WO2013073886A1 - 위상차를 갖는 반응가스를 공급하는 기판 처리 장치 - Google Patents
위상차를 갖는 반응가스를 공급하는 기판 처리 장치 Download PDFInfo
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- WO2013073886A1 WO2013073886A1 PCT/KR2012/009723 KR2012009723W WO2013073886A1 WO 2013073886 A1 WO2013073886 A1 WO 2013073886A1 KR 2012009723 W KR2012009723 W KR 2012009723W WO 2013073886 A1 WO2013073886 A1 WO 2013073886A1
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- supply
- substrate
- reaction
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- nozzles
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- 239000012495 reaction gas Substances 0.000 title claims abstract description 68
- 238000006243 chemical reaction Methods 0.000 claims abstract description 122
- 238000000034 method Methods 0.000 claims abstract description 115
- 239000007789 gas Substances 0.000 claims abstract description 55
- 239000006227 byproduct Substances 0.000 claims description 19
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- 239000007924 injection Substances 0.000 claims description 5
- 238000000638 solvent extraction Methods 0.000 claims 1
- 230000037361 pathway Effects 0.000 abstract 1
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- 238000000151 deposition Methods 0.000 description 11
- 230000008021 deposition Effects 0.000 description 11
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- 229910052710 silicon Inorganic materials 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 238000005530 etching Methods 0.000 description 8
- 239000010703 silicon Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000007795 chemical reaction product Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
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- 238000010586 diagram Methods 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- 229910003902 SiCl 4 Inorganic materials 0.000 description 2
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- SLLGVCUQYRMELA-UHFFFAOYSA-N chlorosilicon Chemical compound Cl[Si] SLLGVCUQYRMELA-UHFFFAOYSA-N 0.000 description 2
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- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
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- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- ZOCHARZZJNPSEU-UHFFFAOYSA-N diboron Chemical compound B#B ZOCHARZZJNPSEU-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
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- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
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- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
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- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
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Images
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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
- H01L21/20—Deposition of semiconductor materials on a substrate, e.g. epitaxial growth solid phase epitaxy
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/4412—Details relating to the exhausts, e.g. pumps, filters, scrubbers, particle traps
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- 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
- H01L21/67063—Apparatus for fluid treatment for etching
- H01L21/67069—Apparatus for fluid treatment for etching for drying etching
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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
- H01L21/67109—Apparatus for thermal treatment mainly by convection
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45517—Confinement of gases to vicinity of substrate
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45563—Gas nozzles
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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
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B35/00—Apparatus not otherwise provided for, specially adapted for the growth, production or after-treatment of single crystals or of a homogeneous polycrystalline material with defined structure
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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
- H01L21/67—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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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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
- H01L21/677—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 conveying, e.g. between different workstations
- H01L21/67739—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 conveying, e.g. between different workstations into and out of processing chamber
- H01L21/67757—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 conveying, e.g. between different workstations into and out of processing chamber vertical transfer of a batch of workpieces
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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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02524—Group 14 semiconducting materials
- H01L21/02532—Silicon, silicon germanium, germanium
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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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/0262—Reduction or decomposition of gaseous compounds, e.g. CVD
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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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02656—Special treatments
- H01L21/02658—Pretreatments
- H01L21/02661—In-situ cleaning
Definitions
- the present invention relates to a substrate processing apparatus, and more particularly, to a substrate processing apparatus capable of supplying a reaction gas having a phase difference according to height.
- a selective epitaxy process involves deposition reactions and etching reactions. Deposition and etching reactions occur simultaneously at relatively different reaction rates for the polycrystalline and epitaxial layers.
- an epitaxial layer is formed on the single crystal surface while the existing polycrystalline and / or amorphous layer is deposited on at least one second layer.
- the deposited polycrystalline layer is generally etched at a faster rate than the epitaxial layer.
- a net selective process results in the deposition of epitaxy material and the deposition of limited or unrestricted polycrystalline material.
- a selective epitaxy process can result in the formation of an epilayer of silicon containing material on the single crystal silicon surface without deposits remaining on the spacers.
- Selective epitaxy processes generally have some disadvantages. To maintain selectivity during this epitaxy process, the chemical concentration and reaction temperature of the precursor must be adjusted and adjusted throughout the deposition process. If not enough silicon precursor is supplied, the etching reaction is activated, which slows down the overall process. In addition, harm can occur to the etching of substrate features. If not enough corrosion precursor is supplied, the deposition reaction may reduce the selectivity of forming single and polycrystalline materials across the substrate surface. In addition, conventional selective epitaxy processes generally require high reaction temperatures, such as about 800 ° C., about 1,000 ° C., or higher. Such high temperatures are undesirable during the manufacturing process due to possible uncontrolled nitriding reactions and thermal budgets on the substrate surface.
- An object of the present invention is to provide a substrate processing apparatus capable of forming a uniform flow of reaction gas in the process space.
- Another object of the present invention is to provide a substrate processing apparatus capable of forming a flow of reaction gas having a phase difference according to height.
- Still another object of the present invention is to provide a substrate processing apparatus capable of intensively providing a reaction gas to a substrate.
- a substrate processing apparatus in which a process is performed on a substrate may include: a lower chamber in which an upper portion thereof is opened and a passage through which the substrate enters and exits is formed; An external reaction tube closing the open upper portion of the lower chamber and providing a process space in which the process is performed; A substrate holder in which at least one substrate is stacked in a vertical direction, the substrate holder being switchable to a loading position at which the substrate is loaded in the substrate holder and a process position at which the process is performed on the substrate; And a gas supply unit installed inside the external reaction tube to supply a reaction gas toward the process space and to form a flow of the reaction gas having different phase differences in the vertical direction.
