WO2011162297A1 - 成膜装置、成膜装置のメンテナンス方法 - Google Patents
成膜装置、成膜装置のメンテナンス方法 Download PDFInfo
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- WO2011162297A1 WO2011162297A1 PCT/JP2011/064288 JP2011064288W WO2011162297A1 WO 2011162297 A1 WO2011162297 A1 WO 2011162297A1 JP 2011064288 W JP2011064288 W JP 2011064288W WO 2011162297 A1 WO2011162297 A1 WO 2011162297A1
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- film
- chamber
- film forming
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- forming chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/24—Deposition of silicon only
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/4401—Means for minimising impurities, e.g. dust, moisture or residual gas, in the reaction chamber
- C23C16/4405—Cleaning of reactor or parts inside the reactor by using reactive gases
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/4412—Details relating to the exhausts, e.g. pumps, filters, scrubbers, particle traps
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/50—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 using electric discharges
-
- 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
- C23C16/54—Apparatus specially adapted for continuous coating
- C23C16/545—Apparatus specially adapted for continuous coating for coating elongated substrates
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F71/00—Manufacture or treatment of devices covered by this subclass
- H10F71/137—Batch treatment of the devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/20—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials
- H10P14/24—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials using chemical vapour deposition [CVD]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a film forming apparatus for forming a film on a substrate and a maintenance method thereof.
- This application claims priority based on Japanese Patent Application No. 2010-145350 for which it applied to Japan on June 25, 2010, and uses the content here.
- a plasma CVD apparatus is often used to form a thin film silicon layer (semiconductor layer) of the thin film solar cell.
- the plasma CVD apparatus there are a single wafer type PE-CVD (plasma CVD) apparatus, an in-line type PE-CVD apparatus, a batch type PE-CVD apparatus, and the like.
- a problem in manufacturing a tandem-type thin film solar cell is that a large amount of polysilane powder, which is a by-product simultaneously generated when a microcrystalline silicon ( ⁇ m-Si) power generation layer is formed using a CVD method, is used. It is in handling.
- the polysilane powder is a brown powder (brown powder) and has flammability, so that it needs to be handled with care.
- by-products are attached to various portions in the deposition chamber. If the by-product adheres to the substrate during the subsequent film formation, there arises a problem that the conversion efficiency as a thin film solar cell is lowered.
- the present invention has been made in view of such a conventional situation, and a by-product containing polysilane generated when a silicon film is formed can be quickly and easily processed when the film is not formed. It is a first object to provide a film forming apparatus. Furthermore, the present invention provides a film-forming apparatus maintenance method capable of quickly and easily processing a by-product containing polysilane that is generated when a silicon film is formed. The purpose.
- a film forming apparatus includes a film formation chamber that forms a film on a substrate under reduced pressure, an ignition unit that ignites a flammable by-product generated in the film formation chamber, A first gas supply unit for supplying oxygen gas to the film formation chamber; a second gas supply unit for supplying nitrogen gas to the film formation chamber; and a first detection unit for measuring the pressure in the film formation chamber; .
- a second detection unit that measures the temperature of the by-product may be provided in the film forming chamber.
- a third temperature detecting unit that measures a space temperature in the film forming chamber may be provided in the film forming chamber.
- a film deposition apparatus maintenance method is a film deposition apparatus maintenance method for forming a film on a substrate under reduced pressure, wherein the film is formed from the film deposition chamber of the film deposition apparatus.
- the substrate is transported outside the film formation chamber (step A), oxygen gas is introduced into the film formation chamber (step B), and a flammable by-product generated by the film formation is ignited (step C).
- the by-product is combusted (step D), nitrogen gas is introduced into the film-forming chamber (step E), and non-flammable oxidation by-products generated when the by-product is combusted are formed in the film-forming chamber. (Step F).
- oxygen gas may be replenished so that the pressure in the film deposition chamber becomes substantially constant.
- the exhaust system of the film deposition chamber may be closed.
- the pressure in the film deposition chamber is substantially the same in the step C and the step D.
- pressure control may be performed.
- the pressure in the film deposition chamber is lower than that in the combustion process. Control may be performed.
- the exhaust gas exhausted from the film deposition chamber may be diluted with nitrogen gas (step G).
- the inflammable by-product can be made into an incombustible oxide by supplying oxygen to the by-product in the film forming chamber and burning it. Therefore, the by-product containing polysilane generated when the silicon film is formed can be quickly and easily processed when the film is not formed.
- the step of igniting a by-product in the film forming chamber and supplying oxygen to burn the combustible by-product is provided. The oxide can be Therefore, the by-product containing polysilane generated when the silicon film is formed can be quickly and easily processed when the film is not formed.
- FIG. 1 It is a schematic sectional drawing which shows an example of the thin film solar cell which is an example of a to-be-film-formed object.
- FIG. 1 It is a schematic block diagram of the film-forming apparatus in one Embodiment of this invention. It is a perspective view of the film-forming chamber in the same embodiment. It is the perspective view which looked at the film-forming chamber in the same embodiment from another angle. It is a side view of the film-forming chamber in the same embodiment. It is sectional drawing which shows an example of the ignition part in the embodiment. It is a perspective view of the electrode unit in the embodiment. It is a perspective view from another angle of the electrode unit in the embodiment. It is a partially exploded perspective view of the electrode unit in the same embodiment.
- FIG. 6 is an explanatory view (1) showing the movement of the push-pull mechanism in the same embodiment. It is explanatory drawing (2) which shows the motion of the push-pull mechanism in the embodiment.
- FIG. 1 is a cross-sectional view of a thin film solar cell. As shown in FIG.
- a thin film solar cell 100 includes a substrate W constituting a surface, an upper electrode 101 made of a transparent conductive film provided on the substrate W, a top cell 102 made of amorphous silicon, a top An intermediate electrode 103 made of a transparent conductive film provided between the cell 102 and a bottom cell 104 described later, a bottom cell 104 made of microcrystalline silicon, a buffer layer 105 made of a transparent conductive film, and a back surface made of a metal film
- the electrode 106 is laminated.
- the thin film solar cell 100 is an a-Si / microcrystal Si tandem solar cell.
- power generation efficiency can be improved by absorbing short wavelength light by the top cell 102 and long wavelength light by the bottom cell 104.
- the three-layer structure of the p layer (102p), i layer (102i), and n layer (102n) of the top cell 102 is formed of amorphous silicon. Further, the three-layer structure of the p-layer (104p), i-layer (104i), and n-layer (104n) of the bottom cell 104 is composed of microcrystal silicon.
- the thin-film solar cell 100 when energetic particles called photons contained in sunlight hit the i layer, electrons and holes are generated due to the photovoltaic effect, and the electrons are n layers and the holes are Move toward the p-layer. Electrons generated by the photovoltaic effect can be taken out by the upper electrode 101 and the back electrode 106, and light energy can be converted into electric energy.
- the thin-film solar cell 100 employs a texture structure for the purpose of a prism effect that extends the optical path of sunlight incident on the upper electrode 101 and a light confinement effect.
- FIG. 2 is a schematic configuration diagram showing an example of a film forming apparatus (thin film solar cell manufacturing apparatus) according to the present invention.
- the film formation apparatus 10 includes a film formation chamber 11 in which a film (for example, a bottom cell 104 made of microcrystalline silicon) can be simultaneously formed on a plurality of substrates W using a CVD method.
- substrate film forming lines 16 including a film forming chamber 11, a preparation / removal chamber 13, and a substrate desorption chamber 15 are provided.
- the substrate removal robot 17 can move on rails 18 laid on the floor surface, and the substrate removal robot 17 can deliver the substrate W to all substrate deposition lines 16. Yes.
- the process module 14 composed of the film forming chamber 11 and the charging / unloading chamber 13 is integrated and formed with a size that can be loaded on a truck.
- FIG. 3A is a perspective view showing a schematic configuration of the film forming chamber.
- FIG. 3B is a perspective view seen from a different angle from FIG. 3A.
- FIG. 3C is a side view showing a schematic configuration of the film forming chamber.
- the film forming chamber 11 is formed in a substantially box shape.
- the carrier loading / unloading port 24 is provided with a shutter (first opening / closing portion) 25 that opens and closes the carrier loading / unloading port 24.
- the carrier carry-in / out port 24 is closed with airtightness secured.
- Three electrode units 31 for forming a film on the substrate W are attached to the side surface 27 facing the side surface 23.
- the electrode unit 31 is configured to be detachable from the film forming chamber 11.
- An exhaust pipe 29 for evacuating the inside of the film forming chamber 11 is connected to the lower side surface 28 of the film forming chamber 11, and a vacuum pump 30 is provided in the exhaust pipe 29.
- ignition parts 39 are provided at a total of four locations, respectively.
- the ignition unit 39 may be formed of, for example, a SiC heater provided with a rod-shaped red hot part 39a exposed in the film forming chamber 11 as shown in FIG. 3D.
- the SiC heater can heat the red hot part 39a to about 1100 ° C., for example.
