JP7366072B2 - 薄膜の応力を軽減するためのインシトゥ高電力注入 - Google Patents
薄膜の応力を軽減するためのインシトゥ高電力注入 Download PDFInfo
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- JP7366072B2 JP7366072B2 JP2020570738A JP2020570738A JP7366072B2 JP 7366072 B2 JP7366072 B2 JP 7366072B2 JP 2020570738 A JP2020570738 A JP 2020570738A JP 2020570738 A JP2020570738 A JP 2020570738A JP 7366072 B2 JP7366072 B2 JP 7366072B2
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Classifications
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- H01L21/033—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers
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- 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
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- 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
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Description
高電圧RFバイアスは、静電チャック内に配置された第3の電極を介して、RF電力発生器から静電チャックに供給されうる。
Claims (19)
- 基板を処理する方法であって、
処理チャンバ内に配置された静電チャックに第1の電力レベルを有する第1のRF電力を印加して、前記静電チャックの上に位置付けられた基板の上に形成された膜積層体の上に炭素ハードマスクを堆積することと、
前記炭素ハードマスクにイオンを注入することであって、前記炭素ハードマスクを堆積することと、前記炭素ハードマスクにイオンを注入することとが、同じ処理チャンバ内で実行される、イオンを注入することと、
前記炭素ハードマスクを前記膜積層体の上に堆積した後に、前記炭素ハードマスクを形成するための炭化水素含有ガスの流れを中断することと、
前記第1のRF電力を、前記第1の電力レベルから、前記処理チャンバ内のプラズマを維持するのに十分な第2の電力レベルまで低減することと、
前記炭素ハードマスクが所定の厚さに達するまで、前記炭素ハードマスクを堆積することと、前記炭素ハードマスクにイオンを注入することとを周期的に繰り返すことと
を含む、方法。 - 前記炭素ハードマスクを堆積することが、前記第1のRF電力を、前記静電チャック内に配置された第1の電極を介して、前記静電チャックに印加することによって実行される、請求項1に記載の方法。
- 前記第1のRF電力が、0.4MHzから300MHzの周波数において、1キロワットから10キロワットの範囲内にある、請求項2に記載の方法。
- 前記炭素ハードマスクにイオンを注入することが、前記静電チャック内に配置された第2の電極を介して、前記静電チャックにDCバイアス電圧を印加することによって実行される、請求項1に記載の方法。
- 前記DCバイアス電圧が、2キロボルトから15キロボルトの範囲内にある、請求項4に記載の方法。
- 前記DCバイアス電圧が、5マイクロ秒から30ミリ秒のパルス幅で、10Hzから10kHzのパルス周波数で供給される、請求項4に記載の方法。
- 前記炭素ハードマスクにイオンを注入することが、前記静電チャック内に配置された第3の電極を介して、前記静電チャックに第2のRF電力を印加することによって実行される、請求項1に記載の方法。
- 前記第2のRF電力が、0.4MHzから300MHzの周波数において、1キロワットから10キロワットの範囲内にある、請求項7に記載の方法。
- 前記第2のRF電力が、10%から80%の範囲内のデューティサイクルでパルス化される、請求項8に記載の方法。
- 基板を処理する方法であって、
基板の上に炭素ハードマスクを堆積することであって、プラズマを生成するために基板が位置付けられる静電チャックにRFバイアスを印加することによって、炭素ハードマスクを堆積することと、
前記基板の上に前記炭素ハードマスクを堆積しつつ、前記RFバイアスを使用して、前記プラズマから前記炭素ハードマスクにイオンを注入することであって、前記炭素ハードマスクを堆積することと、前記炭素ハードマスクにイオンを注入することとが、同じ処理チャンバ内で同時に実行される、イオンを注入することと
を含む、方法。 - 前記RFバイアスが、0.4MHzから300MHzの周波数において、1キロワットから15キロワットの範囲内にある、請求項10に記載の方法。
- 前記RFバイアスが、6keVから45keVの注入エネルギーを供給する、請求項10に記載の方法。
- 前記基板の上に前記炭素ハードマスクを堆積しつつ、前記静電チャックにDCバイアス電圧を印加すること
を更に含む、請求項10に記載の方法。 - 前記DCバイアス電圧が、1キロボルトから15キロボルトの範囲内にある、請求項13に記載の方法。
- 基板を処理する方法であって、
第1の電力レベルを有する第1のRF電力を、第1の電極を介して静電チャックに印加することによって、基板の上に形成された膜積層体の上にダイヤモンド状の炭素ハードマスクを堆積することであって、第1の電極が配置される静電チャックの上に基板が位置付けられる、ダイヤモンド状の炭素ハードマスクを堆積することと、
前記ダイヤモンド状の炭素ハードマスクにイオンを注入することであって、前記ダイヤモンド状の炭素ハードマスクを堆積することと、前記ダイヤモンド状の炭素ハードマスクにイオンを注入することとが、同じ処理チャンバ内で実行される、イオンを注入することと、
前記ダイヤモンド状の炭素ハードマスクが所定の厚さに達するまで、前記ダイヤモンド状の炭素ハードマスクを堆積することと、前記ダイヤモンド状の炭素ハードマスクにイオンを注入することとを周期的に繰り返すことと、
前記ダイヤモンド状の炭素ハードマスクをパターニングすることと、
パターニングされた前記ダイヤモンド状の炭素ハードマスクを使用して、前記膜積層体をエッチングすることと、
前記ダイヤモンド状の炭素ハードマスクを除去することと
を含む、方法。 - 前記ダイヤモンド状の炭素ハードマスクにイオンを注入することが、
前記ダイヤモンド状の炭素ハードマスクを前記膜積層体の上に堆積した後に、前記ダイヤモンド状の炭素ハードマスクを形成するための炭化水素含有ガスの流れを中断することと、
前記第1のRF電力を、前記第1の電力レベルから、前記処理チャンバ内のプラズマを維持するのに十分な第2の電力レベルまで低減することと
を更に含む、請求項15に記載の方法。 - 前記ダイヤモンド状の炭素ハードマスクにイオンを注入することが、前記静電チャックにパルス化されたDCバイアス電圧を印加することによって実行される、請求項15に記載の方法。
- 前記ダイヤモンド状の炭素ハードマスクにイオンを注入することが、前記静電チャックに第2のRF電力を印加することによって実行される、請求項15に記載の方法。
- 前記第2のRF電力が、10%から80%の範囲内のデューティサイクルでパルス化される、請求項18に記載の方法。
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US16/430,136 | 2019-06-03 | ||
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