 253 which is a flow rate controller (flow rate control section), a valve 275 which is an on-off valve, a tank 259 which is a storage section for storing gas, and a valve 254 which is an on-off valve.
- MFC mass flow controller
- the first gas source 252 is a source of a first gas containing a first element (also called a "first element-containing gas").
- the first gas is a raw material gas, i.e., one of the process gases.
- the first gas supply system 250 (also called the source gas supply system or the process gas supply system) is mainly composed of the gas supply pipe 251, the MFC 253, the valve 275, the tank 259, and the valve 254.
- the first gas supply system 250 may also include a first gas source 252.
- Gas supply pipe 255 is connected between valve 275 and tank 259 in gas supply pipe 251.
- Gas supply pipe 255 is provided with, in order from the upstream direction, an inert gas source 256, an MFC 257, and a valve 258 which is an on-off valve.
- An inert gas is supplied from inert gas source 256.
- the first inert gas supply system is mainly composed of the gas supply pipe 255, the MFC 257, and the valve 258.
- the inert gas supplied from the inert gas source 256 acts as a purge gas that purges gas remaining in the reaction tube 210.
- the inert gas source 256 may be included in the first inert gas supply system.
- the first inert gas supply system may be added to the first gas supply system 250.
- the gas supply pipe 261 is provided with, in order from the upstream direction, a second gas source 262, an MFC 263, a valve 276, a tank 269, and a valve 264.
- the second gas source 262 is a source of a second gas containing a second element (hereinafter also referred to as a "second element-containing gas").
- the second gas is a gas different from the first gas, and may be one of the processing gases.
- the second gas may be considered as a reaction gas that reacts with a precursor of the first gas, which is a raw material gas, or a modifying gas that modifies the surface of the substrate S.
- the second gas supply system 260 (also called a reaction gas supply system or a process gas supply system) is mainly composed of the gas supply pipe 261, the MFC 263, the valve 276, the tank 269, and the valve 264.
- the second gas supply system 260 may also include a second gas source 262.
- a gas supply pipe 265 is connected to the gas supply pipe 261 between the valve 276 and the tank 269.
- an inert gas source 266, an MFC 267, and a valve 268 which is an on-off valve are provided in this order from the upstream direction.
- An inert gas is supplied from the inert gas source 266.
- the second inert gas supply system is mainly composed of the gas supply pipe 265, the MFC 267, and the valve 268.
- the inert gas supplied from the inert gas source 266 acts as a purge gas that purges gas remaining in the reaction tube 210.
- the inert gas source 266 may be included in the second inert gas supply system.
- the second inert gas supply system may be added to the second gas supply system 260.
- the gas supply pipe 271 is provided with a third gas source 272, an MFC 273, and a valve 274 in this order from the upstream direction.
- the gas supply pipe 271 is connected to the transfer chamber 217.
- an inert gas is supplied.
- the third gas source 272 is an inert gas source.
- the third gas supply system 270 is mainly composed of the gas supply pipe 271, the MFC 273, and the valve 274.
- the third gas source 272 may be included in the third gas supply system 270.
- the third gas supply system 270 is also called a transfer chamber supply system.
- An exhaust system 280 for exhausting the atmosphere in the reaction tube 210 has an exhaust pipe 281 communicating with the reaction tube 210 , and is connected to the housing 241 via an exhaust pipe connection part 242 .
- the exhaust pipe 281 is connected to a vacuum pump 284 as a vacuum exhaust device via a valve 282 and an APC (Auto Pressure Controller) valve 283 as a pressure regulator (pressure adjustment unit), and is configured to be able to evacuate the reaction tube 210 to a predetermined pressure (vacuum level).
- the exhaust pipe 281, the valve 282, and the APC valve 283 are collectively called the exhaust system 280.
- the exhaust system 280 is also called the process chamber exhaust system.
- the exhaust system 280 may include the vacuum pump 284.
- the exhaust system 290 which exhausts the atmosphere of the transfer chamber 217, is connected to the transfer chamber 217 and has an exhaust pipe 291 that communicates with its interior.
- a vacuum pump 294 is connected to the exhaust pipe 291 via a valve 292 and an APC valve 293, and is configured to evacuate the transfer chamber 217 to a predetermined pressure.
- the exhaust pipe 291, the valve 292, and the APC valve 293 are collectively referred to as the exhaust system 290.
- the exhaust system 290 is also referred to as the transfer chamber exhaust system.
- the exhaust system 290 may also include the vacuum pump 294.
- the substrate processing apparatus 10 has a controller 600 that controls the operation of each part of the substrate processing apparatus 10.
- the controller 600 is generally shown in FIG. 5.
- the controller 600 is configured as a computer equipped with a CPU (Central Processing Unit) 601, a RAM (Random Access Memory) 602, a storage device 603 as a storage unit, and an I/O port 604.
- the RAM 602, the storage device 603, and the I/O port 604 are configured to be able to exchange data with the CPU 601 via an internal bus 605.
- the storage device 603 is composed of, for example, a flash memory, a hard disk drive (HDD), etc.
- the storage device 603 stores readable data such as a control program that controls the operation of the substrate processing device 10 and a process recipe that describes the procedures and conditions for substrate processing.
- the process recipe functions as a program, which is a combination of steps in the substrate processing process described below that are executed by the controller 600 to obtain a predetermined result.
- the process recipe and control program will be collectively referred to as simply a program.
- the word program may include only the process recipe, only the control program, or both.
- the RAM 602 is configured as a memory area (work area) in which programs and data read by the CPU 601 are temporarily stored.
- the I/O port 604 is connected to the above-mentioned vertical drive mechanism 400, heater 211, APC valves 283, 293, vacuum pumps 284, 294, MFCs 253, 257, 263, 267, 273, valves 254, 258, 264, 268, 274, 275, 276, rotation drive mechanism 430, etc.
- the CPU 601 is configured to read and execute a control program from the storage device 603, and to read a process recipe from the storage device 603 in response to input of an operation command from the input/output device 681, etc.
- the CPU 601 is configured to control the vertical drive mechanism 400 to raise and lower the substrate support 300, the heater 211 to heat the substrate, the APC valves 283 and 293 to open and close, the vacuum pumps 284 and 294 to start and stop, the MFCs 253, 257, 263, 267 and 273 to adjust the flow rates of various gases, the valves 254, 258, 264, 268, 274, 275 and 276 to open and close, the rotation of the substrate support 300 by the rotation drive mechanism 430 to adjust the rotation speed, etc., in accordance with the contents of the read process recipe.