- Such an igniter 39 is energized when igniting a combustible by-product described later.
- the portion other than the red hot part 39a of the ignition part 39 is preferably covered with, for example, a cover 39b made of metal or the like in the film forming chamber 11 so that a by-product is not directly deposited.
- the red hot part 39 a of the ignition part 39 is preferably provided so as to be inclined so that the tip thereof extends toward the bottom surface of the film forming chamber 11. As a result, the combustible by-product Q deposited on the bottom surface of the film forming chamber 11 can be reliably ignited.
- a pressure gauge (first detection unit) 91 for measuring the pressure in the film forming chamber 11 is installed on the side surface 23 of the film forming chamber 11.
- the pressure gauge 91 only needs to be able to measure a pressure in a range from vacuum to normal pressure, for example, and outputs a pressure value in the film forming chamber 11.
- thermometer (second detection unit) 92 is installed near the middle of each side of the bottom surface of the film forming chamber 11.
- the lower thermometer 92 may be composed of a thermocouple, for example.
- These lower thermometers 92 measure the temperature when the by-product deposited in the lower part of the film forming chamber 11 after the film is burned.
- What is necessary is just to attach the sensor part of a thermocouple to the height position which is buried in a by-product.
- the lower thermometer 92 is preferably installed at an intermediate point between the ignition portions 39 on each side of the bottom surface of the film forming chamber 11. This is because the lower thermometer 92 may be used when confirming the completion of combustion of the by-product, and therefore it is preferable that the lower thermometer 92 is installed in the slowest part of the by-product.
- the part where the spread of fire to the by-product is the slowest is the accumulation of the by-product, which is often near the middle of each side of the bottom surface away from the ignition unit 39. If the installation position of the lower thermometer 92 is in contact with the by-product accumulated in the lower part, combustion of the by-product deposited in the lower part can be confirmed.
- An upper thermometer (third detection unit) 93 for measuring the space temperature in the film forming chamber 11 is installed on the upper portion of the film forming chamber 11.
- the upper thermometer 93 may be composed of, for example, a thermocouple.
- the upper thermometer 93 measures the temperature of the space in the film forming chamber 11 when the by-product burns, that is, the temperature of the gas in the film forming chamber 11. For this reason, it is preferable that the upper thermometer 93 is installed in the upper part of the film forming chamber 11 as close to the center as possible. However, when a substrate or carrier transport unit is installed, it may be installed between them.
- the ignition unit 39 ignites, the film formation chamber becomes hot for a moment due to the combustion of the gas in the film formation chamber 11.
- the upper thermometer 93 can detect the ignition state by confirming this temperature rise.
- the film formation chamber 11 includes an oxygen gas supply unit (first gas supply unit) 160 that introduces oxygen gas into the film formation chamber 11 and a nitrogen gas supply unit (second gas supply unit) 150 that introduces nitrogen gas. And are connected.
- the oxygen gas supply unit 160 and the nitrogen gas supply unit 150 are supplied to a cathode unit 68 (see FIG. 4D) of the film forming chamber 11 to be described later via a pipe (not shown).
- the introduction positions of the oxygen gas supply unit 160 and the nitrogen gas supply unit 150 are not limited to the cathode unit 68, and may be introduced into the film forming chamber 11. Furthermore, the introduction positions of the oxygen gas supply unit 160 and the nitrogen gas supply unit 150 may be different.
- FIG. 4A is a perspective view illustrating a schematic configuration of the electrode unit 31.
- FIG. 4B is a perspective view seen from a different angle from FIG. 4A.
- FIG. 4C is a partially exploded perspective view of the electrode unit 31.
- FIG. 4D is a partial cross-sectional view of the cathode unit and the anode unit.
- the electrode unit 31 is configured to be attachable to and detachable from three openings 26 formed on the side surface 27 of the film forming chamber 11 (see FIG. 3B).
- the electrode unit 31 is provided with a wheel 61 at a lower portion and is configured to be movable on the floor surface.
- a side plate 63 is erected in a vertical direction on the bottom plate 62 to which the wheel 61 is attached.
- the side plate portion 63 has a size that closes the opening 26 on the side surface 27 of the film forming chamber 11. That is, the side plate portion 63 forms a part of the wall surface of the film forming chamber 11.
- the bottom plate portion 62 with the wheels 61 may have a cart structure that can be separated from and connected to the electrode unit 31.
- the carriage With the separable carriage structure as described above, after the electrode unit 31 is connected to the film forming chamber 11, the carriage can be separated and used as a common carriage for movement of the other electrode units 31.
- An anode unit 90 and a cathode unit 68 positioned on both surfaces of the substrate W when the film is formed are provided on one surface (surface facing the inside of the film forming chamber 11) 65 of the side plate portion 63.
- anode units 90 are arranged on both sides of the cathode unit 68 so as to be spaced apart from each other, so that two substrates W can be formed simultaneously with one electrode unit 31. ing.
- the substrates W are arranged opposite to both sides of the cathode unit 68 so as to be substantially parallel to the direction of gravity, and the two anode units 90 are respectively connected to the substrates W on the outer side in the thickness direction of the substrates W. It is arranged in a state of facing each other.
- the anode unit 90 includes a plate-like anode 67 and a heater H built in the anode unit 90.
- a driving device 71 for driving the anode unit 90 and a matching box 72 for supplying power to the cathode intermediate member 76 of the cathode unit 68 during film formation are attached to the other surface 69 of the side plate portion 63. It has been.
- the side plate portion 63 is further formed with a connecting portion (not shown) for piping for supplying a film forming gas to the cathode unit 68.
- the anode unit 90 includes a heater H as a temperature control unit that controls the temperature of the substrate W.
- the two anode units 90, 90 are configured to be movable in a direction (horizontal direction) approaching / separating from each other by a driving device 71 provided on the side plate portion 63, and a separation distance between the substrate W and the cathode unit 68 can be controlled. I have to.
- the two anode units 90 and 90 move in the direction of the cathode unit 68 and come into contact with the substrate W, and further move in a direction close to the cathode unit 68.
- the separation distance between the substrate W and the cathode unit 68 is adjusted to a desired distance.
- film formation is performed, and the anode units 90 and 90 are moved away from each other after film formation, so that the substrate W can be easily taken out from the electrode unit 31.
- the anode unit 90 is attached to the drive device 71 via a hinge (not shown), and the surface of the anode unit 90 (anode 67) on the cathode unit 68 side in a state where the electrode unit 31 is pulled out from the film forming chamber 11. It can be rotated (opened) until 67A is substantially parallel to one surface 65 of the side plate portion 63. That is, the anode unit 90 can be rotated by approximately 90 ° in plan view (see FIG. 4A).
- An oxygen gas supply unit (first gas supply unit) 160 and a nitrogen gas supply unit (second gas supply unit) 150 are connected to the cathode unit 68 via a pipe (not shown).
- a shower plate 75 having a plurality of small holes (not shown) is arranged on the surface facing the anode unit 90 (anode 67), so that a film forming gas can be ejected toward the substrate W. Yes.
- the cathode unit 68 when the oxygen gas supply unit (first gas supply unit) 160 and the nitrogen gas supply unit (second gas supply unit) 150 are introduced into the film forming chamber 11, the cathode unit 68.
- oxygen gas or nitrogen gas is introduced directly into the film forming chamber 11 from a gas inlet formed on the wall surface of the film forming chamber 11. May be.
- a configuration may be employed in which piping for flowing a cleaning gas is provided in the film forming chamber 11 and oxygen gas or nitrogen gas is introduced into the film forming chamber 11 using this piping.
- Oxygen gas and nitrogen gas supplied from the oxygen gas supply unit 160 and the nitrogen gas supply unit 150 can be introduced into the film formation chamber 11 from the shower plate 75.
- the shower plates 75 and 75 are cathodes (high frequency electrodes) connected to the matching box 72.
- a cathode intermediate member 76 connected to the matching box 72 is provided between the two shower plates 75 and 75.
- the shower plate 75 is disposed on both side surfaces of the cathode intermediate member 76 in a state of being electrically connected to the cathode intermediate member 76.
- the cathode intermediate member 76 and the shower plate (cathode) 75 are formed of a conductor, and the high frequency is applied to the shower plate (cathode) 75 via the cathode intermediate member 76. For this reason, a voltage having the same potential and the same phase for generating plasma is applied to the two shower plates 75 and 75.
- the cathode intermediate member 76 is connected to the matching box 72 by wiring (not shown).
- a space 77 is formed between the cathode intermediate member 76 and the shower plate 75, and a film forming gas is supplied through a space 77 from a gas supply device (not shown). Further, oxygen gas and nitrogen gas are supplied through the space 77.
- the space 77 is separated by the cathode intermediate member 76.
- the space 77 is formed separately for each shower plate 75, 75, and the gas discharged from each shower plate 75, 75 is controlled independently. That is, the space 77 has a role of a gas supply path.
- the cathode unit 68 since the space portion 77 is formed separately corresponding to each shower plate 75, 75, the cathode unit 68 has two gas supply paths. Become.
