WO2018003002A1 - 活性ガス生成装置及び成膜処理装置 - Google Patents
活性ガス生成装置及び成膜処理装置 Download PDFInfo
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- WO2018003002A1 WO2018003002A1 PCT/JP2016/069091 JP2016069091W WO2018003002A1 WO 2018003002 A1 WO2018003002 A1 WO 2018003002A1 JP 2016069091 W JP2016069091 W JP 2016069091W WO 2018003002 A1 WO2018003002 A1 WO 2018003002A1
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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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
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- C01B13/10—Preparation of ozone
- C01B13/11—Preparation of ozone by electric discharge
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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
- C23C16/505—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 using radio frequency discharges
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- H—ELECTRICITY
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- 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
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
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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
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- H01J37/32449—Gas control, e.g. control of the gas flow
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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
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- H—ELECTRICITY
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- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
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- H01J2237/32—Processing objects by plasma generation
- H01J2237/33—Processing objects by plasma generation characterised by the type of processing
- H01J2237/332—Coating
- H01J2237/3322—Problems associated with coating
- H01J2237/3323—Problems associated with coating uniformity
Definitions
- the present invention relates to an active gas generating apparatus in which a high voltage dielectric electrode and a grounded dielectric electrode are installed in parallel, a high voltage is applied between both electrodes, and an active gas is obtained with energy generated by discharge.
- a metal electrode such as an Au film is formed on a dielectric electrode such as ceramic to form an electrode component.
- the dielectric electrode is the main in the electrode component, and the metal electrode formed there is a subordinate.
- each uses a disk-shaped electrode configuration part in which a disk-shaped high-voltage dielectric electrode and a grounded dielectric electrode are installed in parallel.
- the material gas that has entered the structure passes through the discharge space (discharge field) and is ejected outward from a gas ejection hole provided only in the center of the electrode.
- the electrode shape can be devised. Countermeasures are required.
- the source gas When using dielectric barrier discharge (silent discharge or creeping discharge) to generate energy by supplying energy to the source gas, it is desirable that the source gas has a constant residence time in the discharge space. The reason for this is that if the source gas becomes uneven in the residence time in the discharge space, the amount and concentration of the active gas will differ, so that when the active gas is supplied to the processing target substrate such as a wafer to be deposited, This is because the film result may not be constant.
- a disk-like electrode structure or a cylindrical electrode structure is used when there is one gas ejection hole, and the residence time of the source gas in the discharge space is made constant.
- FIG. 9 is an explanatory view schematically showing a basic configuration of a conventional active gas generation apparatus adopting a disk-shaped electrode structure.
- FIG. 2 (a) is a diagram showing an outline when the ridge is viewed obliquely downward from above
- FIG. 2 (b) is a sectional view showing a sectional structure.
- FIG. 10 is an explanatory view showing the gas ejection hole 9 shown in FIG. 9 and its surroundings in an enlarged manner. 9 and 10 show an XYZ orthogonal coordinate system as appropriate.
- the basic configuration is a high-voltage side electrode configuration portion 1X and a ground-side electrode configuration portion 2X provided below the high-voltage side electrode configuration portion 1X.
- the high-voltage side electrode constituting unit 1X is configured by a dielectric electrode 11X and a metal electrode 10X having a donut shape in plan view having a space in the center provided on the upper surface of the dielectric electrode 11X.
- the ground-side electrode constituting section 2X includes a dielectric electrode 21X and a planar doughnut-shaped metal electrode 20X that is provided on the lower surface of the dielectric electrode 21X and has a space in the center.
- one gas ejection hole 9 is provided at the center of the center portion of the dielectric electrode 21X (a region where the metal electrodes 20X and 10X do not overlap in plan view). Note that an AC voltage is applied to the high-voltage side electrode configuration unit 1X and the ground-side electrode configuration unit 2X by a high-frequency power source (not shown).
- the region where the metal electrodes 10X and 20X overlap in plan view is defined as the discharge space DSX (discharge field).
- a discharge space DSX is formed between the high-voltage side electrode component 1X and the ground-side electrode component 2X, and the source gas is supplied along the gas flow 8 in the discharge space DSX.
- an active gas such as radicalized nitrogen atoms can be obtained and ejected downward ( ⁇ Z direction) from the gas ejection hole 9 provided at the center of the dielectric electrode 21X.
- the gas flow 8 in the discharge space can be made constant regardless of the supply direction.
- FIG. 11 is an explanatory view schematically showing a basic configuration of a conventional active gas generator employing a cylindrical electrode structure.
- FIG. 4A is a diagram showing a side structure
- FIG. 4B is a diagram showing a surface structure. Note that FIG. 11 shows an XYZ orthogonal coordinate system as appropriate.
- the basic configuration is a high-voltage side electrode configuration unit 1Y and a ground-side electrode configuration unit 2Y provided inside the high-voltage side electrode configuration unit 1Y.
- the ground-side electrode constituting portion 2Y is provided at the center of a circle on the XZ plane of the high-voltage side electrode constituting portion 1Y.
- the dielectric electrode 21Y is formed to cover the dielectric electrode 21Y.
- the high-voltage side electrode constituting portion 1Y is composed of a hollow cylindrical dielectric electrode 11Y having a space inside and a circular sectional structure, and a metal electrode 10Y formed so as to cover the outer periphery of the dielectric electrode 11Y.
- the discharge space DSY is provided in a hollow area provided between the dielectric electrode 11Y and the dielectric electrode 21Y.
- an AC voltage is applied to the high-voltage side electrode component 1Y and the ground-side electrode component 2Y by a high frequency power source (not shown).
- the space between the inner peripheral region of the metal electrode 10Y and the outer peripheral region of the metal electrode 20Y is a discharge space DSY in the dielectric space where the dielectric electrodes 11Y and 21Y face each other by application of an AC voltage from the high frequency power source. Is defined as
- the discharge space DSY is formed between the high-voltage side electrode constituent portion 1Y and the ground-side electrode constituent portion 2Y by application of an alternating voltage, and the height direction of the cylinder in the discharge space DSY from one end portion
- active gas 7 such as radicalized nitrogen atoms can be obtained, and active gas 7 can be ejected to the outside from the other end.
- the gas flow 8 in the discharge space can be made constant regardless of the supply direction.
