WO2022065163A1 - 基板処理装置、半導体装置の製造方法、基板処理方法、及びプログラム - Google Patents
基板処理装置、半導体装置の製造方法、基板処理方法、及びプログラム Download PDFInfo
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- WO2022065163A1 WO2022065163A1 PCT/JP2021/033958 JP2021033958W WO2022065163A1 WO 2022065163 A1 WO2022065163 A1 WO 2022065163A1 JP 2021033958 W JP2021033958 W JP 2021033958W WO 2022065163 A1 WO2022065163 A1 WO 2022065163A1
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- 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
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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
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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
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- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
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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
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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
- C23C16/455—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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- C23C16/45578—Elongated nozzles, tubes with holes
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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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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
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- 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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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
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- 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
- H01L21/02227—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process
- H01L21/0223—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by oxidation, e.g. oxidation of the substrate
- H01L21/02233—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by oxidation, e.g. oxidation of the substrate of the semiconductor substrate or a semiconductor layer
- H01L21/02236—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by oxidation, e.g. oxidation of the substrate of the semiconductor substrate or a semiconductor layer group IV semiconductor
- H01L21/02238—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by oxidation, e.g. oxidation of the substrate of the semiconductor substrate or a semiconductor layer group IV semiconductor silicon in uncombined form, i.e. pure silicon
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- H—ELECTRICITY
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
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- 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
- H01L21/02227—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process
- H01L21/02255—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by thermal treatment
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- H—ELECTRICITY
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- 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
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- 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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- 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
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- H—ELECTRICITY
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- H01L21/683—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 for supporting or gripping
- H01L21/687—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 for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—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 for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68771—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 for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by supporting more than one semiconductor substrate
Definitions
- the present disclosure relates to a substrate processing apparatus, a method for manufacturing a semiconductor apparatus, a substrate processing method, and a program.
- a step of forming an oxide film on the surface of a substrate in a reaction tube there is a step of forming an oxide film on the surface of a substrate in a reaction tube.
- a plurality of substrates may be loaded in the reaction chamber at intervals and processed at the same time (see Patent Document 1).
- the film thickness of the oxide film formed on the substrate may differ due to the different arrangement locations of the plurality of substrates in the reaction chamber (Loading effect).
- Loading effect it is necessary to maintain the uniformity of the concentration of oxidizing gas in the reaction chamber. Therefore, it is conceivable to adjust the flow rate of the gas supplied to the reaction chamber, but further ingenuity is required to improve the uniformity of the film thickness.
- the present disclosure has been made in consideration of the above facts, and provides a technique capable of improving the uniformity of the thickness of the oxide film regardless of the arrangement position of the substrate.
- a reaction tube having a bottom opening into which a plurality of substrates are taken in and out and processing the plurality of substrates and the plurality of substrates arranged in the reaction tube are arranged.
- a retainer held in the region and a hydrogen-containing gas are arranged in the reaction tube from a plurality of locations corresponding to the first region in which a plurality of product substrates are arranged in the substrate arrangement region.
- a second region in which a dummy substrate or a heat insulating body held by the holder is arranged is arranged, and a diluted gas is supplied into the reaction tube from a position corresponding to the second region.
- a substrate processing apparatus composed of a plurality of porous nozzles having injection holes corresponding to the divided regions divided in the arrangement direction of the above.
- the film thickness formed differs between the arrangement position near the dummy substrate or the heat insulating body arranged together with the substrate in the reaction tube and the other arrangement positions. Since the product wafer has a larger film formation area per wafer than the dummy substrate, the amount of atomic oxygen group consumed during film formation per unit time is the region where the dummy substrate is arranged. Because it differs depending on the region where the product wafers are arranged, it was found that the film thickness of the product wafers differs between those arranged near the dummy substrate and those not arranged.
- FIG. 1 shows an overall view of the substrate processing apparatus S.
- the substrate processing device S is a wafer transfer means (transfer machine) 2 for transferring a wafer between the pod stocker 1 on which the wafer pod is mounted, the boat 3, and the wafer pod and the boat 3 mounted on the pod stocker 1.
- a boat elevating means (boat elevator) 4 for inserting and pulling out the boat 3 into the heat treatment furnace 5, and a heat treatment furnace 5 provided with a heating means (heater) are included.
- FIG. 2 shows a schematic cross-sectional view illustrating the configuration of the heat treatment furnace 5.
- the top and bottom in FIG. 2 coincide with the vertical direction, and in the present embodiment, the upper and lower descriptions mean the upper and lower parts in the vertical direction.
- the heat treatment furnace 5 has a resistance heating heater 9 as a heating source.
- the heater 9 has a cylindrical shape and is vertically installed by being supported by a heater base (not shown). Inside the heater 9, the reaction tube 10 is arranged concentrically with the heater 9.
- a processing chamber (reaction chamber) 4 for processing the substrate is formed in the reaction tube 10, and the boat 3 as a substrate holder is configured to be carried in.
- the boat 3 is configured to hold a wafer 6 such as a silicon wafer as a plurality of substrates in a plurality of stages with a gap (board pitch interval) in a substantially horizontal state.
- the uppermost wafer support position in the boat 3 is referred to as # 120, and the lowermost wafer support position is referred to as # 1.
- the wafer 6 held at the support position of the nth stage from the lowest stage in the boat 3 is referred to as a wafer #n.
- the wafer support position referred to here may include not only the wafer 6 but also a position for supporting a dummy substrate or a heat insulating plate, which will be described later, and the interval between the heat insulating plate support positions is a wafer support for supporting the wafer 6. It can be different from the position spacing.
- a bottom opening 4A for inserting the boat 3 is configured and opened.
- the open portion (bottom opening 4A) of the reaction tube 10 is configured to be sealed by a seal cap 13.