- a hollow exhaust duct 79 is provided around the entire periphery of the cathode unit 68.
- the exhaust duct 79 is formed with an exhaust port 80 for exhausting the film forming gas and reaction byproducts (powder) in the film forming space 81.
- an exhaust port 80 is formed facing a film formation space 81 formed between the substrate W and the shower plate 75 when performing film formation.
- a plurality of the exhaust ports 80 are formed along the peripheral edge of the cathode unit 68, and are configured to be able to exhaust substantially uniformly over the entire periphery.
- An opening (not shown) is formed in a surface 82 of the exhaust duct 79 facing the inside of the film forming chamber 11 in the lower part of the cathode unit 68 so that the exhausted film forming gas can be discharged into the film forming chamber 11. It has become.
- the gas discharged into the film forming chamber 11 is exhausted to the outside through an exhaust pipe 29 provided at the lower side surface 28 of the film forming chamber 11.
- a stray capacitance body 82 having a dielectric and / or a laminated space is provided.
- the exhaust duct 79 is connected to the ground potential.
- the exhaust duct 79 also functions as a shield frame for preventing abnormal discharge from the cathode 75 and the cathode intermediate member 76.
- the mask 78 covers a clamping piece 59A (see FIGS. 9 and 21) of a clamping unit 59 (described later) provided on the carrier 21, and is formed integrally with the clamping piece 59A when film formation is performed.
- a gas flow path R for guiding the film forming gas and particles to the exhaust duct 79 is formed. That is, the gas flow path R is formed between the carrier 21 (the sandwiching piece 59 ⁇ / b> A) and the shower plate 75 and between the exhaust duct 79.
- the moving rail 37 is formed between the film formation chamber 11 and the preparation / removal chamber 13 and between the preparation / removal chamber 13 and the substrate removal chamber 15 so that the carrier 21 can move. Laid between the substrate removal chambers 15.
- the moving rail 37 is separated between the film forming chamber 11 and the loading / unloading chamber 13, and the carrier carry-in / out port 24 can be sealed by closing the shutter 25.
- FIG. 5A is a perspective view showing a schematic configuration of the preparation / removal chamber 13.
- FIG. 5B is a perspective view seen from a different angle than FIG. 5A.
- the preparation / removal chamber 13 is formed in a box shape.
- the side surface 33 is connected to the side surface 23 of the film forming chamber 11 while ensuring airtightness.
- An opening 32 through which three carriers 21 can be inserted is formed on the side surface 33.
- the side surface 34 facing the side surface 33 is connected to the substrate desorption chamber 15.
- three carrier carry-in / out ports 35 through which the carrier 21 on which the substrate W is mounted can pass are formed on the side surface 34.
- the carrier carry-in / out port 35 is provided with a shutter (second opening / closing portion) 36 that can ensure airtightness.
- the moving rail 37 is separated between the loading / unloading chamber 13 and the substrate removal chamber 15, and the carrier carry-in / out port 35 can be sealed by closing the shutter 36.
- the preparation / removal chamber 13 is provided with a push-pull mechanism 38 for moving the carrier 21 along the moving rail 37 between the film formation chamber 11 and the preparation / removal chamber 13.
- the push-pull mechanism 38 includes a locking portion 48 for locking the carrier 21, and guide members provided at both ends of the locking portion 48 and arranged substantially parallel to the moving rail 37. 49 and a moving device 50 for moving the locking portion 48 along the guide member 49.
- the carrier 21 is moved by a predetermined distance in a direction substantially perpendicular to the laying direction of the moving rail 37 in plan view in order to accommodate the pre-deposition substrate W 1 and the post-deposition substrate W 2 in the plan view.
- a moving mechanism (not shown) is provided.
- An exhaust pipe 42 for evacuating the inside of the preparation / removal chamber 13 is connected to the lower side surface 41 of the preparation / removal chamber 13, and a vacuum pump 43 is provided in the exhaust pipe 42.
- FIG. 7A is a perspective view showing a schematic configuration of a substrate desorption chamber.
- FIG. 7B is a front view showing a schematic configuration of the substrate desorption chamber.
- the substrate removal chamber 15 is formed in a frame shape and is connected to the side surface 34 of the preparation / removal chamber 13.
- the substrate W ⁇ b> 1 before film formation can be attached to the carrier 21 disposed on the moving rail 37, and the substrate W ⁇ b> 2 after film formation can be removed from the carrier 21.
- the substrate removal chamber 15 is configured so that three carriers 21 can be arranged in parallel.
- the substrate removal robot 17 has a drive arm 45 (see FIG. 2), and can adsorb the substrate W to the tip of the drive arm 45.
- the drive arm 45 can be driven between the carrier 21 disposed in the substrate removal chamber 15 and the substrate storage cassette 19.
- the drive arm 45 takes out the pre-deposition substrate W1 from the substrate storage cassette 19, attaches the pre-deposition substrate W1 to the carrier (first carrier) 21 disposed in the substrate desorption chamber 15, and the post-deposition processing.
- the substrate W ⁇ b> 2 is removed from the carrier (second carrier) 21 that has returned to the substrate removal chamber 15 and is transported to the substrate storage cassette 19.
- FIG. 8 is a perspective view of the substrate storage cassette 19.
- the substrate storage cassette 19 is formed in a box shape and has a size capable of storing a plurality of substrates W.
- the substrate W can be accommodated by stacking a plurality of substrates in the vertical direction with the film formation surface substantially parallel to the horizontal direction.
- a caster 47 is provided at the lower part of the substrate housing cassette 19 so that it can be moved to another processing apparatus.
- the substrate accommodation cassette 19 may accommodate a plurality of film formation surfaces of the substrate W in the left-right direction in a state in which the deposition surface is substantially parallel to the gravity direction.
- FIG. 9 is a perspective view of the carrier 21.
- two frame-shaped frames 51 to which the substrate W can be attached are formed on the carrier 21. That is, two substrates W can be attached to one carrier 21.
- the two frames 51 and 51 are integrated by a connecting member 52 at the upper part thereof.
- a wheel 53 placed on the moving rail 37 is provided above the connecting member 52, and the carrier 21 can move as the wheel 53 rolls on the moving rail 37.
- a frame holder 54 is provided below the frame 51 in order to suppress the shaking of the substrate W when the carrier 21 moves.
- the front end of the frame holder 54 is fitted to a rail member 55 (see FIG. 18) having a concave cross section provided on the bottom surface of each chamber.
- the rail member 55 is arranged in a direction along the moving rail 37 in plan view. If the frame holder 54 is composed of a plurality of rollers, more stable conveyance is possible.
- Each frame 51 has a peripheral edge 57 and a clamping part 59.
- the film formation surface of the substrate W is exposed in the opening 56 formed in the frame 51, and the holding portion 59 holds the substrate W from both sides at the peripheral edge 57 of the opening 56. It can be fixed.
- the sandwiching portion 59 includes sandwiching pieces 59A and 59B that come into contact with the front surface WO (deposition surface) and the back surface WU (rear surface) of the substrate W (see FIG. 21), and the spacing between the sandwiching pieces 59A and 59B.
- the distance can be changed via a spring or the like. That is, the sandwiching piece 59A is configured to be movable along the direction in which the sandwiching piece 59A approaches and separates from the sandwiching piece 59B in accordance with the movement of the anode unit 90 (anode 67) (details will be described later).
- one carrier 21 one carrier capable of holding a pair (two) of substrates
- three (21 to 3 substrate holding) carriers 21 are attached to a set of film forming apparatuses 10.
- the film forming apparatus 10 In the film forming apparatus 10 according to the present embodiment, four substrate film forming lines 16 including the above-described film forming chamber 11, the loading / unloading chamber 13 and the substrate desorbing chamber 15 are arranged and configured. The substrate W can be formed almost simultaneously.
- the present invention is not limited to the above-described embodiment, and includes those obtained by adding various modifications to the above-described embodiment without departing from the spirit of the present invention. That is, the specific shapes, configurations, and the like given in the embodiment are merely examples, and can be changed as appropriate.
- one preparation / extraction chamber 13 is connected to one film formation chamber 11
- a plurality of film formation chambers 11 are arranged in parallel with respect to one large preparation / extraction chamber 13.
- the process module 114 connected in this manner may be provided so that the carrier 21 can move within the preparation / removal chamber 13 (see FIG. 26).
- the substrate W attached to the carrier 21 can move in the preparation / removal chamber 13, so that different film forming materials can be supplied to each of the film forming chambers 11.
- a plurality of layers having different film forming materials can be formed more efficiently.
- the arrangement configuration of the thin-film solar cell manufacturing apparatus may be as shown in FIG.
- modules including a film forming chamber 11, a loading / unloading chamber 13, and a substrate desorbing chamber 15 are radially installed on the substrate demounting robot 17.
- the arrangement configuration of the thin-film solar cell manufacturing apparatus may be as shown in FIG.
- modules comprising a film forming chamber 11, a preparation / removal chamber 13, and a substrate desorbing chamber 15 are installed on both sides of the substrate desorbing robot 17. With this configuration, it is possible to save space and shorten the operation time of the substrate removal robot 17.