- the gas supply unit includes: a plurality of supply nozzles disposed along an inner wall of the external reaction tube and disposed at different heights to discharge the reaction gas; A plurality of supply pipes connected to the supply nozzles to supply the reaction gas to the supply nozzles, respectively; A plurality of exhaust nozzles disposed along an inner wall of the outer reaction tube and disposed at different heights to suck unreacted gas and reaction byproducts in the process space; And a plurality of exhaust pipes connected to the exhaust nozzles, respectively, through which the unreacted gas and the reaction by-products sucked through the exhaust nozzles respectively pass.
- the supply nozzles and the exhaust nozzles may be arranged to correspond to the positions of the substrates loaded on the substrate holder when the substrate holder is in the process position.
- Each of the supply nozzles is a circular tube having a supply hole of a circular cross section through which the reaction gas is discharged, and each of the exhaust nozzles is formed at an end with an inner space having a reduced cross-sectional area along a suction direction, and the unreacted gas and It has an exhaust port of the slot-shaped cross-section to suck the reaction by-product, the center of each of the supply port and the center of the exhaust port for the same height can be arranged to be symmetrical with each other.
- Each of the supply nozzles has an internal space in which the cross-sectional area increases along the discharge direction, and a supply port of a slot-shaped cross section formed at a tip thereof to discharge the reaction gas, and each of the exhaust nozzles has a reduced cross-sectional area along the suction direction. And an inner space formed at the front end, and having an exhaust port of a slot-shaped cross section which sucks the unreacted gas and the reaction by-product, and the center of each of the supply ports and the center of the exhaust port are symmetrical with respect to the same height. Can be.
- Each of the supply nozzles has an internal space having an increased cross-sectional area along a discharge direction, a supply port of a slot-shaped cross section formed at a tip thereof, and having the reaction gas discharged therein, and a plurality of injection holes provided on the supply port.
- Each exhaust nozzle has an internal space having a reduced cross-sectional area along the suction direction, and an exhaust port of a slot-shaped cross-section formed at the front end to suck the unreacted gas and the reaction by-product, with respect to the same height
- the center of each supply port and the center of the exhaust port may be arranged to be symmetrical to each other.
- the gas supply unit may further include a plurality of supply lines connected to the supply nozzles to supply the reaction gas to the supply nozzles, respectively.
- the substrate processing apparatus may further include a support flange installed between the lower chamber and the external reaction tube, and the supply lines may be connected to the supply nozzles through the support flange, respectively.
- the substrate processing apparatus further includes an inner reaction tube disposed inside the outer reaction tube and disposed around the substrate holder placed at the process position to define a reaction region for the substrate, wherein each of the supply A sphere and the exhaust port may be located inside the inner reaction tube.
- the substrate processing apparatus may further include a thermocouple installed in the outer reaction tube and disposed in a vertical direction.
- the substrate processing apparatus may further include a rotating shaft connected to the substrate holder and rotating in a predetermined direction during the process.
- the flow of the reaction gas may be uniformly formed in the process space.
- the reaction gas may be provided intensively with respect to the substrate.
- FIG. 1 is a view schematically showing a semiconductor manufacturing apparatus according to an embodiment of the present invention.
- FIG. 2 is a view showing a substrate processed according to an embodiment of the present invention.
- FIG. 3 is a flow diagram illustrating a method of forming an epitaxial layer in accordance with one embodiment of the present invention.
- FIG. 4 is a diagram schematically showing the epitaxial device shown in FIG. 1.
- FIG. 5 is a cross-sectional view illustrating the lower chamber and the substrate holder illustrated in FIG. 1.
- FIG. 6 is a cross-sectional view schematically illustrating the external reaction tube, the internal reaction tube, the supply nozzles, and the exhaust nozzles shown in FIG. 1.
- FIG. 7 is a cross-sectional view illustrating an arrangement of supply nozzles and an arrangement of thermocouples illustrated in FIG. 1.
- FIG. 8 is a cross-sectional view illustrating an arrangement of exhaust nozzles and an arrangement of thermocouples illustrated in FIG. 1.
- FIG. 9 is a view illustrating supply lines respectively connected to the supply nozzles shown in FIG. 1.
- FIG. 10 is a view showing the flow of the reaction gas in the inner reaction tube shown in FIG.
- FIG. 11 is a view showing a state in which the substrate holder shown in FIG. 1 is switched to a process position.
- FIG. 12 is a perspective view schematically showing a modified embodiment of the supply nozzles shown in FIG.
- FIG. 13 is a perspective view illustrating the supply nozzle shown in FIG. 12.
- FIG. 14 is a cross-sectional view illustrating the supply nozzle shown in FIG. 12.
- FIG. 15 is a view illustrating a flow of a reaction gas through the supply nozzles and the exhaust nozzles shown in FIG. 12.
- FIG. 16 is a perspective view schematically showing a modified embodiment of the supply nozzle shown in FIG. 13.
- FIG. 17 is a cross-sectional view illustrating the supply nozzle shown in FIG. 16.
- the epitaxial process will be described as an example, but the present invention can be applied to various semiconductor manufacturing processes including the epitaxial process.
- the semiconductor manufacturing facility 1 includes a process facility 2, an Equipment Front End Module (EFEM) 3, and an interface wall 4.
- the facility front end module 3 is mounted in front of the process facility 2 to transfer the wafer W between the vessel (not shown) containing the substrates S and the process facility 2.