- an active gas generating apparatus that employs the disk-shaped electrode structure shown in FIGS. 9 and 10
- a plasma processing apparatus disclosed in Patent Document 1
- an atmospheric pressure plasma processing apparatus that generates an active gas using atmospheric pressure plasma and performs film formation is disclosed in Patent Document 2, for example.
- JP 2011-154773 A Japanese Patent Laid-Open No. 2015-5780
- the substrate to be processed is placed directly under the active gas generator so that the active gas obtained by activating the source gas can be quickly supplied to the film formation target, and the film is formed by injecting the active gas over a relatively wide area.
- the active gas obtained by activating the source gas can be quickly supplied to the film formation target, and the film is formed by injecting the active gas over a relatively wide area.
- the active gas transport distance can be shortened and the active gas attenuates, it can be expected that a higher concentration of the active gas is supplied to the substrate to be processed.
- the conventional active gas generator employing a cylindrical electrode structure has a basic structure with one gas ejection hole (a space communicating with the discharge space DSY) (FIG. 11). It is practically impossible to provide a plurality of gas ejection holes.
- FIG. 12 is an explanatory view schematically showing a basic configuration of an active gas generation apparatus adopting a disk-like electrode structure having two gas ejection holes, specifically showing an outline viewed obliquely downward from above. It is.
- FIG. 13 is an explanatory view showing the gas ejection holes shown in FIG. 12 and the periphery thereof in an enlarged manner. 12 and 13 show an XYZ orthogonal coordinate system as appropriate.
- the basic configuration includes a high-voltage side electrode configuration unit 102 and a ground-side electrode configuration unit 202 provided below the high-voltage side electrode configuration unit 102.
- the high-voltage side electrode constituting unit 102 is configured by a dielectric electrode 13 and a metal electrode 12 having a donut shape in plan view having a space in the center provided on the upper surface of the dielectric electrode 13.
- the ground-side electrode constituting section 202 is configured by the dielectric electrode 23 and the metal electrode 22 having a donut shape in plan view having a space in the center provided on the lower surface of the dielectric electrode 23.
- two gas ejection holes 91 and 92 are provided along the X direction in the central portion of the dielectric electrode 23 (a region where the metal electrodes 22 and 12 do not overlap in plan view).
- a region where the metal electrodes 12 and 22 overlap in plan view is defined as a discharge space.
- a discharge space is formed between the high-voltage side electrode component 102 and the ground-side electrode component 202 by application of an alternating voltage, and the source gas 6 is supplied along the gas flow 8 in this discharge space. Then, an active gas such as radicalized nitrogen atoms can be obtained and ejected from the gas ejection hole 91 or the gas ejection hole 92 provided in the central portion of the dielectric electrode 23 to the outside below.
- an active gas such as radicalized nitrogen atoms
- the conventional active gas generator employing the disc-shaped electrode structure has the gas flow 8 in the discharge space in the supply direction even when it has two gas ejection holes 91 and 92. It can be made constant regardless.
- Patent Document 1 also provides a plurality of gas ejection holes because three or more gas ejection holes are provided in the disc-shaped electrode structure when generating radicals by dielectric barrier discharge. In the meantime, there is a high possibility that there is a difference between the flow rate of the flowing gas, the amount of radicals generated, and the concentration, and the active gas cannot be supplied uniformly.
- Patent Document 2 since the technology disclosed in Patent Document 2 generates plasma near the substrate to be processed, a substance reacts in the vicinity of the substrate to be processed to form a high-quality film. Since the environment is directly affected, there is a problem that the substrate to be processed is likely to be damaged by plasma.
- an object of the present invention is to solve the above-described problems and to provide an active gas generator capable of ejecting highly uniform active gas without damaging the substrate to be processed.
- the active gas generation device is an active gas generation device that generates an active gas obtained by activating a source gas supplied to a discharge space, and includes a first electrode component and the first electrode component.
- a second electrode component provided below the first electrode component, wherein an AC voltage is applied to the first and second electrode components, and the application of the AC voltage causes the first and second electrode components to be connected to each other.
- the discharge space is formed, and the first electrode component includes a first dielectric electrode and a first metal electrode selectively formed on an upper surface of the first dielectric electrode.
- the second electrode component includes a second dielectric electrode and a second metal electrode selectively formed on the lower surface of the second dielectric electrode, and the application of the AC voltage In the dielectric space where the first and second dielectric electrodes oppose each other, the first and second dielectric electrodes are arranged.
- a region where the second metal electrode overlaps in plan view is defined as the discharge space, and the second metal electrode is formed to face each other across the central region of the second dielectric electrode in plan view.
- a pair of second partial metal electrodes, wherein the pair of second partial metal electrodes has a first direction as an electrode formation direction, and a second direction intersecting the first direction faces each other.
- the first metal electrode has a pair of first partial metal electrodes having a region overlapping with the pair of second partial metal electrodes in plan view, and the second dielectric electrode is A plurality of gas ejection holes formed in the central region for ejecting the active gas to the outside, and projecting upward at both ends in the first direction across the plurality of gas ejection holes.
- the pair of end region step portions are formed to extend in the second direction to a position exceeding at least a position where the pair of second partial metal electrodes are formed in plan view, and the plurality of gas ejection holes are The first number of first ejection holes of three or more formed at every first interval along the first direction, and the first number of first ejection holes with respect to the first number of first ejection holes.
- Two or more second number of second ejection holes that are arranged at predetermined intervals in the direction of 2 and formed at every second interval along the first direction.
- the first number of the first ejection holes and the second number of the second ejection holes are arranged such that the first ejection holes and the second ejection holes are alternately arranged along the first direction. It is characterized by being formed.
- the active gas generation device has the above-described characteristics, so that the distance between the first ejection hole and the second ejection hole that are closest to each other along the first direction. Becomes a substantial active gas ejection pitch along the first direction. As a result, a highly uniform active gas can be ejected by ejecting a plurality of active gases from a plurality of ejection holes having an active gas ejection pitch shorter than the first interval and the second interval.
- the substrate to be processed is not damaged when the active gas is generated.
- the flow of the raw material gas from the both ends in the first direction of the second dielectric electrode to the discharge space is regulated by the presence of the pair of end region step portions. For this reason, the source gas supply path of the same conditions can be set between a plurality of gas ejection holes, and active gas with high uniformity can be ejected.
- FIG. 3 is an explanatory diagram schematically showing a connection relationship between a high-voltage side electrode constituent unit and a ground-side electrode constituent unit and a high-frequency power source in the first embodiment.