- the configuration is such that one substrate removal robot 17 is disposed and the substrate W is detached, but two substrate removal robots 17 are disposed, one of which is dedicated to mounting the substrate W and the other is disposed.
- the substrate W may be dedicated for removal.
- two drive arms 45 may be provided in one substrate removal robot 17 and two substrates W may be attached and removed at the same time.
- a substrate storage cassette 19 that stores a plurality of pre-deposition substrates W1 is placed at a predetermined position.
- the drive arm 45 of the substrate removal robot 17 is moved to take out one pre-deposition substrate W1 from the substrate storage cassette 19, and the pre-deposition substrate W1 is placed in the substrate desorption chamber 15. It is attached to the carrier 21.
- the pre-deposition substrate W1 arranged in the horizontal direction in the substrate accommodating cassette 19 is attached to the carrier 21 while changing its direction in the vertical direction.
- This operation is repeated once, and two substrates W1 before film formation are attached to one carrier 21. Further, this operation is repeated to attach the pre-deposition substrate W1 to the remaining two carriers 21 installed in the substrate removal chamber 15 respectively. That is, six substrates W1 before film formation are attached at this stage.
- the three carriers 21 to which the pre-deposition substrate W 1 is attached are moved substantially simultaneously along the moving rail 37 and are accommodated in the preparation / removal chamber 13.
- the shutter 36 of the carrier carry-in / out port 35 of the preparation / removal chamber 13 is closed.
- the inside of the preparation / removal chamber 13 is kept in a vacuum state using the vacuum pump 43.
- the three carriers 21 are moved by a predetermined distance (half pitch) using a moving mechanism in a direction orthogonal to the direction in which the moving rail 37 is laid in a plan view.
- the predetermined distance is a distance at which one carrier 21 is located between the adjacent moving rails 37 and 37.
- the shutter 25 of the film forming chamber 11 is opened, and the carrier 21A to which the post-deposition processing substrate W2 attached after film formation in the film forming chamber 11 is pushed to the loading / unloading chamber 13—
- the pull mechanism 38 is used for movement.
- the carrier 21 and the carrier 21A are alternately arranged in parallel in a plan view.
- the movement of the push-pull mechanism 38 will be described.
- the movement when the carrier 21A located in the film formation chamber 11 is moved to the preparation / removal chamber 13 will be described.
- the carrier 21A to which the post-deposition substrate W2 is attached is locked to the locking portion 48 of the push-pull mechanism 38.
- the moving arm 58 of the moving device 50 attached to the locking portion 48 is swung. At this time, the length of the moving arm 58 is variable.
- the locking portion 48 locked with the carrier 21A moves so as to be guided by the guide member 49, and moves into the preparation / removal chamber 13 as shown in FIG. 15B. That is, the carrier 21 ⁇ / b> A is moved from the film formation chamber 11 to the preparation / removal chamber 13. With this configuration, a driving source for driving the carrier 21 ⁇ / b> A in the film forming chamber 11 becomes unnecessary. By making the movement opposite to that described above, the carrier in the preparation / removal chamber 13 can be moved to the film formation chamber 11.
- the carrier 21 and the carrier 21 ⁇ / b> A are moved in a direction orthogonal to the moving rail 37 by the moving mechanism, and the carrier 21 holding the pre-deposition substrate W ⁇ b> 1 is moved to a position along the moving rail 37.
- the carrier 21 holding the pre-deposition substrate W1 is moved to the film formation chamber 11 using the push-pull mechanism 38, and the shutter 25 is closed after the movement is completed.
- the film forming chamber 11 is kept in a vacuum state.
- the pre-deposition substrate W1 attached to the carrier 21 is vertically aligned in the film formation chamber 11 so that the surface WO is substantially parallel to the gravity direction between the anode unit 90 and the cathode unit 68. It inserts in the state along (refer FIG. 18).
- the two anode units 90 of the electrode unit 31 are moved in a direction close to each other by the driving device 71, so that the anode unit 90 (anode 67) and the back surface WU of the pre-film formation substrate W ⁇ b> 1. And abut.
- the pre-deposition substrate W1 moves toward the cathode unit 68 so as to be pushed by the anode 67. Then, the gap between the pre-deposition substrate W1 and the shower plate 75 of the cathode unit 68 is moved to a predetermined distance (deposition distance). Note that the gap (film formation distance) between the pre-film formation substrate W1 and the shower plate 75 of the cathode unit 68 is 5 to 15 mm, for example, about 5 mm.
- the holding piece 59A of the holding portion 59 of the carrier 21 that is in contact with the surface WO side of the substrate W1 before film formation processing is displaced as the substrate W1 (anode unit 90) before film formation processing moves.
- the anode unit 90 moves in a direction away from the cathode unit 68
- the holding piece 59A is displaced toward the holding piece 59B by a restoring force such as a spring.
- the substrate W1 before film formation is sandwiched between the anode 67 and the sandwiching piece 59A.
- the sandwiching piece 59A comes into contact with the mask 78, and the movement of the anode unit 90 stops at this point (see FIG. 21).
- the mask 78 is formed so as to cover the surface of the sandwiching piece 59A and the outer edge portion of the substrate W, and is formed so as to be in close contact with the sandwiching piece 59A or the outer edge portion of the substrate W.
- the mating surface between the mask 78 and the outer edge portion of the sandwiching piece 59A or the substrate W has a role of a sealing surface, and is formed between the mask 78 and the outer edge portion of the sandwiching piece 59A or the substrate W.
- the membrane gas hardly leaks to the anode 67 side. Thereby, the range in which the film forming gas spreads is limited, and it is possible to suppress the unnecessary range from being formed. As a result, the cleaning range can be sandwiched and the cleaning frequency can be reduced, and the operating rate of the apparatus is improved.
- the channel height in the thickness direction of R is set so that the gap between the pre-deposition substrate W1 and the cathode unit 68 is a predetermined distance.
- the mask 78 and the substrate W may be arranged with a minute interval that restricts the passage of the film forming gas.
- Plasma is generated in 81 to form a film on the surface WO of the substrate W1 before film formation.
- the substrate W1 before film formation is heated to a desired temperature by the heater H built in the anode 67.
- the anode unit 90 stops heating when the pre-deposition substrate W1 reaches a desired temperature.
- a voltage is applied to the cathode unit 68, plasma is generated in the film formation space 81.
- the temperature of the substrate W1 before the film formation process may rise above a desired temperature.
- the anode unit 90 can also function as a heat radiating plate for cooling the pre-deposition substrate W1 whose temperature has increased excessively. Therefore, the substrate W1 before the film formation process is held at a desired temperature regardless of the elapsed time of the film formation process time. Note that when a plurality of layers are formed in a single film formation process, the film forming gas material to be supplied can be switched every predetermined time.
- the gas and particles in the film formation space 81 are exhausted from the exhaust port 80 formed at the peripheral edge of the cathode unit 68, and the exhausted gas passes through the gas flow path R to the cathode unit.
- An opening (an opening formed in the surface 82 of the exhaust duct 79 in the lower portion of the cathode unit 68 facing the inside of the film forming chamber 11) is passed through the exhaust duct 79 at the peripheral edge of the 68 to pass through the side surface of the film forming chamber 11.
- Exhaust from the exhaust pipe 29 provided in the lower part 28 to the outside. Since all the electrode units 31 in the film forming chamber 11 perform the same process as described above, it is possible to form films on the six substrates W at the same time.
- the two anode units 90 are moved away from each other by the driving device 71, and the substrate W2 and the frame 51 (holding piece 59A) after film formation are returned to their original positions (FIG. 19). FIG. 21). Further, by moving the anode unit 90 in the direction of separating, the substrate W2 after the film formation process and the anode unit 90 are separated (see FIG. 18).
- the shutter 25 of the film forming chamber 11 is opened, and the carrier 21 is moved to the loading / unloading chamber 13 using the push-pull mechanism 38.
- the loading / unloading chamber 13 is evacuated, and the carrier 21B to which the substrate W1 before film formation to be formed next is attached is already positioned.
- the heat stored in the substrate W2 after the film forming process is transferred to the substrate W1 before the film forming process in the preparation / removal chamber 13, and the temperature of the substrate W2 after the film forming process is lowered.
- the carrier 21 is returned to the position where it is arranged on the moving rail 37 by the moving mechanism.
- the shutter 36 is opened and the carrier 21 is moved to the substrate desorption chamber 15.
- the substrate W2 after film formation is removed from the carrier 21 by the substrate removal robot 17 in the substrate removal chamber 15 and transferred to the substrate storage cassette 19.
- the process is completed by moving the substrate storage cassette 19 to the place of the next process.
- the evacuation process can be reduced in a series of substrate formation steps in the preparation / removal chamber 13. . Therefore, productivity can be improved.