- a heat insulating cap 15 that supports the boat 3 from below is provided on the seal cap 13.
- the heat insulating cap 15 is attached to the rotation mechanism 14 via a rotation shaft (not shown) provided so as to penetrate the seal cap 13.
- the rotation mechanism 14 is configured to rotate the wafer 6 supported by the boat 3 by rotating the heat insulating cap 12 and the boat 3 via the rotation shaft.
- a shower plate 12 is attached to the wall of the ceiling 4B which is a closed end opposite to the bottom opening 4A of the reaction tube 10, and a buffer chamber 12a is formed by the ceiling wall of the reaction tube 10 and the shower plate 12. .
- An inert gas supply nozzle 7 that supplies the inert gas as a diluting gas to the wafer 6 from above in the reaction chamber 4 is connected to the upper part of the reaction tube 10 so as to communicate with the buffer chamber 12a. There is.
- the gas injection port of the inert gas supply nozzle 7 faces downward, and is configured to inject the inert gas from the upper side to the lower side in the reaction chamber 4 (along the loading direction of the wafer).
- the inert gas supplied from the inert gas supply nozzle 7 is sent into the buffer chamber 12a and supplied into the reaction chamber 4 via the shower plate 12.
- the shower plate 12 constitutes a gas supply port that supplies the inert gas in a shower shape from one end side to the other end side of the wafer arrangement region in which a plurality of wafers 6 are arranged.
- the ceiling gas supply unit is composed of the shower plate 12 and the buffer chamber 12a.
- a noble gas such as nitrogen (N 2 ) gas, argon (Ar) gas, helium (He) gas, neon (Ne) gas, xenone (Xe) gas can be used.
- nitrogen (N 2 ) gas argon (Ar) gas, helium (He) gas, neon (Ne) gas, xenone (Xe) gas
- Ar argon
- He helium
- Xe xenone
- the inert gas one or more of these can be used. This point is the same for other inert gases described later.
- An inert gas supply pipe 70 as an inert gas supply line is connected to the inert gas supply nozzle 7.
- an inert gas supply source (not shown), an on-off valve 93, a mass flow controller (MFC) 92 as a flow rate control means (flow control), and an on-off valve 91 are provided. Is provided.
- a hydrogen-containing gas supply nozzle 8b that supplies hydrogen-containing gas to the wafer 6 from the side in the reaction chamber 4 is connected to the lower side of the reaction tube 10 so as to penetrate the side wall of the reaction tube 10.
- the hydrogen-containing gas supply nozzle 8b is arranged in a region corresponding to the wafer arrangement region PW as the first region, that is, in a cylindrical region facing the wafer arrangement region PW and surrounding the wafer arrangement region PW in the reaction tube 10. ..
- the hydrogen-containing gas supply nozzle 8b is composed of a plurality of (three in this embodiment) L-shaped nozzles having different lengths, each of which is formed in the reaction tube 10 along the inner wall of the side wall of the reaction tube 10. I'm standing up.
- H 2 hydrogen
- H 2 O water vapor
- NH 3 ammonia
- N 2 H 4 hydrazine
- N 2 H 2 diazene
- N 3 H 8 At least one of the hydrocarbon gases, or a mixed gas thereof, is exemplified.
- the wafer arrangement region PW is a region in which the product wafer is mainly arranged, and as an example, the support positions # 6 to # 115 can be set.
- the upper dummy arrangement region SD-T on the ceiling side corresponding to the position where the side dummy substrate SD is supported by the holder 3 can be the support positions # 116 to # 120 as an example.
- the lower dummy arrangement region SD-U on the lower opening side corresponding to the position where the side dummy substrate SD is supported by the holder 3 can be set to the support positions # 1 to # 5 as an example.
- the plurality of nozzles constituting the hydrogen-containing gas supply nozzle 8b have at least one injection hole at different positions in the wafer arrangement direction.
- the hydrogen-containing gas is supplied into the reaction tube 10 from a plurality of divided regions in which the regions corresponding to the wafer arrangement region PW and the upper dummy arrangement region SD-T are divided in the wafer arrangement direction, respectively, in the wafer arrangement direction (vertical direction). It is possible to adjust the hydrogen concentration in the reaction chamber 4 of the above.
- the number of divisions is 3 and each of the plurality of nozzles has 1 injection hole, the nozzles are supplied into the reaction tube 10 from 3 places.
- the hydrogen-containing gas supply nozzle 8b is provided along the inner wall on the side closer to the inner wall of the side wall of the reaction tube 10 than the wafer 6.
- the first nozzle is configured by the hydrogen-containing gas supply nozzle 8b.
- the upper surfaces of the tips of the plurality of nozzles constituting the hydrogen-containing gas supply nozzle 8b are each closed, and at least one, more preferably, a plurality of gas injection holes are provided on the side surface of each nozzle tip.
- an arrow extending from the hydrogen-containing gas supply nozzle 8b toward the wafer 6 indicates the injection direction of the hydrogen-containing gas from each gas injection hole, and the root portion of each arrow indicates each gas injection hole. That is, the gas injection hole faces the wafer 6 side, and is configured to inject hydrogen-containing gas horizontally (in the direction along the main surface of the wafer) toward the wafer 6 from the side in the reaction chamber 4. ing.
- a nozzle having a plurality of gas injection holes along the arrangement direction of the substrate as described above is a kind of a porous nozzle.
- the longest nozzle (hereinafter referred to as “hydrogen-containing gas supply nozzle 8b-1”) has five gas injection holes, and the second longest nozzle (hereinafter referred to as “hydrogen-containing gas supply nozzle 8b-2"). The) is provided with five gas injection holes, and the third longest nozzle (hereinafter referred to as “hydrogen-containing gas supply nozzle 8b-3”) is provided with seven gas injection holes.
