WO2021024385A1 - 基板処理装置、基板支持具、半導体装置の製造方法およびプログラム - Google Patents
基板処理装置、基板支持具、半導体装置の製造方法およびプログラム Download PDFInfo
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- WO2021024385A1 WO2021024385A1 PCT/JP2019/030919 JP2019030919W WO2021024385A1 WO 2021024385 A1 WO2021024385 A1 WO 2021024385A1 JP 2019030919 W JP2019030919 W JP 2019030919W WO 2021024385 A1 WO2021024385 A1 WO 2021024385A1
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- 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
- C23C16/458—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 supporting substrates in the reaction chamber
- C23C16/4582—Rigid and flat substrates, e.g. plates or discs
- C23C16/4583—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally
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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
- C23C16/458—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 supporting substrates in the reaction chamber
- C23C16/4582—Rigid and flat substrates, e.g. plates or discs
- C23C16/4587—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially vertically
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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
- C23C16/46—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 heating the substrate
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/02164—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material being a silicon oxide, e.g. SiO2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02205—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition
- H01L21/02208—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si
- H01L21/02211—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound being a silane, e.g. disilane, methylsilane or chlorosilane
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H01L21/0228—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition deposition by cyclic CVD, e.g. ALD, ALE, pulsed CVD
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67103—Apparatus for thermal treatment mainly by conduction
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67115—Apparatus for thermal treatment mainly by radiation
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/673—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere using specially adapted carriers or holders; Fixing the workpieces on such carriers or holders
- H01L21/67303—Vertical boat type carrier whereby the substrates are horizontally supported, e.g. comprising rod-shaped elements
- H01L21/67306—Vertical boat type carrier whereby the substrates are horizontally supported, e.g. comprising rod-shaped elements characterized by a material, a roughness, a coating or the like
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/02126—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material 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
Definitions
- the present disclosure relates to a manufacturing method and a program of a substrate processing apparatus, a substrate support, and a semiconductor apparatus.
- a substrate processing device used in the manufacturing process of a semiconductor device for example, there is a so-called vertical device in which a load lock chamber (lower chamber) is installed below a process tube (reaction tube).
- a substrate processing apparatus raises and lowers a boat (board support) that supports the substrate between the process tube and the load lock chamber, and performs predetermined processing on the substrate while the boat is housed in the process tube.
- the present disclosure is to provide a technique capable of improving the uniformity of the in-plane temperature distribution of a substrate in the substrate processing.
- a processing room where processing is performed on the substrate, and A substrate support for supporting the substrate in the processing chamber is provided.
- the substrate support is provided with a technique relating to a substrate processing apparatus in which plate-shaped members having different thicknesses in a central portion and an outer peripheral portion located outside the central portion are arranged along the substrate. ..
- FIG. 1 It is a schematic block diagram of the substrate processing apparatus preferably used in one aspect of this disclosure, and is the figure (the 1) which shows the processing furnace part in the vertical sectional view. It is a schematic block diagram of the substrate processing apparatus preferably used in one aspect of this disclosure, and is the figure (2) which shows the processing furnace part in the vertical sectional view.
- (A) is an enlarged view showing an example of a main part configuration of a substrate processing apparatus preferably used in one aspect of the present disclosure, and (b) and (c) are respectively preferably suitable in one aspect of the present disclosure. It is an enlarged view which shows the modification of the main part composition of the substrate processing apparatus used.
- the substrate processing device is used in the manufacturing process of a semiconductor device, and is a vertical type in which a plurality of substrates (for example, 5) to be processed are collectively processed. It is configured as a board processing device.
- the substrate to be processed include a semiconductor wafer substrate (hereinafter, simply referred to as “wafer”) in which a semiconductor integrated circuit device (semiconductor device) is built.
- the substrate processing apparatus includes a vertical processing furnace 1.
- the vertical processing furnace 1 has a heater 10 as a heating unit (heating mechanism, heating system).
- the heater 10 has a cylindrical shape and is supported by a heater base (not shown) as a holding plate so that the heater 10 is installed perpendicularly to the installation floor of the substrate processing apparatus.
- the heater 10 also functions as an activation mechanism (excitation portion) for activating (exciting) the gas with heat.
- the reaction tube 20 constituting a reaction vessel (processing vessel) is arranged concentrically with the heater 10.
- the reaction tube 20 has a double tube configuration including an inner tube (inner tube) 21 and an outer tube (outer tube) 22 that concentrically surrounds the inner tube 21.
- the inner tube 21 and the outer tube 22 are each made of a heat-resistant material such as quartz (SiO 2 ) or silicon carbide (SiC).
- the inner pipe 21 is formed in a cylindrical shape with the upper end and the lower end open.
- the outer pipe 22 is formed in a cylindrical shape with the upper end closed and the lower end open. The upper end of the inner pipe 21 extends to the vicinity of the ceiling of the outer pipe 22.
- a processing chamber 23 for processing the wafer 200 is formed in the hollow portion of the inner tube 21.
- the processing chamber 23 is configured so that the wafers 200 can be accommodated in a state of being arranged in the processing chamber 23 from one end side (lower side) to the other end side (upper side).
- the region in which a plurality of wafers 200 are arranged in the processing chamber 23 is also referred to as a substrate arrangement region (wafer arrangement region).
- the direction in which the wafers 200 are arranged in the processing chamber 23 is also referred to as a substrate arrangement direction (wafer arrangement direction).
- a lower chamber (load lock chamber) 30 is arranged below the outer tube 22 (reaction tube 20).
- the lower chamber 30 is made of a metal material such as stainless steel (SUS), has an inner diameter substantially the same as the inner diameter of the inner pipe 21, and has a cylindrical shape (open bottomed cylindrical shape) with an upper end open and a lower end closed. It is formed.
- the lower chamber 30 is arranged so as to communicate with the inner pipe 21.
- a flange 31 is provided at the upper end of the lower chamber 30.
- the flange 31 is made of a metal material such as SUS.
- the upper end of the flange 31 is engaged with the lower ends of the inner tube 21 and the outer tube 22, respectively, and is configured to support the inner tube 21 and the outer tube 22, that is, the reaction tube 20.
- the inner pipe 21 and the outer pipe 22 are installed vertically like the heater 10.
- a transfer chamber (load lock chamber) 33 that functions as a transfer space for transferring the wafer 200 is formed in the hollow portion (closed space) of
- a nozzle 24 as a gas supply unit is provided so as to penetrate the inner pipe 21 and the outer pipe 22.
- the nozzle 24 is made of a heat-resistant material such as quartz or SiC, and is formed as an L-shaped long nozzle.
- a gas supply pipe 51 is connected to the nozzle 24.
- Two gas supply pipes 52 and 54 are connected to the gas supply pipe 51, and are configured to be able to supply a plurality of types, here two types of gas, into the processing chamber 23.
- the gas supply pipes 51, 52, 54 and the gas supply pipes 53, 55, 56, which will be described later, are each made of a metal material such as SUS.
- the gas supply pipe 52 is provided with a mass flow controller (MFC) 52a which is a flow rate controller (flow rate control unit) and a valve 52b which is an on-off valve in order from the upstream side of the gas flow.
- MFC mass flow controller
- a gas supply pipe 53 is connected to the downstream side of the gas supply pipe 52 with respect to the valve 52b.
- the gas supply pipe 53 is provided with an MFC 53a and a valve 53b in this order from the upstream side of the gas flow.
- the gas supply pipe 54 is provided with an MFC 54a and a valve 54b in order from the upstream side of the gas flow.
- a gas supply pipe 55 is connected to the downstream side of the gas supply pipe 54 with respect to the valve 54b.
- the gas supply pipe 55 is provided with an MFC 55a and a valve 55b in this order from the upstream side of the gas flow.
- a gas supply pipe 56 is connected below the side wall of the lower chamber 30.
- the gas supply pipe 56 is provided with an MFC 56a and a valve 56b in this order from the upstream side of the gas flow.
- the nozzle 24 connected to the tip of the gas supply pipe 51 extends into the space between the inner wall of the inner pipe 21 and the wafer 200 along the inner wall of the inner pipe 21 from the lower region to the upper region of the processing chamber 23. It is provided so as to exist (so that it rises upward in the arrangement direction of the wafer 200). That is, the nozzle 24 is provided along the wafer arrangement region in the region horizontally surrounding the wafer arrangement region on the side of the wafer arrangement region in which the wafer 200 is arranged.
- a gas supply hole 24a for supplying gas is provided on the side surface of the nozzle 24. The gas supply hole 24a is opened so as to face the center of the reaction tube 20, so that gas can be supplied toward the wafer 200.
- a plurality of gas supply holes 24a are provided from the lower part to the upper part of the reaction tube 20 (nozzle 24) at positions facing the wafer 200 supported by the boat 41.
- a raw material gas which is a first processing gas (first film-forming gas, first metal-containing gas), a main element (a main element) constituting a film formed on the wafer 200. It is possible to supply a halosilane gas containing silicon (Si) as a predetermined element) and a halogen element into the processing chamber 23 via the MFC 52a, the valve 52b, the gas supply pipe 51, and the nozzle 24.
