WO2010038515A1 - 気化器およびそれを用いた成膜装置 - Google Patents
気化器およびそれを用いた成膜装置 Download PDFInfo
- Publication number
- WO2010038515A1 WO2010038515A1 PCT/JP2009/060762 JP2009060762W WO2010038515A1 WO 2010038515 A1 WO2010038515 A1 WO 2010038515A1 JP 2009060762 W JP2009060762 W JP 2009060762W WO 2010038515 A1 WO2010038515 A1 WO 2010038515A1
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- Prior art keywords
- discharge port
- liquid
- chamber
- heated
- carrier gas
- Prior art date
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- 239000006200 vaporizer Substances 0.000 title claims abstract description 50
- 230000008021 deposition Effects 0.000 title description 5
- 239000012159 carrier gas Substances 0.000 claims abstract description 94
- 230000008016 vaporization Effects 0.000 claims abstract description 94
- 239000007789 gas Substances 0.000 claims abstract description 80
- 238000009834 vaporization Methods 0.000 claims abstract description 65
- 239000011344 liquid material Substances 0.000 claims abstract description 63
- 238000010438 heat treatment Methods 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims description 123
- 239000002994 raw material Substances 0.000 claims description 70
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract 1
- 239000010408 film Substances 0.000 description 32
- 239000011148 porous material Substances 0.000 description 16
- 239000003595 mist Substances 0.000 description 14
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 238000000151 deposition Methods 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 229910052735 hafnium Inorganic materials 0.000 description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 150000002902 organometallic compounds Chemical class 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 235000012093 Myrtus ugni Nutrition 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- -1 TEMA Chemical class 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 244000061461 Tema Species 0.000 description 1
- SEQDDYPDSLOBDC-UHFFFAOYSA-N Temazepam Chemical compound N=1C(O)C(=O)N(C)C2=CC=C(Cl)C=C2C=1C1=CC=CC=C1 SEQDDYPDSLOBDC-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
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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
- C23C16/448—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 generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
-
- 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
- C23C16/448—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 generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
- C23C16/4481—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 generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials by evaporation using carrier gas in contact with the source material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/3244—Gas supply means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02172—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides
- H01L21/02175—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal
- H01L21/02181—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal the material containing hafnium, e.g. HfO2
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02172—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides
- H01L21/02175—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal
- H01L21/02189—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal the material containing zirconium, e.g. ZrO2
-
- 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
- H01L21/02612—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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/314—Inorganic layers
- H01L21/316—Inorganic layers composed of oxides or glassy oxides or oxide based glass
- H01L21/31604—Deposition from a gas or vapour
- H01L21/31641—Deposition of Zirconium oxides, e.g. ZrO2
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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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/314—Inorganic layers
- H01L21/316—Inorganic layers composed of oxides or glassy oxides or oxide based glass
- H01L21/31604—Deposition from a gas or vapour
- H01L21/31645—Deposition of Hafnium oxides, e.g. HfO2
Definitions
- the present invention relates to a vaporizer that vaporizes a liquid raw material to generate a raw material gas, and a film forming apparatus using the vaporizer.
- organic raw materials such as organometallic compounds are supplied to the deposition chamber and reacted with other gases such as oxygen and ammonia.
- a chemical vapor deposition (CVD) method for forming a film is known. Since organic materials used in such a CVD method are often liquid at normal temperature and pressure, it is necessary to gasify the organic materials and supply them to the film formation chamber. Therefore, normally, a liquid organic raw material is vaporized in a vaporizer to generate a raw material gas.
- a high temperature carrier gas is allowed to flow between a discharge port of a liquid material outflow passage (nozzle) and a diaphragm valve, and the liquid material discharged from the discharge port is vaporized to form a material.
- Generate gas e.g., a liquid raw material is made into a droplet by conveying the vibration of an ultrasonic vibrator to the liquid raw material discharged from the liquid raw material discharge part (for example, a nozzle, a pipe, a hole, etc.). (Mist). Then, a carrier gas flow is formed in the vicinity of the liquid source discharge port, and a liquid material in the form of droplets is carried on the carrier gas flow and transferred to the heating space to be vaporized, thereby generating a source gas.
- liquid raw materials include organometallic compounds such as TEMA, TEMAZ (tetrakisethylmethylamino ⁇ zirconium) and TEMAH (tetrakisethylmethylamino ⁇ hafnium).
- the vaporizer is configured to reduce the orifice diameter of the nozzle that discharges the liquid material to form liquid droplets as small as possible in order to efficiently vaporize the liquid material. Therefore, when a liquid material containing a component that easily reacts with moisture as described above is discharged from the discharge port, the product (oxide) generated by reacting with the moisture contained in the carrier gas flowing in the vicinity of the liquid material adheres to the discharge port. As a result, there was a possibility that the discharge port was blocked by the undesired deposits. This makes it impossible to obtain a raw material gas with a sufficient flow rate. In addition, since the nozzles must be frequently replaced and cleaned, the throughput decreases accordingly.
- a carrier gas is allowed to flow between a nozzle discharge port and a diaphragm valve to vaporize.
- a diaphragm valve and a nozzle are provided for the purpose of increasing vaporization efficiency. If the entire portion is heated, the higher the heating temperature, the higher the possibility that the liquid material flowing in the nozzle will be thermally decomposed, which is not appropriate. On the contrary, if the heating temperature is lowered, the vaporization efficiency of the liquid raw material is lowered.
- an object of the present invention is to generate a raw material gas by vaporizing a liquid raw material discharged from a nozzle outlet in a heated vaporizing chamber.
- an object of the present invention is to provide a vaporizer capable of preventing the discharge port of the liquid material from being blocked by deposits and a film forming apparatus using the vaporizer.