- the facility front end module 3 has a plurality of loadports 60 and a frame 50.
- the frame 50 is located between the load port 60 and the process equipment 2.
- the container containing the substrate S is placed on the load port 60 by a transfer means (not shown), such as an overhead transfer, an overhead conveyor, or an automatic guided vehicle. Is placed on.
- the container may be a closed container such as a front open unified pod (FOUP).
- a frame robot 70 for transferring the substrate S between the vessel placed in the load port 60 and the process facility 2 is installed.
- a door opener (not shown) for automatically opening and closing the door of the container may be installed.
- the frame 50 may be provided with a fan filter unit (FFU) (not shown) for supplying clean air into the frame 50 so that clean air flows from the top to the bottom in the frame 50. .
- FFU fan filter unit
- the substrate S is subjected to a predetermined process in the process facility 2.
- the process facility 2 includes a transfer chamber 102, a loadlock chamber 106, cleaning chambers 108a and 108b, a buffer chamber 110, and An epitaxial chamber (or epitaxial device) 112a, 112b, 112c.
- the transfer chamber 102 has a generally polygonal shape when viewed from the top, and includes a load lock chamber 106, cleaning chambers 108a and 108b, a buffer chamber 110, and epitaxial chambers 112a, 112b and 112c. Is installed on the side of the transfer chamber 102.
- the loadlock chamber 106 is located on the side adjacent to the facility front end module 3 of the sides of the transfer chamber 102.
- the substrate S is temporarily stayed in the load lock chamber 106 and then loaded into the process equipment 2 to perform a process. After the process is completed, the substrate S is unloaded from the process equipment 2 to load the chamber. Temporarily stay within 106.
- the transfer chamber 102, the cleaning chambers 108a, 108b, the buffer chamber 110, and the epitaxial chambers 112a, 112b, 112c are maintained in vacuum, and the loadlock chamber 106 is switched to vacuum and atmospheric pressure. .
- the loadlock chamber 106 prevents foreign contaminants from entering the transfer chamber 102, the cleaning chambers 108a, 108b, the buffer chamber 110, and the epitaxial chambers 112a, 112b, 112c. In addition, since the substrate S is not exposed to the atmosphere during the transfer of the substrate S, it is possible to prevent the oxide film from growing on the substrate S.
- FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
- a gate valve (not shown) is installed between the load lock chamber 106 and the transfer chamber 102 and between the load lock chamber 106 and the facility front end module 3.
- the gate valve provided between the load lock chamber 106 and the transfer chamber 102 is closed and the load lock chamber 106 is closed.
- the gate valve provided between the load lock chamber 106 and the facility front end module 3 is closed.
- the transfer chamber 102 has a substrate handler 104.
- the substrate handler 104 transfers the substrate S between the loadlock chamber 106, the cleaning chambers 108a and 108b, the buffer chamber 110, and the epitaxial chambers 112a, 112b and 112c.
- the transfer chamber 102 is sealed to maintain a vacuum as the substrate S moves. Maintaining the vacuum is to prevent the substrate S from being exposed to contaminants (eg, O 2, particulate matter, etc.).
- Epitaxial chambers 112a, 112b and 112c are provided to form an epitaxial layer on the substrate S. As shown in FIG. In this embodiment, three epitaxial chambers 112a, 112b, 112c are provided. Since the epitaxial process takes more time than the cleaning process, it is possible to improve the manufacturing yield through a plurality of epitaxial chambers. Unlike the present embodiment, four or more or two or less epitaxial chambers may be provided.
- the cleaning chambers 108a and 108b are provided for cleaning the substrate S before the epitaxial process for the substrate S is performed in the epitaxial chambers 112a, 112b and 112c.
- the amount of oxide present on the crystalline substrate must be minimized. If the surface oxygen content of the substrate is too high, the epitaxial process is adversely affected since oxygen atoms interfere with the crystallographic placement of the deposition material on the seed substrate. For example, during silicon epitaxial deposition, excess oxygen on the crystalline substrate may cause silicon atoms to be displaced from their epitaxial position by clusters of oxygen atoms in atomic units. This local atomic displacement can cause errors in subsequent atomic arrangements as the layer grows thicker.
- Oxygenation of the substrate surface may occur, for example, when the substrate is exposed to the atmosphere when transported. Therefore, a cleaning process for removing a native oxide (or surface oxide) formed on the substrate S may be performed in the cleaning chambers 108a and 108b.
- the cleaning process is a dry etching process using hydrogen (H * ) and NF 3 gas in the radical state.
- H * hydrogen
- NF 3 gas NF 3 gas
- a reactive gas such as radical (H * ) of hydrogen gas and a fluoride gas (for example, nitrogen fluoride (NF 3 ))
- a fluoride gas for example, nitrogen fluoride (NF 3 )
- H * radical
- NF 3 nitrogen fluoride
- An intermediate product is produced, such as x F y (x, y being any integer).
- the intermediate product is highly reactive with the silicon oxide film (SiO 2 ), when the intermediate product reaches the surface of the silicon substrate, the intermediate product selectively reacts with the silicon oxide film to react with the reaction product ((NH 4 ) 2 SiF 6 ) Is generated.
- the reaction product is pyrolyzed to form a pyrolysis gas and evaporates as shown in the following Reaction Formula (3), and as a result, the silicon oxide film can be removed from the surface of the substrate.
- the pyrolysis gas includes a gas containing fluorine, such as HF gas or SiF 4 gas.
