JP7118025B2 - 成膜方法 - Google Patents
成膜方法 Download PDFInfo
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- JP7118025B2 JP7118025B2 JP2019067802A JP2019067802A JP7118025B2 JP 7118025 B2 JP7118025 B2 JP 7118025B2 JP 2019067802 A JP2019067802 A JP 2019067802A JP 2019067802 A JP2019067802 A JP 2019067802A JP 7118025 B2 JP7118025 B2 JP 7118025B2
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- H—ELECTRICITY
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- 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
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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
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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
- C23C16/45534—Use of auxiliary reactants other than used for contributing to the composition of the main film, e.g. catalysts, activators or scavengers
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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
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- 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
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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
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- 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
- C23C16/45538—Plasma being used continuously during the ALD cycle
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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
- C23C16/4554—Plasma being used non-continuously in between 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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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—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
- C23C16/45548—Atomic layer deposition [ALD] characterized by the apparatus having arrangements for gas injection at different locations of the reactor for each ALD half-reaction
- C23C16/45551—Atomic layer deposition [ALD] characterized by the apparatus having arrangements for gas injection at different locations of the reactor for each ALD half-reaction for relative movement of the substrate and the gas injectors or half-reaction reactor compartments
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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
- C23C16/56—After-treatment
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- 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
- H01J37/32082—Radio frequency generated discharge
- H01J37/32137—Radio frequency generated discharge controlling of the discharge by modulation of energy
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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
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/32174—Circuits specially adapted for controlling the RF discharge
- H01J37/32183—Matching circuits
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Description
回転テーブルと共に回転する基板が通過するプラズマ処理領域に、希ガスと、当該希ガスへの添加によってペニング効果を生じる添加ガスとを含む着火用ガスを供給する工程と、
前記プラズマ処理領域に誘導磁界を形成するアンテナに整合器を介して電気的に接続される高周波電源の出力電力を第1の設定値に上げ、前記着火用ガスをプラズマ化する工程と、
前記高周波電源の出力電力を前記第1の設定値から第2の設定値に上げる工程と、
前記着火用ガスのプラズマ化の後で、前記プラズマ処理領域への前記添加ガスの供給を停止する工程と、
前記高周波電源の出力電力が前記第2の設定値に上昇した後で且つ前記添加ガスの供給が停止した後に、前記プラズマ処理領域でプラズマ化されるガスを、前記基板に膜を形成するのに用いる成膜用ガスに切り替える工程と、
前記高周波電源の出力電力が前記第2の設定値に上昇した後に、前記アンテナの回転中心線とは反対側の端部の高さを維持しつつ前記アンテナの前記回転中心線側の端部を持ち上げる工程とを有する。
図1は、一実施形態に係る成膜装置の断面図である。図2は、一実施形態に係る処理容器の内部構造を示す平面図である。図3は、一実施形態に係る第1の処理領域、分離領域及び第2の処理領域を回転テーブルの回転方向に沿って切断した断面図である。
図8は、一実施形態に係る成膜方法を示すフローチャートである。図8に示す工程S101~S107は、制御部100による制御下で実施される。
2 回転テーブル
2Z 回転中心線
83 アンテナ
83a 回転中心線側の端部
83b 回転中心線とは反対側の端部
84 整合器
85 高周波電源
100 制御部
P1 第1の処理領域
P2 第2の処理領域
P3 プラズマ処理領域
Claims (9)
- 回転テーブルと共に回転する基板が通過するプラズマ処理領域に、希ガスと、当該希ガスへの添加によってペニング効果を生じる添加ガスとを含む着火用ガスを供給する工程と、
前記プラズマ処理領域に誘導磁界を形成するアンテナに整合器を介して電気的に接続される高周波電源の出力電力を第1の設定値に上げ、前記着火用ガスをプラズマ化する工程と、
前記高周波電源の出力電力を前記第1の設定値から第2の設定値に上げる工程と、
前記着火用ガスのプラズマ化の後で、前記プラズマ処理領域への前記添加ガスの供給を停止する工程と、
前記高周波電源の出力電力が前記第2の設定値に上昇した後で且つ前記添加ガスの供給が停止した後に、前記プラズマ処理領域でプラズマ化されるガスを、前記基板に膜を形成するのに用いる成膜用ガスに切り替える工程と、
前記高周波電源の出力電力が前記第2の設定値に上昇した後に、前記アンテナの回転中心線とは反対側の端部の高さを維持しつつ前記アンテナの前記回転中心線側の端部を持ち上げる工程とを有する、成膜方法。 - 前記アンテナの前記回転中心線側の端部を持ち上げる速度が、8mm/秒以上、12mm/秒以下である、請求項1に記載の成膜方法。
- 前記高周波電源の出力電力を前記第1の設定値から前記第2の設定値に上げる時間が、0.5秒以上、2秒以下である、請求項1又は2に記載の成膜方法。
- 前記高周波電源の出力電力を前記第1の設定値から前記第2の設定値に上げる工程と、前記添加ガスの供給を停止する工程とが同時に行われる、請求項1~3のいずれか1項に記載の成膜方法。
- 前記成膜用ガスに切り替える工程と、前記アンテナの前記回転中心線側の端部の高さを上げる工程とが同時に行われる、請求項1~4のいずれか1項に記載の成膜方法。
- 前記基板が第1の処理領域、第2の処理領域及び前記プラズマ処理領域をこの順番で通過するように、前記基板を保持する前記回転テーブルを回転させる工程と、
前記第1の処理領域で、第1の処理ガスを前記基板に吸着させる工程と、
前記第2の処理領域で、前記第1の処理ガスと第2の処理ガスとの反応生成物の膜を前記基板に形成する工程と、
前記プラズマ処理領域で、プラズマ化された改質用ガスによって前記反応生成物の膜を改質する工程とを有し、
前記成膜用ガスは、前記改質用ガスである、請求項1~5のいずれか1項に記載の成膜方法。 - 前記第1の処理ガスは、シリコン含有ガスであり、
前記第2の処理ガスは、前記基板に吸着されたシリコン含有ガスを酸化する酸化用ガスであり、
前記反応生成物は、酸化シリコン膜である、請求項6に記載の成膜方法。 - 前記改質用ガスは、希ガスと、酸素ガスと、水素ガスとを含む、請求項7に載の成膜方法。
- 前記着火用ガスは、前記希ガスとしてアルゴンガスを含み、前記添加ガスとしてアンモニアガスを含む、請求項1~8のいずれか1項に記載の成膜方法。
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