- the heat stored in the post-deposition processing substrate W2 is transferred to the pre-deposition processing substrate W1. Then, heat exchange is performed. That is, the heating step that is normally performed after the substrate W1 before film formation processing is accommodated in the film formation chamber 11 and the cooling step that is normally performed before the substrate W2 after film formation processing is carried out of the loading / unloading chamber 13 are omitted. be able to. As a result, productivity can be improved and equipment used in the conventional heating process / cooling process can be canceled, so that the manufacturing cost can be reduced.
- FIG. 29 is an explanatory view showing stepwise the maintenance method of the film forming apparatus of the present invention.
- the cylinder schematically represents the film forming chamber 11.
- a flammable by-product containing polysilane which is a brown powder (brown powder) is formed in the film forming chamber 11. Arise.
- the shutter 25 of the film forming chamber 11 is opened, and the carrier 21 is moved to the loading / unloading chamber 13 using the push-pull mechanism 38 (FIG. 5A, (See FIG. 5B).
- the substrate W on which the coating film has been formed is transferred from the film formation chamber 11 to the outside of the film formation chamber 11 (step A).
- the substrate W is unloaded from the film forming chamber 11, the shutter 25 is closed, the exhaust pipe 29 is closed and the exhaust system is closed, and then the oxygen gas supply unit (first gas supply unit) 160 through the cathode unit 68 shower.
- Oxygen is introduced into the film forming chamber 11 through the plate 75 (FIG. 29A [step B]).
- the oxygen gas may be introduced into the film forming chamber 11 so that the oxygen concentration in the film forming chamber 11 is about 75%. Thereby, the internal pressure in the film forming chamber 11 is increased from about 10 Pa to about 10 kPa.
- Oxygen gas is introduced from the oxygen gas supply unit (first gas supply unit) 160 so that the oxygen concentration in the film forming chamber 11 is about 75%, and then from the nitrogen gas supply unit (second gas supply unit) 150. Nitrogen gas can be introduced.
- the ignition unit 39 formed on the bottom surface of the film forming chamber 11 is energized.
- a by-product mainly composed of polysilane generated by the film formation of microcrystal silicon 50 to 300 times is deposited.
- combustion by an oxidation reaction is started between polysilane which is a flammable by-product and oxygen gas introduced into the film formation chamber 11 (FIG. 29B [ Step C]).
- step C When the combustion starts, the temperature temporarily rises and the internal pressure rises (step C shown in FIG. 30). This temperature rise can be detected by a pressure gauge (first detection unit) 91 and an upper thermometer (third detection unit) 93.
- the pressure and oxygen amount in the film forming chamber 11 before ignition are preferably determined so that the pressure during ignition does not exceed atmospheric pressure. After ignition, the pressure decreases as oxygen is consumed.
- oxygen gas is continuously supplied from the oxygen gas supply unit 160 into the film forming chamber 11, and the combustion of the by-product is continued (FIG. 29 (c) [Step D]).
- the supply amount of oxygen gas is such that a flow rate sufficient to compensate for the decrease in oxygen gas (due to combustion reaction) of polysilane is ensured.
- the internal pressure in the film forming chamber 11 is kept substantially constant. For example, by continuously flowing oxygen at a maximum of about 200 SLM, the internal pressure in the film forming chamber 11 is maintained at 10 kPa and the oxygen concentration is maintained at about 75%.
- oxygen gas may be introduced from the oxygen gas supply unit (first gas supply unit) 160 so that the internal pressure becomes constant in order to replenish consumed oxygen, and a nitrogen gas supply unit (second gas supply unit) It is not necessary to introduce nitrogen gas from the gas supply unit 150.
- the pressure in the film forming chamber 11 is constantly monitored by a pressure gauge (first detection unit) 91 formed on the side surface of the film forming chamber 11 so that the inside of the film forming chamber 11 is in a predetermined state.
- the flow rate of the oxygen gas from the oxygen gas supply unit 160 may be controlled based on the output of the pressure gauge 91 so that the internal pressure (for example, 10 kPa) is maintained.
- thermometer second detection unit
- upper thermometer third detection unit
- nitrogen gas is supplied into the film forming chamber 11 from the nitrogen gas supply unit (second gas supply unit) 150 with the exhaust system closed. It is introduced (FIG. 29 (d) [Step E-1]). Thereby, the concentration of oxygen in the film forming chamber 11 is diluted. Nitrogen gas may be introduced at a maximum flow rate of, for example, 200 SLM or less until, for example, the oxygen concentration in the film formation chamber 11 is reduced to about 15%. Thereby, the internal pressure in the film forming chamber 11 rises to, for example, about 50 kPa. Completion of combustion of the by-product can be detected by monitoring the temperature of the lower thermometer (second detection unit) 92, or by reducing / ending the amount of oxygen introduced. It can also be imitated.
- step E-2 the valve (not shown) of the exhaust pipe 29 is opened, the vacuum pump 30 is operated, and the nitrogen and oxygen mixed gas in the film forming chamber 11 is evacuated from the exhaust pipe 29 (FIG. 29 (e) [step] E-2]).
- the oxygen concentration in the film forming chamber 11 is diluted with nitrogen gas in step E-1 (oxygen concentration is about 15%), the gas in the film forming chamber 11 can be safely exhausted.
- silicon oxide (combustion product) deposited on the bottom of the film forming chamber 11 is removed by suction using, for example, a vacuum cleaner.
- the combustible by-product (polysilane) deposited in the film forming chamber 11 is changed into a non-combustible combustion product (silicon oxide) by the steps B to C.
- a vacuum cleaner removes the deposit from the film forming chamber 11 .
- the combustible by-product (polysilane) deposited in the film forming chamber 11 is changed into a non-combustible combustion product (silicon oxide) by the steps B to C.
- the combustion products in the film forming chamber 11 can be collected and removed safely. Further, since the collected combustion products are also non-flammable, it can be safely stored and processed.
- FIG. 30 is a graph showing the pressure change in the film forming chamber 11 in each step of FIG.
- the pressure in the film forming chamber 11 is controlled to be substantially the same. According to the graph of FIG. 30, the internal pressure in the film forming chamber 11 rises from about 10 Pa to about 10 kPa by the introduction of oxygen in the process B.
- the internal pressure of the film forming chamber 11 rises to about 15 kPa for a moment, but immediately reaches about 10 kPa.
- the film forming chamber 11 is maintained at an internal pressure of about 10 kPa. Thereafter, when nitrogen for dilution is introduced into the film forming chamber 11 in step E-1, the internal pressure of the film forming chamber 11 rises to about 50 kPa, and when the inside of the film forming chamber 11 is evacuated in step E-2. , Immediately decreases to 1 kPa or less.
- FIG. 31 is an explanatory view showing another maintenance method of the film forming apparatus of the present invention step by step.
- the substrate W (the substrate W2 after the film formation process) on which the film is formed is transferred from the film formation chamber 11 to the outside of the film formation chamber 11 (step A).
- the shutter 25 is closed, the exhaust pipe 29 is closed and the exhaust system is closed, and then the film formation chamber 11 is passed from the oxygen gas supply unit (first gas supply unit) 160 through the shower plate 75 of the cathode unit 68.
- Oxygen is introduced into the inside (FIG. 31 (a) [Step B]).
- the oxygen gas may be introduced into the film forming chamber 11 so that the oxygen concentration in the film forming chamber 11 is about 75%.
- the internal pressure in the film forming chamber 11 is increased from about 10 Pa to about 1 kPa.
- Oxygen gas is introduced from the oxygen gas supply unit (first gas supply unit) 160 so that the oxygen concentration in the film forming chamber 11 is about 75%, and then from the nitrogen gas supply unit (second gas supply unit) 150. Nitrogen gas can be introduced.
- the ignition unit 39 is energized with the internal pressure of the film forming chamber 11 being low, for example, about 1 kPa. Thereby, combustion by an oxidation reaction is started between polysilane which is a flammable by-product and the oxygen gas introduced into the film forming chamber 11 (FIG. 31B [Step C]).
- the temperature temporarily rises and the internal pressure rises (step C in FIG. 32). This temperature rise can be detected by a pressure gauge (first detection unit) 91 and an upper thermometer (third detection unit) 93.
- the temporary pressure increase is small. After ignition, the pressure decreases as oxygen is consumed.
- oxygen gas and nitrogen gas are supplied so that the internal pressure in the film forming chamber 11 becomes a high pressure of about 10 kPa.
- oxygen gas is introduced from the oxygen gas supply unit (first gas supply unit) 160 so that the oxygen concentration in the film formation chamber 11 is about 75%, and a nitrogen gas supply unit (second gas supply unit) Nitrogen gas is introduced from the gas supply unit 150.
- oxygen gas supplied by combustion is introduced so that the pressure becomes constant.
- the supply amount of oxygen gas is such that a flow rate sufficient to compensate for the decrease in oxygen gas (due to combustion reaction) of polysilane is ensured.
- the internal pressure in the film forming chamber 11 is kept substantially constant. For example, by continuously flowing oxygen at a maximum of about 200 SLM, the internal pressure in the film forming chamber 11 is maintained at 10 kPa and the oxygen concentration is maintained at about 75%.