- the raw material gas is a raw material in a gaseous state, for example, a gas obtained by vaporizing a raw material in a liquid state under normal temperature and pressure, a raw material in a gaseous state under normal temperature and pressure, and the like.
- the halosilane-based gas is a silane-based gas having a halogen group.
- Halogen groups include halogen elements such as chlorine (Cl), fluorine (F), bromine (Br) and iodine (I).
- a raw material gas containing Si and Cl that is, a chlorosilane-based gas can be used.
- the chlorosilane gas acts as a Si source.
- hexachlorodisilane (Si 2 Cl 6 , abbreviation: HCDS) gas can be used as the chlorosilane-based gas.
- an oxygen (O) -containing gas is used as the reaction gas (reactant) which is the second processing gas (second film-forming gas), and the MFC 54a, the valve 54b, the gas supply pipe 51, and the nozzle 24 are connected. It is possible to supply the gas into the processing chamber 23 via the device.
- the O-containing gas acts as an O source (oxidizing gas, oxidizing agent).
- oxygen (O 2 ) gas can be used as the O-containing gas.
- nitrogen (N 2 ) gas as an inert gas is introduced into the processing chamber 23 via the MFC 53a, 55a, the valves 53b, 55b, the gas supply pipes 51, 52, 54, and the nozzle 24, respectively. It is possible to supply inward.
- the N 2 gas acts as a purge gas, a diluent gas, or a carrier gas.
- N 2 gas as the inert gas, MFC56a
- MFC56a the inert gas
- the gas supply pipe 52, the MFC 52a, and the valve 52b form a first processing gas supply system (first processing gas supply unit).
- the gas supply pipe 51 and the nozzle 24 may be included in the first processing gas supply system.
- the second processing gas supply system (second processing gas supply unit) is mainly composed of the gas supply pipe 54, the MFC 54a, and the valve 54b.
- the gas supply pipe 51 and the nozzle 24 may be included in the second processing gas supply system.
- the gas supply pipes 53, 55, MFC 53a, 55a, and valves 53b, 55b form a first inert gas supply system (first inert gas supply unit).
- the gas supply pipes 51, 52, 54 and the nozzle 24 may be included in the first inert gas supply system.
- the gas supply pipe 56, the MFC 56a, and the valve 56b form a second inert gas supply system (second inert gas supply unit).
- a pumping portion 26 as an exhaust buffer which is a gas retention space, is formed so as to surround the outer pipe 22.
- the pumping portion 26 is arranged below the heater 10 provided so as to surround the outer pipe 22.
- the pumping portion 26 communicates with the exhaust flow path 25, which is an annular space between the inner pipe 21 and the outer pipe 22, and is configured to temporarily retain the gas flowing through the exhaust flow path 25. ing.
- an opening 27 for discharging gas from the inside of the inner pipe 21 and the transfer chamber 33 to the pumping portion 26 is provided below the inner pipe 21 below the inner pipe 21, an opening 27 for discharging gas from the inside of the inner pipe 21 and the transfer chamber 33 to the pumping portion 26 is provided.
- a plurality of openings 27 are provided along the circumferential direction of the inner pipe 21 at positions facing the pumping portion 26 and as close as possible to the lower chamber 30.
- An exhaust pipe 61 for exhausting the gas staying in the pumping unit 26 is connected to the pumping unit 26.
- the exhaust pipe 61 is provided via a pressure sensor 62 as a pressure detector (pressure detection unit) for detecting the pressure in the processing chamber 23 and an APC (Auto Pressure Controller) valve 63 as a pressure regulator (pressure regulator).
- a vacuum pump 64 as a vacuum exhaust device is connected.
- the APC valve 63 can perform vacuum exhaust and vacuum exhaust stop in the processing chamber 23 by opening and closing the valve while the vacuum pump 64 is operated, and further, when the vacuum pump 64 is operated, the APC valve 63 can perform vacuum exhaust and vacuum exhaust stop. By adjusting the valve opening degree based on the pressure information detected by the pressure sensor 62, the pressure in the processing chamber 23 can be adjusted.
- the exhaust system that is, the exhaust line is mainly composed of the exhaust pipe 61, the APC valve 63, and the pressure sensor 62.
- the exhaust flow path 25, the pumping portion 26, and the vacuum pump 64 may be included in the exhaust system.
- a substrate loading / unloading outlet 32 is provided above the side wall of the lower chamber 30.
- the wafer 200 is moved inside and outside the transfer chamber 33 by a transfer robot (not shown) via the substrate carry-in / carry-out port 32.
- the wafer 200 is loaded into the boat 41, which will be described later, and the wafer 200 is removed from the boat 41.
- the boat 41 as a substrate support supports a plurality of (for example, five) wafers 200 in a horizontal position and in a state of being centered on each other by vertically aligning them, that is, supporting them in multiple stages. It is configured to be arranged at intervals.
- the boat 41 is made of a heat resistant material such as quartz or SiC.
- a heat insulating portion 42 in which a heat insulating plate made of a heat-resistant material such as quartz or SiC is supported in a horizontal posture in multiple stages is arranged.
- the heat insulating portion 42 may be formed of a heat insulating cylinder made of a heat-resistant material such as quartz or SiC.
- a plurality of plate-shaped members (separators, hereinafter also referred to as plates) 46 are arranged in multiple stages along the wafer 200 at a position between adjacent wafers 200 of the boat 41 and a position below the wafer 200 arranged at the bottom. ing.
- Each of the plurality of plates 46 is arranged on the boat 41 so as not to come into contact with the wafer 200 when the wafer 200 is loaded on the boat 41. Further, when the plate 46 is arranged on the boat 41 and the wafer 200 is loaded on the boat 41, each surface of the plurality of plates 46 faces (faces) the back surface of the wafer 200 and faces the back surface of the wafer 200. It is parallel.
- the "front surface of the wafer 200" means the surface to be processed of the wafer 200
- the “back surface of the wafer 200” means the surface opposite to the surface to be processed of the wafer 200.
- the “front surface of the plate 46” in the present specification means a surface facing the back surface of the wafer 200
- the “back surface of the plate 46” means a surface opposite to the front surface of the plate 46.
- the heating of the wafer 200 is mainly performed.
- heat radiation from the heater 10 and secondary heat radiation from the plate 46 will be used. That is, the heat conduction from the plate 46 is not used for heating the wafer 200.
- the heat capacity of the space between the back surface of the wafer 200 and the front surface of the plate 46 can be made uniform in the back surface of the wafer 200.
- the wafer 200 can be heated uniformly in-plane, and the uniformity of the in-plane temperature distribution (in-plane temperature of the wafer) of the wafer 200 in the film forming process described later can be improved.
- the plate 46 is arranged on the boat 41 so that the space (volume) facing the front surface of the wafer 200 is larger than the space (volume) facing the back surface of the wafer 200. That is, the plate 46 is boated so that the distance between the front surface of the plate 46 and the back surface of the wafer 200 located directly above the plate 46 is shorter than the distance between the back surface of the plate 46 and the front surface of the wafer 200 located immediately below. It is arranged in 41.
- the “space facing the surface of the wafer 200” in the present specification means a space on the surface of the wafer 200, that is, a space through which the gas formed on the surface side of the wafer 200 flows.
- the "space facing the back surface of the wafer 200" is formed on the back surface of the wafer 200 (the space between the back surface of the wafer 200 and the front surface of the plate 46), that is, on the back surface side of the wafer 200. It means the space where the gas to flow flows.
- the amount of gas flowing in the space on the front surface of the wafer 200 becomes larger than the amount of gas flowing in the space on the back surface of the wafer 200, so that a decrease in the film forming rate in the film forming process described later can be suppressed. Is possible.
- by increasing the amount of gas flowing in the space on the surface of the wafer 200 it is possible to suppress the retention of gas on the surface of the wafer 200. This makes it possible to improve the in-plane uniformity of processing on the wafer 200.
- the plate 46 is formed in a circular shape in a plan view having a diameter larger than the diameter of the wafer 200, for example.
- the plate 46 is formed so as to have a different heat capacity in the radial direction according to the distance from the heater 10 in the processing chamber 23. That is, as shown in FIG. 3A, the plate 46 has a different thickness between the central portion and the outer peripheral portion located outside the central portion. This makes it possible to improve the uniformity of the in-plane temperature of the wafer in the film forming process described later.
- central portion (of the plate 46) means a portion of the plate 46 that is located radially inside the plate 46 and faces the wafer 200, and is “outer circumference (of the plate 46).”
- the “part” means a portion of the plate 46 that is located on the outer side in the radial direction of the plate 46 and that does not face the wafer 200.
- the thickness of the outer peripheral portion of the plate 46 is thicker than the thickness of the central portion, that is, the heat capacity of the outer peripheral portion of the plate 46 is larger than the heat capacity of the central portion.