- the cleaning process includes a reaction process for producing a reaction product and a heating process for pyrolyzing the reaction product, and the reaction process and the heating process are performed together in the cleaning chambers 108a and 108b or the cleaning chambers 108a and 108b.
- the reaction process may be carried out in any one of the C) and the heating process may be performed in the other one of the cleaning chambers 108a and 108b.
- the buffer chamber 110 provides a space in which the substrate S on which the cleaning process is completed is loaded and a space in which the substrate S in which the epitaxial process is performed is loaded.
- the substrate S moves to the buffer chamber 110 and is loaded into the buffer chamber 110 before being transferred to the epitaxial chambers 112a, 112b and 112c.
- the epitaxial chambers 112a, 112b and 112c may be batch types in which a single process for a plurality of substrates is performed.
- the substrate S having the epitaxial process is sequentially loaded in the buffer chamber 110, and the substrate S having the cleaning process completed is sequentially loaded in the epitaxial chambers 112a, 112b and 112c.
- the substrate S may be loaded in the buffer chamber 110 in the longitudinal direction.
- FIG. 2 is a view showing a substrate processed according to an embodiment of the present invention.
- the cleaning process for the substrate S is performed in the cleaning chambers 108a and 108b before the epitaxial process for the substrate S is performed, and the surface of the substrate 70 is cleaned through the cleaning process.
- the oxide film 72 formed on it can be removed.
- the oxide film may be removed through a cleaning process in the cleaning chambers 108a and 108b.
- An epitaxial surface 74 may be exposed on the surface of the substrate 70 through a cleaning process, thereby helping to grow the epitaxial layer.
- an epitaxial process is performed on the substrate S in the epitaxial chambers 112a, 112b, and 112c.
- the epitaxial process can be accomplished by chemical vapor deposition and can form the epitaxy layer 76 on the epitaxy surface 74.
- the epitaxial surface 74 of the substrate 70 includes a reaction comprising silicon gas (eg, SiCl 4, SiHCl 3, SiH 2 Cl 2, SiH 3 Cl, Si 2 H 6, or SiH 4) and a carrier gas (eg, N 2 and / or H 2). May be exposed to gas.
- the silicon containing gas may be a dopant containing gas (eg, arsine (AsH 3 ), phosphine (PH 3 ), and / or diborane ( B 2 H 6 )).
- a dopant containing gas eg, arsine (AsH 3 ), phosphine (PH 3 ), and / or diborane ( B 2 H 6 )
- step S20 the substrate S moves to the cleaning chambers 108a, 108b before the epitaxial process, and the substrate handler 104 transfers the substrate S to the cleaning chambers 108a, 108b.
- the transfer is through a transfer chamber 102 which is maintained in vacuum.
- step S30 a cleaning process for the substrate S is performed.
- the cleaning process includes a reaction process for producing a reaction product and a heating process for pyrolyzing the reaction product.
- the reaction process and the heating process may be performed together in the cleaning chambers 108a and 108b, or the reaction process may be performed in one of the cleaning chambers 108a and 108b and the heating process may be performed in the other of the cleaning chambers 108a and 108b. Can be.
- step S40 the substrate S having the cleaning process completed is transferred to the buffer chamber 110, loaded in the buffer chamber 110, and waits for an epitaxial process in the buffer chamber 110.
- step S50 the substrate S is transferred to the epitaxial chambers 112a, 112b, 112c, and the transfer is performed through the transfer chamber 102 maintained in vacuum.
- An epitaxial layer may be formed on the substrate S in step S60.
- the substrate S is transferred to the buffer chamber 110 again in step S70 and loaded into the buffer chamber 110, and the process ends in step S80.
- FIG. 4 is a view schematically showing the epitaxial device shown in FIG. 1
- FIG. 5 is a cross-sectional view showing the lower chamber and the substrate holder shown in FIG. 1.
- the epitaxial device (or epitaxial chamber) includes a lower chamber 312b having an open top shape, and the lower chamber 312b is connected to the transfer chamber 102.
- the lower chamber 312b has a passage 319 connected to the transfer chamber 102, and the substrate S may be loaded from the transfer chamber 102 into the lower chamber 312b through the passage 319.
- the gate valve (not shown) is installed outside the passage 319, and the passage 319 may be opened and closed by the gate valve.
- the epitaxial device includes a substrate holder 328 on which a plurality of substrates S are loaded, and the substrates S are loaded on the substrate holder 328 in a vertical direction.
- the substrate holder 328 may load 15 substrates S. While the substrate holder 328 is located in a loading space provided inside the lower chamber 312b (or 'loading position'), the substrate S may be loaded in the substrate holder 328.
- the substrate holder 328 is liftable, and when the substrate S is loaded on the slot of the substrate holder 328, the substrate holder 328 is raised to raise the substrate on the next slot of the substrate holder 328. (S) can be loaded.
- the substrate holder 328 moves into the interior of the external reaction tube 312a (or 'process position'), and epitaxially processes the interior of the external reaction tube 312a. This is going on.
- the heat blocking plate 316 is installed below the substrate holder 328, and is elevated together with the substrate holder 328. When the substrate holder 328 is switched to the process position, as shown in FIG. 11, the heat blocking plate 316 closes the open lower portion of the internal reaction tube 314.
- the heat blocking plate 316 may be made of ceramic, quartz, or a metal coated ceramic, and prevents heat in the reaction zone from moving to the loading space during the process. Some of the reaction gas supplied in the reaction zone may move to the loading space through the open lower portion of the internal reaction tube 314. In this case, if the loading space is above a certain temperature, some of the reaction gas may be deposited on the inner wall of the loading space. Can be. Therefore, it is necessary to prevent the loading space from being heated through the heat shield plate 316, and thus, the reaction gas may be prevented from being deposited on the inner wall of the loading space.