- the pressure in the film forming chamber 11 is constantly monitored by a pressure gauge (first detection unit) 91 formed on the side surface of the film forming chamber 11 so that the inside of the film forming chamber 11 is in a predetermined state.
- the flow rate of the oxygen gas from the oxygen gas supply unit 160 may be controlled based on the output of the pressure gauge 91 so that the internal pressure (for example, 10 kPa) is maintained.
- Nitrogen gas may be introduced at a maximum flow rate of, for example, 200 SLM or less until, for example, the oxygen concentration in the film formation chamber 11 is reduced to about 15%. Thereby, the internal pressure in the film forming chamber 11 rises to, for example, about 50 kPa. Completion of combustion of the by-product can be detected by monitoring the temperature of the lower thermometer (second detection unit) 92 or by reducing / ending the amount of oxygen introduced. You can also
- the valve (not shown) of the exhaust pipe 29 is opened, the vacuum pump 30 is operated, and the nitrogen and oxygen mixed gas in the film forming chamber 11 is evacuated from the exhaust pipe 29 (FIG. 31 (e) [Step E-2]). And after making the inside of the film-forming chamber 11 into a normal pressure, the silicon oxide (combustion product) deposited on the bottom part of the film-forming chamber 11 is suction-removed using a vacuum cleaner etc., for example.
- FIG. 32 is a graph showing the pressure change in the film forming chamber 11 in each step of FIG.
- the pressure immediately before the ignition in the step C in which the byproduct is ignited by the ignition unit 39 is continuously supplied to the film forming chamber 11 from the oxygen gas supply unit 160 to continue the combustion of the byproduct. It controls so that it may become lower than the internal pressure in the film-forming chamber 11 of the process D to be performed (two-stage combustion).
- the internal pressure in the film forming chamber 11 rises from about 10 Pa to about 1 kPa due to the introduction of oxygen in the process B.
- the internal pressure of the film forming chamber 11 rises to about 4 kPa for a moment, but immediately becomes about 1 kPa.
- the internal pressure of the film forming chamber 11 is increased to about 10 kPa.
- the by-product is combusted while maintaining the internal pressure of the film forming chamber 11 at about 10 kPa.
- step E-1 when nitrogen for dilution is introduced into the film forming chamber 11 in step E-1, the internal pressure of the film forming chamber 11 rises to about 50 kPa, and when the inside of the film forming chamber 11 is evacuated in step E-2. , Immediately decreases to 1 kPa or less.
- the pressure increase at the time of ignition can be suppressed, and further, by increasing the pressure at the time of combustion, the combustion speed can be increased.
- even if a pressure rises immediately after ignition it is preferable to control below atmospheric pressure. This is because the film forming chamber 11 is manufactured for decompression.
- the temperature of the by-product was a lower thermometer (second detection unit) 92 (see FIGS. 3A to 3C) formed at the lower side of the film forming chamber 11, and the space temperature in the film forming chamber 11 is Each measurement was performed by an upper thermometer (third detection unit) 93 (see FIGS. 3A to 3C) formed in the upper part of the membrane chamber 11.
- the internal pressure (DG) in the film forming chamber 11 was measured by a pressure gauge (first detection unit) 91 formed on the side surface of the film forming chamber 11.
- the temperature of the by-product increases as the internal pressure (DG) in the film formation chamber 11 and the space temperature in the film formation chamber 11 decrease. (Tea powder temperature) rises slowly. Thereafter, it was confirmed that the by-product can be stably burned in a predetermined temperature (combustion temperature) range.
- the present invention is widely applicable to a film forming apparatus for forming a silicon film on a substrate using a CVD method.
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Abstract
Description
本願は、2010年06月25日に、日本に出願された特願2010-145350号に基づき優先権を主張し、その内容をここに援用する。
ポリシラン粉は茶褐色粉末(茶粉)であり、可燃性を有するため、その取り扱いには注意を必要とする。
成膜室内において連続して基板の成膜を行うと、副生成物が成膜室内の各所に付着する。その副生成物がその後の成膜時に基板上に付着したりすると薄膜太陽電池としての変換効率が低下してしまうなどの問題が生じる。
しかしながら、この方法では、水(水蒸気)で副生成物が液体となり、粘性を持つために除去しづらい。また、水を使うために、メンテナンス後のチャンバの立ち上げに時間がかかる、等の問題があった。
さらに、本発明は、シリコン膜を成膜する際に生じるポリシランを含む副生成物を、非成膜時に迅速かつ簡便に処理することが可能な成膜装置のメンテナンス方法を提供することを第二の目的とする。
(1)本発明の一態様に係る成膜装置は、減圧下において基板に被膜を形成する成膜室と、前記成膜室内に生じた可燃性の副生成物に点火する点火部と、前記成膜室に酸素ガスを供給する第一のガス供給部と、前記成膜室に窒素ガスを供給する第二のガス供給部と、前記成膜室内の圧力を測定する第一の検出部と、を備える。
本発明の上記態様に係る成膜装置のメンテナンス方法によれば、成膜室内の副生成物に点火し、酸素を供給して燃焼させる工程を備えることによって、可燃性の副生成物を不燃性の酸化物にすることができる。したがって、シリコン膜を成膜する際に生じるポリシランを含む副生成物を、非成膜時に迅速かつ簡便に処理することが可能になる。
(薄膜太陽電池)
最初に、本実施形態の成膜装置によって形成される被成膜物の一例である、薄膜太陽電池の構造について例示する。
図1は、薄膜太陽電池の断面図である。図1に示すように、薄膜太陽電池100は、表面を構成する基板Wと、基板W上に設けられた透明導電膜からなる上部電極101と、アモルファスシリコンで構成されたトップセル102と、トップセル102と後述するボトムセル104との間に設けられた透明導電膜からなる中間電極103と、マイクロクリスタルシリコンで構成されたボトムセル104と、透明導電膜からなるバッファ層105と、金属膜からなる裏面電極106とが積層されている。
図2は本発明の成膜装置(薄膜太陽電池製造装置)の一例を示す概略構成図である。
図2に示すように、成膜装置10は、複数の基板Wに対して同時に被膜(例えば、マイクロクリスタルシリコンで構成されたボトムセル104)をCVD法を用いて成膜可能な成膜室11と、成膜室11に搬入される成膜処理前基板W1と、成膜室11から搬出された成膜処理後基板W2と、を同時に収容可能な仕込・取出室13と、キャリア21(図9参照)に対して基板W(成膜処理前基板W1および成膜処理後基板W2)を脱着する基板脱着室15と、基板Wをキャリア21(図9参照)から脱着するための基板脱着ロボット(駆動機構)17と、別の処理工程へ基板Wを搬送するために収容する基板収容カセット(搬送部)19と、を備えている。