- the controller 600 can be configured by installing the program in the computer using an external storage device (e.g., a magnetic disk such as a hard disk, an optical disk such as a DVD, a magneto-optical disk such as an MO, or a semiconductor memory such as a USB memory) 682 that stores the above-mentioned program.
- the means for supplying the program to the computer is not limited to supplying it via the external storage device 682.
- the program may be supplied without going through the external storage device 682 by using a communication means such as the Internet or a dedicated line.
- the storage device 603 and the external storage device 682 are configured as computer-readable recording media on which the program is recorded. Hereinafter, these are collectively referred to simply as recording media. In this specification, when the term recording medium is used, it may include only the storage device 603 alone, only the external storage device 682 alone, or both.
- a film formation process will be described in which a first gas and a second gas are used to form a film in a recess such as a trench or a hole in a substrate S.
- a first gas for example, disilicon hexachloride ( Si2Cl6 , hexachlorodisilane, abbreviated as HCDS) gas shown in Fig. 10(A) can be used.
- substrate used in this specification can mean the substrate itself, or a laminate of the substrate and a specified layer or film formed on its surface.
- surface of the substrate used in this specification can mean the surface of the substrate itself, or the surface of a specified layer, etc. formed on the substrate.
- forming a specified layer on a substrate can mean forming a specified layer directly on the surface of the substrate itself, or forming a specified layer on a layer, etc. formed on the substrate.
- wafer is synonymous with the word "substrate”.
- the transfer chamber pressure adjustment step S102 will now be described.
- the pressure inside the transfer chamber 217 is adjusted to the same level as that of a vacuum transfer chamber (not shown) adjacent to the transfer chamber 217.
- the exhaust system 290 is operated to exhaust the atmosphere in the transfer chamber 217 so that the atmosphere in the transfer chamber 217 is at a vacuum level.
- the substrate loading step S104 will be described.
- the transfer chamber 217 reaches a vacuum level, it starts to transfer the substrate S.
- the gate valve is opened and the vacuum transfer robot loads the substrate S into the transfer chamber 217.
- the substrate support 300 waits in the transfer chamber 217, and the substrates S are transferred to the substrate support 300.
- the vacuum transport robot is retracted, and the substrate support 300 is raised by the vertical drive mechanism 400 to move the substrates S into the reaction tube 210.
- the surface of the substrate S is positioned so that it is flush with the height of the partition plates 226 and 232.
- the heating step S106 will be described.
- the pressure inside the reaction tube 210 is controlled to be a predetermined pressure, and the surface temperature of the substrate S is controlled to be a predetermined temperature.
- the temperature of the heater 211 is controlled so that the temperature of the substrate S is, for example, 100° C. to 1500° C., preferably 200° C. to 1000° C., and more preferably 400° C. to 800° C.
- the pressure inside the reaction tube 210 may be, for example, 5 Pa to 100 kPa.
- a first gas supply step of flush-supplying a first gas to the substrate S and a second gas supply step of flush-supplying a second gas to the substrate S are performed one or more times in accordance with a process recipe to form a predetermined film on the substrate S having a recess on its surface.
- step S1 First gas supply step, step S1>
- the first gas is flush-supplied to the processing chamber 201 inside which the substrate S is placed.
- flush supply refers to supplying a large flow rate of gas into the reaction tube 210 in a short period of time.
- a first gas is stored in advance in a tank 259 provided in the gas supply pipe 251.
- the pressure in the tank 259 at this time is set to, for example, 100 to 100 ⁇ 10 3 Pa, preferably 1.0 ⁇ 10 3 to 80 ⁇ 10 3 Pa, and more preferably 5.0 ⁇ 10 3 Pa to 60 ⁇ 10 3 Pa.
- a valve 254 provided downstream of the tank 259 between the tank 259 and the nozzle 223 is opened, and the first gas is supplied into the gas supply pipe 251 from the tank 259 in which the first gas is stored in advance.
- the pressure (total pressure) inside the processing chamber 201 is set to, for example, 10 to 1.0 ⁇ 10 3 Pa.
- the valve 254 is closed to stop the supply of the first gas into the gas supply pipe 251.
- the valve 254 is closed to stop the supply of the first gas into the gas supply pipe 251 after a time within a range of, for example, 0.1 to 10 seconds has elapsed.
- the first gas is supplied in large quantities from the gas supply structure 212 through the upstream rectifier 214 into the reaction tube 210 in a short period of time, and is then exposed and exhausted through the space above the substrate S, the downstream rectifier 215, the gas exhaust structure 213, and the exhaust pipe 281.
- the valve 282 and the APC valve 283 are in an open state.
- the valve 275 may be in an open state or a closed state.
- the decomposition rate of the first gas in the processing chamber 201 changes within a range of 0% to 100% as the residence time ⁇ of the first gas changes.
- a decomposition rate of 0% means that there is no change over time in the decomposition rate of the first gas.
- a decomposition rate of 0% is a state in which the first gas supplied into the processing chamber 201 is exhausted from the processing chamber 201 as the first gas.
- a decomposition rate of 100% is a state in which all of the first gas supplied into the processing chamber 201 is exhausted from the processing chamber 201 in a state other than as the first gas. This also applies to the following explanations.
- the residence time of a gas refers to a number that is an index of the time until the gas supplied into the processing chamber 201 is exhausted from the processing chamber 201.
- the residence time of a first gas is defined as the time until the first gas supplied into the processing chamber 201 is exhausted from the processing chamber 201. It may also be a number that is an index of the time until the gas supplied into the processing chamber 201 is exhausted from the processing chamber 201. It may also be a number that is an index of the time until the gas that has reached the processing space escapes to the outside of the processing space.
- the residence time of the first gas is defined as the time until the first gas reaches the substrate S and leaves the substrate S.
- the residence time of the first gas may be, for example, the time until the first gas reaches the processing space and escapes from the processing space.
- the time from when the first gas is discharged from a gas supply unit such as the nozzle 223 until it reaches the exhaust hole 244 may be used.