- the lower chamber 312b has an exhaust port 344, an auxiliary exhaust port 328a, and an auxiliary gas supply port 362.
- the exhaust port 344 has a 'b' shape, and the exhaust nozzle unit 334 described later is connected to the first exhaust line 342 through the exhaust port 344.
- the auxiliary exhaust port 328a is connected to the auxiliary exhaust line 328b, and the loading space inside the lower chamber 312b can be exhausted through the auxiliary exhaust port 328a.
- the auxiliary gas supply port 362 is connected to the auxiliary gas supply line (not shown), and supplies the gas supplied through the auxiliary gas supply line into the loading space.
- inert gas may be supplied into the loading space through the auxiliary gas supply port 362.
- the pressure in the loading space may be set to be slightly higher than the pressure in the process space.
- the reaction gas in the processing space cannot move to the loading space.
- the external reaction tube 312a closes the upper portion of the lower chamber 312b with the upper portion open, and provides a process space in which an epitaxial process is performed.
- the support flange 442 is installed between the lower chamber 312b and the external reaction tube 312a, and the external reaction tube 312 is installed on the upper portion of the support flange 442.
- the loading space of the lower chamber 312b and the process space of the external reaction tube 312a communicate with each other through an opening formed in the center of the support flange 442. As described above, all of the substrates on the substrate holder 328 When loaded, the substrate holder 328 may move to the process space of the external reaction tube 312a.
- the internal reaction tube 314 is installed inside the external reaction tube 312a, and the internal reaction tube 314 provides a reaction zone for the substrate S.
- the inside of the external reaction tube 312a is divided into a reaction zone and a non-reaction zone by the internal reaction tube 314, and the reaction zone is located inside the internal reaction tube 314, and the non-reaction zone is the internal reaction tube 314.
- the substrate holder 328 is located in the reaction zone at the time of switching to the process position, and the reaction zone has a smaller volume than the process space. Therefore, the supply of the reaction gas may be minimized when supplied into the reaction region, and the reaction gas may be concentrated on the substrate S loaded in the substrate holder 328.
- the inner reaction tube 314 is open at the top and the lower part is opened, and the substrate holder 328 moves to the reaction region through the lower part of the inner reaction tube 314.
- the side heater 324 and the upper heater 326 are disposed to surround the external reaction tube 312a.
- the side heater 324 and the upper heater 326 heat the process space inside the external reaction tube 312a, through which the process space (or reaction zone) can reach a temperature at which epitaxial processing is possible.
- the side heater 324 and the upper heater 326 are connected to the upper elevating rod 337 through the support frame 327, the support frame 327 as the upper elevating rod 337 is rotated by the elevating motor 338 ) Can go up and down.
- the epitaxial device further includes a gas supply unit, and the gas supply unit includes a supply nozzle unit 332 and an exhaust nozzle unit 334.
- the supply nozzle unit 332 includes a plurality of supply pipes 332a and a plurality of supply nozzles 332b, and the supply nozzles 332b are connected to the supply pipes 332a, respectively.
- Each of the supply nozzles 332b has a circular tube shape, and the supply port 332c is located at the tip of the supply nozzle 332b so that the reaction gas is discharged through the supply port 332c.
- the supply port 332c has a circular cross section, and as shown in FIG. 6, the supply nozzles 332b are arranged so that the heights of the supply ports 332c are different from each other.
- the supply pipes 332a and the supply nozzles 332b are located inside the external reaction tube 312a.
- the supply pipes 332a extend up and down, and the supply nozzles 332b are disposed substantially perpendicular to the supply pipes 332a, respectively.
- the supply ports 332c are located inside the internal reaction tube 314, whereby the reaction gas discharged through the supply ports 332c may be concentrated in the reaction region inside the internal reaction tube 314.
- the internal reaction tube 314 has a plurality of through holes 374, and the supply holes 332c of the supply nozzles 332b are disposed inside the internal reaction tube 314 through the through holes 374, respectively. Can be.
- FIG. 7 is a cross-sectional view illustrating an arrangement of supply nozzles and an arrangement of thermocouples illustrated in FIG. 1.
- the supply nozzles 332b each have supply holes 332c having a circular cross section.
- the supply holes 332c of the supply nozzles 332b are disposed circumferentially along the inner wall of the inner reaction tube 314, and are positioned at different heights.
- the supply nozzles 332b respectively spray the reaction gas toward the substrates S placed on the substrate holder 328.
- the heights of the supply holes 332c generally coincide with the heights of the respective substrates S.
- FIG. As shown in FIG. 6, the supply nozzles 332b are connected to the reaction gas source (not shown) through the supply lines 342 formed in the support flange 442.
- the reactant gas source may be a deposition gas (silicon gas (eg, SiCl 4 , SiHCl 3 , SiH 2 Cl 2 , SiH 3 Cl, Si 2 H 6 , or SiH 4 ) and a carrier gas (eg, N 2 and And / or H 2 )) or a gas for etching.
- a deposition gas silicon gas (eg, SiCl 4 , SiHCl 3 , SiH 2 Cl 2 , SiH 3 Cl, Si 2 H 6 , or SiH 4 ) and a carrier gas (eg, N 2 and And / or H 2 )) or a gas for etching.
- the exhaust nozzle unit 334 includes a plurality of exhaust pipes 334a and a plurality of exhaust nozzles 334b, and the exhaust nozzles 334b are connected to the exhaust pipes 334a, respectively. do.