- FIG. 3 is a perspective view schematically showing an external configuration of an electrode group constituent part including a high voltage side electrode constituent part and a ground side electrode constituent part according to the first embodiment. It is explanatory drawing which shows typically the basic composition of the active gas production
- FIG. 5 It is explanatory drawing which expands and shows the some gas ejection hole shown in FIG. 5, and its periphery. It is explanatory drawing which shows typically the cross-section of the film-forming processing apparatus using the active gas production
- FIG. It is explanatory drawing which shows typically the connection relation of the high voltage side electrode structure part in a 1st aspect, a ground side electrode structure part, and the high frequency power supply 5.
- FIG. It is explanatory drawing which shows typically the basic composition of the conventional active gas production
- FIG. 14 is an explanatory view schematically showing a basic configuration of an active gas generation apparatus which is a prerequisite technology that employs a disk-shaped electrode structure having three or more gas ejection holes.
- FIG. 15 is an explanatory diagram showing an enlarged view of the plurality of gas ejection holes shown in FIG. 14 and 15 show the XYZ orthogonal coordinate system as appropriate.
- the basic configuration is a high-voltage side electrode configuration unit 103 and a ground-side electrode configuration unit 203 provided below the high-voltage side electrode configuration unit 103.
- the high-voltage side electrode constituting unit 103 includes a dielectric electrode 15 and a metal electrode 14 provided on the upper surface of the dielectric electrode 15 and having a circular shape or an elliptical shape with the X direction as the major axis direction at the center. Composed.
- the ground side electrode constituting section 203 is constituted by a dielectric electrode 25 and a metal electrode 24 provided on the lower surface of the dielectric electrode 25 and having a circular shape or an elliptical space with the X direction as the major axis direction at the center. Is done.
- gas ejection holes 91 to 97 are provided in a line along the X direction in the central portion of the dielectric electrode 25 (a region where the metal electrodes 24 and 14 do not overlap in plan view).
- a region where the metal electrodes 14 and 24 overlap in plan view is defined as a discharge space.
- both gas jet holes the active gas generator having the structure shown in FIG. 14
- both gas jet holes the active gas generator having the structure shown in FIG. 14
- both gas jet holes both gas jet holes
- the gas ejection holes 92 to 96 hereinafter sometimes abbreviated as “central gas ejection holes” between them increase the possibility of unevenness in the gas flow rate and the energy received by the gas.
- the gas ejection holes 91 and 97 have a gas flow 8 from the X direction in addition to the Y direction, but the gas ejection holes 92 to 96 are limited to the gas flow 8 from the Y direction.
- the disk-shaped (elliptical disk-shaped) electrode structure when the disk-shaped (elliptical disk-shaped) electrode structure is adopted, if the number of gas ejection holes is three or more, the gas flow is constant between the gas ejection holes at both ends and the central gas ejection hole. It has a problem that it is difficult to do.
- FIG. 16 is an explanatory view schematically showing a basic configuration of an active gas generation apparatus employing a rectangular electrode structure having three or more gas ejection holes.
- FIG. 17 is an explanatory diagram showing an enlarged view of the plurality of gas ejection holes shown in FIG. 16 and 17 show an XYZ orthogonal coordinate system as appropriate.
- a high-voltage side electrode component 1 (first electrode component) and a ground-side electrode component 2P (second electrode component) provided below the high-voltage electrode component 1 ) And the basic configuration.
- the high voltage side electrode constituting unit 1 includes a dielectric electrode 11 (first dielectric electrode) and metal electrode pairs 10H and 10L (a pair of first parts) provided on the upper surface of the dielectric electrode 11 separately from each other. Metal electrode).
- the ground side electrode constituting part 2P is composed of a dielectric electrode 21P and metal electrode pairs 20H and 20L (a pair of second partial metal electrodes) provided separately on the lower surface of the dielectric electrode 21P.
- the dielectric electrodes 11 and 21P each have a rectangular flat plate structure in which the X direction is the longitudinal direction and the Y direction is the short direction.
- the center side may be referred to as a main region 70, and both end sides may be referred to as end regions 72 and 73, with rectifying step shape portions 52 and 53 described later as boundaries.
- the dielectric electrode 21P for example, seven gas ejection holes 91 to 97 (three or more) along the X direction (first direction) in the central region R51 in the main region 70. A plurality of gas ejection holes) are provided. The plurality of gas ejection holes 91 to 97 are respectively provided penetrating from the upper surface to the lower surface of the dielectric electrode 21P.
- the metal electrode pairs 10H and 10L are formed on the upper surface of the dielectric electrode 11 and face each other across the central region R50 of the dielectric electrode 11 in plan view. Arranged.
- the metal electrode pairs 10H and 10L have a substantially rectangular shape in plan view, with the X direction being the longitudinal direction and the Y direction intersecting at right angles to the X direction being opposite directions.
- the metal electrode pairs 10H and 10L have the same size in plan view, and the arrangement thereof is symmetric with respect to the central region R50.
- the central region R50 and the central region R51 are provided in such a manner that they are completely the same shape and overlap completely in plan view.
- the metal electrode pairs 10H and 10L and the metal electrode pairs 20H and 20L are formed by metallization treatment on the upper surface of the dielectric electrode 11 and the lower surface of the dielectric electrode 21P.
- the dielectric electrode 11 and the metal electrode are integrally formed to constitute the high voltage side electrode component 1 (first electrode component), and the dielectric electrode 21P and the metal electrode pairs 20H and 20L are integrally formed to form the ground side electrode.
- the component 2P (second electrode component) is configured.
- As the metallization process a process using a printing and firing method, a sputtering process, a vapor deposition process, or the like can be considered.
- gas ejection holes 91 to 97 are formed in a line shape along the X direction in the central region R51 of the dielectric electrode 21P (a region where the metal electrodes 10H and 10L and the metal electrode pairs 20H and 20L do not overlap in plan view). Is provided.
- a region where the metal electrode pairs 10H and 10L and the metal electrode pairs 20H and 20L overlap in plan view is a discharge space in a dielectric space where the dielectric electrodes 11 and 21P face each other by application of an AC voltage from a high-frequency power source (not shown). (Discharge field).
- the active gas generation device of the base technology is provided with gas ejection holes 91 to 97 in a row along the X direction in the central region R51 of the dielectric electrode 21P.