- These plurality of (17 in this embodiment) gas injection holes are provided at equal intervals in each nozzle.
- the injection holes formed in the hydrogen-containing gas supply nozzles 8b-1, 8b-2, and 8b-3 are designated as injection holes H4 to H20 in order from the bottom opening 4A side.
- the injection holes H16 to H20 of the hydrogen-containing gas supply nozzle 8b-1 are formed corresponding to the divided region at the highest position, and the hydrogen-containing gas is formed.
- the injection holes H11 to H15 of the supply nozzle 8b-2 are formed corresponding to the divided regions at the second highest position, and the injection holes H4 to H10 of the hydrogen-containing gas supply nozzle 8b-3 are formed at the third highest position. It is formed corresponding to the divided area.
- the hydrogen-containing gas supply nozzles 8b-1, 8b-2, 8b-3 share the gas supply to the divided region.
- the product wafers can be arranged at regular intervals in the divided region. Further, all the injection holes H4 to H20 can be arranged at equal intervals so that the number of product wafers allocated to each injection hole is a fixed number larger than 1.
- the height of the divided region (length in the wafer arrangement direction) is arbitrary and may be different from each other, or the divided region excluding the divided region at the lowest position (that is, the divided region at the first and second highest positions). The heights of the can be made equal. For example, the same number of substrates as the number of substrates (25) accommodated in one wafer pod can be arranged in these divided regions.
- a hydrogen-containing gas supply pipe 80b as a hydrogen-containing gas supply line is connected to the hydrogen-containing gas supply nozzle 8b.
- the hydrogen-containing gas supply pipe 80b is composed of a plurality of pipes (three in this embodiment), and is connected to each of the plurality of nozzles constituting the hydrogen-containing gas supply nozzle 8b.
- a hydrogen-containing gas supply source not shown
- an on-off valve 96b in order from the upstream side, a hydrogen-containing gas supply source (not shown), an on-off valve 96b, a mass flow controller (MFC) 95b as a flow rate control means (flow control), and an on-off valve 94b. Is provided.
- MFC mass flow controller
- the on-off valve 96b, the mass flow controller 95b, and the on-off valve 94b are provided in each of the plurality of pipes constituting the hydrogen-containing gas supply pipe 80b, and the plurality of nozzles constituting the hydrogen-containing gas supply nozzle 8b are provided.
- the flow rate of the hydrogen-containing gas can be controlled independently for each.
- the discharge flow rate per hole of the injection holes H4 and H5 is set to be about 1.3 to 2.1 times larger than that of the injection holes H6 to H10. It is preferable to do so.
- 168 sccm can be supplied from H4 and H5, respectively, and 100 sccm can be supplied from H6 to H20, respectively.
- the discharge flow rates of the equally spaced injection holes are controlled, but even if the openings (injection holes) or the intervals are formed so as to monotonically increase the discharge flow rate per unit length, they may be formed and controlled. good.
- An inert gas supply nozzle 8c shorter than the hydrogen-containing gas supply nozzle 8b-3 is connected to the lower side of the reaction tube 10 so as to penetrate the side wall of the reaction tube 10.
- the inert gas supply nozzle 8c is on the bottom opening 4A side of the wafer arrangement region PW and faces the region where the dummy substrate or the heat insulating body held by the boat 3 is arranged (hereinafter referred to as “lower dummy arrangement region SD-U”).
- the lower dummy array region SD-U is arranged in a cylindrical region surrounding the SD-U.
- the third nozzle is formed by the inert gas supply nozzle 8c.
- the upper surface of the tip of the inert gas supply nozzle 8c is closed, and at least one gas injection hole is provided on the side surface of the tip of the nozzle (two in this embodiment).
- the arrows extending from the inert gas supply nozzle 8c toward the lower dummy arrangement region SD-U indicate the injection direction of the inert gas from each gas injection hole, and the root portion of each arrow indicates each gas injection hole. Is shown. That is, the gas injection hole faces the lower dummy arrangement region SD-U side, and as a diluting gas toward the dummy wafer or the heat insulating plate in the horizontal direction (in the direction along the main surface of the wafer) from the side in the reaction chamber 4. It is configured to inject the inert gas of.
- the two injection holes formed in the inert gas supply nozzle 8c are designated as injection holes H1 and H2 from the lower opening 4A side.
- the distance between the injection holes H4 to H20 is the distance DM and the distance between the injection holes H1 and H2 is the distance D1-2
- the distance between the injection holes H2 and H4 D 2-4 is larger than either the interval DM or the interval D 1-2 .
- the interval D 2-4 is twice the interval DM . That is, it can be considered that there is a non-injection portion H3 in which no hole is formed at a position where the interval M is between the injection holes H2 and H4.
- the inert gas supply pipe 80c as an inert gas supply line is connected to the inert gas supply nozzle 8c.
- an inert gas supply source (not shown), an on-off valve 96c, a mass flow controller (MFC) 95c as a flow rate control means (flow control), and an on-off valve 94c. Is provided.
- MFC mass flow controller
- an oxygen-containing gas supply nozzle 8a that supplies oxygen-containing gas (oxidizing gas) to the wafer 6 from the side in the reaction chamber 4 penetrates the side wall of the reaction tube 10. It is connected to the.
- the oxygen-containing gas supply nozzle 8a is arranged in a region corresponding to the wafer arrangement region PW, that is, a cylindrical region in the reaction tube 10 facing the wafer arrangement region PW and surrounding the wafer arrangement region PW.
- the oxygen-containing gas supply nozzle 8a is composed of an L-shaped nozzle, and rises in the reaction tube 10 along the inner wall of the side wall of the reaction tube 10.