- the inventors of the present invention have repeatedly conducted experiments and found that, by heating the discharge port of the liquid material, even if the discharge port is exposed to carrier gas, deposits do not adhere to the discharge port.
- the following present invention has been made paying attention to this point.
- a liquid reservoir chamber to which a liquid raw material is supplied at a predetermined pressure, a liquid chamber disposed so as to protrude from the liquid reservoir chamber, and a liquid in the liquid reservoir chamber are provided.
- a mixing chamber for mixing the liquid raw material discharged from the discharge port with the carrier gas and ejecting the liquid raw material to the vaporizing chamber, a first heating unit for heating the vaporizing chamber from the outside, and the target Heating the heating element from the outside Carburetor is provided, characterized in that it comprises a second heating unit that.
- a film forming process is performed on a substrate to be processed by introducing the source gas from a vaporizer that vaporizes a liquid source and generates a source gas.
- a film forming apparatus having a film forming chamber, wherein the vaporizer is disposed so as to protrude from the liquid reservoir chamber and a liquid reservoir chamber to which a liquid raw material is supplied at a predetermined pressure, and the liquid in the liquid reservoir chamber
- a nozzle that discharges the raw material
- a discharge port that opens at the tip of the nozzle
- a vaporization chamber that vaporizes the liquid raw material discharged from the discharge port and generates a raw material gas
- a raw material gas from the vaporization chamber A delivery port for delivery to the film formation chamber, a tubular heated member provided between the tip of the nozzle and the vaporization chamber so as to cover the periphery of the discharge port, and provided in the heated member Carrier gas that is ejected from the vicinity of the discharge port
- An outlet a mixing chamber that is partitioned in the member to be heated, mixes the liquid raw material discharged from the discharge port with the carrier gas, and jets it to the vaporizing chamber, and heats the vaporizing
- the liquid source liquid droplets discharged from the nozzle outlet are mixed with the carrier gas ejected from the carrier gas ejection port in the mixing chamber in the heated member, and the first heating is performed. It is ejected toward the vaporization chamber heated by the part.
- the liquid material droplets are vaporized in the vaporization chamber to be a raw material gas, and are sent to the outside (for example, the film formation chamber) from the delivery port.
- the heating temperature of the member to be heated can be prevented from being adhered to the discharge port without being thermally decomposed while the liquid material flows to the discharge port.
- the member to be heated by heating the member to be heated, it is possible to heat not only the liquid material discharge port but also the mixing chamber mixed with the carrier gas.
- the moisture that causes the deposits to be generated that is, the moisture contained in the carrier gas can be efficiently evaporated in the mixing chamber, thereby preventing the deposits from adhering to the discharge port more effectively. it can.
- the heated member is made of metal and the nozzle is made of resin. According to this, heat from the member to be heated can be made difficult to be transmitted, so that it is possible to effectively prevent the entire nozzle from being heated. Thereby, even if the heating temperature by the second heating unit is set high, the liquid raw material flowing in the nozzle can be more effectively prevented from adhering to the discharge port without being thermally decomposed in the middle. .
- the mixing chamber is partitioned by a throttle portion provided in the member to be heated, and the throttle portion is formed with a throttle hole that communicates between the mixing chamber and the vaporization chamber.
- the mixing chamber is preferably constituted by a central space below the discharge port and an annular space surrounding the periphery, and the carrier gas outlet is disposed so that carrier gas is jetted into the annular space.
- the carrier gas ejected from the carrier gas ejection port spreads in the annular space and flows from the entire annular space to the central space. Thereby, the liquid material droplets discharged from the discharge port can be efficiently guided to the throttle hole.
- an upper taper portion that gradually increases the diameter of the throttle hole toward the mixing chamber side is provided on the mixing chamber side of the throttle portion, and the upper taper portion protrudes toward the discharge port. It is preferable to form as follows. According to this, the wall surface of the annular space can be formed outside the upper tapered portion in the mixing chamber by providing the upper tapered portion so as to protrude into the mixing chamber. Moreover, since the throttle hole is expanded toward the inlet side (upstream side), the carrier gas can be easily guided from the annular space to the central space.
- a lower tapered portion that gradually increases the diameter of the throttle hole is provided on the vaporizing chamber side of the throttle portion toward the vaporizing chamber side, and the lower tapered portion protrudes toward the vaporizing chamber. You may make it form so.
- the throttle hole is expanded toward the outlet side (downstream side), it is possible to further increase the flow rates of the liquid material droplets and the carrier gas ejected from the throttle hole. As a result, the liquid raw material can be supplied to the vaporizing chamber as finer droplets.
- a first temperature sensor that detects the temperature of the vaporization chamber; a second temperature sensor that detects the temperature of the discharge port; and a temperature from each of the temperature sensors to monitor at least the temperature of the discharge port.
- a control unit may be provided that controls the temperature at which the deposits do not adhere to the discharge port, and controls the temperature of the vaporization chamber to be higher than the temperature of the discharge port.
- the vaporization efficiency in the vaporization chamber while maintaining the temperature of the discharge port at least at a temperature at which deposits do not adhere to the discharge port. Further, by controlling the temperature of the vaporizing chamber so that the temperature of the discharge port becomes higher, a temperature gradient can be formed such that the temperature increases from the upstream side to the downstream side as viewed in the entire vaporizer. That is, the temperature of the portion where the liquid material flows is lowest, and the discharge port is heated to a temperature at which deposits do not adhere to the discharge port, and the vaporization chamber is heated to a higher temperature. As a result, the liquid source can be prevented from being thermally decomposed while flowing through the pores to the discharge port, so that deposits can be prevented from adhering to the discharge port, and the vaporization efficiency can be improved in the vaporization chamber. it can.