- each of the gas ejection holes 91 to 97 also function as an orifice that forms a pressure difference between a discharge space (discharge field) formed upstream thereof and a processing chamber casing or the like downstream thereof. For this reason, the total hole area of the gas ejection holes 91 to 97 is determined in advance and cannot be changed.
- the minimum processing limit for the ceramic that is the constituent material of the dielectric electrode 21P is limited. Therefore, it is necessary to provide a plurality of gas ejection holes with a hole size and a hole number corresponding to the minimum processing hole diameter in consideration of the above.
- the hole pitch is inevitably increased.
- the active gas generation apparatus of the base technology uniformly injects an active gas generated by a discharge phenomenon onto a processing target substrate such as a wafer when the hole pitch becomes large. It has a problem that it becomes unsuitable for processing.
- the embodiment described below is an active gas generation device that is a solution to the active gas generation device of the base technology described above.
- FIG. 1 is an explanatory view schematically showing a basic configuration of an active gas generation apparatus according to Embodiment 1 of the present invention. In the same figure, the figure which shows the outline seen diagonally downward from the upper part is shown.
- FIG. 2 is an explanatory diagram showing an enlarged view of the plurality of gas ejection holes shown in FIG. 1 and 2 show an XYZ orthogonal coordinate system as appropriate.
- the structure and arrangement of the dielectric electrode 11, the metal electrode pairs 10H and 10L, and the metal electrode pairs 20H and 20L, the shapes and arrangements of the central regions R50 and R51, etc. are the prerequisite technologies shown in FIGS.
- the same reference numerals are used and description thereof is omitted as appropriate.
- a high-voltage side electrode component 1 (first electrode component) and a ground-side electrode component 2 (second electrode component) provided below the high-voltage electrode component 1 ) And the basic configuration.
- the high-voltage side electrode configuration unit 1 includes a dielectric electrode 11 (first dielectric electrode) and metal electrode pairs 10H and 10L (a pair of first electrodes) provided discretely on the upper surface of the dielectric electrode 11. (Partial metal electrode).
- the ground-side electrode constituting section 2 includes a dielectric electrode 21 (second dielectric electrode) and metal electrode pairs 20H and 20L (a pair of second partial metals) that are separately provided on the lower surface of the dielectric electrode 21. Electrode).
- the dielectric electrodes 11 and 21 each have a flat plate structure having a rectangular shape in plan view in which the X direction is the longitudinal direction and the Y direction is the short direction.
- the gas ejection holes 31 are formed as three or more gas ejection holes along the X direction (first direction) in the central region R51 in the main region 70.
- To 37 and gas ejection holes 41 to 47 are provided.
- Each of the gas ejection holes 31 to 37 and 41 to 47 is formed in a circular shape with a (straight) diameter r1 in the opening cross-sectional shape in plan view.
- Seven gas ejection holes 31 to 37 are formed in a line along the X direction, and among the gas ejection holes 31 to 37, gas ejection holes 3i, 3i,
- seven gas ejection holes 41 to 47 (second number of second gas ejection holes) are formed in a line shape along the X direction, and the gas ejection holes 41 to 47 are adjacent to each other.
- the second hole pitch d4 and the first hole pitch d3 are desirably set to the same length.
- gas ejection holes 31 to 37 and the gas ejection holes 41 to 47 are provided in a two-row configuration with a spacing dY (predetermined spacing) in the Y direction.
- the active gas generation apparatus has the above-described characteristics, so that the gas ejection holes 3i (or the gas ejection holes 3 () that are closest to each other along the X direction (first direction).
- the length can be shortened to half of d4.
- the active gas generator of Embodiment 1 has a substantial hole pitch (differential hole pitch d34 or differential hole pitch d43) shorter than the first hole pitch d3 and the second hole pitch d4 (first and second intervals).
- the active gas having high uniformity can be ejected by ejecting the active gas from the gas ejection holes 31 to 37 and 41 to 47 having the above.
- the dielectric electrode 21 has a boundary region between the main region 70 and the end regions 72 and 73 so as to sandwich all the gas ejection holes 31 to 37 and 41 to 47, that is, Rectification step-shaped portions 52 and 53 (a pair of end portions) that protrude upward (in the + Z direction) and are formed along the Y direction (in the second direction) in the vicinity of the end portions of the metal electrode pairs 20H and 20L.
- a region step portion A region step portion.
- Each of the rectifying step shape portions 52 and 53 is formed to extend in the Y direction (+ Y direction and ⁇ Y direction) to a position exceeding at least the formation position of the metal electrode pairs 20H and 20L in plan view.
- the rectifying step shape portions 52 and 53 may be formed to extend in the Y direction over the entire length of the dielectric electrode 21 in the short direction, and may define the gap length in the discharge space.
- the presence of the rectifying step shape portions 52 and 53 restricts the flow of the raw material gas 6 into the discharge space from both ends of the dielectric electrode 21 in the X direction.
- the gas injection holes 31 and 37 and the gas injection holes 41 and 47 in the vicinity of both ends of the dielectric electrode 21 are affected by the inflow amount of the active gas. easy. This problem is solved by providing step shape portions 52 and 53 for rectification.
- the gas flow 8 between the high voltage side electrode constituting portion 1 and the ground side electrode constituting portion 2 is performed. Is surely only from two surfaces in the Y direction. That is, as shown in FIG. 2, the source gas 6 is supplied mainly from the gas flow 8 from the + Y direction to the gas ejection holes 31 to 37, and the gas flow from the ⁇ Y direction is mainly transmitted from the gas ejection holes 41 to 47.
- the raw material gas 6 is supplied only by 8. Therefore, since the gas flow itself is relatively stabilized, the pressure distribution in the discharge space is constant, and a uniform discharge space can be formed.
- the dielectric electrode 21 further includes the rectifying step shape portions 52 and 53, so that the gas ejection holes 31 having a short distance from both ends in the X direction among the gas ejection holes 31 to 37 and 41 to 47. Also, the phenomenon that the inflow amount of the active gas changes due to the unintentional inflow of gas from the both end portions does not occur in the gas injection holes 41 and 47 and the gas ejection holes 41 and 47 as well. Therefore, the active gas can be ejected without causing a variation between the gas ejection holes 31 to 37 and 41 to 47. As a result, since the pressure distribution is constant and the flow rates of the gas ejection holes 31 to 37 and 41 to 47 are the same, the generated radical density is relatively equal in the active gas that has passed through the discharge space.
