JP6804277B2 - 処理方法および処理装置 - Google Patents
処理方法および処理装置 Download PDFInfo
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- JP6804277B2 JP6804277B2 JP2016232642A JP2016232642A JP6804277B2 JP 6804277 B2 JP6804277 B2 JP 6804277B2 JP 2016232642 A JP2016232642 A JP 2016232642A JP 2016232642 A JP2016232642 A JP 2016232642A JP 6804277 B2 JP6804277 B2 JP 6804277B2
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- 238000012545 processing Methods 0.000 title claims description 138
- 238000003672 processing method Methods 0.000 title claims description 18
- 239000007789 gas Substances 0.000 claims description 211
- 238000000034 method Methods 0.000 claims description 75
- 239000002243 precursor Substances 0.000 claims description 52
- 239000012495 reaction gas Substances 0.000 claims description 34
- 238000005530 etching Methods 0.000 claims description 29
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- -1 silicon alkoxide Chemical class 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 description 57
- 239000010408 film Substances 0.000 description 37
- 238000010926 purge Methods 0.000 description 33
- 238000006243 chemical reaction Methods 0.000 description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 16
- 238000001179 sorption measurement Methods 0.000 description 16
- 238000000231 atomic layer deposition Methods 0.000 description 12
- 229910052814 silicon oxide Inorganic materials 0.000 description 12
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 12
- 230000007423 decrease Effects 0.000 description 10
- 239000003507 refrigerant Substances 0.000 description 10
- 239000000758 substrate Substances 0.000 description 10
- 230000001186 cumulative effect Effects 0.000 description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 8
- 238000009530 blood pressure measurement Methods 0.000 description 7
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- 230000015654 memory Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 239000006227 byproduct Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 239000011261 inert gas Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 125000004429 atom Chemical group 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 150000003961 organosilicon compounds Chemical class 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 229910021331 inorganic silicon compound Inorganic materials 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- WZUCGJVWOLJJAN-UHFFFAOYSA-N diethylaminosilicon Chemical compound CCN([Si])CC WZUCGJVWOLJJAN-UHFFFAOYSA-N 0.000 description 2
- AWFPGKLDLMAPMK-UHFFFAOYSA-N dimethylaminosilicon Chemical compound CN(C)[Si] AWFPGKLDLMAPMK-UHFFFAOYSA-N 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 101100117387 Catharanthus roseus DPAS gene Proteins 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- BIVNKSDKIFWKFA-UHFFFAOYSA-N N-propan-2-yl-N-silylpropan-2-amine Chemical compound CC(C)N([SiH3])C(C)C BIVNKSDKIFWKFA-UHFFFAOYSA-N 0.000 description 1
- UOERHRIFSQUTET-UHFFFAOYSA-N N-propyl-N-silylpropan-1-amine Chemical compound CCCN([SiH3])CCC UOERHRIFSQUTET-UHFFFAOYSA-N 0.000 description 1
- CGRVKSPUKAFTBN-UHFFFAOYSA-N N-silylbutan-1-amine Chemical compound CCCCN[SiH3] CGRVKSPUKAFTBN-UHFFFAOYSA-N 0.000 description 1
- 229910007245 Si2Cl6 Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910003910 SiCl4 Inorganic materials 0.000 description 1
- 229910003818 SiH2Cl2 Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- LXEXBJXDGVGRAR-UHFFFAOYSA-N trichloro(trichlorosilyl)silane Chemical compound Cl[Si](Cl)(Cl)[Si](Cl)(Cl)Cl LXEXBJXDGVGRAR-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45557—Pulsed pressure or control pressure
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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
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H01L21/0228—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition deposition by cyclic CVD, e.g. ALD, ALE, pulsed CVD