- liquid material discharge port can be heated partially and separately from the vaporization chamber, it is possible to prevent the liquid material discharge port from being clogged with deposits, and in the vaporization chamber. Vaporization efficiency can also be increased.
- FIG. 1 It is a figure which shows schematic structure of the film-forming apparatus concerning embodiment of this invention. It is a longitudinal cross-sectional view which shows schematic structure of the vaporizer
- FIG. 1 is a diagram for explaining a schematic configuration example of a film forming apparatus according to the present embodiment.
- a film forming apparatus 100 shown in FIG. 1 forms a metal oxide film on a substrate to be processed, for example, a semiconductor wafer (hereinafter simply referred to as “wafer”) W by a CVD method, and contains Hf (hafnium).
- wafer semiconductor wafer
- Hf hafnium
- a liquid source supply source 110 that supplies a liquid source made of an organic compound, a carrier gas supply source 120 that supplies a carrier gas, and a vaporizer that generates a source gas by vaporizing the liquid source supplied from the liquid source supply source 110 300, a film forming chamber 200 for forming, for example, an HfO 2 film on the wafer W using the source gas generated by the vaporizer 300, and a control unit 150 for controlling each part of the film forming apparatus 100.
- an inert gas such as Ar can be used as the carrier gas.
- the liquid source supply source 110 and the vaporizer 300 are connected by a liquid source supply pipe 112, and the carrier gas supply source 120 and the vaporizer 300 are connected by a carrier gas supply pipe 122.
- the chambers 200 are connected by a source gas supply pipe 132.
- the liquid source supply pipe 112 is provided with a liquid source flow control valve 114
- the carrier gas supply pipe 122 is provided with a carrier gas flow control valve 124
- the source gas supply pipe 132 is provided with a source gas flow control valve 134.
- the liquid raw material flow rate control valve 114, the carrier gas flow rate control valve 124, and the raw material gas flow rate control valve 134 are each adjusted in opening degree by a control signal from the control unit 150.
- the control unit 150 outputs a control signal according to the flow rate of the liquid source flowing through the liquid source supply pipe 112, the flow rate of the carrier gas flowing through the carrier gas supply pipe 122, and the flow rate of the source gas flowing through the source gas supply pipe 132. Is preferred.
- the film formation chamber 200 has, for example, a substantially cylindrical side wall, and includes a susceptor 222 on which the wafer W is horizontally placed in an internal space surrounded by the side wall, the top wall 210 and the bottom wall 212.
- the side wall, the top wall 210 and the bottom wall 212 are made of a metal such as aluminum or stainless steel.
- the susceptor 222 is supported by a plurality of cylindrical support members 224 (only one is shown here).
- a heater 226 is embedded in the susceptor 222, and the temperature of the wafer W placed on the susceptor 222 can be adjusted by controlling the power supplied from the power source 228 to the heater 226.
- An exhaust port 230 is formed in the bottom wall 212 of the film forming chamber 200, and an exhaust system 232 is connected to the exhaust port 230. Then, the inside of the film formation chamber 200 can be decompressed to a predetermined degree of vacuum by the exhaust system 232.
- a shower head 240 is attached to the top wall 210 of the film forming chamber 200.
- a raw material gas supply pipe 132 is connected to the shower head 240, and the raw material gas generated by the vaporizer 300 is introduced into the shower head 240 via the raw material gas supply pipe 132.
- the shower head 240 has a diffusion chamber 242 and a number of gas discharge holes 244 communicating with the diffusion chamber 242.
- the source gas introduced into the diffusion chamber 242 of the shower head 240 via the source gas supply pipe 132 is discharged from the gas discharge hole 244 toward the wafer W on the susceptor 222.
- the liquid source supply source 110 stores, for example, HTB (hafnium tarbutoxide) as a liquid source, and the liquid source is vaporized through the liquid source supply pipe 112. To send to.
- HTB hafnium tarbutoxide
- the source gas from the vaporizer 300 is supplied as follows.
- the liquid source from the liquid source supply source 110 is supplied to the vaporizer 300 via the liquid source supply line 112 and the carrier gas from the carrier gas supply source 120 is supplied via the carrier gas supply line 122,
- a liquid source is discharged in the form of droplets together with a carrier gas into a vaporization chamber provided in the vaporizer 300, and the liquid source is vaporized to generate a source gas.
- the source gas generated in the vaporizer 300 is supplied to the film formation chamber 200 via the source gas supply pipe 132, and a desired film formation process is performed on the wafer W in the film formation chamber 200.
- a specific configuration example of the vaporizer 300 will be described later.
- FIG. 2 is a longitudinal sectional view showing a schematic configuration example of the vaporizer according to the present embodiment.
- the vaporizer 300 is roughly divided into a liquid material supply unit 300A that discharges a liquid material in the form of droplets (mist), and a liquid material that is discharged by vaporizing the discharged liquid material. It is comprised from the source gas production
- the liquid source supply unit 300A includes a liquid reservoir chamber 310 that temporarily stores a liquid source supplied from the liquid source supply pipe 112 at a predetermined pressure, and a nozzle 320 that is disposed so as to protrude downward from the liquid reservoir chamber 310.
- a pore 316 constituting a flow path for leading the liquid material in the liquid reservoir chamber 310 to the discharge port 322 of the nozzle 320, a valve body 334 for opening and closing the liquid inlet 312 on the liquid reservoir chamber 310 side of the pore 316, And an actuator 330 that drives the valve body 334.
- the liquid material supply unit 300A includes a liquid material introduction unit 311 into which the liquid material is introduced.
- the liquid raw material introduction part 311 is made of a block-like metal made of Al, stainless steel, or the like, and the liquid reservoir chamber 310 is defined in the interior thereof.
- the liquid material is supplied to the liquid reservoir 310 at a predetermined pressure via the liquid material supply pipe 112.