- the active gas generation apparatus has the X-direction of the dielectric electrode 21 (second dielectric electrode) due to the presence of the rectifying step shape portions 52 and 53 (a pair of end region step portions).
- FIG. 3 is an explanatory view schematically showing a connection relationship between the high-voltage side electrode constituent unit 1 and the ground-side electrode constituent unit 2 and the high-frequency power source 5.
- the metal electrode pairs 20H and 20L of the ground side electrode constituting unit 2 are both connected to the ground level, and the metal electrode pairs 10H and 10L of the high voltage side electrode constituting unit 1 are commonly connected from the high frequency power source 5. Receive AC voltage.
- the zero peak value or the frequency can be set differently between the high frequency power supplies 5H and 5L.
- a region where the metal electrode pairs 10H and 10L and the metal electrode pairs 20H and 20L overlap in plan view is a discharge space. It is prescribed.
- the source gas 6 passing through the discharge space DSH between the metal electrode 10H (one-side first partial metal electrode) and the metal electrode 20H (one-side second partial metal electrode) is activated in the discharge space DSH,
- the active gas 7 is mainly ejected from the gas ejection holes 31 to 37.
- the source gas 6 that passes through the discharge space DSL between the metal electrode 10L (the other first partial metal electrode) and the metal electrode 20L (the other second partial metal electrode) is activated in the discharge space DSL.
- the active gas 7 is mainly ejected from the gas ejection holes 41 to 47.
- FIG. 4 is a perspective view schematically showing an outer configuration of the electrode group constituent unit 101 including the high voltage side electrode constituent unit 1 and the ground side electrode constituent unit 2 according to the first embodiment.
- the source gas 6 supplied along the gas supply direction D1H ( ⁇ Y direction) along the Y direction passes through the discharge space DSH (see FIG. 3) between the metal electrode 10H and the metal electrode 20H.
- the active gas 7 is mainly ejected from the gas ejection holes 31 to 37 in the ⁇ Z direction.
- the source gas 6 supplied along the gas supply direction D1L (+ Y direction) along the Y direction passes through the discharge space DSL (see FIG. 3) between the metal electrode 10L and the metal electrode 20L, and the discharge space. It is activated by DSL and is mainly ejected in the ⁇ Z direction as the active gas 7 from the gas ejection holes 41 to 47. Therefore, the gas supply direction D1H is the -Y direction, the gas supply direction D1L is the + Y direction, and the gas ejection direction D2 is the -Z direction.
- the active gas 7 is applied to the wafer 64 by disposing the wafer 64, which is the substrate to be processed, directly below the gas ejection holes 31 to 37 and 41 to 47 in a processing space SP63 in the film forming processing chamber 63 described later. Can be supplied uniformly.
- the wafer 64 that is the substrate to be processed is damaged when the active gas 7 is generated. None give.
- the electrode group constituting unit 101 according to the first embodiment can be assembled by disposing the high voltage side electrode constituting unit 1 on the ground side electrode constituting unit 2. Specifically, while positioning so that the central region R50 of the dielectric electrode 11 in the high-voltage side electrode constituting portion 1 and the central region R51 of the dielectric electrode 21 in the ground-side electrode constituting portion 2 are completely overlapped in plan view.
- the electrode group component 101 can be completed by stacking and combining the high voltage electrode component 1 on the ground electrode component 2.
- FIG. 5 is an explanatory view schematically showing a basic configuration of an active gas generation apparatus according to Embodiment 2 of the present invention.
- FIG. 6 is explanatory drawing which expands and shows the several gas ejection hole shown in FIG. 5, and its periphery. 5 and 6 show the XYZ orthogonal coordinate system as appropriate.
- the high-voltage side electrode component 1 (first electrode component) and the ground-side electrode component 2B (second electrode component) provided below the high-voltage electrode component 1 ) And the basic configuration.
- the high-voltage side electrode configuration unit 1 is the same as the base technology shown in Embodiment 1 and FIGS. 16 and 17 shown in FIGS. To do.
- the ground-side electrode constituting part 2B is composed of a dielectric electrode 21B and metal electrode pairs 20H and 20L (a pair of second partial metal electrodes) provided separately from each other on the lower surface of the dielectric electrode 21B.
- the dielectric electrodes 11 and 21B each have a rectangular flat plate structure in which the X direction is the longitudinal direction and the Y direction is the short direction.
- dielectric electrode 21B (second dielectric electrode)
- dielectric electrode 21B third dielectric electrode
- gas ejection holes 31 to 37 and gas ejection holes 41 to 47 are provided. That is, also in the gas ejection holes 31 to 37 and the gas ejection holes 41 to 47 of the second embodiment, the same first hole pitch d3, second hole pitch d4, differential hole pitch d34, and differential hole pitch as in the first embodiment. d43 and interval dY are set.
- the gas ejection holes 31 to 37 and the gas ejection holes 41 to 47 are arranged along the X direction (first direction). And the gas ejection holes 4i are alternately arranged.
- the dielectric electrode 21 ⁇ / b> B further includes an ejection port separation step shape portion 51 (center region step portion) formed to protrude upward (+ Z direction) in the center region R ⁇ b> 51. Yes.
- the injection port separation stepped portion 51 is formed without overlapping the gas injection holes 31 to 37 and 41 to 47 in plan view.
- the ejection port separation step shape portion 51 further includes an end step shape portion 51t for filling between the rectification step shape portions 52 and 53 at both ends in the X direction of the ejection port separation step shape portion 51.
- an end step shape portion 51t for filling between the rectification step shape portions 52 and 53 at both ends in the X direction of the ejection port separation step shape portion 51.
- the active gas generation apparatus has an injection port having the central transverse step shape portion 51c, the first hole separation step shape portion 51h, the second hole separation step shape portion 51l, and the end step shape portion 51t. It is characterized in that a separation step shape portion 51 is further provided.
- the active gas generation apparatus of the second embodiment has gas ejection holes 31 to 37 (first number of first ejection holes) by six first hole separation step shape portions 51h (a plurality of first separation portions). Interference between the gas ejection holes 41 to 47 (second number of second ejection holes) by the six second hole separation step shape parts 51l (a plurality of second separation parts). Can be suppressed.
- the active gas generator of Embodiment 2 suppresses interference between the gas ejection holes 31 to 37 and the gas ejection holes 41 to 47 by the central transverse step shape portion 51c (third separation portion). it can.