- the exhaust port 334c is positioned at the tip of the exhaust nozzles 334b to suck unreacted gas and reaction by-products.
- the exhaust port 334c has a slotted cross section, and as shown in FIG. 6, the exhaust nozzles 334b are arranged so that the heights of the exhaust ports 334c are different from each other.
- the exhaust pipes 334a and the exhaust nozzles 334b are located inside the external reaction tube 312a.
- the exhaust pipes 334a extend up and down, and the exhaust nozzles 334b are disposed substantially perpendicular to the exhaust pipes 334a, respectively.
- the exhaust ports 334c are located inside the internal reaction tube 314, and thus, the exhaust ports 334c may effectively suck unreacted gas and reaction by-products from the reaction zone inside the internal reaction tube 314. have.
- the internal reaction tube 314 has a plurality of through holes 376, and the exhaust ports 334c of the exhaust nozzles 334b are disposed inside the internal reaction tube 314 through the through holes 376, respectively. Can be.
- FIG. 8 is a cross-sectional view illustrating an arrangement of exhaust nozzles and an arrangement of thermocouples illustrated in FIG. 1.
- the exhaust nozzles 334b each have exhaust ports 334c having a slotted cross section.
- the exhaust ports 334c of the exhaust nozzles 334b are disposed circumferentially along the inner wall of the inner reaction tube 314, and are located at different heights.
- the supply nozzles 332b spray the reaction gas toward the substrates S placed on the substrate holder 328, respectively, in the internal reaction tube 314. Unreacted gases and by-products are generated.
- the exhaust nozzles 334b suck unreacted gas and reaction byproducts and discharge them to the outside.
- the heights of the exhaust ports 334c generally coincide with the heights of the respective substrates S.
- FIG. 4 the exhaust nozzles 334b are connected to the first exhaust line 342 through an exhaust port 344 formed in the lower chamber 312b, and the unreacted gas and the reaction byproducts are first exhausted. Exhaust through line 342.
- the on-off valve 346 is installed on the first exhaust line 342 to open and close the first exhaust line 342, and the turbo pump 348 is installed on the first exhaust line 342 to provide the first exhaust line ( 342) forcibly discharge the unreacted gas and the reaction by-products.
- the first exhaust line 342 is connected to the second exhaust line 352, and the unreacted gas and the reaction by-products moving along the first exhaust line 342 are discharged through the second exhaust line 352.
- the auxiliary exhaust port 328a is formed in the lower chamber 312b, and the auxiliary exhaust line 328b is connected to the auxiliary exhaust port 328a.
- the auxiliary exhaust line 328b is connected to the second exhaust line 352, and the first and second auxiliary valves 328c and 328d are installed on the auxiliary exhaust line 328b to open and close the auxiliary exhaust line 328b.
- the auxiliary exhaust line 328b is connected to the first exhaust line 342 through the connection line 343, and the connection valve 343a is installed on the connection line 343 to open and close the connection line 343.
- thermocouples 382 and 384 are installed between the outer reaction tube 312a and the inner reaction tube 314, and the thermocouples 382 and 384 are disposed in the vertical direction to have a height. Measure the temperature accordingly. Therefore, the operator can determine the temperature in the process space according to the height, and can check in advance the effect of the temperature distribution on the process.
- FIG. 9 is a view illustrating supply lines respectively connected to the supply nozzles shown in FIG. 1.
- the supply nozzles 332 are connected to a reaction gas source (not shown) through separate supply lines 342, respectively. Therefore, the reaction gas having a uniform flow rate may be supplied to the reaction region of the internal reaction tube 314 through the plurality of supply nozzles 332. If one supply line 342 is connected to the plurality of supply nozzles 332, the reactant gases may be supplied at different flow rates according to the supply nozzles 332, thereby positioning the substrate on the substrate holder 328. Depending on the process rate may be different.
- FIG. 10 is a view showing the flow of the reaction gas in the inner reaction tube shown in FIG.
- the supply holes 332c of the supply nozzles 332b are disposed in the circumferential direction along the inner wall of the inner reaction tube 314 and are located at different heights.
- the exhaust ports 334c of the exhaust nozzles 334b are disposed circumferentially along the inner wall of the inner reaction tube 314, and are located at different heights. At this time, the center of the supply port 332c and the center of the exhaust port 334c are symmetrical with respect to the same height.
- the supply port 332c of the supply nozzle 332b and the exhaust port 334c of the exhaust nozzle 334b are located opposite to each other based on the center of the substrate S loaded on the substrate holder 328. Therefore, the reaction gas injected from the supply nozzle 332b flows toward the exhaust nozzle 334b located on the opposite side (indicated by the arrow), thereby allowing sufficient time for the reaction gas to react with the surface of the substrate S. It can be secured. At this time, the unreacted gas and the reaction by-products generated during the process are sucked out through the exhaust nozzle 334b and discharged.
- the flow of the reaction gas is different depending on the height of the substrate S loaded on the substrate holder 328, and the flow of the reaction gas varies according to the height of the substrate S.
- FIG. Have That is, since the position of the supply port 332c of the supply nozzle 332b and the position of the exhaust port 334c of the exhaust nozzle 334b have a phase difference depending on the height of the substrate S, the phase of the reaction gas is similarly the substrate. It has a phase difference according to the height of (S). Referring to FIG.
- reaction gas injected from the supply port exhibits the effect of diffusion by the reaction gas injected from the supply port at different heights. That is, interference may occur between flows of the reaction gas having a phase difference, and thus, the reaction gas may move toward the exhaust nozzle 334b in a state in which the reaction gas is diffused by the interference.