- the outer peripheral portion of the wafer 200 has a shorter distance from the heater 10 in the processing chamber 23 than the central portion. Therefore, when the wafer 200 is heated in the film forming process, the outer peripheral portion of the wafer 200 absorbs more radiant heat from the heater 10 than the central portion and is easily heated. At this time, since the heat capacity of the outer peripheral portion of the plate 46 is larger than the heat capacity of the central portion, the outer peripheral portion of the plate 46 is less likely to be heated than the central portion. As a result, when the wafer 200 is heated in the film forming process, the heat radiation from the plate 46 can be reduced in the outer peripheral portion of the wafer 200, and the heat radiation from the plate 46 can be increased in the central portion of the wafer 200. As a result, it is possible to improve the uniformity of the in-plane temperature of the wafer during heating of the film forming process.
- the outer peripheral portion of the wafer 200 is more likely to be cooled than the central portion.
- the heat capacity of the outer peripheral portion of the plate 46 is larger than the heat capacity of the central portion, the outer peripheral portion of the plate 46 is less likely to be cooled than the central portion.
- the heat radiation from the plate 46 can be increased at the outer peripheral portion of the wafer 200, and the heat radiation from the plate 46 can be reduced at the central portion of the wafer 200.
- uniformity of the temperature inside the wafer surface of the film forming process when it means “uniformity of the temperature inside the wafer surface during heating”, it means “inside the wafer surface during cooling”. It may mean “temperature uniformity” or may include both.
- the thickness of the outer peripheral portion of the plate 46 should be thicker than the thickness of the central portion over the entire circumference in the circumferential direction. This makes it possible to reliably improve the uniformity of the in-plane temperature of the wafer in the film forming process.
- the thickness of the central portion of the plate 46 can be set to a predetermined thickness in the range of, for example, 2 to 7 mm, and the thickness of the outer peripheral portion can be set to a predetermined thickness in the range of, for example, 5 to 15 mm.
- the ratio of the heat radiation from the outer peripheral portion to the heat radiation from the central portion of the plate 46 can be set to an appropriate range. This makes it possible to improve the uniformity of the in-plane temperature of the wafer in the film forming process.
- the back surface of the outer peripheral portion of the plate 46 protrudes from the back surface of the central portion. That is, the outer peripheral portion of the plate 46 projects downward in the wafer arrangement direction (downward in the thickness direction of the plate 46) to form a convex portion.
- the convex portion on the back surface of the outer peripheral portion of the plate 46 and making the front surface of the plate 46 a flat surface (flat surface)
- the wafer 200 It is possible to suppress the obstruction of the gas flow on the back surface.
- the arm of the transfer robot is prevented from coming into contact with (being caught) by the convex portion of the plate 46.
- the surface of the plate 46 is a flat surface, the shortest distance between adjacent plates 46 is larger than that in the case where a convex portion is formed on the surface of the outer peripheral portion of the plate 46 and the back surface of the plate 46 is a flat surface. Clearance) can be increased. As a result, even if the arm of the transfer robot is deformed (bent) by supporting the wafer 200, for example, the arm is prevented from coming into contact with the plate 46 when the wafer 200 is loaded or unloaded. be able to.
- the convex portion may be continuously formed over the entire circumference of the outer peripheral portion of the plate 46. This makes it possible to reliably improve the uniformity of the in-plane temperature of the wafer in the film forming process. In addition, it is possible to reliably suppress the obstruction of the gas flow on the back surface of the wafer 200.
- the plate 46 is made of a heat-resistant material such as quartz or SiC and has a high thermal conductivity (a material having a high thermal conductivity). This makes it possible to increase the heating efficiency of the plate 46.
- the central portion and the outer peripheral portion of the plate 46 may be formed of different materials.
- the central portion of the plate 46 may be formed of a material that more easily absorbs heat (heat radiation) from the heater 10 than the material that forms the outer peripheral portion.
- the central portion of the plate 46 may be formed of, for example, SiC
- the outer peripheral portion of the plate 46 may be formed of, for example, quartz. This makes it possible to improve the uniformity of the in-plane temperature of the wafer in the film forming process described later.
- the surface of the plate 46 can be, for example, a surface that has been surface-treated so as to be close to (equal to) the surface area of the back surface of the wafer 200. That is, the surface surface of the plate 46 may have a surface state close to the surface area of the back surface of the wafer 200.
- a layer for increasing the surface area of the surface of the plate 46 for example, the surface area of the surface of the plate 46 becomes close to the surface area of the back surface of the wafer 200 on the surface of the plate 46 by silicon spraying or the like. There is a coating process that provides a layer.
- the above-mentioned surface treatment there is a roughening treatment such as sandblasting.
- a roughening treatment such as sandblasting.
- the boat 41 is supported by the rod 43.
- the rod 43 penetrates the bottom of the lower chamber 30 while maintaining the airtight state of the transfer chamber 33, and is further connected to the elevating / rotating mechanism (boat elevator) 44 outside below the lower chamber 30.
- the elevating / rotating mechanism 44 is configured to elevate and lower the boat 41 so that the wafer 200 supported by the boat 41 can be elevated and lowered vertically between the processing chamber 23 and the transfer chamber 33. That is, the elevating / rotating mechanism 44 is configured as a transport device (transport mechanism) for transporting the boat 41, that is, the wafer 200, between the processing chamber 23 and the transfer chamber 33.
- the elevating / rotating mechanism 44 when the elevating / rotating mechanism 44 performs the ascending operation, the boat 41 rises to the position (wafer processing position) in the processing chamber 23 shown in FIG. 1, and when the elevating / rotating mechanism 44 performs the descending operation, The boat 41 descends to a position (wafer transport position) in the transfer chamber 33 shown in FIG. Further, the elevating / rotating mechanism 44 is configured to rotate the wafer 200 by rotating the boat 41.
- a lid 47 that closes the lower part of the reaction tube 20 may be provided near the upper end of the rod 43 and below the heat insulating portion 42. By providing the lid 47 and closing the lower portion of the reaction tube 20, it is possible to prevent the raw material gas and the reaction gas existing in the reaction tube 20 from diffusing into the transfer chamber 33. In addition, the pressure inside the reaction tube 20 can be easily controlled, and the uniformity of processing on the wafer 200 can be improved.
- a temperature sensor 11 as a temperature detector is installed in the inner pipe 21. By adjusting the degree of energization of the heater 10 based on the temperature information detected by the temperature sensor 11, the temperature in the processing chamber 23 becomes a desired temperature distribution.
- the temperature sensor 11 is configured in an L shape like the nozzle 24, and is provided along the inner wall of the inner pipe 21.
- the controller 70 which is a control unit (control means), is configured as a computer including a CPU (Central Processing Unit) 71, a RAM (Random Access Memory) 72, a storage device 73, and an I / O port 74.
- the RAM 72, the storage device 73, and the I / O port 74 are configured so that data can be exchanged with the CPU 71 via the internal bus 75.
- An input / output device 82 and an external storage device 81 configured as, for example, a touch panel are connected to the controller 70.
- the storage device 73 is composed of, for example, a flash memory, an HDD (Hard Disk Drive), or the like.
- a control program for controlling the operation of the substrate processing device, a process recipe in which procedures and conditions of a method for manufacturing a semiconductor device to be described later are described, and the like are readablely stored.
- the process recipes are combined so that the controller 70 can execute each step (each step) in the method for manufacturing a semiconductor device described later and obtain a predetermined result, and functions as a program.
- process recipes, control programs, etc. are collectively referred to simply as programs.
- a process recipe is also simply referred to as a recipe.
- the RAM 72 is configured as a memory area (work area) in which programs, data, and the like read by the CPU 71 are temporarily held.
- the I / O port 74 is connected to the above-mentioned MFC 52a to 56a, valves 52b to 56b, pressure sensor 62, APC valve 63, vacuum pump 64, heater 10, temperature sensor 11, elevating / rotating mechanism 44, and the like.
- the CPU 71 is configured to read and execute a control program from the storage device 73, and read a recipe from the storage device 73 in response to an input of an operation command from the input / output device 82 or the like.
- the CPU 71 adjusts the flow rate of various gases by the MFCs 52a to 56a, opens and closes the valves 52b to 56b, opens and closes the APC valve 63, and adjusts the pressure by the APC valve 63 based on the pressure sensor 62 so as to follow the contents of the read recipe.
- It is configured to control the operation, the start and stop of the vacuum pump 64, the temperature adjustment operation of the heater 10 based on the temperature sensor 11, the elevating / lowering operation of the boat 41 by the elevating / rotating mechanism 44, the rotation and the rotation speed adjusting operation, and the like. ..
- the controller 70 can be configured by installing the above-mentioned program stored in the external storage device 81 on a computer.
- the external storage device 81 includes, for example, a magnetic tape, a magnetic disk such as an HDD, an optical disk such as a CD, a magneto-optical disk such as MO, and a semiconductor memory such as a USB memory.
- the storage device 73 and the external storage device 81 are configured as a computer-readable recording medium. Hereinafter, these are collectively referred to simply as a recording medium. When the term recording medium is used in the present specification, it may include only the storage device 73 alone, it may include only the external storage device 81 alone, or it may include both of them.