- the active gas generation device of the second embodiment has an effect that active gas with higher uniformity can be ejected from the gas ejection holes 31 to 37 and 41 to 47 (a plurality of ejection holes).
- FIG. 7 is an explanatory view schematically showing a cross-sectional structure of a film forming apparatus realized by using the active gas generating apparatus of the second embodiment.
- the dielectric electrode 21B and the dielectric electrode 11 taken along the line AA of FIG. 6 are shown.
- the electrode group constituting unit 102 includes metal electrodes 20H and 20L, which will be described later, and metal electrodes 10H and 10L. Simplification is made as appropriate by omitting illustration.
- the film formation processing chamber 63 accommodates a wafer 64 that is a substrate to be processed placed on the bottom surface, and functions as a substrate accommodating portion that accommodates the wafer 64 in the processing space SP63.
- the electrode group constituent part 102 composed of the high voltage side electrode constituent part 1 and the ground side electrode constituent part 2B is a main part of the active gas generating device of the second embodiment.
- the active gas 7 is disposed in the processing space SP63 of the film forming processing chamber 63 from the gas ejection holes 31 to 37 and 41 to 47 discretely formed in the dielectric electrode 21B of the ground side electrode constituting section 2 It spouts toward the wafer 64.
- the film formation processing chamber 63 is characterized in that it is disposed so as to directly receive the active gas 7 ejected from the gas ejection holes 31 to 37 and 41 to 47 of the active gas generation apparatus of the second embodiment. Yes.
- the film formation processing apparatus shown in FIG. 7 is arranged below the ground-side electrode constituent part 2B of the electrode group constituent part 102 in the active gas generating apparatus of the second embodiment, and an internal wafer 64 (processing target substrate).
- the wafer 64 in the processing space SP63 of the film forming chamber 63 is ejected from a plurality of gas ejection holes 31 to 37 and 41 to 47.
- the activated gas 7 can be directly received. Therefore, the processing chamber 63 can perform the film forming process using the active gas 7 on the wafer 64.
- the formation length of the gas ejection holes 31 to 37 and 41 to 47 in the X direction is LA
- the formation length of the wafer 34 is made to coincide with this formation length LA
- the electrode group constituting portion 102 is set to the Y with respect to the wafer 64.
- the active gas 7 can be supplied to the entire wafer 64 by supplying the active gas 7 while moving along the direction.
- the electrode group constituting unit 101 may be fixed and the wafer 64 may be moved.
- the pressure in the discharge space in the active gas generating apparatus of the second embodiment is set to 10 kPa to atmospheric pressure, and the pressure in the film forming process chamber 63 is set to be equal to or lower than the pressure in the discharge space. Is desirable.
- FIG. 7 shows an example applied to the active gas generation device of the second embodiment
- the gas ejection holes of the active gas generation device of the first embodiment also apply to the active gas generation device of the first embodiment. If the active gas 7 ejected from 31 to 37 and 41 to 47 is arranged so as to be directly received by the film forming process chamber 63, the same effect as in the second embodiment can be obtained.
- FIG. 8 is an explanatory diagram schematically showing a connection relationship between the high-voltage power source 5 and the high-voltage side electrode constituent unit 1 and the ground-side electrode constituent unit 2 in the first mode.
- the first mode is characterized by having two high-frequency power supplies 5H and 5L that operate independently of each other.
- the metal electrode 20H (one-side second partial metal electrode) of the ground-side electrode constituting unit 2 is connected to the ground level on the high-frequency power source 5H side, and the metal electrode 10H of the high-voltage side electrode constituting unit 1 An AC voltage is applied from the high-frequency power source 5H to (one side first partial metal electrode).
- the metal electrode 20L (the second partial metal electrode on the other side) of the ground side electrode constituting part 2 is connected to the ground level on the high frequency power supply 5L side, and the metal electrode 10L (the other side first electrode on the high voltage side electrode constituting part 1). AC voltage is applied from the high frequency power source 5L.
- the high-frequency power supplies 5H and 5L can apply an AC voltage between the metal electrodes 10H and 10L and the metal electrodes 20H and 20L with the zero peak value fixed at 2 to 10 kV and the frequency set at 10 kHz to 100 kHz, respectively.
- the zero peak value or the frequency can be set differently between the high frequency power supplies 5H and 5L.
- a region where the metal electrode 10H and the metal electrode 20H overlap in plan view is a discharge space DSH in the dielectric space where the dielectric electrodes 11 and 21 face each other. (One-side discharge space).
- the active gas generation apparatus includes the high-frequency power supplies 5H and 5L provided independently of each other, and applies an AC voltage (one-side AC voltage) from the high-frequency power supply 5H. Therefore, a discharge space DSH (one side discharge space) is formed, and a discharge space DSL (the other side discharge space) is formed by applying an AC voltage (the other side AC voltage) from the high frequency power source 5L.
- the active gas generation apparatus has the injection port separation step shape portion 51 on the upper surface of the dielectric electrode 21B.
- the gas ejection holes 31 to 37 are provided in the direction of the metal electrode 10H and the metal electrode 20H with reference to the central transverse step shape portion 51c (third separation portion), and the gas ejection holes 41 to 47 are formed in the central transverse step shape portion.
- 51c is provided in the direction of the metal electrode 10L and the metal electrode 20L. If the formation height of the central transverse step shape portion 51c is set to the gap length between the discharge space DSL and the discharge space DSH, the gas ejection holes 31 to 37 and the gas ejection holes 41 to 47 are completely blocked. Can do.
- the source gas 6H (first source gas) supplied to the discharge space DSH and the source gas 6L (second source material) supplied to the discharge space DSL By changing the type of each other as gas), different active gases 7H and 7L (first active gas and second active gas) can be ejected. That is, the active gas 7H obtained by the source gas 6H passing through the discharge space DSH is ejected from the gas ejection holes 31 to 37, and the active gas 7L obtained by the source gas 6L passing through the discharge space DSL is ejected from the gas ejection hole 41. Can be ejected from ⁇ 47.
- the gas contact region which is a region in contact with the active gas, of the high voltage side electrode constituting unit 1 and the ground side electrode constituting unit 2 (2B) is quartz, Alternatively, it is desirable to form alumina as a constituent material.
- the third aspect suppresses the deactivation of the active gas between the gas contact region and the active gas.
- the active gas 7 can be ejected from the gas ejection holes 31 to 37 and 41 to 47.