- the residence time of the first gas may be the time from when the supply of the first gas starts to when it ends, for example, the time from when the valve 254 downstream of the tank 259 is opened to when the valve 254 is closed, or the time from when a specific component of the substrate processing apparatus 10 starts or ends a specific operation to when the specific operation starts or ends.
- the residence time of the first gas may be a value obtained by dividing the diameter of the substrate S by the flow rate of the first gas on the substrate S.
- the residence time of the first gas may be a value obtained by dividing the volume of the processing chamber 201 by the volume of the gas exhausted from the processing chamber 201 per unit time.
- the residence time of the first gas may be a time until the number of molecules of the first gas in the processing chamber at a certain point in time decreases to a specific value.
- the residence time ⁇ of the first gas in the processing chamber 201 is set according to the decomposition rate X of the first gas based on a predetermined relationship between the residence time ⁇ of the first gas in the processing chamber 201 and the decomposition rate X of the first gas in the processing chamber 201.
- the decomposition rate X of the first gas supplied to the substrate S is controlled by controlling the residence time ⁇ of the first gas.
- Fig. 7 is a semi-logarithmic graph in which the horizontal axis indicates the residence time ⁇ (seconds) of the first gas in logarithm, and the vertical axis indicates the decomposition rate X (%) of the first gas.
- the decomposition rate X of the first gas has a logarithmic relationship with the residence time ⁇ in the processing chamber 201 becoming longer.
- a first gas having a decomposition rate X of 50% can be supplied to the substrate S.
- a first gas having a decomposition rate X of 50% or less can be supplied to the substrate S.
- a first gas having a decomposition rate X of around 0% can be supplied to the substrate S.
- the decomposition rate can be controlled based on a predetermined relationship between the decomposition rate of the first gas in the processing space and the residence time.
- the decomposition rate can be predicted based on a predetermined relationship between the decomposition rate of the first gas in the processing space and the residence time under certain conditions.
- the value of the residence time ⁇ of the first gas can be controlled within a range (first range) equal to or less than the first decomposition rate X1.
- the decomposition rate of the first gas can be made lower than the decomposition rate of the first gas at the residence time ⁇ of the first gas at a predetermined value.
- the value of the residence time ⁇ of the first gas can be controlled within a range (second range) equal to or less than the second decomposition rate X2.
- the decomposition rate of the first gas can be made higher than the decomposition rate of the first gas at the residence time ⁇ of the first gas at a predetermined value.
- the residence time ⁇ of the first gas in the processing chamber 201 can be controlled by controlling the flow velocity v of the first gas in the processing chamber 201. That is, by increasing (also called speeding up) the flow velocity v of the first gas, the residence time of the first gas in the processing chamber 201 can be shortened. Also, by decreasing (also called slowing down) the flow velocity v of the first gas, the residence time of the first gas in the processing chamber 201 can be lengthened.
- the gas flow rate refers to a number that is an index of the distance that the gas supplied into the processing chamber 201 travels per unit time. It may also be a number that is an index of the distance that the gas travels per unit time within the processing chamber 201. It may also be a number that is an index of the distance that the gas travels per unit time within the processing space.
- the flow velocity v of the first gas is the average flow velocity of the first gas on the substrate S.
- the flow velocity v of the first gas may be the average flow velocity from one location (or region) to another location (or region), such as the average flow velocity from when the first gas is discharged from a gas supply unit such as the nozzle 223 into the processing chamber 201 until it reaches the exhaust hole 244.
- the average flow velocity of the first gas in the processing space may be used.
- the average flow velocity of the first gas in the processing chamber 201 may be used.
- the flow velocity of the first gas at a certain point on the substrate S, or in the processing space or processing chamber 201 may be used.
- the residence time or flow rate of the first gas may be, for example, a value measured, calculated, or estimated using some means, or a value obtained by simulation.
- Fig. 8 represents the flow velocity v (m/sec) of the first gas
- the vertical axis represents the decomposition rate X (%) of the first gas.
- the decomposition rate X of the first gas has a relationship in which the decomposition rate X decreases more gradually as the flow rate v in the processing chamber 201 increases.
- a first gas having a decomposition rate X of 50% can be supplied to the substrate S.
- a first gas having a decomposition rate X of 50% or less can be supplied to the substrate S.
- the decomposition rate can be controlled based on a predetermined relationship between the decomposition rate and the flow rate of the first gas in the processing space.
- the decomposition rate can be predicted based on a predetermined relationship between the decomposition rate and the flow rate of the first gas in the processing space under certain conditions.
- the flow velocity v of the first gas equal to or greater than a second flow velocity v2 that is smaller than the first flow velocity v1
- the flow velocity v of the first gas smaller than a predetermined value, it is possible to make the decomposition rate of the first gas higher than the decomposition rate of the first gas when the flow velocity v of the first gas is a predetermined value.
- the decomposition rate X of the first gas can be set within the range of 0% to 100%. Furthermore, by controlling it within the range of 1.00 to 0.10 seconds, the decomposition rate X can be set within the range of 50% to 100%. Furthermore, by controlling it within the range of 0.10 to 0.01 seconds, the decomposition rate X can be set within the range of 0% to 50%. Furthermore, by controlling it to 0.01 seconds or more, the decomposition rate X can be 0%, i.e., the first gas can be left undecomposed. Furthermore, by setting it to greater than 1.00 seconds, the decomposition rate X can be set to 100%.
- the decomposition rate X of the first gas can be set within a range of 0% to 50% by controlling the flow rate v of the first gas in this step to 5.0 m/sec or more. Furthermore, by setting the flow rate v of the first gas to, for example, 10 m/sec or more, the decomposition rate X can be set within a range of 0% to 25%. Furthermore, by setting the flow rate v of the first gas to, for example, 15 m/sec or more, the decomposition rate X can be set within a range of 0% to 15%.
- the decomposition rate X can be set to 0%, i.e., the first gas can be left undecomposed. Furthermore, by setting the flow rate v to less than 5.0 m/sec, the decomposition rate X can be set to 50 to 100%.
- the period from the start of the supply of the first gas to t1 seconds is defined as the entry region a1
- the period from t1 seconds to t2 seconds is defined as the exposure region a2.
- the end time t1 of the entry region a1 and the end time t2 of the exposure region a2 are set appropriately according to the processing target and the processing contents.