基板脱着ロボット17は床面に敷設されたレール18上を移動できるようになっており、全ての基板成膜ライン16への基板Wの受け渡しを1台の基板脱着ロボット17でできるようになっている。
成膜室11と仕込・取出室13とで構成されるプロセスモジュール14は一体化されており、トラックに積載可能な大きさで形成されている。
図3A~図3Cに示すように、成膜室11は略箱型に形成されている。成膜室11の仕込・取出室13と接続される側面23には、基板Wが搭載されたキャリア21が通過可能なキャリア搬出入口24が3箇所形成されている。キャリア搬出入口24には、キャリア搬出入口24を開閉するシャッタ(第一開閉部)25が設けられている。
シャッタ25を閉止したときには、キャリア搬出入口24は気密性を確保して閉止される。側面23と対向する側面27には、基板Wに成膜を施すための電極ユニット31が3基取り付けられている。電極ユニット31は、成膜室11から着脱可能に構成されている。
成膜室11の側面下部28には、成膜室11内を真空排気するための排気管29が接続されており、排気管29には真空ポンプ30が設けられている。
SiCヒータは、例えば、赤熱部39aを1100℃程度まで加熱することができる。このような点火部39は、後述する可燃性の副生成物への点火時に通電される。
点火部39の赤熱部39aは、その先端が成膜室11の底面に向けて延びるように傾斜して設けられているのが好ましい。これによって、成膜室11の底面に堆積する可燃性の副生成物Qに対して、確実に点火をすることができる。
副生成物への延焼が最も遅い部分は、副生成物の堆積が多く、点火部39から離れた、底面の各辺の中間付近になる場合が多い。
下部温度計92の設置位置は下部に堆積する副生成物に接触していれば、下部に堆積する副生成物の燃焼を確認することができる。
上部温度計93は、副生成物が燃焼した際に成膜室11内の空間温度、即ち成膜室11内のガスの温度を測定するものである。このため、上部温度計93は、成膜室11の上部で、できるだけ中央付近に設置されることが好ましい。但し、基板やキャリアの搬送部が設置される場合、その間に設置されてもよい。
点火部39で点火すると、成膜室11内のガスの燃焼により成膜室内が一瞬高温となる。上部温度計93は、この温度上昇を確認することで、点火状況を検知することが可能である。
酸素ガス供給部160や窒素ガス供給部150は、不図示の配管を介して、後述する成膜室11のカソードユニット68(図4D参照)に供給される。
酸素ガス供給部160と窒素ガス供給部150の導入位置は、カソードユニット68に限定されず、成膜室11に導入されればよい。さらに、酸素ガス供給部160と窒素ガス供給部150の導入位置は異なってもよい。
電極ユニット31は、成膜室11の側面27に形成された3箇所の開口部26に着脱可能構成されている(図3B参照)。
電極ユニット31は、下部に車輪61が設けられており床面上を移動可能に構成されている。
車輪61が取り付けられた底板部62には側板部63が鉛直方向に立設されている。この側板部63は、成膜室11の側面27の開口部26を閉塞する大きさを有している。つまり、側板部63が成膜室11の壁面の一部を成している。
2つのアノードユニット90,90は側板部63に設けられた駆動装置71により、互いに近接・離反する方向(水平方向)に移動可能に構成され、基板Wとカソードユニット68との離間距離を制御可能にしている。
その後、成膜を行い、成膜終了後にアノードユニット90,90が互いに離反する方向に移動して、基板Wを電極ユニット31から容易に取り出すことができるように構成されている。
カソードユニット68には、酸素ガス供給部(第一のガス供給部)160や窒素ガス供給部(第二のガス供給部)150が、不図示の配管を介して接続される。
アノードユニット90(アノード67)に対向する面には、それぞれ小孔(不図示)が複数形成されたシャワープレート75が配置されており、成膜ガスを基板Wに向かって噴出できるようになっている。
シャワープレート75,75は、マッチングボックス72と接続されたカソード(高周波電極)である。
2枚のシャワープレート75,75の間には、マッチングボックス72と接続されたカソード中間部材76が設けられている。
この実施形態にあっては、空間部77がそれぞれのシャワープレート75、75毎に対応して別々に形成されているので、カソードユニット68は、2系統のガス供給路を有していることになる。
排気口80は、カソードユニット68の周縁部に沿って複数形成されており、全周に亘って略均等に排気できるように構成されている。
カソードユニット68の下部における排気ダクト79の成膜室11内へ向いた面82には開口部(不図示)が形成されており、排気した成膜ガスなどを成膜室11内へ排出できるようになっている。
図6に示すように、プッシュ-プル機構38は、キャリア21を係止するための係止部48と、係止部48の両端に設けられ、移動レール37と略平行に配されたガイド部材49と、係止部48をガイド部材49に沿って移動させるための移動装置50と、を備えている。
基板収容カセット19の下部には、キャスター47が設けられており、別の処理装置へと移動できるようになっている。なお、基板収容カセット19において、基板Wの被成膜面を重力方向と略平行になるようにした状態で左右方向に複数枚収容できるようにしてもよい。
挟持部59は、基板Wの表面WO(被成膜面)および裏面WU(背面)に当接する挟持片59A,59Bを有しているが(図21参照)、この挟持片59A,59Bの離隔距離は、バネなどを介して可変可能になっている。つまり、アノードユニット90(アノード67)の移動に応じて、挟持片59Aが挟持片59Bに対して近接・離反する方向に沿って移動可能に構成されている(詳細は後述する)。ここで、キャリア21は、一つの移動レール37上に1個(1対(2枚)の基板を保持できる1個のキャリア)取り付けられている。つまり、一組の成膜装置10には3個(3対6枚基板保持)のキャリア21が取り付けられている。
次に、本実施形態の成膜装置10を用いて、基板Wに被膜を成膜する方法を説明する。なお、この説明においては一つの基板成膜ライン16の図面を用いるが、他の三つの基板成膜ライン16も略同一の流れで基板Wを成膜する。
図15Aに示すように、プッシュ-プル機構38の係止部48に成膜処理後基板W2が取り付けられたキャリア21Aを係止する。そして、係止部48に取り付けられている移動装置50の移動アーム58を揺動させる。このとき移動アーム58の長さは可変する。
上述した動きの逆の動きをさせることで、仕込・取出室13のキャリアを成膜室11へ移動させることができる。
ここで、図21に示すように、マスク78は挟持片59Aの表面と基板Wの外縁部を覆うように形成されているとともに、挟持片59Aもしくは基板Wの外縁部と密接可能に形成されている。すなわち、マスク78と、挟持片59Aもしくは基板Wの外縁部との合わせ面は、シール面の役割を有しており、これらマスク78と、挟持片59Aもしくは基板Wの外縁部との間から成膜ガスがアノード67側にほとんど漏れないようになっている。
これにより、成膜ガスが広がる範囲が制限され、不要な範囲が成膜されることを抑制することができる。これによりクリーニング範囲を挟くすること、およびクリーニング頻度を減少させることができ、装置の稼働率が向上する。
なお、一度の成膜処理工程で複数の層を成膜する際には、供給する成膜ガス材料を所定時間毎に切り替えることで実施することができる。
つまり、成膜処理前基板W1を成膜室11に収容した後に通常実施する加熱工程、および、成膜処理後基板W2を仕込・取出室13から搬出する前に通常実施する冷却工程を省略することができる。結果として、生産性を向上することができるとともに、従来の加熱工程・冷却工程に用いていた設備を取り止めることができるため、製造コストを低減することができる。
本発明の一実施形態に係る成膜装置のメンテナンス方法について、図3A~図3C、図4A~図4D、および図29を参照して説明する。図29は、本発明の成膜装置のメンテナンス方法を段階的に示した説明図である。図29において円筒は、成膜室11を模式的に表している。
本発明の実施形態に係る成膜装置によって基板Wにマイクロクリスタルシリコンの被膜を成膜すると、成膜室11内に、茶褐色の粉末(茶粉)であるポリシランを含む可燃性の副生成物が生じる。こうした副生成物が成膜室11内に堆積した状態で成膜を続けると、成膜した被膜の特性が低下する。このため、例えば、基板Wに50~300回成膜を行うたびに、以下に示す副生成物の除去を行う。
こうした成膜室11内への酸素ガスの導入は、例えば、成膜室11内の酸素濃度が75%程度になるように行えばよい。これによって、成膜室11内の内圧は10Pa程度から10kPa程度に高められる。成膜室11内の酸素濃度が75%程度になるように酸素ガス供給部(第一のガス供給部)160から酸素ガスを導入し、窒素ガス供給部(第二のガス供給部)150から窒素ガスを導入することができる。
副生成物の燃焼の完了は、下部温度計(第二の検出部)92の温度のモニタリングや、酸素の導入量の減少/終了により検出することもでき、また、一定時間の経過で完了と擬制することもできる。
図30のグラフによれば、工程Bでの酸素の導入によって、成膜室11内の内圧は10Pa程度から10kPa程度に上昇する。そして、工程Cで副生成物に点火されると、成膜室11の内圧は一瞬、15kPa程度まで上がるが、すぐに10kPa程度になる。そして、工程Dで成膜室11内に燃焼によって消費された酸素と同量の酸素を導入することで、成膜室11は、ほぼ10kPa程度の内圧に保たれる。その後、工程E-1で成膜室11内に希釈用の窒素を導入すると、成膜室11の内圧は50kPa程度まで上昇し、工程E-2で成膜室11内が真空排気されると、速やかに1kPa以下に低下する。
本発明の成膜装置の別なメンテナンス方法について、図3A~図3C、図4A~図4D、および図31を参照して説明する。図31は、本発明の成膜装置の別なメンテナンス方法を段階的に示した説明図である。
この実施形態のメンテナンス方法では、成膜室11内から被膜の形成された基板W(成膜処理後基板W2)が成膜室11外へ搬送される(工程A)。そして、シャッタ25を閉状態とし、排気管29を閉じて排気系統を閉鎖した後、酸素ガス供給部(第一のガス供給部)160からカソードユニット68のシャワープレート75を介して成膜室11内に酸素を導入する(図31(a)[工程B])。
こうした成膜室11内への酸素ガスの導入は、例えば、成膜室11内の酸素濃度が75%程度になるように行えばよい。これによって、成膜室11内の内圧は10Pa程度から1kPa程度に高められる。成膜室11内の酸素濃度が75%程度になるように酸素ガス供給部(第一のガス供給部)160から酸素ガスを導入し、窒素ガス供給部(第二のガス供給部)150から窒素ガスを導入することができる。
その後、成膜室11内に堆積した副生成物の燃焼が完了したら、窒素ガス供給部(第二のガス供給部)150から成膜室11内に窒素ガスを導入し(図31(d)[工程E-1])、成膜室11内の濃度を希釈する。
副生成物の燃焼の完了は、下部温度計(第二の検出部)92の温度のモニタリングや、酸素の導入量の減少/終了により検出することもできるし、一定時間の経過で完了と擬制することもできる。
この実施形態では、点火部39によって副生成物に点火する工程Cの点火直前の圧力を、酸素ガス供給部160から成膜室11内に酸素ガスを供給し続けて副生成物の燃焼を継続させる工程Dの成膜室11内の内圧より低くするように制御する(2段階燃焼)。
そして、工程Dで成膜室11内に燃焼によって消費された酸素と同量の酸素を導入する際に、成膜室11の内圧を10kPa程度にまで高める。工程Dでは、成膜室11の内圧を10kPa程度に保って副生成物の燃焼を行う。その後、工程E-1で成膜室11内に希釈用の窒素を導入すると、成膜室11の内圧は50kPa程度まで上昇し、工程E-2で成膜室11内が真空排気されると、速やかに1kPa以下に低下する。