- the liquid material introduction part 311 is provided with a nozzle 320 so as to protrude downward.
- the nozzle 320 in the present embodiment is made of, for example, a resin such as polyimide or Teflon (registered trademark) so that heat from the surroundings is not easily transferred.
- the base end portion of the nozzle 320 is fixed to the lower surface of the liquid raw material introduction portion 311 by an attachment member 321 made of a block-shaped metal made of Al, stainless steel, or the like.
- the contact surface between the liquid material introduction part 311 and the attachment member 321 is sealed with an O-ring or the like.
- an O-ring 318 is provided between the liquid source introduction unit 311 and the nozzle 320
- an O-ring 319 is provided between the liquid source introduction unit 311 and the attachment member 321.
- the pores 316 are formed so as to penetrate from the liquid reservoir chamber 310 to the discharge port 322 through the tip part 323 of the nozzle 320. Accordingly, when the liquid raw material in the liquid reservoir chamber 310 is introduced from the liquid inlet 312 on the liquid reservoir chamber 310 side of the pores 316, the liquid raw material is discharged from the discharge port 322 through the nozzle 320.
- the liquid inlet 312 of the pore 316 is opened and closed by a flexible valve body 334 made of, for example, a diaphragm valve.
- the liquid reservoir chamber 310 is partitioned by the valve body 334 and the inner wall of the liquid raw material introduction part 311.
- the valve body 334 is attached to an actuator 330 that adjusts the valve opening and closing and the valve opening degree.
- the actuator 330 is provided on the ceiling of the liquid storage chamber 310. Specifically, the actuator 330 is attached via a cylindrical attachment member 332 provided so as to surround a through hole 301 formed in the ceiling of the liquid reservoir chamber 310. A drive rod 333 that is driven up and down by the operation of the actuator 330 is provided through the through-hole 301 at the approximate center of the actuator 330.
- the actuator 330 is configured to move the drive rod 333 up and down with, for example, a cylindrical electromagnetic coil, and the valve body 334 is attached to the lower end of the drive rod 333. Thereby, the liquid inlet 312 of the pore 316 can be opened and closed by bending the valve body 334 in conjunction with the operation of the drive rod 333.
- the actuator 330 is connected to the control unit 150 and the drive rod 333 is driven based on a control signal from the control unit 150. Thereby, based on the control signal from the control part 150, the drive rod 333 of the actuator 330 can be moved up and down to drive the valve body 334 to open and close the valve body 334.
- valve opening degree of the valve body 334 can be adjusted by adjusting the position of the drive rod 333 of the actuator 330 based on the control signal from the control unit 150.
- the valve opening degree of the valve body 334 in this way, the liquid material introduced from the liquid inlet 312 of the pore 316 can be adjusted, so the flow rate of the liquid raw material discharged from the discharge port 322 is adjusted. it can.
- the drive rod 333 may be driven until the valve body 334 is seated on the liquid inlet 312 and fully closed.
- the actuator 330 is not limited to the electromagnetic drive system as described above, and may be a drive system using a piezoelectric element, for example.
- the discharge port 322 is partially heated between the tip 323 of the nozzle 320 and the vaporization chamber 360 in order to prevent deposits from adhering to the discharge port 322 of the nozzle.
- a heated member 340 is provided for this purpose. The upper end of the member to be heated 340 is attached to the attachment member 321 of the nozzle 320, and the lower end thereof is attached to the source gas generation unit 300B.
- FIG. 3 is an enlarged view for explaining the configuration in the vicinity of the heated member.
- the member to be heated 340 is made of a substantially cylindrical metal made of Al, stainless steel, or the like, and its upper portion covers the tip 323 of the nozzle 320, particularly around the discharge port 322. It is configured as follows.
- the heated member 340 is provided with a carrier gas ejection port 326 that ejects carrier gas from the vicinity of the discharge port 322.
- the carrier gas outlet 326 communicates with a carrier gas supply channel 324 formed in the heated member 340.
- the carrier gas supply channel 324 is connected to the carrier gas supply pipe 122. As a result, the carrier gas from the carrier gas supply pipe 122 is ejected from the carrier gas outlet 326 through the carrier gas supply channel 324.
- the inner side of the lower end of the heated member 340 is connected to the inlet 361 of the vaporizing chamber 360.
- a mixing chamber 344 is formed below the discharge port 322, and the liquid source discharged from the discharge port 322 is mixed with the carrier gas discharged from the carrier gas discharge port 326 and discharged to the vaporization chamber 360. Has been.
- the mixing chamber 344 is partitioned by a throttle portion 350 provided in the heated member 340 and an inner wall of the heated member 340.
- a throttle hole 352 that connects the mixing chamber 344 and the vaporizing chamber 360 is formed in the throttle portion 350.
- Such a diaphragm 350 is configured as shown in FIG. 3, for example.
- An upper tapered portion 354 that gradually increases the diameter of the throttle hole 352 toward the mixing chamber 344 side is provided on the mixing chamber 344 side of the throttle portion 350 shown in FIG. 3 so as to protrude toward the discharge port 322. It has been.
- a lower tapered portion 356 that gradually increases the diameter of the throttle hole 352 toward the vaporization chamber 360 side is provided on the vaporization chamber 360 side of the throttle portion 350 so as to protrude toward the vaporization chamber 360.
- the liquid material droplets discharged from the discharge port 322 are mixed with the carrier gas in the mixing chamber 344, the flow velocity thereof is increased by the throttle hole 352, and the liquid material droplets are ejected toward the vaporizing chamber 360.
- the liquid material droplets can be made finer and the droplets can be stably supplied to the vaporizing chamber 360 together with the carrier gas.
- the mixing chamber 344 is preferably composed of a central space 346 below the discharge port 322 and an annular space 348 surrounding the periphery.