- FIG. 9(A) when the supply of the first gas starts, the supply amount of the first gas is maximum, and the supply amount of the first gas in the entry region a1 decreases rapidly. Then, following this, the supply amount of the first gas in the exposure region a2 decreases gradually. Also, as shown in FIG.
- the residence time of the first gas in the entry region a1 increases rapidly, and then, following this, the residence time of the first gas in the exposure region a2 increases gradually. Also, as shown in FIG. 9(C), when the supply of the first gas starts, the flow rate of the first gas is the fastest (high flow rate), and decreases rapidly in the entry region a1. Following this, the flow rate of the first gas gradually decreases in the exposed area a2.
- the first gas flows at a relatively high flow rate, and the residence time of the first gas in the processing chamber 201 can be shortened. That is, based on the relationship between the residence time of the first gas and the decomposition rate X of the first gas as shown in FIG. 7, a first gas having a low decomposition rate within a first range, for example, 0 to 50%, preferably 0 to 15%, and more preferably 0%, can be supplied to the substrate S.
- the flow rate of the first gas is relatively high and the supply amount of the first gas is relatively high. That is, a large flow rate of the first gas is supplied within a short time from the start of the supply of the first gas.
- the amount of one or both of the process gas and the first element-containing material described later adsorbed on the surface of the substrate S increases during the period from when the reaction by-products described later are generated to when they are adsorbed on the surface of the substrate S. Therefore, the film formation rate can be improved.
- the amount of the first gas that reaches the deep side of the recess within a short time from the start of the supply of the first gas increases.
- the step coverage can be improved.
- the more reactive the gas is the more likely it is to be adsorbed to the opening side of the recess and the less likely it is to be adsorbed to the deeper side of the recess. Therefore, when forming a film in a recess using a gas that generates a more reactive substance by decomposition (e.g., HCDS gas) as the first gas, the shorter the residence time ⁇ of the first gas and/or the higher the flow rate v of the first gas, the lower the decomposition rate X, and the better the step coverage.
- a gas that generates a more reactive substance by decomposition e.g., HCDS gas
- step coverage by controlling the residence time ⁇ of the first gas and/or the flow rate v of the first gas so that the decomposition rate X of the first gas is 0%. It is also preferable to improve the step coverage by controlling the residence time ⁇ of the first gas and/or the flow rate v of the first gas so that the decomposition rate X of the first gas is 0% in at least a part of the entry area a1.
- the decomposition rate X can be set to a relatively low value of 0% to 25%, which is advantageous for improving step coverage. Furthermore, by setting the flow rate of the first gas to, for example, 15 m/s or more, the decomposition rate can be set to an even lower value within the range of 0% to 15%, which is preferable for improving step coverage. Furthermore, by controlling the flow rate to 20.0 m/s or more, the decomposition rate can be set to 0%, i.e., the first gas can be left undecomposed, which is even more preferable for improving step coverage. Furthermore, the film formation rate can be controlled by setting the flow rate of the first gas to, for example, 5 to 10 m/s in the entry region a1 and setting the decomposition rate X to 25% to 50%.
- the first gas flows at a low flow rate, and the residence time of the first gas in the processing chamber 201 can be increased. That is, based on the relationship between the residence time of the first gas and the decomposition rate X of the first gas as shown in FIG. 7, a first gas having a high decomposition rate within the second range, for example, 15 to 100%, preferably 25 to 100%, and more preferably 50 to 100%, can be supplied to the substrate S. Therefore, the film formation rate can be controlled by the decomposition rate X.
- the decomposition rate of the first gas in the exposure area a2 can be 50% or more if the flow rate of the first gas is, for example, 5.0 m/sec or less, 25% or more if the flow rate is 10 m/sec or less, and 15% or more if the flow rate is 15 m/sec or less. Therefore, the film formation rate can be controlled by the decomposition rate X.
- the decomposition rate X of the first gas supplied to the substrate S can be changed by flushing the first gas. Also, in this step, the flow rate of the first gas is controlled by flushing the first gas, and this controls the residence time of the first gas in the processing chamber 201, making it possible to control the decomposition rate X of the first gas.
- the supply amount of the first gas can be increased at the start of the supply of the first gas by flushing the first gas.
- the supply amount of the first gas per unit time per substrate S may be, for example, 0.001 to 15 slm, preferably 0.05 to 10 slm, and more preferably 0.010 to 5 slm. If it is less than 0.001 slm, the partial pressure of the first gas in the processing chamber 201 may be reduced, and the film formation rate may decrease. If it is more than 15 slm, the decomposition of the first gas may proceed excessively due to an increase in the partial pressure of the first gas in the processing chamber 201.
- the flow rate can be changed by controlling the flow rate of the first gas while suppressing a decrease in the film formation rate and excessive decomposition of the first gas. Furthermore, when the flow rate is set to 0.05 to 10 slm, the flow rate can be changed by controlling the flow rate of the first gas while further suppressing the decrease in the film formation rate and the decomposition of the first gas. When the flow rate is set to 0.010 to 5 slm, the flow rate can be changed by controlling the flow rate of the first gas while sufficiently suppressing the decrease in the film formation rate and the excessive decomposition of the first gas.
- the first gas whose pressure has been increased (boosted) in the tank 259 can be supplied into the processing chamber 201. This makes it possible to increase the flow rate of the first gas at the start of the supply.
- this step includes a process of controlling the decomposition rate X of the first gas within a first range, for example, 0 to 25%, and a process of controlling it within a second range, for example, 25 to 100%.
- this step includes a flush supply of the first gas, whereby a low decomposition rate supply with a short residence time of the first gas is followed by a high decomposition rate supply with a long residence time. This makes it possible to continuously supply first gases with different decomposition rates, and makes it possible to prevent reaction by-products and the like from being adsorbed to the adsorption sites when purging or exhausting the inside of the processing chamber 201.
- by supplying a large amount of low decomposition rate gas in a short time followed by a high decomposition rate supply it is possible to prevent reaction by-products, which will be described later, from being adsorbed to the adsorption sites.
- the step coverage performance can be improved, and in the process of controlling it within a second range that is at least partially different from the first range, the film formation rate can be improved. In other words, it is possible to achieve both improved step coverage performance and improved film formation rate.