- the oxygen-containing gas supply nozzle 8a is provided along the inner wall on the side closer to the inner wall of the side wall of the reaction tube 10 than the wafer 6.
- the oxygen-containing gas supply nozzle 8a constitutes a second nozzle.
- oxygen-containing gas at least one of oxygen (O 2 ), ozone (O 3 ), hydrogen peroxide (H 2 O 2 ), nitric oxide (NO), or a mixed gas thereof can be used.
- the upper surface of the tip of the oxygen-containing gas supply nozzle 8a is closed, and a gas injection hole is provided on the side surface of the nozzle tip.
- an arrow extending from the oxygen-containing gas supply nozzle 8a toward the wafer 6 indicates the injection direction of the oxygen-containing gas from each gas injection hole, and the root portion of each arrow indicates each gas injection hole. That is, the gas injection holes face the wafer side, and are configured to inject oxygen-containing gas horizontally (in the direction along the main surface of the wafer) toward the wafer 6 from the side in the reaction chamber 4. There is.
- the wafer 6 has a corresponding injection hole on a one-to-one basis, that is, a corresponding injection hole at the same pitch as the support pitch of the wafer formed on the boat 3.
- the injection holes of the oxygen-containing gas supply nozzle 8a, the hydrogen-containing gas supply nozzles 8b-1, 8b-2, 8b-3 and the inert gas supply nozzle 8c are the center of the wafer 6, that is, the central axis of the reaction tube 10 in the horizontal direction. It can be provided so as to open toward.
- An oxygen-containing gas supply pipe 80a as an oxygen-containing gas supply line is connected to the oxygen-containing gas supply nozzle 8a.
- an oxygen-containing gas supply source not shown
- an on-off valve 96a in order from the upstream side, an oxygen-containing gas supply source (not shown), an on-off valve 96a, a mass flow controller (MFC) 95a as a flow rate control means (flow control), and an on-off valve 94a.
- MFC mass flow controller
- a gas exhaust port 11 for exhausting the processing chamber is provided at the lower side of the reaction tube 10 (below the lower dummy arrangement region SD-U).
- a gas exhaust pipe 50 as a gas exhaust line is connected to the gas exhaust port 11.
- the gas exhaust pipe 50 is provided with an APC (AutoPressure Controller) 51 as a pressure adjusting means (pressure controller) and a vacuum pump 52 as an exhaust means (exhaust device) in order from the upstream side.
- the exhaust system is mainly composed of a gas exhaust port 11, a gas exhaust pipe 50, an APC 51, and a vacuum pump 52.
- Each part of the substrate processing device such as the resistance heating heater 9, the mass flow controller 92, 95a, 95b, 95c, the on-off valve 91, 93, 94a, 94b, 96a, 96b, APC51, the vacuum pump 52, and the rotation mechanism 14 is a control means. It is connected to the controller 100 as a (control unit), and the controller 100 has a hydrogen-containing gas flow rate supplied from the hydrogen-containing gas supply nozzle 8b, an oxygen-containing gas flow rate supplied from the oxygen-containing gas supply nozzle 8a, and a shower plate 12.
- the controller 100 is configured to be able to control the environment and operation of each part of the substrate processing apparatus such as the flow rate of the inert gas to be supplied, the flow rate of the inert gas supplied from the inert gas supply nozzle 8c, the temperature in the reaction tube 10, the pressure, and the like.
- the controller 100 is configured as a computer including a CPU, a memory, a storage device such as an HDD, a display device such as an FPD, and an input device such as a keyboard and a mouse.
- one batch (for example, 100) wafers 6 is transferred (wafer charged) to the wafer arrangement area PW of the boat 3 by the substrate transfer machine. Further, a side dummy substrate SD is placed in the upper dummy arrangement region SD-T and the lower dummy arrangement region SD-U of the boat 3. The side dummy substrate SD has a smaller film formation area per wafer than the wafer 6.
- the boat 3 loaded with the wafer 6 and the side dummy substrate SD is carried (boat loaded) into the reaction chamber 4 of the heat treatment furnace 5 maintained in a heated state by the heater 9, and the inside of the reaction tube 10 is sealed by the seal cap 13. ..
- the inside of the reaction tube 10 is evacuated by the vacuum pump 52, and the pressure inside the reaction tube 10 (pressure inside the furnace) is controlled to be a predetermined processing pressure lower than the atmospheric pressure by the APC 51.
- the rotation mechanism 14 causes the boat 3 to rotate at a predetermined rotation speed. Further, the temperature inside the reaction chamber 4 (inside the furnace temperature) is raised, and the temperature inside the furnace is controlled to be a predetermined processing temperature.
- the inert gas supply nozzles 7 and 8c supply the inert gas into the reaction chamber 4. That is, by opening the on-off valves 91 and 93, the inert gas whose flow rate is controlled by the mass flow controller 92 is supplied into the reaction chamber 4 from the inert gas supply nozzle 7 via the inert gas supply pipe 70.
- the inert gas supplied from the inert gas supply nozzle 7 is supplied in a shower manner into the reaction chamber 4 via the shower plate 12 via the buffer chamber 12a.
- the oxygen-containing gas, the hydrogen-containing gas, and the inert gas are supplied into the reaction chamber 4 from the oxygen-containing gas supply nozzle 8a, the hydrogen-containing gas supply nozzle 8b, and the inert gas supply nozzle 8c, respectively. That is, by opening the on-off valves 94a and 96a, the oxygen-containing gas whose flow rate is controlled by the mass flow controller 95a is supplied into the reaction chamber 4 from the oxygen-containing gas supply nozzle 8a via the oxygen-containing gas supply pipe 80a.
- the hydrogen-containing gas whose flow rate is controlled by the mass flow controller 95b is supplied into the reaction chamber 4 from the hydrogen-containing gas supply nozzle 8b via the hydrogen-containing gas supply pipe 80b.