- the program may be provided to the computer by using a communication means such as the Internet or a dedicated line without using the external storage device 81.
- Substrate processing step As one step of the manufacturing process of the semiconductor device using the above-mentioned substrate processing apparatus, a substrate processing sequence for forming a silicon oxide (SiO) film as a metal film on a wafer 200 as a substrate, that is, An example of a membrane sequence will be described. In the following description, the operation of each part constituting the substrate processing apparatus is controlled by the controller 70.
- SiO silicon oxide
- the film formation sequence shown in FIG. 5 may be shown as follows for convenience. The same notation will be used in the following description of other aspects and the like.
- wafer When the word “wafer” is used in the present specification, it may mean the wafer itself or a laminate of a wafer and a predetermined layer or film formed on the surface thereof.
- wafer surface When the term “wafer surface” is used in the present specification, it may mean the surface of the wafer itself or the surface of a predetermined layer or the like formed on the wafer.
- a predetermined layer when it is described that "a predetermined layer is formed on a wafer”, it means that a predetermined layer is directly formed on the surface of the wafer itself, or a layer formed on the wafer or the like. It may mean forming a predetermined layer on top of it.
- the use of the term “wafer” in the present specification is also synonymous with the use of the term “wafer”.
- a plurality of (for example, five) wafers 200 are loaded (wafer charged) into a boat 41 in which a plurality of plates 46 are arranged in multiple stages. Specifically, in the transfer chamber 33, the wafer 200 is placed at a predetermined position on the boat 41 through the substrate loading / unloading outlet 32 in a state where the wafer 200 is placed on the boat 41 so as to face the substrate loading / unloading outlet 32. Place it. After loading one wafer 200 into the boat 41, the other wafer 200 is loaded into the other wafer mounting position of the boat 41 while moving the vertical position of the boat 41 by the elevating / rotating mechanism 44. This operation is repeated multiple times. Specifically, the wafer 200 is loaded while lowering the boat 41.
- plates 46 are arranged in multiple stages along the wafer 200 at a position between adjacent wafers 200 when a plurality of wafers 200 are loaded and at a position below the wafer 200 arranged at the bottom.
- a plurality of plates 46 are arranged in advance so as to be in the state of being formed. At this time, the wafer 200 loaded on the boat 41 is heated by the plate 46.
- the boat 41 supporting the plurality of wafers 200 is lifted (lifted) into the processing chamber 23 by the elevating / rotating mechanism 44. It is carried in (boat road).
- the height position of the gas supply hole 24a is slightly larger than the position between the back surface of the outer peripheral portion of the plate 46 and the front surface of the wafer 200 immediately below, and the front surface of the wafer 200 arranged at the uppermost portion, respectively.
- the height position of the boat 41 is adjusted so that it is located at a higher position. This makes it possible to reliably supply gas to the surface of each wafer 200.
- the inside of the processing chamber 23 is evacuated (decompressed exhaust) by the vacuum pump 64 so that the inside of the processing chamber 23, that is, the space where the wafer 200 exists has a desired pressure (vacuum degree).
- the pressure in the processing chamber 23 is measured by the pressure sensor 62, and the APC valve 63 is feedback-controlled based on the measured pressure information (pressure adjustment).
- the wafer 200 in the processing chamber 23 is heated by the heater 10 so as to have a desired processing temperature.
- the state of energization of the heater 10 is feedback-controlled based on the temperature information detected by the temperature sensor 11 so that the inside of the processing chamber 23 has a desired temperature distribution (temperature adjustment).
- the rotation of the wafer 200 by the elevating / rotating mechanism 44 is started.
- the operation of the vacuum pump 64, the heating and rotation of the wafer 200 are all continued until at least the processing on the wafer 200 is completed.
- HCDS gas supply step S141> In this step, HCDS gas is supplied to the wafer 200 in the processing chamber 23.
- valve 52b is opened to allow HCDS gas to flow through the gas supply pipe 52.
- the flow rate of the HCDS gas is adjusted by the MFC 52a, and the HCDS gas is supplied into the processing chamber 23 via the gas supply pipe 51 and the nozzle 24.
- the HCDS gas supplied into the processing chamber 23 rises in the processing chamber 23, flows out from the upper end opening of the inner pipe 21 to the exhaust flow path 25, flows down the exhaust flow path 25, and passes through the pumping portion 26 to the exhaust pipe. It is exhausted from 61.
- HCDS gas is supplied to the wafer 200.
- opening valve 53b, the 55b, the gas supply pipe 51, 53 and 55 flow the N 2 gas through the nozzle 24 into the processing chamber 23.
- the supply of N 2 gas may not be implemented.
- the processing conditions in this step are HCDS gas supply flow rate: 0.01 to 2 slm, preferably 0.1 to 1 slm N 2 Gas supply flow rate (for each gas supply pipe): 0 to 10 slm Each gas supply time: 0.1 to 120 seconds, preferably 0.1 to 60 seconds Treatment temperature: 250 to 900 ° C., preferably 400 to 700 ° C. Processing pressure: 1-2666 Pa, preferably 67-1333 Pa Is exemplified.
- the outermost surface of the wafer 200 contains Si containing Cl as the first layer, for example, having a thickness of less than one atomic layer to several atomic layers. Layers are formed. Si-containing layer containing Cl is on the surface of the wafer 200, chemical adsorption and physical adsorption of the HCDS, chemisorption of substances some of HCDS was decomposed (Si x Cl y), such as deposition of Si by thermal decomposition of HCDS Is formed by.
- Si-containing layer containing Cl may be an adsorption layer of HCDS and Si x Cl y (physical adsorption layer and chemical adsorption layer), or may be a deposited layer of Si containing Cl.
- the Si-containing layer containing Cl is also simply referred to as a Si-containing layer.
- N 2 gas into the transfer chamber 33 (purging of the transfer chamber 33). Specifically, by opening the valve 56b, flow the N 2 gas to the gas supply pipe 56. The flow rate of the N 2 gas is adjusted by the MFC 56a and supplied into the transfer chamber 33. The N 2 gas supplied to the transfer chamber 33 rises in the transfer chamber 33 and is discharged to the pumping portion 26 through the opening 27. The N 2 gas discharged to the pumping unit 26 is exhausted from the exhaust pipe 61 together with the HCDS gas discharged to the pumping unit 26 from the inside of the processing chamber 23. By exhausting the gas from the transfer chamber 33 via the pumping unit 26, the exhaust operation can be stabilized.
- the gas pressure in the transfer chamber 33 becomes higher than the gas pressure in the processing chamber 23 (gas pressure in the processing chamber 23 ⁇ gas in the transfer chamber 33).
- the flow rate of gas supplied into the transfer chamber 33 becomes larger than the total flow rate of gas supplied into the processing chamber 23 (total flow rate of gas supplied into the processing chamber 23 ⁇ transfer chamber). It is performed under the conditions such as (the flow rate of gas supplied into 33).
- valve 52b is closed to stop the supply of HCDS gas into the processing chamber 23. Then, the gas or the like remaining in the processing chamber 23 is removed from the processing chamber 23 (purge). At this time, opening valve 53b, the 55b, supplies a N 2 gas gas supply pipe 51, through the nozzle 24 into the processing chamber 23. The N 2 gas acts as a purge gas, whereby the inside of the processing chamber 23 is purged.
- the raw material gas includes monochlorosilane (SiH 3 Cl, abbreviated as MCS) gas, dichlorosilane (SiH 2 Cl 2 , abbreviated as DCS) gas, trichlorosilane (SiHCl 3 , abbreviated as TCS) gas, and tetra.
- MCS monochlorosilane
- DCS dichlorosilane
- TCS trichlorosilane
- Chlorosilane-based gases such as chlorosilane (SiCl 4 , abbreviated as STC) gas and octachlorotrisilane (Si 3 Cl 8 , abbreviation: OCTS) gas can be used.
- a rare gas such as Ar gas, He gas, Ne gas, or Xe gas can be used in addition to N 2 gas. This point is the same in each step described later.
- ⁇ O 2 gas supply step: S143> O 2 gas is supplied to the wafer 200 in the processing chamber 23, that is, the first layer formed on the wafer 200.
- valve 54b By opening the valve 54b, flow the O 2 gas into the gas supply pipe 54.
- the flow rate of the O 2 gas is adjusted by the MFC 54a, and the O 2 gas is supplied into the processing chamber 23 via the gas supply pipe 51 and the nozzle 24.
- the O 2 gas supplied into the processing chamber 23 rises in the processing chamber 23, flows out from the upper end opening of the inner pipe 21 to the exhaust flow path 25, flows down the exhaust flow path 25, and is exhausted via the pumping portion 26. It is exhausted from the pipe 61.
- O 2 gas is supplied to the wafer 200.
- the valves 53b and 55b are closed to prevent the N 2 gas from being supplied into the processing chamber 23 together with the O 2 gas.