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
- C23C16/401—Oxides containing silicon
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45502—Flow conditions in reaction chamber
- C23C16/45504—Laminar flow
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45527—Atomic layer deposition [ALD] characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations
- C23C16/45536—Use of plasma, radiation or electromagnetic fields
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45527—Atomic layer deposition [ALD] characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations
- C23C16/45536—Use of plasma, radiation or electromagnetic fields
- C23C16/45542—Plasma being used non-continuously during the ALD reactions
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45544—Atomic layer deposition [ALD] characterized by the apparatus
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/50—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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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
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Description
図1は、実施例1における処理装置10の一例を示す図である。本実施例における処理装置10は、例えば図1に示すように、表面が陽極酸化処理されたアルミニウム等により形成され、内部に略円筒形状の処理空間を画成するチャンバ21を有する。チャンバ21は、保安接地されている。本実施例における処理装置10は、例えば容量結合型平行平板プラズマ処理装置として構成されている。チャンバ21内には、セラミックス等で形成された絶縁板22を介して支持台23が配置される。支持台23上には例えばアルミニウム等で形成され、下部電極として機能するサセプタ24が設けられている。
図6は、実施例1における処理の手順の一例を示すフローチャートである。図6に示す処理は、主に制御装置60によって実行される。
図7は、実施例2における処理装置10の一例を示す図である。なお、以下に説明する点を除き、図7において、図1と同じ符号を付した構成は、図1における構成と同一または同様の機能を有するため説明を省略する。
図8は、実施例2における処理の手順の一例を示すフローチャートである。図8に示す処理は、主に制御装置60によって実行される。なお、以下に説明する点を除き、図8において、図6と同じ符号を付した処理は、図6において説明した処理と同様であるため説明を省略する。
上記した各実施例において、ALDの各サイクルにおける反応工程では、反応ガスをプラズマ化することにより活性種が生成されたが、開示の技術はこれに限られず、熱等の他の方法により活性種が生成されてもよい。
10 処理装置
21 チャンバ
24 サセプタ
25 静電チャック
36a〜36b 圧力計
37a〜37b バルブ
38 配管
40 上部電極
47 配管
48a〜48d ガス供給源
49a〜49d MFC
50a〜50d バルブ
60 制御装置
61 メモリ
62 プロセッサ
63 ユーザインターフェイス
73 排気装置
78 開口
Claims (10)
- 被処理体が収容されたチャンバ内の処理空間に対して第1のセンサを曝露すると共に、前記処理空間に対して第2のセンサを遮蔽する第1のステップと、
前記チャンバ内に前駆体ガスを含む第1の処理ガスを供給する第2のステップと、
前記第1のセンサの測定値に基づいて前記チャンバ内の状態を制御する第3のステップと、
前記処理空間に対して前記第1のセンサを遮蔽すると共に、前記処理空間に対して前記第2のセンサを曝露する第4のステップと、
前記チャンバ内に反応ガスを含む第2の処理ガスを供給する第5のステップと、
前記第2のセンサの測定値に基づいて前記チャンバ内の状態を制御する第6のステップと
を含み、
前記第1のステップから前記第6のステップまでの処理が複数回繰り返し実行されることを特徴とする処理方法。 - 前記第1のステップから前記第6のステップまでの処理は、前記被処理体に対する成膜処理の間に行われることを特徴とする請求項1に記載の処理方法。
- 前記第6のステップの次に、前記チャンバ内に前記第2の処理ガスのプラズマを生成する第7のステップをさらに含み、
前記第1のステップから前記第7のステップまでの処理が複数回繰り返し実行されることを特徴とする請求項1または2に記載の処理方法。 - 前記第1のステップから前記第7のステップまでの処理は、前記被処理体に対する成膜処理の間に行われることを特徴とする請求項3に記載の処理方法。
- 前記第1のステップから前記第7のステップまでの処理が所定回数繰り返し実行された後、前記第7のステップの次に、前記処理空間に対して前記第1のセンサを遮蔽すると共に、前記処理空間に対して前記第2のセンサを曝露する第8のステップと、
前記チャンバ内にエッチング用のガスを含む第3の処理ガスを供給する第9のステップと、
前記第2のセンサの測定値に基づいて前記チャンバ内の状態を制御する第10のステップと、
前記チャンバ内に前記第3の処理ガスのプラズマを生成する第11のステップと
をさらに含むことを特徴とする請求項3または4に記載の処理方法。 - 前記前駆体ガスは、ケイ素元素を含むガスであり、
前記反応ガスは、酸素元素、窒素元素、またはその両方の元素を含み、ケイ素元素を含まないガスであることを特徴とする請求項1から5のいずれか一項に記載の処理方法。 - 前記前駆体ガスは、アミノシラン系ガス、シリコンアルコキシド系ガス、または、ハロゲン元素およびケイ素元素を含むガスであることを特徴とする請求項1から6のいずれか一項に記載の処理方法。
- 前記第1のセンサおよび前記第2のセンサは、圧力計であり、
前記第3のステップでは、前記第1のセンサの測定値に基づいて前記チャンバ内の圧力が制御され、
前記第6のステップでは、前記第2のセンサの測定値に基づいて前記チャンバ内の圧力が制御されることを特徴とする請求項1から7のいずれか一項に記載の処理方法。 - 前記第1のセンサおよび前記第2のセンサは、キャパシタンスマノメータであることを特徴とする請求項8に記載の処理方法。
- 被処理体を収容するチャンバと、
第1のセンサと、
第2のセンサと、
前記チャンバ内の処理空間に対して前記第1のセンサを曝露または遮蔽する第1の遮蔽部と、
前記処理空間に対して前記第2のセンサを曝露または遮蔽する第2の遮蔽部と、
前記チャンバ内に前駆体ガスを含む第1の処理ガスを供給する第1の供給部と、
前記チャンバ内に反応ガスを含む第2の処理ガスを供給する第2の供給部と、
前記被処理体に対して行われる処理を制御する制御装置と
を備え、
前記制御装置は、
前記第1の遮蔽部を制御することにより前記処理空間に対して前記第1のセンサを曝露させると共に、前記第2の遮蔽部を制御することにより前記処理空間に対して前記第2のセンサを遮蔽させる第1のステップと、
前記第1の供給部を制御することにより前記チャンバ内に前記第1の処理ガスを供給させる第2のステップと、
前記第1のセンサの測定値に基づいて前記チャンバ内の状態を制御する第3のステップと、
前記第1の遮蔽部を制御することにより前記処理空間に対して前記第1のセンサを遮蔽させると共に、前記第2の遮蔽部を制御することにより前記処理空間に対して前記第2のセンサを曝露させる第4のステップと、
前記第2の供給部を制御することにより前記チャンバ内に前記第2の処理ガスを供給させる第5のステップと、
前記第2のセンサの測定値に基づいて前記チャンバ内の状態を制御する第6のステップとを含む処理を、複数回繰り返し実行することを特徴とする処理装置。
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