- the valve 282 and the APC valve 283 are open, and the reaction tube 210 is evacuated by the vacuum pump 284 while the first gas is being supplied into the processing chamber 201. This reduces the pressure in the processing chamber 201, increases the flow rate of the first gas, and shortens the residence time ⁇ of the first gas in the processing chamber 201.
- the valve 258 may be opened to allow a gas having a molecular weight smaller than that of the first gas to flow as a low molecular weight gas into the gas supply pipe 251 via the gas supply pipe 255. That is, a mixed processing gas in which the low molecular weight gas and the first gas are mixed may be supplied to the processing chamber 201.
- the low molecular weight gas is preferably a gas that is low in reactivity with the first gas.
- An inert gas may be used as the low molecular weight gas.
- the valves 268 and 264 may be opened to allow an inert gas to flow into the gas supply pipe 261. In this case, the inert gas supplied from the gas supply pipe 261 may also be considered to be included in the mixed processing gas.
- nitrogen (N 2 ), helium (He), argon (Ar), or the like can be used as the low molecular weight gas.
- the average molecular weight of the gas supplied in this step can be made smaller.
- the mixed process gas which has a smaller average molecular weight, has a higher flow rate than the first gas. This makes it possible to make the flow rate of the mixed process gas faster than the flow rate of the first gas.
- the amount of low molecular weight gas in the mixed process gas may be, for example, 50 times or less. If it is more than 50 times the amount of the first gas, the partial pressure of the first gas in the process chamber 201 may decrease with an increase in the proportion of low molecular weight gas in the mixed process gas, which may lead to a decrease in the film formation rate and step coverage. If the amount of low molecular weight gas in the mixed process gas is within a range of 50 times or less the amount of the first gas in the mixed process gas, the flow rate of the first gas can be controlled while suppressing the effect of the decrease in the partial pressure of the first gas.
- the amount of low molecular weight gas in the mixed process gas is, for example, 40 times or less, the effect of the decrease in the partial pressure of the first gas is further suppressed. Furthermore, if it is, for example, 30 times or less, the effect of the decrease in the partial pressure of the first gas is further suppressed, so that the step coverage is less likely to decrease even for recesses with a high aspect ratio while controlling the decomposition rate.
- the volume of the first gas supplied into the processing chamber 201 per unit time may be set to 0.0005 to 6 times, preferably 0.0015 to 3 times, and more preferably 0.0030 to 1 times the volume of the processing chamber 201. If it is set to less than 0.0005 times, the partial pressure of the first gas in the processing chamber 201 may be lowered, and the film formation rate may decrease. If it is set to more than 6 times, the partial pressure of the first gas in the processing chamber 201 may increase, and the decomposition of the first gas may proceed excessively.
- the flow rate can be changed by controlling the flow rate of the first gas while suppressing a decrease in the film formation rate and excessive decomposition of the first gas. Furthermore, if it is set to 0.0015 to 3 times, the flow rate can be changed by controlling the flow rate of the first gas while further suppressing a decrease in the film formation rate and decomposition of the first gas. When the ratio is set to 0.0030 to 1, the flow rate can be changed by controlling the flow rate of the first gas while sufficiently suppressing the decrease in the film formation rate and the excessive decomposition of the first gas.
- the volume of gas exhausted from the processing chamber 201 per unit time may be set to 50 to 4000 times, preferably 100 to 2000 times, and more preferably 300 to 1000 times the volume of the processing chamber 201. If it is set to less than 50 times, the time from when the first gas is supplied until the pressure in the processing chamber 201 increases becomes short, and it may be difficult to make the flow rate of the first gas high. Therefore, it may be difficult to control the decomposition rate of the first gas to be kept low (for example, the decomposition rate of the first gas is 25% or less, 15% or less, or 0% or less) for a certain period of time.
- the partial pressure of the first gas in the processing chamber 201 may be low, and the film formation rate may decrease. If it is set to 50 to 4000 times, it is easy to control the decomposition rate of the first gas to be kept low for a certain period of time while suppressing the decrease in the film formation rate of the first gas. Furthermore, when the ratio is set to 100 to 2000 times, it becomes easier to control the decomposition rate of the first gas to be kept low for a certain period of time while further suppressing the decrease in the film formation rate of the first gas. Furthermore, when the ratio is set to 300 to 1000 times, it becomes easier to control the decomposition rate of the first gas to be kept low for a certain period of time while sufficiently suppressing the decrease in the film formation rate of the first gas.
- the APC valve 283 may be adjusted to evacuate the reaction tube 210 with the vacuum pump 284. This increases the flow rate of the first gas, particularly the flow rate at the start of the supply, in other words, the flow rate in the above-mentioned entry region, and shortens the residence time ⁇ of the first gas in the processing chamber 201.
- the temperature in the process chamber 201 in this step may be set to be higher than the decomposition temperature of the first gas. This increases the reactivity of the first gas, thereby improving the film formation rate, and shortens the residence time of the first gas in the process chamber 201, thereby preventing the decomposition rate of the first gas from becoming too high.
- This step may be performed so that at least some of the adsorption sites on the surface of the substrate S become first element sites to which a first element-containing substance, which is a substance containing a first element contained in the first gas, is chemically adsorbed.
- the first element may be, for example, silicon (Si) or germanium (Ge), which are group 14 elements, or aluminum (Al), gallium (Ga), or indium (In), which are group 13 elements.
- a transition metal element may be the first element.
- transition metal element examples include titanium (Ti), zirconium (Zr), and hafnium (Hf), which are group 4 elements, niobium (Nb) and tantalum (Ta), which are group 5 elements, molybdenum (Mo) and tungsten (W), which are group 6 elements, manganese (Mn), which is group 7 elements, ruthenium (Ru), which is group 8 elements, cobalt (Co), which is group 9 elements, and nickel (Ni), which is group 10 elements.
- a Si-containing gas containing Si as a first element can be used.
- a gas containing Si and chlorine (Cl) can be used.
- a source gas containing Si-Si bonds such as HCDS gas shown in FIG. 10A, can be used.
- HCDS gas contains Si and a chloro group (chloride) in its chemical structural formula (in one molecule).
- TCDMDS 1,1,2,2-tetrachloro-1,2-dimethyldisilane
- DCTMDS 1,2-dichloro-1,1,2,2-tetramethyldisilane
- TCDMDS has a Si-Si bond and further includes a chloro group and an alkylene group as shown in Fig. 10B.