- the O 2 gas is supplied into the processing chamber 23 without being diluted with the N 2 gas, and is exhausted from the exhaust pipe 61.
- the film formation rate of the SiO film can be improved.
- the processing conditions in this step are O 2 gas supply flow rate: 0.1 to 10 slm Processing pressure: 1 to 4000 Pa, preferably 1 to 3000 Pa Is exemplified.
- Other treatment conditions are the same as the treatment conditions in the HCDS gas supply step (S141).
- the first layer formed on the wafer 200 is oxidized (modified).
- a layer containing Si and O that is, a SiO layer is formed on the wafer 200 as the second layer.
- impurities such as Cl contained in the first layer form a gaseous substance containing at least Cl in the process of reforming the first layer with O 2 gas, and the treatment chamber. It is discharged from within 23. As a result, the second layer becomes a layer having less impurities such as Cl as compared with the first layer.
- the valve 54b is closed to stop the supply of O 2 gas into the processing chamber 23. Then, the gas or the like remaining in the processing chamber 23 is removed from the processing chamber 23 by the same processing procedure as the purge in the above-mentioned HCDS gas supply step (S141).
- reaction gas in addition to O 2 gas, nitrous oxide (N 2 O) gas, nitrogen monoxide (NO) gas, nitrogen dioxide (NO 2 ) gas, ozone (O 3 ) gas, steam ( O-containing gas such as H 2 O gas), carbon monoxide (CO) gas, and carbon dioxide (CO 2 ) gas can be used.
- N 2 O nitrous oxide
- NO nitrogen monoxide
- NO 2 nitrogen dioxide
- O 3 ozone
- steam O-containing gas such as H 2 O gas
- CO carbon monoxide
- CO 2 carbon dioxide
- a SiO film can be formed on the surface of the wafer 200.
- the above cycle is preferably repeated a plurality of times. That is, the thickness of the SiO layer formed per cycle is made thinner than the desired film thickness, and the film thickness formed by laminating the SiO layers is the desired film thickness (for example, 0.1 to 2 nm).
- the processed wafer 200 is disassembled (taken out) from the boat 41 and carried out to the outside of the lower chamber 30 through the substrate loading / unloading outlet 32 in the reverse procedure of the wafer charging step (S110) described above.
- the processed wafer 200 is taken out from the lower part of the boat 41. That is, the boat unload (S180) and the wafer discharge (S190) are partially performed in parallel.
- the film forming process for forming the SiO layer is completed for each of the plurality of wafers 200.
- plates 46 having different thicknesses at the central portion and the outer peripheral portion are arranged on the boat 41 along the wafer 200. That is, plates 46 having different heat capacities in the radial direction according to the distance from the heater 10 in the processing chamber 23 are arranged on the boat 41 along the wafer 200. This makes it possible to improve the uniformity of the in-plane temperature of the wafer in the film forming process.
- the thickness of the outer peripheral portion of the plate 46 is made thicker than the thickness of the central portion, and the heat capacity of the outer peripheral portion of the plate 46 is made larger than the heat capacity of the central portion.
- the plate 46 is arranged on the boat 41 so that the front surface of the plate 46 is parallel to the back surface of the wafer 200.
- the heat capacity of the space between the front surface of the plate 46 and the back surface of the wafer 200 can be made uniform within the back surface of the wafer 200, and the uniformity of the temperature inside the wafer surface of the film forming process can be more reliably improved. It becomes possible.
- the plate 46 is arranged on the boat 41 so that the space (volume) on the front surface of the wafer 200 is larger than the space (volume) on the back surface of the wafer 200.
- the amount of gas flowing in the space on the front surface of the wafer 200 can be made larger than the amount of gas flowing in the space on the back surface of the wafer 200, and it is possible to suppress a decrease in the film forming rate in the film forming process. ..
- the retention of gas on the surface of the wafer 200 can be suppressed, and the in-plane uniformity of the processing on the wafer 200 can be improved.
- HCDS gas chlorosilane gas
- the plate 46 is arranged on the boat 41 so that a space is formed between the back surface of the wafer 200 and the plate 46 (so that the plate 46 does not come into contact with the wafer 200).
- the wafer 200 is heated mainly by heat radiation from the heater 10 and heat radiation from the plate 46, and it is possible to improve the uniformity of the temperature between the wafers in the film forming process.
- the outer peripheral portion of the plate 46 is projected downward in the wafer arrangement direction to form a convex portion, and the surface of the plate 46 is a flat surface.
- a convex portion is formed on the outer peripheral surface of the plate 46, and the shortest distance between adjacent plates 46 can be made larger than when the back surface of the plate 46 is a flat surface, so that the wafer 200 can be loaded into the boat 41. It is possible to prevent the arm of the transfer robot from coming into contact with the plate 46 during dismounting.
- the plate 46 in the present disclosure is not limited to the above-described embodiment, and can be modified as in the modification shown below. These modifications can be combined arbitrarily.
- the thickness of the plate 46 may be increased from the inside to the outside in the radial direction.
- the thickness of the plate 46 may be increased from the inside to the outside in the radial direction so that the back surface of the plate 46 has a continuous slope or curved surface without steps. ..
- the thickness of the plate 46 may be gradually increased (stepped) from the inside to the outside in the radial direction. The same effect as that of the above-described embodiment can be obtained by this modification.
- the thickness of the plate 46 may vary depending on the arrangement position on the boat 41.
- the central region (Center zone) of the wafer array region in the wafer array direction is more likely to be heated than the upper region (Top zone) and lower region (Bottom zone) of the wafer array region in the wafer array direction. .. Therefore, for example, the thickness of the central portion (thinnest portion) of the plate 46 (the plate 46 arranged in the central portion in the vertical direction of the boat 41) located in the Center zone is located in the Top zone or the Bottom zone. It may be thinner than the thickness of the central portion of the plate 46 (the plate 46 arranged on the upper side or the lower side in the vertical direction of the boat 41). According to this modification, it is possible to surely improve the uniformity of the temperature between wafers in the film forming process.
- the thickness of the central portion (thinnest portion) of the plate 46 located in the Center zone may be thinner than the thickness of the central portion of the plate 46 located in the Top zone and the Bottom zone. This makes it possible to more reliably improve the uniformity of the temperature between wafers in the film forming process.
- the thickness of the outer peripheral portion of the plate 46 is made thicker than the thickness of the central portion, and the thickness of the outer peripheral portion (thickest portion) of the plate 46 located in the Center zone is set to the Top zone or the Bottom zone, preferably. It may be thinner than the thickness of the outer peripheral portion of the plate 46 located in the Top zone and the Bottom zone. This makes it possible to further reliably improve the uniformity of the temperature between the wafers in the film forming process.
- the forming material of the plate 46 may be different depending on the arrangement position on the boat 41. That is, a plate 46 located in the Center zone (a plate 46 arranged in the central portion in the vertical direction of the boat 41) and a plate 46 located in the Top zone or the Bottom zone (on the upper side or the lower side in the vertical direction of the boat).
- the arranged plate 46) and the plate 46) may be made of different materials.
- the plate 46 located in the Top zone or the Bottom zone may be formed of a material that absorbs heat from the heater 10 more easily than the plate 46 located in the Center zone. According to this modification, it is possible to surely improve the uniformity of the temperature between wafers in the film forming process.
- the forming material of the plate 46 may be different depending on the arrangement position on the boat 41, and the forming material may be different between the outer peripheral portion and the central portion of the plate 46. As a result, it is possible to surely improve the uniformity of the temperature between the wafers in the film forming process while obtaining the same effect as the above-described aspect.
- the outer peripheral portion of the plate 46 is not limited to the case where it is integrally formed with the central portion, and the outer peripheral portion of the plate 46 may be formed separately from the central portion. As a result, the heat capacity in the radial direction of the plate 46 can be easily changed according to the content of the film forming process, and the uniformity of the in-plane temperature of the wafer in the film forming process can be further improved.
- the heat radiation from the plate 46 can be reduced in the outer peripheral portion of the wafer 200, and the heat radiation from the plate 46 can be increased in the central portion of the wafer 200. As described above, the same effect as that of the above-described embodiment can be obtained in this modification as well.
- reaction tube has an inner tube and an outer tube
- present disclosure is not limited to this, and the reaction tube has a configuration having only an outer tube without an inner tube. May be good.
- the reaction tube may be configured horizontally and a chamber (lower chamber) may be arranged next to the reaction tube.
- a chamber lower chamber
- a chamber lower chamber
- the chamber forming the transfer chamber of the substrate is not limited to the above-mentioned lower chamber as long as it is arranged so as to be connected to the reaction tube.
- N nitrogen (N) -containing gas such as ammonia (NH 3 ) gas, triethylamine ((C 2 H 5 ) 3 N, abbreviation: TEA) gas and the like.
- N and carbon (C) -containing gas C-containing gas such as propylene (C 3 H 6 ) gas, boron (B) -containing gas such as trichloroborane (BCl 3 ) gas may be used.