- the on-off valves 94c and 96c the inert gas whose flow rate is controlled by the mass flow controller 95c is supplied into the reaction chamber 4 from the inert gas supply nozzle 8c via the inert gas supply pipe 80c.
- the oxygen-containing gas supplied from the oxygen-containing gas supply nozzle 8a and the hydrogen-containing gas supplied from the hydrogen-containing gas supply nozzle 8b are introduced into the reaction chamber 4 from a plurality of locations (plural injection holes) in the region corresponding to the wafer arrangement region. Is supplied to.
- the oxygen-containing gas and the hydrogen-containing gas are supplied from the injection holes (discharge holes) corresponding to the wafer arrangement region in the reaction chamber 4 and mixed in the reaction chamber.
- the inert gas is supplied from one end side (ceiling side) corresponding to the wafer arrangement region in the reaction chamber 4, and the lower dummy arrangement region SD- in the reaction chamber 4 below the wafer arrangement region PW. It is also supplied from a plurality of injection holes corresponding to U.
- the oxygen-containing gas and the hydrogen-containing gas supplied into the reaction chamber 4 flow down in the reaction chamber 4 together with the inert gas and are exhausted from the gas exhaust port 11 provided on the bottom opening 4A side of the wafer arrangement region PW.
- the mixture of the oxygen-containing gas and the hydrogen-containing gas ejected from the oxygen-containing gas supply nozzle 8a and the hydrogen-containing gas supply nozzle 8b toward the center of the wafer and the generation of the oxidized species are carried out between the arranged wafers and on the wafer. It can occur in any of the annular spaces between the outer circumference and the reaction tube 10. At this time, the ratio of diffusion and convection in the movement of gas molecules from the edge to the center of the wafer is larger in the oxygen-containing gas than in the hydrogen-containing gas. In other words, the hydrogen-containing gas is easy to diffuse, and even if the injection holes are provided at intervals different from those of the wafer, the concentration difference in the vicinity of the center of the wafer is unlikely to occur.
- the oxygen-containing gas and the hydrogen-containing gas are mixed and reacted in the reduced pressure reaction chamber 4 heated by the heater 5 to produce H 2 O, which are intermediate products of this combustion reaction, H, O, and OH. And other intermediate products also remain at a predetermined equilibrium concentration, in which the concentration of atomic oxygen O is relatively high.
- H 2 O intermediate products of this combustion reaction
- H, O, and OH intermediate products of this combustion reaction
- other intermediate products also remain at a predetermined equilibrium concentration, in which the concentration of atomic oxygen O is relatively high.
- the one that directly contributes to the formation of the oxide film is atomic oxygen O, and the other intermediate products.
- the product, H2O and the raw material gas itself are not dominant in the surface reaction for oxide film growth.
- the atomic oxygen O acts as a reaction species (oxidized species), so that the wafer 6 is oxidized and the wafer 6 is oxidized.
- a silicon oxide film (SiO 2 film) as an oxide film is formed on the surface.
- the concentration of atomic oxygen O is expressed by an upwardly convex function with respect to the supply ratio of the oxygen-containing gas and the hydrogen-containing gas. Whether the ratio is lower or higher than the maximum point, the concentration of atomic oxygen O decreases.
- the technique of this example for adjusting the supply amount from each injection hole of the hydrogen-containing gas supply nozzle 8b can be suitably used in a state of hydrogen deficiency rather than a maximum point. In a hydrogen-deficient state, the oxygen-containing gas itself can be a diluting gas.
- the treatment conditions (oxidation treatment conditions) at this time are as follows. Treatment temperature (treatment room temperature): 500-1000 ° C, Processing pressure (processing chamber pressure): 1 to 500 Pa, Oxygen-containing gas supply flow rate supplied from the oxygen-containing gas supply nozzle 8a: 3.0 to 6.0 slm, Hydrogen-containing gas supply flow rate (total flow rate) supplied from the hydrogen-containing gas supply nozzle 8b: 1500 to 3000 sccm, Inert gas supply flow rate supplied from the inert gas supply nozzle 8c: 1.0 to 1.5 slm, Inert gas supply flow rate supplied from the shower plate 12: 400 to 1000 sccm, Is exemplified, and the wafer 6 is subjected to an oxidation treatment by keeping each treatment condition constant at a certain value within each range.
- the supply of oxygen-containing gas and hydrogen-containing gas to the reaction chamber 4 is stopped, and the reaction tube 10 is vacuumed or purged with an inert gas.
- the residual gas in 10 is removed.
- the pressure inside the furnace is returned to atmospheric pressure, the temperature inside the furnace is lowered to a predetermined temperature, and then the boat 3 supporting the treated wafer 6 is carried out from the reaction chamber 4 (boat unloading) and supported by the boat 3.
- the boat 3 is kept in a predetermined position until all the processed wafers 6 have cooled.
- the processed wafer 6 held in the standby boat 3 is cooled to a predetermined temperature, the processed wafer 6 is collected (wafer discharge) by the substrate transfer machine. In this way, a series of processes for performing an oxidation process on the wafer 6 is completed.
- the side dummy substrate SD is placed on the upper dummy arrangement region SD-T and the lower dummy arrangement region SD-U of the boat 3, the side dummy substrate SD is placed in these regions during the oxide film formation process.
- the consumption of atomic oxygen group is small. Therefore, the flow rate of the hydrogen-containing gas supplied from the hydrogen-containing gas supply nozzle 8b and the flow rate of the inert gas supplied from the inert gas supply nozzle 8c are controlled, and the hydrogen-containing gas concentration in the lower dummy arrangement region SD-U is controlled. Is lower than the hydrogen-containing gas concentration in the wafer arrangement region PW.