- the exhaust port 334c of the exhaust nozzle 334b is slot-shaped. Therefore, the reaction gas injected from the supply port 332c of the supply nozzle 332b is diffused to have a constant width according to the shape of the exhaust port 334c (shown in FIG. 10), thereby allowing the reaction gas to form the substrate S. It is possible to increase the area in contact with the surface. Moreover, generation of unreacted gas can be suppressed by inducing sufficient reaction. The reaction gas forms a laminar flow on the substrate S from the supply port 332c to the exhaust port 334c.
- the substrate holder 328 is connected to the rotating shaft 318, and the rotating shaft 318 is connected to the lifting motor 319a and the rotating motor 319b through the lower chamber 312b. do.
- the rotary motor 319b is installed on the motor housing 319c, and the rotary motor 319b drives the rotary shaft 318 during the epitaxial process to drive the substrate holder 328 (and the substrate together with the rotary shaft 318).
- the substrate S may be rotated to prevent such a result and to achieve uniform deposition on the surface of the substrate S.
- the motor housing 319c is fixed to the bracket 319d, and the bracket 319d is connected to the lifting rod 319e connected to the lower portion of the lower chamber 312b to move up and down along the lifting rod 319e.
- the bracket 319c is screwed into the lower rod 419, and the lower rod 419 is rotated by the lifting motor 319a. That is, the lower rod 419 is rotated by the lifting motor 319a, so that the bracket 319c and the motor housing 319c can be lifted together.
- the substrate holder 328 may be switched to a loading position and a process position by the lifting motor 319a.
- FIG. 11 is a view showing a state in which the substrate holder shown in FIG. 1 is switched to a process position.
- the heat blocking plate 316 is installed in the lower portion of the substrate holder 328, and as the rotary shaft 318 is raised and lowered together with the substrate holder 328.
- the heat blocking plate 316 closes the open lower portion of the inner reaction tube 314 to prevent the heat inside the inner reaction tube 314 from moving to the loading space in the lower chamber 312b.
- the epitaxial process will be described as an example, but the present invention can be applied to various semiconductor manufacturing processes including the epitaxial process.
- FIG. 12 is a perspective view schematically showing a modified embodiment of the supply nozzles shown in FIG.
- FIG. 13 is a perspective view illustrating the supply nozzle illustrated in FIG. 12
- FIG. 14 is a cross-sectional view illustrating the supply nozzle illustrated in FIG. 12.
- the supply nozzle 332b has an internal space in which the cross-sectional area increases along the discharge direction, and the reaction gas supplied through the supply pipe 332a forms an internal space of the supply nozzle 332b.
- the supply nozzle 332b has a supply port 332c formed at the tip, and the supply port 332c has a slot-shaped cross section.
- the cross-sectional area of the supply port 332c generally coincides with the cross-sectional area of the exhaust port 334c.
- FIG. 15 is a view illustrating a flow of a reaction gas through the supply nozzles and the exhaust nozzles shown in FIG. 12.
- the reaction gas injected from the supply nozzle 332b flows toward the exhaust nozzle 334b located on the opposite side (indicated by the arrow).
- the reaction gas is discharged through the supply port 332c in a state in which the reaction gas is diffused through the internal space of the supply nozzle 332b and then sucked through the exhaust port 334c of the exhaust nozzle 334b.
- a laminar flow is formed having a constant width (roughly coinciding with the cross-sectional area of the supply port 332c and the cross-sectional area of the exhaust port 334c) from 332c to the exhaust port 334c.
- the exhaust nozzles 334b illustrated in FIGS. 6 and 12 have the same structure as the supply nozzles 332b illustrated in FIGS. 12 to 14. That is, the exhaust nozzle 334b has an internal space in which the cross-sectional area decreases along the suction direction, and the unreacted gas and the reaction by-product sucked through the exhaust port 332c converge along the internal space of the exhaust nozzle 334b and then the exhaust pipe. Go to 332a.
- FIG. 16 is a perspective view schematically showing a modified embodiment of the supply nozzle shown in FIG. 13, and FIG. 17 is a cross-sectional view showing the supply nozzle shown in FIG.
- the supply nozzle 332b includes a spray plate 332d, and the spray plate 332d may be installed on the supply port 332c.
- the injection plate 332d has a plurality of injection holes 332e, and the reaction gas diffused along the inner space of the supply nozzle 332b may be injected through the injection holes 332e.
- the present invention can be applied to various types of semiconductor manufacturing equipment and manufacturing methods.
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Abstract
Description
Claims (11)
- 기판에 대한 공정이 이루어지는 기판 처리 장치에 있어서,상부가 개방되며, 일측에 상기 기판이 출입하는 통로가 형성되는 하부챔버;상기 하부챔버의 개방된 상부를 폐쇄하며, 상기 공정이 이루어지는 공정공간을 제공하는 외부반응튜브;하나 이상의 상기 기판이 상하방향으로 적재되며, 상기 기판이 적재되는 적재위치 및 상기 기판에 대한 상기 공정이 이루어지는 공정위치로 전환가능한 기판 홀더; 및상기 외부반응튜브의 내부에 설치되어 상기 공정공간을 향해 반응가스를 공급하며, 상하방향에 따라 서로 다른 위상차를 가지는 상기 반응가스의 유동을 형성하는 가스공급유닛을 포함하는 것을 특징으로 하는 기판 처리 장치.