- the inner wall of the heated member 340 that defines the mixing chamber 344 is annularly formed by obliquely forming an upper portion in the vicinity of the side wall (for example, a portion where the carrier gas jet 326 is formed).
- a wall surface of the space 348 can be formed.
- the wall surface of the annular space 348 can be formed outside the upper tapered portion 354 in the mixing chamber 344.
- the mixing chamber 344 is constituted by the central space 346 below the discharge port 322 and the annular space 348 surrounding the periphery thereof, and the carrier gas outlet 326 is arranged so that carrier gas is ejected into the annular space 348.
- the carrier gas ejected from the carrier gas ejection port 326 spreads in the annular space 348 and flows from the entire annular space 348 to the central space 346.
- the liquid material droplets discharged from the discharge port 322 can be efficiently guided to the throttle hole 352.
- the throttle portion 350 as shown in FIG. 3
- the throttle hole 352 is expanded toward the inlet side (upstream side), so that the carrier gas can be easily guided from the annular space 348 to the central space 346. Can do.
- the throttle hole 352 is expanded toward the outlet side (downstream side) by configuring the throttle part 350 as shown in FIG. 3, the liquid material droplets and the carrier gas ejected from the throttle hole 352 The flow rate of can be further increased.
- the configuration of the diaphragm 350 is not limited to that shown in FIG.
- the throttle part 350 may be formed in a disc shape, and a throttle hole 352 may be provided in the center thereof.
- the flow velocity at the time of ejection from the throttle hole 352 varies depending on the distance d between the discharge port 322 and the throttle part 350. For this reason, it is preferable to determine the position of the throttle portion 350 so that the distance d is optimized according to the desired flow velocity. This point is the same in the configuration shown in FIG.
- a coiled heater 342 is wound around the heated member 340.
- the heater 342 is provided in a narrow range from the discharge port 322 of the nozzle 320 to the lower end portion of the heated member 340. Thereby, the vicinity of the discharge port 322 of the heated member 340 can be partially heated.
- the heater 342 is composed of, for example, a resistance heater. The heating temperature of the heater 342 is controlled by controlling the heater power supply 343 by the control unit 150.
- the liquid material discharge port 322 can be partially heated at a temperature (eg, 100 ° C. or higher) to the extent that deposits do not adhere. it can. Thereby, it is possible to prevent deposits from adhering to the discharge port 322. Furthermore, by heating the member to be heated 340, not only the liquid material discharge port 322 but also the mixing chamber 344 mixed with the carrier gas can be heated. As a result, the moisture that causes the deposits to be generated, that is, the moisture contained in the carrier gas can be efficiently evaporated in the mixing chamber 344, so that it is more effective that the deposits adhere to the discharge port 322. Can be prevented.
- a temperature eg, 100 ° C. or higher
- the nozzle 320 by configuring the nozzle 320 with resin as in the present embodiment, it is possible to effectively prevent the heated member 340 from being heated up to the pores 316 in the nozzle 320 even if the heated member 340 is heated. Thereby, even if the heating temperature of the member to be heated 340 is increased, it is possible to prevent deposits from adhering to the discharge port 322 without thermally decomposing the liquid raw material passing through the pores 316.
- the source gas generation unit 300 ⁇ / b> B includes a substantially cylindrical casing 370 that partitions the vaporization chamber 360 and a source gas delivery unit 380 provided below the casing 370.
- the casing 370 and the source gas delivery unit 380 are made of a metal such as Al or stainless steel.
- the casing 370 and the source gas delivery unit 380 are covered with heaters 392 and 394 as first heating units.
- the heaters 392 and 394 are constituted by resistance heaters, for example.
- the heat generation temperature of the heaters 392 and 394 is controlled by controlling the heater power supply 395 by the control unit 150.
- the source gas generation unit 300B can be heated to a predetermined temperature higher than the vaporization temperature of the liquid source, for example.
- the casing 370 here is configured by connecting an upper casing 372, an intermediate casing 374, and a lower casing 376 by a fastening member such as a bolt (not shown).
- the vaporization chamber 360 includes a diameter expansion space 362 formed in the upper housing 372, a guide space 364 formed in the intermediate housing 374, and a lead-out space 366 formed in the lower housing 376.
- the diameter-expanding space 362 is gradually enlarged from the introduction port 361 downward, and its lower end is connected to the guide space 364.
- the guide space 364 here is composed of a plurality of guide holes 365 formed vertically from the upper side to the lower side in order to efficiently heat the liquid material droplets.
- the plurality of guide holes 365 guide the liquid material droplets from the enlarged space 362 to the outlet space 366.
- the guide space 364 is not limited to the above.
- the intermediate housing 374 may be formed in a simple cylindrical shape.
- the guide space 364 that is a space in the intermediate housing 374 may be formed in the same cylindrical shape as the diameter of the lower end of the diameter-expanded space 362 (the diameter of the lead-out space 366).
- Liquid source liquid droplets supplied together with the carrier gas from the liquid source supply unit 300A through the introduction port 361 pass through the vaporization chamber 360 of the casing 370 heated by the heaters 392 and 394, and the expanded diameter space 362 and guide holes. 365 and vaporized to pass through the lead-out space 366 in order.
- the source gas delivery unit 380 includes a source gas delivery pipe 382 connected to a delivery port 378 formed on the side wall of the lower housing 376 and a mist trap part provided so as to close the source gas delivery pipe 382. 390.
- the source gas delivery pipe 382 is vertically attached to the side wall of the lower housing 376 and extends in the horizontal direction.
- a flanged joint 386 connected to the source gas supply pipe 132 is attached to the downstream end 384 of the source gas delivery pipe 382.
- the mist trap portion 390 here is detachably fixed by a flanged joint 386 so as to close the opening of the end portion 384 of the source gas delivery pipe 382.