- FIG. 4A shows the flow rate of gas from each nozzle supplied to the reaction tube 10 and the concentration distribution of atomic oxygen
- FIG. 4B shows the film thickness (vertical axis) at the support position #N (horizontal axis).
- Axis) graph is shown. These were obtained by simulation of the reaction tube 10 under the conditions of a processing pressure of 55 Pa and a temperature of 850 ° C.
- the inert gas is injected 1.2 slm from the injection holes H1 and H2
- the hydrogen-containing gas is 200 sccm from the injection holes H4
- the hydrogen-containing gas is 135 sccm from the injection holes H5
- the hydrogen-containing gas is 100 sccm each from the injection holes H6 to H10.
- a total of 570 sccm of hydrogen-containing gas was injected from the holes H11 to H15, a total of 400 sccm of hydrogen-containing gas was injected from the injection holes H16 to H20, and 600 sccm of inert gas was injected from the shower plate 12.
- a total of 5.0 slm of oxygen-containing gas was injected from the oxygen-containing gas supply nozzle 8a.
- the atomic oxygen concentration in the reaction tube is almost uniform in the wafer arrangement region PW, and the difference at the boundary portion with the wafer arrangement region PW is small.
- the concentration is high in the lower dummy arrangement region SD-U, which consumes less atomic oxygen, but the inert gas injected by the inert gas supply nozzle 8c causes the lower dummy arrangement region SD-U to move to the wafer arrangement region PW.
- the diffusion of the atomic oxygen component of is suppressed.
- the film thickness of the formed oxide film is also within ⁇ 0.6% in the entire support position.
- the side dummy substrate SD is loaded in the upper dummy arrangement region SD-T, but as shown in FIG. 5, the wafer 6 is top-packed and the side dummy substrate SD is not arranged. good. In this case, the upper dummy arrangement area SD-T disappears, and the end portion on the ceiling 4B side becomes the wafer arrangement area PW.
- the heat insulating member DP is used, which is different from the first embodiment, and other configurations are the same as those in the first embodiment.
- the side dummy substrate SD arranged in the lower dummy arrangement region SD-U is covered with the heat insulating member DP.
- a quartz plate can be used as the heat insulating member.
- the heat insulating member DP has a disc-shaped portion DP1 that covers the plate surface of the side dummy substrate SD, and a cylindrical portion P2 that is connected to the lower side of the disc-shaped portion DP1.
- FIG. 7 shows the distribution of the atomic oxygen concentration in the vicinity of the lower dummy sequence region SD-U during the oxide film forming process in shades. The darker the gray scale, the higher the atomic oxygen concentration.
- FIG. 7A is a case where the heat insulating member DP is arranged, and FIG. 7B is a case where the heat insulating member DP is not arranged.
- FIG. 7A2 shows the variation in the film thickness when the heat insulating member DP is arranged
- FIG. 7B2 shows the variation in the film thickness when the heat insulating member DP is not arranged.
- the diffusion of the atomic oxygen component from the lower dummy arrangement region SD-U to the wafer arrangement region PW is suppressed.
- the variation in the film thickness of the oxide film formed on the wafer 6 is ⁇ 0.4% when the heat insulating member DP is arranged, which is more suppressed than ⁇ 0.9% when the heat insulating member DP is not arranged. There is.
- the heat insulating plate may be covered with the heat insulating member DP instead of the side dummy board SD. That is, the heat insulating plate may be arranged in the lower dummy arrangement region SD-U, and the heat insulating plate may be covered with the heat insulating member DP.
- the third embodiment a case where the product wafer 6 mounted on the boat 3 is relatively small and the fill dummy substrate FD is used will be described.
- the apparatus configuration of the substrate processing apparatus S, the heat treatment furnace 5, the reaction tube 10, various gas supply nozzles, and the like is the same as that of the first embodiment.
- This embodiment is a case where an arbitrary number of product wafers 6 in a relatively small lot is processed in one batch, for example, a case where 25 wafers, 50 wafers, and 75 wafers are processed.
- FIG. 8 shows the arrangement of the side dummy substrate SD, the wafer 6 (product wafer), and the fill dummy substrate FD in the reaction tube 10.
- Wafer 6 is arranged in the wafer arrangement area PW so as to be packed on the ceiling side.
- a large area dummy LAD is arranged on the bottom opening 4A side of the wafer 6 group.
- the large area dummy LAD is a dummy substrate having a surface area of about 1.5 times (1.2 times to 1.8 times) that of the product wafer 6.
- About 10 large area dummy LADs are arranged in the boat 3.
- the fill dummy substrate FD is arranged between the large area dummy LAD group and the side dummy substrate SD arranged in the lower dummy arrangement region SD-U.
- the fill dummy substrate FD fills the space where the wafer 6 of the boat 3 is not placed.
- the influence of the surplus atomic oxygen component in the region on the fill dummy substrate FD side is suppressed. be able to.
- FIG. 9 shows arrangements for processing 25 wafers (A), 50 wafers (B), and 75 wafers (C), respectively.
- the left side of FIG. 8 is the ceiling 4B side of the reaction tube 10, and the right side is the bottom opening 4A side.
- FIG. 9 shows a graph of the film thickness (vertical axis) at the support position #N (horizontal axis) when the film formation process is performed by arranging in this way. The film thickness distribution is suppressed to within ⁇ 1.0% regardless of the number of 6 product wafers.
- the reaction tube 10 does not have a configuration for supplying the inert gas to the ceiling 4B side. Further, the injection hole of the oxygen-containing gas supply nozzle 8a is not provided in the portion corresponding to the upper dummy arrangement region SD-T.
- the hydrogen-containing gas is supplied and the oxygen-containing gas is not supplied toward the upper dummy arrangement region SD-T.