点火前の圧力を低くすることで、点火時の圧力上昇を押えることができ、さらに、燃焼時の圧力を高くすることで、燃焼速度を上げることができる。なお、点火直後に圧力が上昇しても、大気圧より低く制御されることが好ましい。成膜室11は減圧用に製作されているためである。
11 成膜室
13 仕込・取出室
14 プロセスモジュール
15 基板脱着室
17 基板脱着ロボット(駆動機構)
19 基板収容カセット(搬送部)
21 キャリア(第一キャリア、第二キャリア)
25 シャッタ(第一開閉部)
36 シャッタ(第二開閉部)
104 ボトムセル(所望の膜)
W 基板
W1 成膜処理前基板
W2 成膜処理後基板
150 窒素ガス供給部(第二のガス供給部)
160 酸素ガス供給部(第一のガス供給部)
Claims (9)
- 減圧下において基板に被膜を形成する成膜室と、
前記成膜室内に生じた可燃性の副生成物に点火する点火部と、
前記成膜室に酸素ガスを供給する第一のガス供給部と、
前記成膜室に窒素ガスを供給する第二のガス供給部と、
前記成膜室内の圧力を測定する第一の検出部と、
を備えたことを特徴とする成膜装置。 - 請求項1に記載した成膜装置であって、
前記成膜室には、前記副生成物の温度を測定する第二の検出部が設けられていることを特徴とする。 - 請求項1または2に記載した成膜装置であって、
前記成膜室には、この成膜室内の空間温度を測定する第三の温度検出部が設けられていることを特徴とする。 - 減圧下において基板に被膜を形成する成膜装置のメンテナンス方法であって、
前記成膜装置の成膜室内から被膜が形成された前記基板をこの成膜室外へ搬送し、
前記成膜室に酸素ガスを導入し、
成膜によって生じた可燃性の副生成物に点火し、
前記副生成物を燃焼させ、
前記成膜室内に窒素ガスを導入し、
前記副生成物を燃焼させる際に生じた不燃性の酸化副生成物を前記成膜室から除去する
ことを特徴とする成膜装置のメンテナンス方法。 - 前記副生成物を燃焼させる際に、前記成膜室内の圧力が略一定となるように前記酸素ガスを前記成膜室に補給することを特徴とする請求項4に記載の成膜装置のメンテナンス方法。
- 前記副生成物を燃焼させる際に、前記成膜室の排気系統は閉鎖されることを特徴とする請求項4または5に記載の成膜装置のメンテナンス方法。
- 前記可燃性の副生成物に点火する際及び前記副生成物を燃焼させる際には、前記成膜室内の圧力が略同一になるように圧力制御を行うことを特徴とする請求項4ないし6のいずれか1項に記載した成膜装置のメンテナンス方法。
- 前記可燃性の副生成物に点火する際には、前記副生成物を燃焼させる時よりも前記成膜室内の圧力が低圧となるように圧力制御を行うことを特徴とする請求項4ないし6のいずれか1項に記載した成膜装置のメンテナンス方法。
- 前記成膜室から排気される排気ガスを窒素ガスで希釈することを特徴とする請求項4ないし8のいずれか1項に記載した成膜装置のメンテナンス方法。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112011102142T DE112011102142T8 (de) | 2010-06-25 | 2011-06-22 | Filmbildungsvorrichtung und Verfahren zum Instandhalten einer Filmbildungsvorrichtung |
| JP2012521502A JP5478725B2 (ja) | 2010-06-25 | 2011-06-22 | 成膜装置、成膜装置のメンテナンス方法 |
| US13/805,929 US20130199572A1 (en) | 2010-06-25 | 2011-06-22 | Film-forming apparatus, and method for maintaining film-forming apparatus |
| KR1020127034060A KR101431168B1 (ko) | 2010-06-25 | 2011-06-22 | 성막 장치, 성막 장치의 유지보수 방법 |
| CN201180030323.XA CN102959681B (zh) | 2010-06-25 | 2011-06-22 | 成膜装置、成膜装置的维护方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-145350 | 2010-06-25 | ||
| JP2010145350 | 2010-06-25 |
Publications (1)
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| WO2011162297A1 true WO2011162297A1 (ja) | 2011-12-29 |
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ID=45371473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/064288 Ceased WO2011162297A1 (ja) | 2010-06-25 | 2011-06-22 | 成膜装置、成膜装置のメンテナンス方法 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20130199572A1 (ja) |
| JP (1) | JP5478725B2 (ja) |
| KR (1) | KR101431168B1 (ja) |
| CN (1) | CN102959681B (ja) |
| DE (1) | DE112011102142T8 (ja) |
| TW (1) | TWI479670B (ja) |
| WO (1) | WO2011162297A1 (ja) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09107117A (ja) * | 1995-10-12 | 1997-04-22 | Sanyo Electric Co Ltd | 半導体装置の製造方法 |
| JP2000173925A (ja) * | 1998-12-02 | 2000-06-23 | Toshiba Corp | 半導体製造装置 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19639808C1 (de) * | 1996-09-27 | 1997-12-04 | Thomas Waescher | Verfahren und Vorrichtung zum Entfernen von Gasen |
| US6277347B1 (en) * | 1997-02-24 | 2001-08-21 | Applied Materials, Inc. | Use of ozone in process effluent abatement |
| JP2001131753A (ja) | 1999-11-09 | 2001-05-15 | Kanegafuchi Chem Ind Co Ltd | プラズマcvd装置のクリーニング方法 |
| KR100414156B1 (ko) * | 2001-05-29 | 2004-01-07 | 삼성전자주식회사 | 집적회로소자의 캐패시터 제조방법 |
| US6825081B2 (en) * | 2001-07-24 | 2004-11-30 | Micron Technology, Inc. | Cell nitride nucleation on insulative layers and reduced corner leakage of container capacitors |
| US20080011332A1 (en) * | 2002-04-26 | 2008-01-17 | Accretech Usa, Inc. | Method and apparatus for cleaning a wafer substrate |
| WO2008005517A1 (en) * | 2006-07-07 | 2008-01-10 | Accretech Usa, Inc. | Processing chamber having labyrinth seal |
| JP4245012B2 (ja) * | 2006-07-13 | 2009-03-25 | 東京エレクトロン株式会社 | 処理装置及びこのクリーニング方法 |
| EP1883103A3 (en) * | 2006-07-27 | 2008-03-05 | Interuniversitair Microelektronica Centrum | Deposition of group III-nitrides on Ge |
| JP5178342B2 (ja) * | 2008-06-23 | 2013-04-10 | キヤノン株式会社 | 堆積物除去方法及び堆積膜形成方法 |
| JP2010080850A (ja) * | 2008-09-29 | 2010-04-08 | Toshiba Corp | 半導体製造装置及びそのクリーニング方法 |
| JP2010145350A (ja) | 2008-12-22 | 2010-07-01 | Toshiba Corp | 放射線検出器 |
-
2011
- 2011-06-22 WO PCT/JP2011/064288 patent/WO2011162297A1/ja not_active Ceased
- 2011-06-22 KR KR1020127034060A patent/KR101431168B1/ko not_active Expired - Fee Related
- 2011-06-22 JP JP2012521502A patent/JP5478725B2/ja not_active Expired - Fee Related
- 2011-06-22 CN CN201180030323.XA patent/CN102959681B/zh not_active Expired - Fee Related
- 2011-06-22 DE DE112011102142T patent/DE112011102142T8/de not_active Expired - Fee Related
- 2011-06-22 US US13/805,929 patent/US20130199572A1/en not_active Abandoned
- 2011-06-24 TW TW100122312A patent/TWI479670B/zh not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09107117A (ja) * | 1995-10-12 | 1997-04-22 | Sanyo Electric Co Ltd | 半導体装置の製造方法 |
| JP2000173925A (ja) * | 1998-12-02 | 2000-06-23 | Toshiba Corp | 半導体製造装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5478725B2 (ja) | 2014-04-23 |
| JPWO2011162297A1 (ja) | 2013-08-22 |
| CN102959681A (zh) | 2013-03-06 |
| TW201214741A (en) | 2012-04-01 |
| US20130199572A1 (en) | 2013-08-08 |
| KR20130025414A (ko) | 2013-03-11 |
| TWI479670B (zh) | 2015-04-01 |
| DE112011102142T8 (de) | 2013-06-13 |
| KR101431168B1 (ko) | 2014-08-18 |
| DE112011102142T5 (de) | 2013-04-11 |
| CN102959681B (zh) | 2015-09-16 |
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