- a higher-density active gas 7 can be generated from the source gas 6 containing at least one of nitrogen, oxygen, fluorine, rare gas, and hydrogen.
- the fifth aspect has an effect that the ejection amount can be set differently between the plurality of gas ejection holes 31 to 37 and 41 to 47.
- a precursor gas (precursor gas) may be employed as the supplied source gas 6.
- the source gas 6 as a precursor gas (precursor gas)
- the precursor gas that becomes a deposition material as a film can also be supplied to the surface of the wafer 64 to form a film.
- the rectifying step shape portions 52 and 53 and the injection port separation step shape portion 51 formed on the upper surface of the dielectric electrode 21B of the second embodiment are the high voltage side electrode constituting portion 1 and the ground side electrode constituting portion 2B. It is desirable to function also as a spacer that defines the gap length (distance in the Z direction between the dielectric electrode 11 and the dielectric electrode 21B) in the discharge space.
- the above effect can also be achieved by setting the gap length in the discharge space according to the formation height of the rectifying step shape portions 52 and 53.
- the dielectric electrode 21 (21B) has a flat plate structure having a rectangular shape in plan view.
- the metal electrode pair 20H and 20L having a shape can be disposed on the lower surface of the dielectric electrode 21 so as to face each other with the central region R51 of the dielectric electrode 21 (21B) in plan view, the shape is There is no particular limitation.
- the planar shape of the dielectric electrode 21 may be modified such as by rounding corners while basically adopting a rectangular shape. The same applies to the dielectric electrode 11.
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Abstract
Description
図14は3個以上の複数のガス噴出孔を有する円盤状の電極構造を採用した前提技術となる活性ガス生成装置の基本構成を模式的に示す説明図である。同図では上部から斜め下方に視た概略を示す図を示している。また、図15は図14で示した複数のガス噴出孔及びその周辺を拡大して示す説明図である。なお、図14及び図15に適宜、XYZ直交座標系を示している。
図1はこの発明の実施の形態1である活性ガス生成装置の基本構成を模式的に示す説明図である。同図では上部から斜め下方に視た概略を示す図を示している。また、図2は図1で示した複数のガス噴出孔及びその周辺を拡大して示す説明図である。なお、図1及び図2に適宜、XYZ直交座標系を示している。
図5はこの発明の実施の形態2である活性ガス生成装置の基本構成を模式的に示す説明図である。同図では上部から斜め下方に視た概略を示す図を示している。また、図6は図5で示した複数のガス噴出孔及びその周辺を拡大して示す説明図である。なお、図5及び図6に適宜、XYZ直交座標系を示している。
以下、実施の形態1及び実施の形態2の活性ガス生成装置における他の態様を説明する。なお、以下に述べる態様において実施の形態1及び実施の形態2で共通する態様については説明の都合上、原則、実施の形態1を代表して説明する。
図8は第1の態様における高電圧側電極構成部1及び接地側電極構成部2と高周波電源5との接続関係を模式的に示す説明図である。同図に示すように、第1の態様では、互いに独立した動作する2つの高周波電源5H及び5Lを有することを特徴としている。
実施の形態2の活性ガス生成装置は、誘電体電極21Bの上面上に噴射口分離用段差形状部51を有している。
実施の形態1及び実施の形態2の活性ガス生成装置において、高電圧側電極構成部1及び接地側電極構成部2(2B)のうち、活性ガスと接触する領域であるガス接触領域を石英、あるいはアルミナを構成材料として形成することが望ましい。
実施の形態1及び実施の形態2の活性ガス生成装置において、原料ガス6として例えば窒素、酸素、弗素、希ガス及び水素のうち少なくとも一つを含むガスが考えられる。これら原料ガス6が電極群構成部101の外周部からガス供給方向D1(D1H,D1L)に沿って内部へと進み、内部の放電空間DSH及びDSLを経由して活性ガス7となり、活性ガス7(ラジカルを含んだガス)は誘電体電極21(21B)に設けられた複数のガス噴出孔31~37及び41~47からガス噴出方向D2に沿って後述する成膜処理チャンバ63の処理空間SP63(図5参照)へと噴出される。成膜処理チャンバ63内において、反応性の高い活性ガスを利用することで処理対象基板であるウェハ64に対し成膜処理を行うことができる。
実施の形態1及び実施の形態2の活性ガス生成装置において、複数のガス噴出孔の形状(直径)を複数のガス噴出孔31~37及び41~47間で互いに異なるように設定する変形構成も考えられる。
実施の形態1及び実施の形態2の活性ガス生成装置において、供給される原料ガス6として、前駆体ガス(プリカーサガス)を採用しても良い。
実施の形態2の誘電体電極21Bの上面上に形成される、整流用段差形状部52及び53並びに噴射口分離用段差形状部51は高電圧側電極構成部1と接地側電極構成部2Bとの間の放電空間におけるギャップ長(誘電体電極11,誘電体電極21B間のZ方向の距離)を規定するスペーサとしても機能させることが望ましい。