- the oxygen-containing gas concentration in the upper dummy sequence region SD-T is lowered, and the hydrogen-rich state is obtained with respect to the above-mentioned maximum point, and the atomic oxygen concentration can be effectively lowered.
- the upper dummy arrangement region is affected by the properties of the H 2 gas that easily diffuses in the hydrogen-deficient state where the film formation rate is regulated by the hydrogen-containing gas supply amount. Even if the hydrogen-containing gas is not locally supplied to the SD-T or the supply amount of the oxygen-containing gas is doubled, the atomic oxygen concentration can hardly be lowered.
- the influence of the surplus atomic oxygen component on the wafer 6 can be reduced by the relative decrease in the atomic oxygen concentration. Therefore, the film thickness distribution can be reduced to improve the loading effect.
- This embodiment can be suitably used when the height of the upper dummy arrangement region SD-T does not change even if the number of processed wafers changes.
- the above-mentioned embodiments and modifications 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 procedures and processing conditions in the above-described aspects and modifications.
- the technique of the present disclosure can be suitably applied to the oxidation of silicon-based substrates such as Si, SiC, and SiGe, and can be widely applied to the deposition of films requiring an oxidation raw material such as a metal oxide film.
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Abstract
Description
以下、本開示の第1実施形態を、図面を参照して説明する。なお、以下の説明において用いられる図面は、いずれも模式的なものであり、図面に示される、各要素の寸法の関係、各要素の比率等は、現実のものとは必ずしも一致していない。また、複数の図面の相互間においても、各要素の寸法の関係、各要素の比率等は必ずしも一致していない。
処理温度(処理室内温度):500~1000℃、
処理圧力(処理室内圧力):1~500Pa、
酸素含有ガス供給ノズル8aから供給する酸素含有ガス供給流量:3.0~6.0slm、
水素含有ガス供給ノズル8bから供給する水素含有ガス供給流量(合計流量):1500~3000sccm、
不活性ガス供給ノズル8cから供給する不活性ガス供給流量:1.0~1.5slm、
シャワー板12から供給する不活性ガス供給流量:400~1000sccm、
が例示され、それぞれの処理条件を、それぞれの範囲内のある値で一定に維持することでウエハ6に酸化処理がなされる。
次に第2実施形態について説明する。本実施形態では、断熱部材DPを用いる点が第1実施形態と異なり、その他の構成については第1実施形態と同一である。
次に第3実施形態について説明する。本実施形態では、ボート3に載置する製品ウエハ6が比較的少なく、フィルダミー基板FDを用いる場合について説明する。基板処理装置Sや熱処理炉5、反応管10、各種のガス供給ノズル等の装置構成については、第1実施形態と同一である。
次に第4実施形態について説明する。本実施形態では、図10に示されるように、反応管10の天井4B側に、不活性ガスを供給する構成を有していない。また、酸素含有ガス供給ノズル8aの噴射孔は、上ダミー配列領域SD-Tに対応する部分には設けられていない。
6 ウエハ(基板)
4A 底開口
4B 天井
10 反応管
8a 酸素含有ガス供給ノズル(第2ノズル)
8b 水素含有ガス供給ノズル(第1ノズル)
8c 不活性ガス供給ノズル(第3ノズル)
PW ウエハ配列領域(第1領域)
SD-U 下ダミー配列領域(第2領域)
SD-T 上ダミー配列領域(第3領域)
SD サイドダミー基板(ダミー基板)
11 ガス排気口(排気口)
100 コントローラ(制御部)
8b-1、8b-2、8b-3b水素含有ガス供給ノズル(多孔ノズル)
Claims (17)
- 複数枚の基板が出し入れされる底開口を有し、前記複数枚の基板を処理する反応管と、
前記反応管内で前記複数枚の基板を配列させて基板配列領域に保持する保持具と、
前記基板配列領域の内、複数の製品基板が配列される第1領域に対応して配置され、該第1領域に対応する複数箇所から前記反応管内に水素含有ガスを供給する第1ノズルと、
前記第1領域に対応して配置され、該第1領域に対応する位置から前記反応管内に酸素含有ガスを供給する第2ノズルと、
前記第1領域よりも前記底開口側で、前記保持具に保持されたダミー基板もしくは断熱体が配列される第2領域に対応して配置され、該第2領域に対応する位置から前記反応管内に希釈ガスを供給する第3ノズルと、