- a silicon nitride film (SiN film), a silicon acid nitride film (SiON) film, a silicon carbon nitride film (SiCN film), and a silicon acid carbonized film (SiOC film) are placed on the surface of the substrate.
- Silicon acid carbon nitride film (SiOCN film), silicon boron nitride film (SiBN film), silicon boron nitride film (SiBCN film) and the like may be formed.
- the treatment procedure and treatment conditions for supplying these reaction gases can be, for example, the same as those for supplying the reaction gas in the above-described embodiment. In these cases as well, the same effects as those in the above-described embodiment can be obtained.
- the raw material and the reactant may be supplied to the substrate at the same time to form the above-mentioned various films on the substrate. Further, for example, the raw material may be supplied alone to the substrate to form a silicon film (Si film) on the substrate. In these cases as well, the same effects as those described above can be obtained.
- the treatment procedure and treatment conditions for supplying these raw materials and reactants can be the same as those for supplying the raw materials and reactants in the above-described embodiment. In these cases as well, the same effects as those in the above-described embodiment can be obtained.
- the present disclosure discloses metals containing titanium (Ti), zirconium (Zr), hafnium (Hf), tantalum (Ta), niobium (Nb), aluminum (Al), molybdenum (Mo), tungsten (W) and the like. It can also be applied when forming a system thin film. Even in these cases, the same effects as those described above can be obtained. That is, the present disclosure can be applied to the case of forming a film containing a predetermined element such as a metalloid element (semiconductor element) or a metal element.
- a predetermined element such as a metalloid element (semiconductor element) or a metal element.
- the present disclosure can be applied to a film forming process other than the thin film exemplified in the above-described embodiment, in addition to the thin-film forming described in the above-described embodiment.
- the specific content of the substrate treatment is not limited, and not only the film formation treatment, but also heat treatment (annealing treatment), plasma treatment, diffusion treatment, oxidation treatment, nitriding treatment, lithography treatment, carrier activation and flatness after ion implantation. It can also be applied when performing other substrate processing such as reflow processing for plasma conversion.
- the recipes used for each process are individually prepared according to the processing content and stored in the storage device 73 via a telecommunication line or an external storage device 81. Then, when starting each process, it is preferable that the CPU 71 appropriately selects an appropriate recipe from the plurality of recipes stored in the storage device 73 according to the processing content. This makes it possible to form films having various film types, composition ratios, film qualities, and film thicknesses with good reproducibility with one substrate processing device. In addition, the burden on the operator can be reduced, and each process can be started quickly while avoiding operation mistakes.
- the above recipe is not limited to the case of newly creating, for example, it may be prepared by changing an existing recipe already installed in the substrate processing device.
- the changed recipe may be installed on the substrate processing apparatus via a telecommunication line or a recording medium on which the recipe is recorded.
- the input / output device 82 included in the existing board processing device may be operated to directly change the existing recipe already installed in the board processing device.
- an example of forming a film using a batch type substrate processing apparatus that processes a plurality of substrates at one time has been described.
- the present disclosure is not limited to the above-described embodiment, and can be suitably applied to, for example, a case where a film is formed by using a single-wafer type substrate processing apparatus that processes one or several substrates at a time.
- an example of forming a film by using a substrate processing apparatus having a hot wall type processing furnace has been described.
- the present disclosure is not limited to the above-described embodiment, and can be suitably applied to the case where a film is formed by using a substrate processing apparatus having a cold wall type processing furnace.
- heating in the substrate treatment may be performed by irradiation with ultraviolet rays or the like.
- ultraviolet irradiation for example, a deuterium lamp, a helium lamp, a carbon arc lamp, a BRV light source, an excima lamp, a mercury lamp, or the like can be used as a heating means instead of the heater 10.
- the central portion of the plate-shaped member (plate) may be formed of a material that easily absorbs the wavelength emitted from the lamp rather than the material that forms the outer peripheral portion.
- each processing can be performed under the same processing procedure and processing conditions as those in the above-described embodiment, and the same effects as those in the above-described embodiment can be obtained.
- the above aspects can be used in combination as appropriate.
- the processing procedure and processing conditions at this time can be, for example, the same as the processing procedure and processing conditions of the above-described aspect.
- the substrate support is provided with a substrate processing apparatus in which plate-shaped members having different thicknesses in a central portion and an outer peripheral portion located outside the central portion are arranged along the substrate.
- Appendix 2 The device according to Appendix 1, preferably.
- the thickness of the outer peripheral portion of the plate-shaped member is thicker than the thickness of the central portion.
- Appendix 3 The device according to Appendix 1 or 2, preferably.
- the central portion is a portion of the plate-shaped member facing the substrate.
- the device according to any one of Supplementary note 1 to 3, preferably.
- the plate-shaped member is arranged on the substrate support so that the front surface of the plate-shaped member faces the back surface of the substrate and is parallel to the front surface of the substrate.
- Appendix 5 The device according to any one of Appendix 1 to 4, preferably.
- the plate-shaped member is arranged on the substrate support so that the space facing the front surface of the substrate is larger than the space facing the back surface of the substrate.
- Appendix 6 The device according to any one of Appendix 1 to 5, preferably.
- a gas nozzle for supplying processing gas to the substrate in the processing chamber is provided.
- the substrate support supports a plurality of the substrates so as to be vertically spaced from each other.
- the plate-shaped member is arranged so that the height positions of a plurality of gas supply holes provided in the gas nozzle are located between the back surface of the outer peripheral portion of the plate-shaped member and the front surface of the substrate. There is.
- Appendix 8 The device according to any one of Appendix 1 to 7, preferably.
- the thickness of the outer peripheral portion of the plate-shaped member is thicker than the thickness of the central portion over the entire circumference in the circumferential direction.
- Appendix 9 The device according to any one of Appendix 1 to 8, preferably.
- the back surface of the outer peripheral portion of the plate-shaped member protrudes from the back surface of the central portion.
- the device according to any one of Supplementary notes 1 to 9, preferably.
- the plate-shaped member is made of a high thermal conductive material.
- Appendix 12 The device according to Appendix 11, preferably. A heating unit for heating the processing chamber is provided.
- the central portion of the plate-shaped member is formed of a material that more easily absorbs heat from the heating portion than the material forming the outer peripheral portion.
- the device according to any one of Supplementary note 1 to 12, preferably.
- the surface of the plate-shaped member is a surface that has been surface-treated so as to be equal to the surface area of the back surface of the substrate.
- the device according to any one of Supplementary notes 1 to 13, preferably.
- the substrate support supports a plurality of the substrates so as to be vertically spaced from each other.
- the thickness of the central portion of the plate-shaped member arranged at the central portion of the substrate support portion is larger than the thickness of the central portion of the plate-shaped member arranged on the upper side or the lower side of the substrate support portion. Is also thin.
- the device according to any one of Supplementary notes 1 to 14, preferably.
- the substrate support supports a plurality of the substrates so as to be vertically spaced from each other.
- the plate-shaped member disposed in the central portion of the substrate support portion and the plate-shaped member disposed on the upper side or the lower side of the substrate support portion are formed of different materials.
- a substrate support that supports a substrate in the processing chamber of a substrate processing apparatus. It has a plate-shaped member having different thicknesses between the central portion and the outer peripheral portion outside the central portion. The plate-shaped member is provided with a substrate support configured to be arranged on the substrate support along the substrate when the substrate is supported.
- a plate-like member having a substrate supported by a substrate support and having different thicknesses between a central portion and an outer peripheral portion located outside the central portion is formed along the substrate.
- a method for manufacturing a semiconductor device or a method for processing a substrate which comprises a step of performing a predetermined process on the substrate while being arranged on a support.
- a plate-like member having a substrate supported by a substrate support and having different thicknesses between a central portion and an outer peripheral portion located outside the central portion is formed along the substrate.
- a program for causing the substrate processing apparatus to execute a procedure for performing a predetermined process on the substrate while being arranged on a support, or a computer-readable recording medium on which the program is recorded. ..