- the mist trap section 390 is configured by a breathable member having air permeability that allows the liquid material to be captured without passing through the liquid material in the form of droplets and the raw material gas obtained by vaporizing the liquid material to pass through.
- a gas permeable member it is preferable to employ a material having a finer diameter than the diameter of the liquid raw material droplet.
- a material having a high thermal conductivity and a characteristic that the temperature is likely to rise is preferable. Examples of such a condition that can be satisfied include metals such as stainless steel having a porous structure or a mesh structure. In addition, ceramics or plastics having high thermal conductivity may be used.
- the mist trap unit 390 is also heated by the heater 394 by covering the entire raw material gas delivery unit 380 with the heater 394.
- mist trap unit 390 at the source gas delivery port 378, for example, liquid source droplets that remain without being vaporized in the vaporization chamber 360 are also transferred to the mist trap unit 390 heated by the heater 394. It is trapped and vaporized and can pass through the mist trap 390.
- the casing 370 is provided with a first temperature sensor (for example, a thermocouple) 152, and the heating temperature by the heaters 392 and 394, particularly the temperature in the vaporizing chamber 360 is monitored by the control unit 150, whereby the inside of the vaporizing chamber 360 is monitored. Can always be kept at a predetermined set temperature.
- a second temperature sensor for example, a thermocouple
- 154 is provided in the vicinity of the discharge port 322 of the nozzle 320 of the heated member 340, and the heating temperature by the heater 342, particularly the temperature of the discharge port 322 is monitored by the control unit 150.
- the temperature in the vicinity of the discharge port 322 can always be maintained at a predetermined set temperature.
- the temperature of the discharge port 322 is preferably set to, for example, 100 ° C. to 140 ° C. or higher so that no deposits adhere to the discharge port 322, and the temperature in the vaporization chamber 360 is higher than that, for example, 120 ° C. It is preferable to set the temperature to ⁇ 160 ° C. or higher.
- the temperature of the discharge port 322 is set to 120 ° C., for example, and the temperature in the vaporization chamber 360 is set to 140 ° C., for example.
- the vaporization efficiency in the vaporization chamber 360 can be increased while maintaining the temperature of the discharge port 322 at least at a temperature at which the deposits do not adhere to the discharge port 322. Further, by controlling the temperature of the vaporizing chamber 360 so as to be higher than the temperature of the discharge port 322, a temperature gradient can be formed such that the temperature increases from the upstream side to the downstream side as viewed in the vaporizer 300 as a whole. it can. That is, the temperature of the portion through which the liquid material flows is lowest, and the discharge port 322 is heated to a temperature at which deposits do not adhere, and the vaporization chamber 360 is heated to a higher temperature. This prevents the liquid material from being thermally decomposed while flowing through the pores 316 to the discharge port 322, thereby preventing deposits from adhering to the discharge port 322, and further improving the vaporization efficiency in the vaporization chamber 360. Can be improved.
- the second temperature sensor 154 is provided as close to the discharge port 322 as possible so that the heating can be controlled more accurately so that the discharge port 322 reaches a desired temperature. This can also prevent excessive heating to the pores 316 through which the liquid material flows.
- control unit 150 adjusts the opening degree of the liquid source flow rate control valve 114 to supply a liquid source at a predetermined flow rate from the liquid source supply source 110 to the vaporizer 300 via the liquid source supply pipe 112.
- the opening degree of the carrier gas flow rate control valve 124 is adjusted, and a predetermined amount of carrier gas is supplied from the carrier gas supply source 120 to the vaporizer 300 via the carrier gas supply pipe 122.
- the liquid raw material from the liquid raw material supply pipe 112 is temporarily stored in the liquid storage chamber 310.
- the valve body 334 is driven by the actuator 330 to open the liquid inlet 312 of the pore 316, whereby the liquid material passes through the pore 316 and is discharged as droplets from the discharge port 322 of the nozzle 320.
- the carrier gas from the carrier gas supply pipe 122 is injected from the carrier gas outlet 326 through the carrier gas supply channel 324.
- the liquid material droplets ejected from the ejection port 322 are mixed in the mixing chamber 344 by the carrier gas ejected from the carrier gas ejection port 326 and accelerated through the throttle hole 352 to become finer droplets. Are ejected toward the vaporizing chamber 360.
- the member to be heated 340 is heated to a predetermined temperature, the adhering matter does not adhere even if the discharge port 322 is exposed to the carrier gas.
- the liquid material droplets introduced together with the carrier gas from the inlet 361 are diffused by the diameter-enlarging space 362, pass through the guide holes 365 of the guide space 364, and are guided to the outlet space 366.
- each space of the vaporizing chamber 360 is heated to a predetermined temperature separately from the member to be heated 340, most of liquid droplets of the liquid material are vaporized in each space of the heated vaporizing chamber 360 to form the raw material.
- the gas is led to the delivery port 378, passes through the mist trap 390 via the source gas delivery pipe 382, and is sent to the source gas supply pipe 132.
- mist trap unit 390 is also heated to a predetermined temperature, droplets that could not be vaporized in the vaporization chamber 360 are sprayed to the mist trap unit 390 and are instantly vaporized to become a raw material gas. It passes through the section 390 and is sent to the source gas supply pipe 132.
- the source gas sent to the source gas supply pipe 132 is supplied to the film forming chamber 200, introduced into the diffusion chamber 242 of the shower head 240, and discharged toward the wafer W on the susceptor 222 from the gas discharge hole 244. Then, a predetermined film such as an HfO 2 film is formed on the wafer W.
- the flow rate of the source gas introduced into the film forming chamber 200 can be adjusted by controlling the opening degree of the source gas flow rate control valve 134 provided in the source gas supply pipe 132.