- DCTMDS has a Si-Si bond and further includes a chloro group and an alkylene group as shown in Fig. 10C.
- One or more of these can be used as the first gas.
- the inert gas for example, N2 gas or a rare gas such as Ar gas, He gas, neon (Ne) gas, or xenon (Xe) gas can be used.
- a rare gas such as Ar gas, He gas, neon (Ne) gas, or xenon (Xe) gas
- Ar gas a rare gas
- He gas a rare gas
- Ne neon
- Xe xenon
- the inert gas one or more of these can be used. This also applies to each step described later.
- HCDS gas is used as the first gas
- SiCl4 and SiCl2 which have higher reactivity than HCDS gas, are generated. That is, HCDS gas is decomposed as shown below.
- At least some of the adsorption sites on the surface of the substrate S become Si sites where Si-containing substances, that is, Si-containing substances, are chemically adsorbed, but reaction by-products such as HCl are adsorbed to the adsorption sites on the substrate S and inhibit the adsorption of the Si-containing substances.
- this step by flushing the first gas, a large amount of the first gas is supplied to the substrate S in a short time after the start of the supply, so that the adsorption sites on the substrate S for reaction by-products such as HCl can be reduced and the amount of adsorption of the Si-containing substances can be increased. This makes it possible to improve the step coverage performance while improving the film formation rate.
- Step S2 a purge gas is supplied to the process chamber 201 in which the substrate S is placed. That is, after the flush supply of the first gas in step S1, Si-containing substances that have not been adsorbed on the adsorption sites and reaction by-products that have been re-adsorbed on the surface of the substrate S are desorbed and removed from the reaction tube 210.
- valve 254 With valve 254 open, valve 275 is closed, and valves 258, 268, and 264 are opened to supply an inert gas as a purge gas into gas supply pipes 251 and 261 via gas supply pipes 255 and 265, while valve 282 and APC valve 283 of exhaust pipe 281 are left open and the reaction tube 210 is evacuated to a vacuum by vacuum pump 284.
- a second gas that reacts with the first gas is supplied to the processing chamber 201 in which the substrate S is placed.
- the second gas is stored in advance in a tank 269 provided in the gas supply pipe 261.
- a valve 264 provided downstream of the tank 269 between the tank 269 and the nozzle 224 is opened, and the second gas is supplied from the tank 269 in which the second gas is stored in advance into the gas supply pipe 261.
- the valve 264 is closed to stop the supply of the second gas into the gas supply pipe 261.
- the second gas is supplied in a large amount from the gas supply structure 212 through the upstream rectifier 214 into the reaction tube 210 in a short time, and then is exposed and exhausted through the space above the substrate S, the downstream rectifier 215, the gas exhaust structure 213, and the exhaust pipe 281.
- the valve 282 and the APC valve 283 are in an open state.
- the valve 276 may be in an open state or a closed state.
- the valve 268 may be opened to allow an inert gas such as N 2 gas to flow into the gas supply pipe 261 through the gas supply pipe 265.
- valves 258 and 254 may be opened to allow an inert gas to flow into the gas supply pipe 251.
- a large amount of the second gas is supplied at once from the side of the substrate S in a horizontal direction to the substrate S through the gas supply structure 212 that is in communication with the inside of the reaction tube 210.
- the temperature inside the processing chamber 201 at this time may be set to be higher than the decomposition temperature of the second gas.
- the decomposition rate X of the second gas may be controlled by setting the residence time ⁇ of the second gas based on a predetermined relationship between the decomposition rate X of the second gas in the processing chamber 201 and the residence time ⁇ of the second gas in the processing chamber 201.
- a gas containing a second element different from the first gas may be used.
- the second element is, for example, any one of N, oxygen (O), and carbon (C).
- a hydrogen (H) and N-containing gas can be used.
- H and N-containing gas for example, a hydrogen nitride gas containing an N-H bond, such as ammonia (NH 3 ) gas, diazene (N 2 H 2 ) gas, hydrazine (N 2 H 4 ) gas, or N 3 H 8 gas, can be used.
- NH 3 ammonia
- N 2 H 2 diazene
- N 2 H 4 hydrazine
- N 3 H 8 gas a hydrogen nitride gas containing an N-H bond
- Step S4 a purge gas is supplied to the process chamber 201 in which the substrate S is placed, by the same process procedure as in step S2. That is, after the flush supply of the second gas in step S3, the second gas that has not been adsorbed to the adsorption sites and the reaction by-products that have been generated by reaction with the second gas and re-adsorbed on the surface of the substrate S are desorbed and removed from the reaction tube 210.
- valve 276 is closed, and valves 268, 258, and 254 are opened to supply an inert gas as a purge gas into gas supply pipes 251 and 261 via gas supply pipes 255 and 265, while valve 282 and APC valve 283 of exhaust pipe 281 are left open and the reaction tube 210 is evacuated to a vacuum by vacuum pump 284. This makes it possible to suppress the reaction between the first gas and the second gas in the gas phase present in reaction tube 210.
- a cycle of sequentially and non-simultaneously performing the above-mentioned first gas supply step and second gas supply step is performed a predetermined number of times (n times, n is an integer of 1 or more), to form a film of a predetermined thickness on the substrate S having a recess.
- n times, n is an integer of 1 or more
- a SiN film is formed.
- a film with improved step coverage performance and improved film formation rate can be formed on the substrate S having a recess.
- judgment S112 it is judged whether or not the substrate has been processed the predetermined number of times. If it is judged that the substrate has not been processed the predetermined number of times, the process returns to the substrate carry-in step S104, and the next substrate S is processed. If it is judged that the substrate has been processed the predetermined number of times, the process ends.
- the gas flow is described as horizontal in the above, it is sufficient that the main gas flow is formed in a horizontal direction overall, and the gas flow may be diffused vertically as long as it does not affect the uniform processing of multiple substrates.
- the first gas supply system 250 is described as being provided with the tank 259, but the embodiment is not limited to this. In other words, the first gas supply system 250 may not be provided with the tank 259, and the first gas may be supplied by a method other than flush supply. Even in this case, the same effect as the above embodiment can be obtained.