- reaction tube 20 ... reaction tube, 23 ... processing room, 33 ... transfer room, 41 ... boat (board support), 46 ... plate-shaped member
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Abstract
Description
基板に対する処理が行われる処理室と、
前記処理室内で前記基板を支持する基板支持具と、を備え、
前記基板支持具には、中央部と前記中央部よりも外側に位置する外周部とで厚さが異なる板状部材が前記基板に沿って配設されている基板処理装置に関する技術が提供される。
以下、本開示の一態様について、図1~図5を参照しながら説明する。
本実施形態に係る基板処理装置は、半導体装置の製造工程で用いられるもので、処理対象となる基板を複数枚(例えば5枚)ずつ纏めて処理を行う縦型基板処理装置として構成されている。処理対象となる基板としては、例えば、半導体集積回路装置(半導体デバイス)が作り込まれる半導体ウエハ基板(以下、単に「ウエハ」という。)が挙げられる。
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上に金属膜としてシリコン酸化(SiO)膜を形成する基板処理シーケンス、すなわち、成膜シーケンスの例について説明する。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70により制御される。
ウエハ200に対して、HCDSガスを供給するステップと、
ウエハ200に対してO2ガスを供給するステップと、
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およびOを含む膜(SiO膜)を形成するステップを行う。
複数のプレート46が多段に配設されたボート41に、複数枚(例えば5枚)のウエハ200を装填(ウエハチャージ)する。具体的には、移載室33内において、ボート41におけるウエハ200の載置位置を基板搬入搬出口32と対向させた状態で、基板搬入搬出口32を通じてボート41の所定の位置にウエハ200を載置する。1枚のウエハ200をボート41に装填したら、昇降・回転機構44によってボート41の上下方向位置を移動させつつ、ボート41の他のウエハ載置位置に他のウエハ200を装填する。この動作を複数回繰り返す。具体的には、ボート41を降ろしながらウエハ200を装填する。なお、ボート41には、複数枚のウエハ200を装填した際に隣接するウエハ200間の位置および最下部に配置されたウエハ200の下方の位置にウエハ200に沿ってプレート46が多段に配設された状態となるように、複数のプレート46が予め配設されている。このときボート41に装填されたウエハ200は、プレート46によって加熱される。
ウエハ200がボート41に装填された後、図1に示すように、複数枚のウエハ200を支持したボート41は、昇降・回転機構44によって上昇させられて(持ち上げられて)処理室23内へ搬入(ボートロード)される。この際、ガス供給孔24aの高さ位置が、それぞれ、プレート46の外周部の裏面と直下のウエハ200の表面との間の位置、および最上部に配置されたウエハ200の表面よりもわずかに高い位置に位置するように、ボート41の高さ位置を調整する。これにより、各ウエハ200の表面に対してガスを確実に供給することが可能となる。
処理室23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64によって処理室23内が真空排気(減圧排気)される。この際、処理室23内の圧力は圧力センサ62で測定され、この測定された圧力情報に基づきAPCバルブ63がフィードバック制御される(圧力調整)。また、処理室23内のウエハ200が、所望の処理温度となるように、ヒータ10によって加熱される。この際、処理室23内が所望の温度分布となるように、温度センサ11が検出した温度情報に基づきヒータ10への通電具合がフィードバック制御される(温度調整)。また、昇降・回転機構44によるウエハ200の回転を開始する。真空ポンプ64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に対する処理が完了するまでの間は継続して行われる。
その後、次の2つのステップ、すなわち、HCDSガス供給ステップ(S141)、O2ガス供給ステップ(S143)を順次実施する。
このステップでは、処理室23内のウエハ200に対してHCDSガスを供給する。
HCDSガス供給流量:0.01~2slm、好ましくは0.1~1slm
N2ガス供給流量(ガス供給管毎):0~10slm
各ガス供給時間:0.1~120秒、好ましくは0.1~60秒
処理温度:250~900℃、好ましくは400~700℃
処理圧力:1~2666Pa、好ましくは67~1333Pa
が例示される。
このステップでは、処理室23内のウエハ200、すなわち、ウエハ200上に形成された第1層に対してO2ガスを供給する。
O2ガス供給流量:0.1~10slm
処理圧力:1~4000Pa、好ましくは1~3000Pa
が例示される。他の処理条件は、HCDSガス供給ステップ(S141)における処理条件と同様とする。
上述したHCDSガス供給ステップ(S141)とO2ガス供給ステップ(S143)とを非同時に、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の表面上にSiO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されるSiO層の厚さを所望の膜厚よりも薄くし、SiO層を積層することで形成される膜の膜厚が所望の膜厚(例えば0.1~2nm)になるまで、上述のサイクルを複数回(例えば10~80回程度、より好ましくは10~15回程度)繰り返すのが好ましい。上述のサイクルが終了する度に、このサイクルを予め設定された回数(所定回数)実施したか否かを判断する。
上述のサイクルを所定回数繰り返したことが確認された後、ガス供給管53,55のそれぞれからパージガスとしてN2ガスを処理室23内へ供給し、ポンピング部26を介して排気管61から排気する。これにより、処理室23内がパージされ、処理室23内に残留するガスや副生成物が処理室23内から除去される。
その後、処理室23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23内の圧力が常圧に復帰される。
その後、上述したボートロード工程(S120)とは逆の手順で、図2に示すように、昇降・回転機構44によりボート41が下降され、処理済のウエハ200が、ボート41に支持された状態で処理室23内から下部チャンバ30の移載室33に搬出(ボートアンロード)される。
その後、上述したウエハチャージ工程(S110)とは逆の手順で、処理済のウエハ200は、ボート41より脱装され(取り出され)、基板搬入搬出口32を通じて下部チャンバ30の外部に搬出する。なお、処理済のウエハ200の取り出しは、ボート41の下部から行われる。つまり、ボートアンロード(S180)とウエハディスチャージ(S190)は、一部並行して行われる。
上述の態様によれば、以下に示す1つまたは複数の効果が得られる。
本開示におけるプレート46は、上述の態様に限定されず、以下に示す変形例のように変更することができる。これらの変形例は任意に組み合わせることができる。
プレート46の厚さを径方向内側から外側に向かうにつれて厚くしてもよい。例えば、図3(b)に示すように、プレート46の裏面が段差のない連続的な斜面や曲面となるように、プレート46の厚さを径方向内側から外側に向かうにつれて厚くしてもよい。また例えば、図3(c)に示すように、プレート46の厚さを径方向内側から外側に向かうにつれて段階的(階段状)に厚くしてもよい。本変形例によっても、上述の態様と同様の効果が得られる。
プレート46の厚さをボート41における配設位置によって異ならせてもよい。ウエハ配列領域のうちウエハ配列方向における中央部の領域(Centerゾーン)は、ウエハ配列領域のうちウエハ配列方向における上部側の領域(Topゾーン)や下部側の領域(Bottomゾーン)よりも加熱されやすい。このため、例えば、Centerゾーンに位置するプレート46(ボート41の垂直方向における中央部に配設されるプレート46)の中央部(最薄部)の厚さを、Topゾーン又はBottomゾーンに位置するプレート46(ボート41の垂直方向における上部側または下部側に配設されるプレート46)の中央部の厚さよりも薄くしてもよい。本変形例によれば、成膜処理のウエハ間温度の均一性を確実に向上させることが可能となる。
プレート46の形成材料をボート41における配設位置によって異ならせてもよい。すなわち、Centerゾーンに位置するプレート46(ボート41の垂直方向における中央部に配設されるプレート46)と、Topゾーン又はBottomゾーンに位置するプレート46(ボートの垂直方向における上部側または下部側に配設されるプレート46)と、は互いに異なる材料で形成されていてもよい。例えば、Topゾーン又はBottomゾーンに位置するプレート46を、Centerゾーンに位置するプレート46よりもヒータ10からの熱を吸収しやすい材料で形成してもよい。本変形例によれば、成膜処理のウエハ間温度の均一性を確実に向上させることが可能となる。
プレート46の外周部は中央部と一体で構成されている場合に限定されず、プレート46の外周部は、中央部とは別体で構成されていてもよい。これにより、プレート46の径方向の熱容量を成膜処理の内容に応じて容易に変更でき、成膜処理のウエハ面内温度の均一性をより向上させることができる。
ウエハ200の中央部がウエハ200の外周部よりも加熱されやすい(冷却されやすい)場合には、プレート46の中央部の厚さを外周部の厚さよりも厚くし、プレート46の中央部の熱容量を外周部の熱容量よりも大きくしてもよい。これにより、成膜処理におけるウエハ200の加熱の際、ウエハ200の外周部ではプレート46からの熱輻射を多くでき、ウエハ200の中央部ではプレート46からの熱輻射を少なくできる。また、成膜処理におけるウエハ200の冷却の際、ウエハ200の外周部ではプレート46からの熱輻射を少なくでき、ウエハ200の中央部ではプレート46からの熱輻射を多くできる。このように、本変形例においても、上述の態様と同様の効果が得られる。