- the liquid material discharge port 322 can be heated partially and separately from the vaporization chamber 360, the liquid material passing through the pores 316 is not thermally decomposed in the middle of the discharge port. It is possible to prevent 322 from being clogged with deposits, and to further increase the vaporization efficiency in the vaporization chamber 360.
- the vaporizer according to the present invention can be applied to a vaporizer used for MOCVD apparatus, plasma CVD apparatus, ALD (atomic layer deposition) apparatus, LP-CVD (batch type, vertical type, horizontal type, mini-batch type), etc. It is.
- the present invention is applicable to a vaporizer that vaporizes a liquid raw material to generate a raw material gas and a film forming apparatus using the vaporizer.
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Abstract
Description
まず,本発明の実施形態にかかる成膜装置について図面を参照しながら説明する。図1は本実施形態にかかる成膜装置の概略構成例を説明するための図である。図1に示す成膜装置100は,被処理基板例えば半導体ウエハ(以下,単に「ウエハ」という)W上にCVD法により金属酸化物膜を成膜するものであり,Hf(ハフニウム)を含有する有機化合物からなる液体原料を供給する液体原料供給源110と,キャリアガスを供給するキャリアガス供給源120と,液体原料供給源110から供給される液体原料を気化させて原料ガスを生成する気化器300と,気化器300が生成した原料ガスを用いてウエハWに例えばHfO2膜を形成する成膜室200と,成膜装置100の各部を制御する制御部150を備えている。なお,キャリアガスとして,例えばArなどの不活性ガスを用いることができる。
以下,本実施形態にかかる気化器300の具体的構成例について図面を参照しながら説明する。図2は,本実施形態にかかる気化器の概略構成例を示す縦断面図である。図2に示すように,気化器300は大別すると,液体原料を液滴状(ミスト状)にして吐出する液体原料供給部300Aと,吐出された液敵状の液体原料を気化して原料ガスを生成する気化室360を形成する原料ガス生成部300Bとから構成される。
以上のように構成された本実施形態にかかる成膜装置100の動作について図面を参照しながら説明する。気化器300によって原料ガスを生成するにあたり,予め気化器300のヒータ392,394により気化室360及びミストトラップ部390を加熱するとともに,ヒータ342により被加熱部材340を加熱しておく。
110 液体原料供給源
112 液体原料供給配管
114 液体原料流量制御バルブ
120 キャリアガス供給源
122 キャリアガス供給配管
124 キャリアガス流量制御バルブ
132 原料ガス供給配管
134 原料ガス流量制御バルブ
150 制御部
152 第1温度センサ
154 第2温度センサ
200 成膜室
210 天壁
212 底壁
222 サセプタ
224 支持部材
226 ヒータ
228 電源
230 排気ポート
232 排気系
240 シャワーヘッド
242 拡散室
244 ガス吐出孔
300 気化器
300A 液体原料供給部
300B 原料ガス生成部
301 貫通孔
310 液溜室
311 液体原料導入部
312 液入口
316 細孔
318,319 Oリング
320 ノズル
321 取付部材
322 吐出口
323 先端部
324 キャリアガス供給流路
326 キャリアガス噴出口
330 アクチュエータ
332 取付部材
333 駆動ロッド
334 弁体
340 被加熱部材
342 ヒータ
343 ヒータ電源
344 混合室
346 中央空間
348 環状空間
350 絞り部
352 絞り孔
354 上部テーパ部
356 下部テーパ部
360 気化室
361 導入口
362 拡径空間
364 案内空間
365 案内孔
366 導出空間
370 筐体
372 上部筐体
374 中間部筐体
376 下部筐体
378 送出口
380 原料ガス送出部
382 原料ガス送出配管
384 端部
386 フランジ付継手
390 ミストトラップ部
392,394 ヒータ
395 ヒータ電源
W ウエハ
Claims (8)
- 液体原料が所定の圧力で供給される液溜室と,
前記液溜室から突き出すように配設され,前記液溜室内の液体原料を吐出するノズルと,
前記ノズルの吐出口から吐出された前記液体原料を気化して原料ガスを生成して送出口から送出する気化室と,
前記ノズルの先端部と前記気化室との間に前記吐出口の周囲を覆うように設けられた筒状の被加熱部材と,
前記被加熱部材に設けられ,前記吐出口の近傍からキャリアガスを噴出するキャリアガス噴出口と,
前記被加熱部材内に区画され,前記吐出口から吐出された前記液体原料を前記キャリアガスと混合させて前記気化室へ噴出させる混合室と,
前記気化室をその外側から加熱する第1加熱部と,
前記被加熱部材をその外側から加熱する第2加熱部と,
を備えることを特徴とする気化器。 - 前記被加熱部材は金属で構成するとともに,前記ノズルは樹脂で構成したことを特徴とする請求項1に記載の気化器。
- 前記混合室は,前記被加熱部材内に設けられた絞り部によって区画され,前記絞り部には,前記混合室と前記気化室との間を連通する絞り孔が形成され,
前記絞り部は,前記第2加熱部によって前記被加熱部材とともに加熱されることを特徴とする請求項2に記載の気化器。 - 前記混合室は,前記吐出口の下方の中央空間とその周囲を囲む環状空間とにより構成し,前記キャリアガス噴出口は前記環状空間にキャリアガスが噴出されるように配置したことを特徴とする請求項3に記載の気化器。
- 前記絞り部の前記混合室側には,その混合室側に向けて前記絞り孔の径を徐々に大きくする上部テーパ部を設け,
前記上部テーパ部は,前記吐出口に向けて突出するように形成したことを特徴とする請求項4に記載の気化器。 - 前記絞り部の前記気化室側には,その気化室側に向けて前記絞り孔の径を徐々に大きくする下部テーパ部を設け,
前記下部テーパ部は,前記気化室に向けて突出するように形成したことを特徴とする請求項5に記載の気化器。 - 前記気化室の温度を検出する第1温度センサと,
前記吐出口の温度を検出する第2温度センサと,
前記各温度センサからの温度を監視して,前記吐出口の温度を少なくとも前記吐出口に付着物が付着しない温度に制御するとともに,前記気化室の温度が前記吐出口の温度よりも高くなるように制御する制御部と,
を設けたことを特徴とする請求項1~6のいずれかに記載の気化器。 - 液体原料を気化して原料ガスを生成する気化器から前記原料ガスを導入して被処理基板に対して成膜処理を行う成膜室を有する成膜装置であって,
前記気化器は,
液体原料が所定の圧力で供給される液溜室と,
前記液溜室から突き出すように配設され,前記液溜室内の液体原料を吐出するノズルと,