- the tank 269 has been described, but this embodiment is not limited to this.
- the second gas supply system 260 may not include the tank 269, and the second gas may be supplied by a method other than flush supply. Even in this case, the same effect as the above-mentioned embodiment can be obtained.
- a film is formed on the substrate S using a first gas and a second gas in the film formation process performed by the substrate processing apparatus, but the embodiment is not limited to this.
- other types of thin films may be formed using other types of gas as the processing gas used in the film formation process.
- the embodiment can be applied even when three or more types of processing gas are used.
- a film formation process is given as an example of a process performed by the substrate processing apparatus, but the present embodiment is not limited to this.
- the present embodiment can be applied to film formation processes other than the film formation processes given as examples in the above-mentioned embodiment.
- an example of forming a film using a batch-type substrate processing apparatus that processes multiple substrates at a time has been described.
- the present disclosure is not limited to the above-mentioned embodiment, and can be suitably applied, for example, to a case where a film is formed using a single-wafer substrate processing apparatus that processes one or several substrates at a time.
- an example of forming a film using a substrate processing apparatus having a hot-wall type processing furnace has been described.
- the present disclosure is not limited to the above-mentioned embodiment, and can be suitably applied, for example, to a case where a film is formed using a substrate processing apparatus having a cold-wall type processing furnace.
- each process can be performed using the same process procedures and conditions as the above-mentioned embodiments and modifications, and the same effects as the above-mentioned embodiments and modifications can be obtained.
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Abstract
Description
(a)処理空間内に供給される処理ガスの分解率と滞在時間との所定の関係に基づいて前記分解率を制御することで、前記処理空間内に配される基板を処理する技術が提供される。
基板処理装置10の構成について、図1を用いて説明する。
基板支持部は、少なくとも基板Sを支持する基板支持具300で構成され、反応管210内に格納される。反応管210の天板内壁直下に基板Sが配置される。また、基板支持部は、移載室217の内部で図示しない基板搬入口を介して真空搬送ロボットにより基板Sの移し替えを行ったり、移し替えた基板Sを反応管210の内部に搬送して基板Sの表面に薄膜を形成する処理を行ったりする。基板搬入口は、例えば移載室217の側壁に設けられる。なお、基板支持部に、仕切板支持部310を含めて考えても良い。
図3(A)に記載のように、ガス供給管251には、上流方向から順に、第一ガス源252、流量制御器(流量制御部)であるマスフローコントローラ(MFC)253、開閉弁であるバルブ275、ガスを貯留する貯留部であるタンク259及び開閉弁であるバルブ254が設けられている。
反応管210の雰囲気を排気する排気系280は、反応管210と連通する排気管281を有し、排気管接続部242を介して筐体241に接続される。
移載室圧力調整工程S102を説明する。ここでは、移載室217内の圧力を移載室217に隣接する図示しない真空搬送室と同レベルの圧力とする。具体的には、排気系290を作動させ、移載室217の雰囲気が真空レベルとなるよう、移載室217の雰囲気を排気する。
続いて基板搬入工程S104を説明する。
移載室217が真空レベルとなったら、基板Sの搬送を開始する。基板Sが真空搬送室に到着したらゲートバルブを解放し、真空搬送ロボットは基板Sを移載室217に搬入する。
続いて加熱工程S106を説明する。反応管210内に基板Sを搬入したら、反応管210内を所定の圧力となるように制御するとともに、基板Sの表面温度が所定の温度となるように制御する。第一ガスとして、例えばHCDSガスを用いる場合、ヒータ211の温度は、基板Sの温度が、例えば100℃~1500℃であり、好ましくは200℃~1000℃であって、さらに好ましくは400℃~800℃となるよう制御する。また、反応管210内の圧力は、例えば5Pa~100kPaとすることが考えられる。
続いて膜処理工程S108について説明する。膜処理工程S108では、プロセスレシピに応じて、基板Sの凹部に対して、後述する第一ガスを基板Sにフラッシュ供給する第一ガス供給工程と、第二ガスを基板Sにフラッシュ供給する第二ガス供給工程と、を1回以上行って、表面に凹部を有する基板S上に所定の膜を形成する。
本ステップでは、内部に基板Sが配される処理室201に対して、第一ガスをフラッシュ供給する。ここで、フラッシュ供給とは、短時間で大流量のガスを反応管210内に供給することをいう。
本ステップでは、内部に基板Sが配される処理室201に対して、パージガスを供給する。すなわち、ステップS1の第一ガスのフラッシュ供給後に、吸着サイトに吸着されなかったSi含有物や、基板S表面に再吸着した反応副生成物を脱離し、反応管210内から除去する。
次に、内部に基板Sが配される処理室201に対して、第一ガスと反応する第二ガスを供給する。具体的には、本ステップでは、ガス供給管261に設けられたタンク269に予め第二ガスを溜めておく。そして、第二ガスを供給する際に、タンク269とノズル224の間の、タンク269の下流側に設けられたバルブ264を開き、予め第二ガスが貯留されたタンク269から、ガス供給管261内に第二ガスを供給する。そして、第二ガスの供給を開始してから所定時間経過後にバルブ264を閉じてガス供給管261内への第二ガスの供給を停止する。
本ステップでは、内部に基板Sが配される処理室201に対して、ステップS2と同様の処理手順によりパージガスを供給する。すなわち、ステップS3の第二ガスのフラッシュ供給後に、吸着サイトに吸着されなかった第二ガスや、第二ガスとの反応により生成され、基板S表面に再吸着した反応副生成物を脱離し、反応管210内から除去する。