以上、本開示の態様を具体的に説明したが、本開示が上述の態様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が可能である。
(HCDS→O2→NH3)×n ⇒ SiON
(HCDS→TEA)×n ⇒ SiCN
(HCDS→TEA→O2)×n ⇒ SiOC(N)
(HCDS→C3H6→NH3→O2)×n ⇒ SiOCN
(HCDS→C3H6→O2→NH3)×n ⇒ SiOCN
(HCDS→BCl3→NH3)×n ⇒ SiBN
(HCDS→C3H6→BCl3→NH3)×n ⇒ SiBCN
(DCS→O2)×n ⇒ SiO
(DCS→O2→NH3)×n ⇒ SiON
以下に、本開示の好ましい態様について付記する。
本開示の一態様によれば、
基板に対する処理が行われる処理室と、
前記処理室内で前記基板を支持する基板支持具と、を備え、
前記基板支持具には、中央部と前記中央部よりも外側に位置する外周部とで厚さが異なる板状部材が前記基板に沿って配設されている
基板処理装置が提供される。
付記1に記載の装置であって、好ましくは、
前記板状部材の前記外周部の厚さが前記中央部の厚さよりも厚い。
付記1または2に記載の装置であって、好ましくは、
前記中央部は、前記板状部材のうち前記基板と対向する部分である。
付記1~3のいずれか1項に記載の装置であって、好ましくは、
前記板状部材は、前記板状部材の表面が前記基板の裏面と対向するとともに、前記基板の表面と平行になるように前記基板支持具に配設されている。
付記1~4のいずれか1項に記載の装置であって、好ましくは、
前記板状部材は、前記基板の表面と対向する空間が前記基板の裏面と対向する空間よりも大きくなるように前記基板支持具に配設されている。
付記1~5のいずれか1項に記載の装置であって、好ましくは、
前記処理室内の基板に対して処理ガスを供給するガスノズルを備え、
前記基板支持具は、複数の前記基板を垂直方向にそれぞれが間隔を空けて配列されるように支持し、
前記板状部材は、前記ガスノズルに設けられた複数のガス供給孔の高さ位置がそれぞれ前記板状部材の前記外周部の裏面と前記基板の表面との間に位置するように配設されている。
付記1~6のいずれか1項に記載の装置であって、好ましくは、
前記板状部材の厚さが前記板状部材の径方向内側から外側に向かうにつれて厚くなっている。
付記1~7のいずれか1項に記載の装置であって、好ましくは、
前記板状部材の前記外周部の厚さは、周方向の全周にわたって前記中央部の厚さよりも厚い。
付記1~8のいずれか1項に記載の装置であって、好ましくは、
前記板状部材の前記外周部の裏面は前記中央部の裏面よりも突出している。
付記1~9のいずれか1項に記載の装置であって、好ましくは、
前記板状部材は高熱伝導材料で形成されている。
付記1~10のいずれか1項に記載の装置であって、好ましくは、
前記板状部材の前記中央部と前記外周部とは互いに異なる材料で形成されている。
付記11に記載の装置であって、好ましくは、
前記処理室内を加熱する加熱部を備え、
前記板状部材の前記中央部は、前記外周部を形成する材料よりも前記加熱部からの熱を吸収しやすい材料で形成されている。
付記1~12のいずれか1項に記載の装置であって、好ましくは、
前記板状部材の表面は、前記基板の裏面の表面積と等しくなるような表面処理が施された面である。
付記1~13のいずれか1項に記載の装置であって、好ましくは、
前記基板支持具は、複数の前記基板を垂直方向にそれぞれが間隔を空けて配列されるように支持し、
前記基板支持部の中央部に配設された前記板状部材の前記中央部の厚さが前記基板支持部の上部側または下部側に配設された前記板状部材の前記中央部の厚さよりも薄い。
付記1~14のいずれか1項に記載の装置であって、好ましくは、
前記基板支持具は、複数の前記基板を垂直方向にそれぞれが間隔を空けて配列されるように支持し、
前記基板支持部の中央部に配設された前記板状部材と、前記基板支持部の上部側または下部側に配設された前記板状部材とは、互いに異なる材料で形成されている。
付記1~15のいずれか1項に記載の装置であって、好ましくは、
前記板状部材の前記外周部は、前記中央部とは別体で構成されている。
本開示の他の態様によれば、
基板処理装置の処理室内で基板を支持する基板支持具であって、
中央部と前記中央部よりも外側の外周部とで厚さが異なる板状部材を有し、
前記板状部材は、前記基板を支持する際に前記基板に沿って前記基板支持具に配設されるよう構成される
基板支持具が提供される。
本開示のさらに他の態様によれば、
基板処理装置の処理室内において、基板を基板支持具に支持させ、かつ、中央部と前記中央部よりも外側に位置する外周部とで厚さが異なる板状部材を前記基板に沿って前記基板支持具に配設させた状態で、前記基板に対して所定の処理を行う工程を有する半導体装置の製造方法または基板処理方法が提供される。
本開示のさらに他の態様によれば、
基板処理装置の処理室内において、基板を基板支持具に支持させ、かつ、中央部と前記中央部よりも外側に位置する外周部とで厚さが異なる板状部材を前記基板に沿って前記基板支持具に配設させた状態で、前記基板に対して所定の処理を行う手順をコンピュータによって前記基板処理装置に実行させるプログラム、または、該プログラムを記録したコンピュータ読み取り可能な記録媒体が提供される。
Claims (19)
- 基板に対する処理が行われる処理室と、
前記処理室内で前記基板を支持する基板支持具と、を備え、
前記基板支持具には、中央部と前記中央部よりも外側に位置する外周部とで厚さが異なる板状部材が前記基板に沿って配設されている
基板処理装置。 - 前記板状部材の前記外周部の厚さが前記中央部の厚さよりも厚い請求項1に記載の基板処理装置。
- 前記中央部は、前記板状部材のうち前記基板と対向する部分である請求項1に記載の基板処理装置。
- 前記板状部材は、前記板状部材の表面が前記基板の裏面と対向するとともに、前記基板の表面と平行になるように前記基板支持具に配設されている請求項1に記載の基板処理装置。
- 前記板状部材は、前記基板の表面と対向する空間が前記基板の裏面と対向する空間よりも大きくなるように前記基板支持具に配設されている請求項1に記載の基板処理装置。
- 前記処理室内の基板に対して処理ガスを供給するガスノズルを備え、
前記基板支持具は、複数の前記基板を垂直方向にそれぞれが間隔を空けて配列されるように支持し、
前記板状部材は、前記ガスノズルに設けられた複数のガス供給孔の高さ位置がそれぞれ前記板状部材の前記外周部の裏面と前記基板の表面との間に位置するように配設されている請求項1に記載の基板処理装置。 - 前記板状部材の厚さが前記板状部材の径方向内側から外側に向かうにつれて厚くなっている請求項1に記載の基板処理装置。
- 前記板状部材の前記外周部の厚さは、周方向の全周にわたって前記中央部の厚さよりも厚い請求項1に記載の基板処理装置。
- 前記板状部材の前記外周部の裏面は前記中央部の裏面よりも突出している請求項1に記載の基板処理装置。
- 前記板状部材は高熱伝導材料で形成されている請求項1に記載の基板処理装置。
- 前記板状部材の前記中央部と前記外周部とは互いに異なる材料で形成されている請求項1に記載の基板処理装置。
- 前記処理室内を加熱する加熱部を備え、
前記板状部材の前記中央部は、前記外周部を形成する材料よりも前記加熱部からの熱を吸収しやすい材料で形成されている請求項1に記載の基板処理装置。 - 前記板状部材の表面は、前記基板の裏面の表面積と等しくなるような表面処理が施された面である請求項1に記載の基板処理装置。
- 前記基板支持具は、複数の前記基板を垂直方向にそれぞれが間隔を空けて配列されるように支持し、
前記基板支持部の中央部に配設された前記板状部材の前記中央部の厚さが前記基板支持部の上部側または下部側に配設された前記板状部材の前記中央部の厚さよりも薄い請求項1に記載の基板処理装置。 - 前記基板支持具は、複数の前記基板を垂直方向にそれぞれが間隔を空けて配列されるように支持し、
前記基板支持部の中央部に配設された前記板状部材と、前記基板支持部の上部側または下部側に配設された前記板状部材とは、互いに異なる材料で形成されている請求項1に記載の基板処理装置。 - 前記板状部材の前記外周部は、前記中央部とは別体で構成されている請求項1に記載の基板処理装置。
- 基板処理装置の処理室内で基板を支持する基板支持具であって、
中央部と前記中央部よりも外側の外周部とで厚さが異なる板状部材を有し、
前記板状部材は、前記基板を支持する際に前記基板に沿って前記基板支持具に配設されるよう構成される
基板支持具。 - 基板処理装置の処理室内において、基板を基板支持具に支持させ、かつ、中央部と前記中央部よりも外側に位置する外周部とで厚さが異なる板状部材を前記基板に沿って前記基板支持具に配設させた状態で、前記基板に対して所定の処理を行う工程を有する
半導体装置の製造方法。 - 基板処理装置の処理室内において、基板を基板支持具に支持させ、かつ、中央部と前記中央部よりも外側に位置する外周部とで厚さが異なる板状部材を前記基板に沿って前記基板支持具に配設させた状態で、前記基板に対して所定の処理を行う手順をコンピュータによって前記基板処理装置に実行させる
プログラム。
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CN201980099061.9A CN114207801A (zh) | 2019-08-06 | 2019-08-06 | 基板处理装置、基板支承件、半导体装置的制造方法及程序 |
JP2021538591A JP7270045B2 (ja) | 2019-08-06 | 2019-08-06 | 基板処理装置、基板支持具、半導体装置の製造方法およびプログラム |
PCT/JP2019/030919 WO2021024385A1 (ja) | 2019-08-06 | 2019-08-06 | 基板処理装置、基板支持具、半導体装置の製造方法およびプログラム |
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TW109122865A TWI788683B (zh) | 2019-08-06 | 2020-07-07 | 基板處理裝置、基板支撐具、半導體裝置的製造方法及程式 |
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