なお、上述した実施の形態1及び実施の形態2では、誘電体電極21(21B)を平面視矩形状の平板構造としたが、図1,図4及び図5に示すように、平面視矩形状の金属電極対20H及び20Lを平面視して誘電体電極21(21B)の中央領域R51を挟んで互いに対向するように、誘電体電極21の下面上に配置可能であれば、その形状は特に限定されない。例えば、誘電体電極21の平面形状を、基本的には矩形状を採用しつつ角部を丸める等の変形を加えても良い。同様なことは、誘電体電極11についても当てはまる。
2 接地側電極構成部
5,5H,5L 高周波電源
11,21,21B 誘電体電極
10H,10L,20H,20L 金属電極
31~37,41~47 ガス噴出孔
51 噴射口分離用段差形状部
51c 中央横断段差形状部
51h 第1孔分離段差形状部
51l 第2孔分離段差形状部
52,53 整流用段差形状部
63 成膜処理チャンバ
64 ウェハ
R50,R51 中央領域
Claims (10)
- 放電空間に供給された原料ガスを活性化して得られる活性ガスを生成する活性ガス生成装置であって、
第1の電極構成部(1)と
前記第1の電極構成部の下方に設けられる第2の電極構成部(2,2B)とを備え、前記第1及び第2の電極構成部に交流電圧が印加され、前記交流電圧の印加により、前記第1及び第2の電極構成部間に前記放電空間が形成され、
前記第1の電極構成部は、第1の誘電体電極(11)と前記第1の誘電体電極の上面上に選択的に形成される第1の金属電極(10H,10L)とを有し、前記第2の電極構成部は、第2の誘電体電極(21A,21B)と前記第2の誘電体電極の下面上に選択的に形成される第2の金属電極(20H,20L)とを有し、前記交流電圧の印加により前記第1及び第2の誘電体電極が対向する誘電体空間内において、前記第1及び第2の金属電極が平面視重複する領域が前記放電空間として規定され、
前記第2の金属電極は、平面視して前記第2の誘電体電極の中央領域(R51)を挟んで互いに対向して形成される一対の第2の部分金属電極(20H,20L)を有し、前記一対の第2の部分金属電極は第1の方向を電極形成方向とし、前記第1の方向に交差する第2の方向を互いに対向する方向としており、
前記第1の金属電極は、平面視して前記一対の第2の部分金属電極と重複する領域を有する一対の第1の部分金属電極(10H,10L)を有し、
前記第2の誘電体電極は、
前記中央領域に形成され、前記活性ガスを外部に噴出するための複数のガス噴出孔(31~37,41~47)と、
前記複数のガス噴出孔の全てを挟んで前記第1の方向の両端側に、各々が上方に突出し前記第2の方向に沿って形成される一対の端部領域段差部(52,53)とを有し、前記一対の端部領域段差部は平面視して少なくとも前記一対の第2の部分金属電極の形成位置を超える位置まで前記第2の方向に延びて形成され、
前記複数のガス噴出孔は、
前記第1の方向に沿って第1の間隔毎に形成される、3個以上の第1の数の第1の噴出孔(31~37)と、
前記第1の数の第1の噴出孔に対し前記第2の方向に所定間隔隔てて配置され、前記第1の方向に沿って第2の間隔毎に形成される、3個以上の第2の数の第2の噴出孔(41~47)とを含み、
前記第1の数の第1の噴出孔及び前記第2の数の第2の噴出孔は、前記第1の方向に沿って第1の噴出孔と第2の噴出孔とが交互に配置されるように形成されることを特徴とする、
活性ガス生成装置。 - 請求項1記載の活性ガス生成装置であって、
前記第2の誘電体電極は、
前記中央領域において上方に突出して形成される中央領域段差部(51)をさらに備え、
前記中央領域段差部は、
各々が前記第2の方向に沿って形成され、前記第1の数の第1の噴出孔のうち互いに隣接する第1の噴出孔間を分離する複数の第1の分離部(51h)と、
各々が前記第2の方向に沿って形成され、前記第2の数の第2の噴出孔のうち互いに隣接する第2の噴出孔間を分離する複数の第2の分離部(51l)と、
前記第1の方向に沿って形成され、前記第1の数の第1の噴出孔と前記第2の数の第2の噴出孔との間を分離する第3の分離部(51c)とを有する、
活性ガス生成装置。 - 請求項1または請求項2に記載の活性ガス生成装置であって、
前記交流電圧は互いに独立した一方側交流電圧及び他方側交流電圧を含み、前記放電空間は互いに分離して形成される一方側放電空間及び他方側放電空間を含み、
前記一対の第1の部分金属電極は一方側第1の部分金属電極(10H)及び他方側第1の部分金属電極(10L)を有し、
前記一対の第2の部分金属電極は一方側第2の部分金属電極(20H)及び他方側第2の部分金属電極(20L)を有し、前記一方側交流電圧の印加により前記一方側第1及び第2の部分金属電極間に前記一方側放電空間が形成され、前記他方側交流電圧の印加により前記他方側第1及び第2の部分金属電極間に前記他方側放電空間が形成される、
活性ガス生成装置。 - 請求項2記載の活性ガス生成装置であって、
前記放電空間は互いに分離して形成される一方側放電空間及び他方側放電空間を含み、
前記一対の第1の部分金属電極は一方側第1の部分金属電極及び他方側第1の部分金属電極を有し、
前記一対の第2の部分金属電極は一方側第2の部分金属電極及び他方側第2の部分金属電極を有し、前記一方側第1及び第2の部分金属電極間に前記一方側放電空間が形成され、前記他方側第1及び第2の部分金属電極間に前記他方側放電空間が形成され、
前記第1の数の第1の噴出孔は前記第3の分離部を基準として前記一方側第1及び第2の部分金属電極の方向に設けられ、前記第2の数の第2の噴出孔は前記第3の分離部を基準として前記他方側第1及び第2の部分金属電極の方向に設けられ、
前記原料ガスは互いに独立して供給される第1及び第2の原料ガスを含み、前記活性ガスは第1及び第2の活性ガスを含み、
前記第1の原料ガスが前記一方側放電空間を通過して得られる前記第1の活性ガスが前記第1の数の第1の噴出孔から噴出され、前記第2の原料ガスが前記他方側放電空間を通過して得られる前記第2の活性ガスが前記第2の数の第2の噴出孔から噴出される、
活性ガス生成装置。 - 請求項1または請求項2に記載の活性ガス生成装置であって、
前記第1及び第2の電極構成部のうち、活性ガスと接触する領域であるガス接触領域を石英、またはアルミナを構成材料として形成したことを特徴とする、
活性ガス生成装置。 - 請求項1または請求項2に記載の活性ガス生成装置であって、
前記原料ガスは窒素、酸素、弗素、希ガス及び水素のうち少なくとも一つを含むガスである、
活性ガス生成装置。 - 請求項1または請求項2に記載の活性ガス生成装置であって、
前記複数のガス噴出孔の形状が前記複数のガス噴出孔間で互いに異なるように設定されることを特徴とする、
活性ガス生成装置。 - 請求項1または請求項2に記載の活性ガス生成装置であって、
前記原料ガスは、前駆体ガスである、
活性ガス生成装置。 - 請求項2に記載の活性ガス生成装置であって、
前記一対の端部領域段差部及び前記中央領域段差部の形成高さにより、前記放電空間におけるギャップ長が規定される、
活性ガス生成装置。 - 請求項1または請求項2に記載の活性ガス生成装置(102)と、
前記第2の電極構成部の下方に配置され、内部の処理対象基板(64)に対し活性ガスによる成膜処理を行う成膜処理チャンバ(63)とを備え、
前記成膜処理チャンバは、前記活性ガス生成装置の前記複数のガス噴出孔から噴出される前記活性ガスを直接受けるように配置されることを特徴とする、
成膜処理装置。
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