上述した第一ガス供給工程と、第二ガス供給工程と、を順に非同時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、凹部を有する基板S上に、所定の厚さの膜を形成する。例えば、第一ガスとしてHCDSガスを、第二ガスとしてH及びN含有ガスを用いる場合、SiN膜が形成される。これにより、凹部を有する基板S上に、ステップカバレッジ性能が改善され、成膜レートが向上された膜を形成することができる。
続いて基板搬出工程S110を説明する。S110では、上述した基板搬入工程S104と逆の手順にて、処理済みの基板Sを移載室217の外へ搬出する。
続いて判定S112を説明する。ここでは所定回数基板を処理したか否かを判定する。所定回数処理していないと判断されたら、基板搬入工程S104に戻り、次の基板Sを処理する。所定回数処理したと判断されたら、処理を終了する。
以上に、本態様の実施形態を具体的に説明したが、それ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。
201 処理室
Claims (19)
- (a)処理空間内に供給される処理ガスの分解率と滞在時間との所定の関係に基づいて前記分解率を制御することで、前記処理空間内に配される基板を処理する工程、
を有する基板処理方法。 - (a)では、
(a1)前記分解率の値を第1範囲内で制御する工程と、
(a2)前記分解率の値を、前記第1範囲と少なくとも一部が異なる第2範囲内で制御する工程と、
を行う、請求項1に記載の基板処理方法。 - (a)では、
前記滞在時間の値を、前記分解率の値が第1分解率になる第1時間以下の範囲内にすることで、前記分解率の値を前記第1分解率以下の範囲内で制御する、
請求項1に記載の基板処理方法。 - (a)では、
(a1)前記滞在時間の値を、前記分解率の値が第1分解率になる第1時間以下の範囲内にすることで、前記分解率の値を前記第1分解率以下の範囲内で制御する工程と、
(a2)前記滞在時間の値を、前記分解率の値が前記第1分解率より高い第2分解率になり、前記第1時間より長い第2時間以下の範囲内にすることで、前記分解率の値を前記第2分解率以下の範囲内で制御する工程と、
を行う、請求項1に記載の基板処理方法。 - (a)では、前記処理空間内における前記処理ガスの流速を制御することで前記滞在時間を制御する、請求項1に記載の基板処理方法。
- (a)では、前記処理空間への前記処理ガスの供給を開始する前に、前記処理空間を排気する、請求項1から5のいずれか一項に記載の基板処理方法。
- (a)では、前記処理空間に前記処理ガスを供給する間、前記処理空間を排気する、請求項1から5のいずれか一項に記載の基板処理方法。
- (a)の少なくとも一部において、単位時間あたりに前記処理空間から排気されるガスの体積を、前記処理空間の容積の50~4000倍にする、請求項7に記載の基板処理方法。
- (a)では、前記処理ガスの供給量を、前記処理ガスの供給開始時に最大とする、請求項1から5のいずれか一項に記載の基板処理方法。
- (a)では、昇圧された前記処理ガスを前記処理空間に供給する、請求項1から5のいずれか一項に記載の基板処理方法。
- (a)の少なくとも一部おいて、単位時間あたりに前記処理空間へと供給される前記処理ガスの体積を、前記処理空間の容積の0.0005~6倍にする、請求項1から5のいずれか一項に記載の基板処理方法。
- (a)では、前記処理ガスを、前記処理ガスよりも分子量が小さい低分子量ガスと混合して前記処理空間に供給する、請求項1から5のいずれか一項に記載の基板処理方法。
- (a)では、前記処理空間内の温度は、前記処理ガスの分解温度よりも高い、請求項1から5のいずれか一項に記載の基板処理方法。
- 前記処理ガスは第一元素を含み、
(a)では、前記基板表面の吸着サイトの少なくとも一部は、前記第一元素を含む物質である第一元素含有物が化学吸着した第一元素サイトとなる、
請求項1から5のいずれか一項に記載の基板処理方法。 - 前記処理ガスは、ヘキサクロロジシランガスである、請求項1から5のいずれか一項に記載の基板処理方法。
- (b)前記処理空間に、前記処理ガスと反応する反応ガスを供給する工程をさらに有する、請求項1から5のいずれか一項に記載の基板処理方法。
- (a)処理空間内に供給される処理ガスの分解率と滞在時間との所定の関係に基づいて前記分解率を制御することで、前記処理空間内に配される基板を処理する工程、
を有する半導体装置の製造方法。 - 内部に基板が配される処理空間と、
前記処理空間に処理ガスを供給する処理ガス供給系と、
前記処理ガス供給系を制御可能であり、前記処理空間内の前記処理ガスの分解率と滞在時間との所定の関係に基づいて前記分解率を制御することが可能なように構成される制御部と、
を有する基板処理装置。 - (a)処理空間内に供給される処理ガスの分解率と滞在時間との所定の関係に基づいて前記分解率を制御することで、前記処理空間内に配される基板を処理する手順、
を有する手順をコンピュータによって基板処理装置に実行させるプログラム。
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| PCT/JP2023/001225 WO2024154233A1 (ja) | 2023-01-17 | 2023-01-17 | 基板処理方法、半導体装置の製造方法、基板処理装置及びプログラム |
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| CN202380085845.2A CN120359594A (zh) | 2023-01-17 | 2023-01-17 | 基板处理方法、半导体装置的制造方法、基板处理装置以及程序 |
| TW112148035A TWI899739B (zh) | 2023-01-17 | 2023-12-11 | 基板處理方法、半導體裝置之製造方法、基板處理裝置及程式 |
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| JPS63223178A (ja) * | 1987-03-11 | 1988-09-16 | Konica Corp | アモルフアスシリコン系膜の製造方法 |
| JP2022118628A (ja) * | 2021-02-02 | 2022-08-15 | 東京エレクトロン株式会社 | 処理装置及び処理方法 |
| WO2022196339A1 (ja) * | 2021-03-17 | 2022-09-22 | 株式会社Kokusai Electric | 半導体装置の製造方法、基板処理装置及びプログラム |
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| US10593572B2 (en) * | 2018-03-15 | 2020-03-17 | Kokusai Electric Corporation | Substrate processing apparatus and method of manufacturing semiconductor device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63223178A (ja) * | 1987-03-11 | 1988-09-16 | Konica Corp | アモルフアスシリコン系膜の製造方法 |
| JP2022118628A (ja) * | 2021-02-02 | 2022-08-15 | 東京エレクトロン株式会社 | 処理装置及び処理方法 |
| WO2022196339A1 (ja) * | 2021-03-17 | 2022-09-22 | 株式会社Kokusai Electric | 半導体装置の製造方法、基板処理装置及びプログラム |
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| KR20250137581A (ko) | 2025-09-18 |
| JPWO2024154233A1 (ja) | 2024-07-25 |
| TW202445659A (zh) | 2024-11-16 |
| CN120359594A (zh) | 2025-07-22 |
| TWI899739B (zh) | 2025-10-01 |
| US20250340993A1 (en) | 2025-11-06 |
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