前記ノズルの先端部に開口する吐出口と,
前記吐出口から吐出された前記液体原料を気化して原料ガスを生成する気化室と,
前記気化室からの原料ガスを前記成膜室に送出する送出口と,
前記ノズルの先端部と前記気化室との間に前記吐出口の周囲を覆うように設けられた筒状の被加熱部材と,
前記被加熱部材に設けられ,前記吐出口の近傍からキャリアガスを噴出するキャリアガス噴出口と,
前記被加熱部材内に区画され,前記吐出口から吐出された前記液体原料を前記キャリアガスと混合させて前記気化室へ噴出させる混合室と,
前記気化室をその外側から加熱する第1加熱部と,
前記被加熱部材をその外側から加熱する第2加熱部と,
を備えることを特徴とする成膜装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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KR1020107022047A KR101240031B1 (ko) | 2008-09-30 | 2009-06-12 | 기화기 및 이를 이용한 성막 장치 |
US13/121,238 US20110180002A1 (en) | 2008-09-30 | 2009-06-12 | Vaporizer and deposition system using the same |
CN2009801167343A CN102016116B (zh) | 2008-09-30 | 2009-06-12 | 气化器及使用该气化器的成膜装置 |
Applications Claiming Priority (2)
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JP (1) | JP2010087169A (ja) |
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Cited By (2)
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WO2017081924A1 (ja) * | 2015-11-10 | 2017-05-18 | 東京エレクトロン株式会社 | 気化器、成膜装置及び温度制御方法 |
US10391417B2 (en) * | 2015-12-11 | 2019-08-27 | Horiba Stec, Co., Ltd. | Liquid material vaporizaton apparatus |
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KR101003545B1 (ko) | 2010-07-07 | 2010-12-30 | 주식회사 태한이엔씨 | 기화 장치 |
JP5647854B2 (ja) * | 2010-10-15 | 2015-01-07 | 株式会社アルバック | 成膜装置及び成膜方法 |
TWI579405B (zh) * | 2012-11-15 | 2017-04-21 | 財團法人工業技術研究院 | 電漿鍍膜裝置 |
JP6151943B2 (ja) * | 2013-03-26 | 2017-06-21 | 株式会社日立国際電気 | 基板処理装置及び半導体装置の製造方法 |
KR102170813B1 (ko) * | 2013-07-09 | 2020-10-28 | 한국전력공사 | 연소화학기상증착 반응을 이용한 기능성 코팅 장치 |
KR101777777B1 (ko) * | 2015-12-23 | 2017-09-26 | 주식회사 포스코 | 고속 코팅용 진공 증착 장치 |
CN108780752A (zh) * | 2016-03-24 | 2018-11-09 | 株式会社国际电气 | 气化器、衬底处理装置及半导体器件的制造方法 |
KR20180027780A (ko) * | 2016-09-07 | 2018-03-15 | 주성엔지니어링(주) | 기화기 |
US20180066363A1 (en) * | 2016-09-08 | 2018-03-08 | Tokyo Electron Limited | Vortical atomizing nozzle assembly, vaporizer, and related methods for substrate processing systems |
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WO2019180906A1 (ja) * | 2018-03-23 | 2019-09-26 | 株式会社Kokusai Electric | 気化器、基板処理装置及び半導体装置の製造方法 |
JP7094172B2 (ja) * | 2018-07-20 | 2022-07-01 | 東京エレクトロン株式会社 | 成膜装置、原料供給装置及び成膜方法 |
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CN112495691B (zh) * | 2020-10-27 | 2022-04-12 | 南京科赫科技有限公司 | 一种烟气净化用滤袋深度镀膜装置 |
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- 2009-06-12 US US13/121,238 patent/US20110180002A1/en not_active Abandoned
- 2009-06-12 CN CN2009801167343A patent/CN102016116B/zh not_active Expired - Fee Related
- 2009-06-12 KR KR1020107022047A patent/KR101240031B1/ko not_active IP Right Cessation
- 2009-06-12 WO PCT/JP2009/060762 patent/WO2010038515A1/ja active Application Filing
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WO2017081924A1 (ja) * | 2015-11-10 | 2017-05-18 | 東京エレクトロン株式会社 | 気化器、成膜装置及び温度制御方法 |
JPWO2017081924A1 (ja) * | 2015-11-10 | 2018-08-16 | 東京エレクトロン株式会社 | 気化器、成膜装置及び温度制御方法 |
US10391417B2 (en) * | 2015-12-11 | 2019-08-27 | Horiba Stec, Co., Ltd. | Liquid material vaporizaton apparatus |
Also Published As
Publication number | Publication date |
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KR101240031B1 (ko) | 2013-03-06 |
CN102016116B (zh) | 2012-11-21 |
JP2010087169A (ja) | 2010-04-15 |
CN102016116A (zh) | 2011-04-13 |
US20110180002A1 (en) | 2011-07-28 |
KR20110025166A (ko) | 2011-03-09 |
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