- 제1항에 있어서,상기 가스공급유닛은,상기 외부반응튜브의 내벽을 따라 배치되며, 서로 다른 높이에 각각 배치되어 상기 반응가스를 토출하는 복수의 공급노즐들;상기 공급노즐들에 각각 연결되어 상기 공급노즐들에 각각 상기 반응가스를 공급하는 복수의 공급관들;상기 외부반응튜브의 내벽을 따라 배치되며, 서로 다른 높이에 각각 배치되어 상기 공정공간 내의 미반응가스 및 반응부산물을 흡입하는 복수의 배기노즐들; 및상기 배기노즐들에 각각 연결되어 상기 배기노즐들을 통해 각각 흡입된 상기 미반응가스 및 상기 반응부산물들이 통과하는 복수의 배기관들을 구비하는 것을 특징으로 하는 기판 처리 장치.
- 제2항에 있어서,상기 공급노즐들 및 상기 배기노즐들은 상기 기판 홀더가 상기 공정위치에 있을 때 상기 기판 홀더에 적재된 상기 기판들의 위치와 각각 대응되도록 배치되는 것을 특징으로 하는 기판 처리 장치.
- 제2항에 있어서,각각의 상기 공급노즐은 상기 반응가스가 토출되는 원형 단면의 공급구를 가지는 원형관이고,각각의 상기 배기노즐은 흡입방향을 따라 단면적이 감소하는 내부공간과, 선단에 형성되어 상기 미반응가스 및 상기 반응부산물을을 흡입하는 슬롯형 단면의 배기구를 가지며,동일 높이에 대하여 각각의 상기 공급구의 중심과 상기 배기구의 중심은 서로 대칭을 이루도록 배치되는 것을 특징으로 하는 기판 처리 장치.
- 제2항에 있어서,각각의 상기 공급노즐은 토출방향을 따라 단면적이 증가하는 내부공간과, 선단에 형성되어 상기 반응가스가 토출되는 슬롯형 단면의 공급구를 가지고,각각의 상기 배기노즐은 흡입방향을 따라 단면적이 감소하는 내부공간과, 선단에 형성되어 상기 미반응가스 및 상기 반응부산물을을 흡입하는 슬롯형 단면의 배기구를 가지며,동일 높이에 대하여 각각의 상기 공급구의 중심과 상기 배기구의 중심은 서로 대칭을 이루도록 배치되는 것을 특징으로 하는 기판 처리 장치.
- 제2항에 있어서,각각의 상기 공급노즐은 토출방향을 따라 단면적이 증가하는 내부공간과, 선단에 형성되어 상기 반응가스가 토출되는 슬롯형 단면의 공급구, 그리고 상기 공급구 상에 설치되어 복수의 분사홀들을 가지는 분사판을 가지고,각각의 상기 배기노즐은 흡입방향을 따라 단면적이 감소하는 내부공간과, 선단에 형성되어 상기 미반응가스 및 상기 반응부산물을을 흡입하는 슬롯형 단면의 배기구를 가지며,동일 높이에 대하여 각각의 상기 공급구의 중심과 상기 배기구의 중심은 서로 대칭을 이루도록 배치되는 것을 특징으로 하는 기판 처리 장치.
- 제2항에 있어서,상기 가스공급유닛은 상기 공급노즐들에 각각 연결되어 상기 공급노즐들에 상기 반응가스를 각각 공급하는 복수의 공급라인들을 더 구비하는 것을 특징으로 하는 기판 처리 장치.
- 제7항에 있어서,상기 기판 처리 장치는 상기 하부챔버와 상기 외부반응튜브 사이에 설치되는 지지플랜지를 더 포함하며,상기 공급라인들은 상기 지지플랜지를 통해 상기 공급노즐들에 각각 연결되는 것을 특징으로 하는 기판 처리 장치.
- 제4항에 있어서,상기 기판 처리 장치는,상기 외부반응튜브의 내부에 설치되며, 상기 공정위치에 놓여진 상기 기판 홀더의 둘레에 배치되어 상기 기판에 대한 반응영역을 구획하는 내부반응튜브를 더 포함하며,각각의 상기 공급구 및 상기 배기구는 상기 내부반응튜브의 내부에 위치하는 것을 특징으로 하는 기판 처리 장치.
- 제1항에 있어서,상기 기판 처리 장치는 상기 외부반응튜브의 내부에 설치되어 상하방향으로 배치된 열전대를 더 포함하는 것을 특징으로 하는기판 처리 장치.
- 제1항에 있어서,상기 기판 처리 장치는 상기 기판 홀더에 연결되며 상기 공정 동안 기설정된 방향으로 회전하는 회전축을 더 포함하는 것을 특징으로 하는 기판 처리 장치.
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- 2012-11-16 WO PCT/KR2012/009723 patent/WO2013073886A1/ko active Application Filing
- 2012-11-16 US US14/357,628 patent/US9620395B2/en active Active
- 2012-11-16 CN CN201280056552.3A patent/CN103959438B/zh active Active
- 2012-11-16 JP JP2014542244A patent/JP5919388B2/ja active Active
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Also Published As
Publication number | Publication date |
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US20140345801A1 (en) | 2014-11-27 |
KR101364701B1 (ko) | 2014-02-20 |
CN103959438B (zh) | 2017-03-15 |
US9620395B2 (en) | 2017-04-11 |
CN103959438A (zh) | 2014-07-30 |
JP5919388B2 (ja) | 2016-05-18 |
TWI489527B (zh) | 2015-06-21 |
KR20130054706A (ko) | 2013-05-27 |
TW201324590A (zh) | 2013-06-16 |
JP2015503227A (ja) | 2015-01-29 |
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