前記反応管内を排気する排気口と、
前記第2領域の前記水素含有ガスの濃度が前記第1領域よりも低くなるように、前記第1ノズルから供給される前記水素含有ガスと前記第3ノズルから供給される前記希釈ガスの供給を制御可能に構成された制御部と、を有し、
前記第1ノズルは、前記第1領域を含み前記第2領域を含まない領域を基板の配列方向で分割した分割領域に対応する噴射孔を有する複数本の多孔ノズルにより構成される、
基板処理装置。 - 前記第3ノズルの上端の噴射孔と、前記第1ノズルの下端の噴射孔との高さ方向の間隔は、前記第1ノズルの互いに隣接する噴射孔の間隔のいずれよりも大きい、
請求項1に記載の基板処理装置。 - 前記反応管は、前記底開口と反対側の閉鎖端である天井に設けられ、前記反応管内に不活性ガスを供給する天井ガス供給部、を有する、
請求項1または請求項2に記載の基板処理装置。 - 前記複数本の多孔ノズルの内、最も前記底開口側の噴射孔を有する多孔ノズルの噴射孔は、前記反応管の天井側よりも前記底開口に向かって単位長さ当たりの吐出量が単調に増加するような開口もしくは間隔を有する、
請求項1~請求項3のいずれか1項に記載の基板処理装置。 - 前記反応管の天井側から前記反応管内に希釈ガスを供給するガス供給口、
を更に備え、
前記排気口は、前記第1領域よりも下方に設けられる請求項1~請求項4のいずれか1項に記載の基板処理装置。 - 前記分割領域は、その中に25枚若しくはその倍数の基板が配列されるように分割される、請求項1~請求項5のいずれか1項に記載の基板処理装置。
- 前記第2領域の複数の前記ダミー基板もしくは断熱体を纏めて覆うカバー、を更に備えた、請求項1~請求項6のいずれか1項に記載の基板処理装置。
- 前記希釈ガスは、不活性ガス若しくは酸素含有ガスである、
請求項1~請求項7のいずれか1項に記載の基板処理装置。 - 前記基板の縁から中心に向かうガス分子の移動おける、拡散と対流の割合は、酸素含有ガスの方が、水素含有ガスに比べて対流の割合が大きくなるように、前記第1ノズル及び前記第2ノズルの噴射孔が構成される、
請求項1~請求項8のいずれか1項に記載の基板処理装置。 - 前記第1ノズルの噴射孔および前記第2ノズルの噴射孔の少なくとも一方は、基板に対して平行な方向に開口する、
請求項1~請求項9のいずれか1項に記載の基板処理装置。 - 前記第1ノズルの噴射孔および前記第2ノズルの噴射孔の少なくとも一方は、基板に中心に向かって開口する、
請求項1~請求項9のいずれか1項に記載の基板処理装置。 - 前記第1ノズルの噴射孔の数は、前記第2ノズルの噴射孔の数よりも少ない、
請求項1~請求項9のいずれか1項に記載の基板処理装置。 - 前記第2ノズルの噴射孔は、少なくとも、前記第1領域に配置される前記複数の製品基板のそれぞれに対応して設けられる、
請求項1~請求項9のいずれか1項に記載の基板処理装置。 - 前記第2ノズルは、前記第1領域に配列される製品基板に1対1で対応する噴射孔を有し、
前記噴射孔は、前記基板配列領域内の最も前記天井側で複数のダミー基板が配列される第3領域に対応して配置されず、
前記第1ノズルの噴射孔は前記第3領域に対応して配置される、
請求項3または請求項9に記載の、基板処理装置。 - 複数枚の基板を底開口から反応管内へ搬入し、基板配列領域に保持する工程と、
前記基板配列領域の内、複数の製品基板が配列される第1領域に少なくとも対応して配置された第1ノズルから該第1領域に対応する複数箇所から前記反応管内に水素含有ガスを供給し、前記第1領域に対応して配置された第2ノズルから該第1領域に対応する位置から前記反応管内に酸素含有ガスを供給し、前記第1領域よりも前記底開口側でダミー基板もしくは断熱体が配列される第2領域に対応して配置された第3ノズルから該第2領域に対応する位置から前記反応管内に希釈ガスを供給し、基板を処理する工程と、
を有し、
前記基板を処理する工程では、前記第2領域の前記水素含有ガスの濃度を、前記第1領域よりも低くなるように、前記第1ノズルから供給する前記水素含有ガスと前記第3ノズルから供給する前記希釈ガスの供給を制御し、
前記第1領域を含み前記第2領域を含まない領域を分割した分割領域に対応する噴射孔を有する複数本の多孔ノズルにより構成される前記第1ノズルから、前記水素含有ガスを供給する、
半導体装置の製造方法。 - 複数枚の基板を底開口から反応管内へ搬入し、基板配列領域に保持する工程と、
前記基板配列領域の内、複数の製品基板が配列される第1領域に少なくとも対応して配置された第1ノズルから該第1領域に対応する複数箇所から前記反応管内に水素含有ガスを供給し、前記第1領域に対応して配置された第2ノズルから該第1領域に対応する位置から前記反応管内に酸素含有ガスを供給し、前記第1領域よりも前記底開口側でダミー基板もしくは断熱体が配列される第2領域に対応して配置された第3ノズルから該第2領域に対応する位置から前記反応管内に希釈ガスを供給し、基板を処理する工程と、
を有し、
前記基板を処理する工程では、前記第2領域の前記水素含有ガスの濃度を、前記第1領域よりも低くなるように、前記第1ノズルから供給する前記水素含有ガスと前記第3ノズルから供給する前記希釈ガスの供給を制御し、
前記第1領域を含み前記第2領域を含まない領域を分割した分割領域に対応する噴射孔を有する複数本の多孔ノズルにより構成される前記第1ノズルから、前記水素含有ガスを供給する、
基板処理方法。 - 複数枚の基板を底開口から反応管内へ搬入し、基板配列領域に保持する手順と、
前記基板配列領域の内、複数の製品基板が配列される第1領域に少なくとも対応して配置された第1ノズルから該第1領域に対応する複数箇所から前記反応管内に水素含有ガスを供給し、前記第1領域に対応して配置された第2ノズルから該第1領域に対応する位置から前記反応管内に酸素含有ガスを供給し、前記第1領域よりも前記底開口側でダミー基板もしくは断熱体が配列される第2領域に対応して配置された第3ノズルから該第2領域に対応する位置から前記反応管内に希釈ガスを供給し、基板を処理する手順と、
を有し、
前記基板を処理する手順では、前記第2領域の前記水素含有ガスの濃度を、前記第1領域よりも低くなるように、前記第1ノズルから供給する前記水素含有ガスと前記第3ノズルから供給する前記希釈ガスの供給を制御し、
前記第1領域を含み前記第2領域を含まない領域を分割した分割領域に対応する噴射孔を有する複数本の多孔ノズルにより構成される前記第1ノズルから、前記水素含有ガスを供給する、
ように、コンピュータにより基板処理装置に実行させるプログラム。
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