JP6946320B2 - スペーサ用の窒化ケイ素膜の選択的堆積 - Google Patents
スペーサ用の窒化ケイ素膜の選択的堆積 Download PDFInfo
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Description
Claims (14)
- 頂部、底部および側壁を備える少なくとも1つの特徴部をその上に有する基板表面を、用意することと、
前記少なくとも1つの特徴部上に膜を、前記膜が前記頂部上、前記底部上および前記側壁上に形成されるように、形成することと、
前記膜をプラズマで処理して、前記特徴部の前記頂部および前記底部が、前記側壁上の前記膜よりも10倍より高いウェットエッチング速度を有するように、前記特徴部の前記頂部上および前記底部上の前記膜の特性を変化させることであって、前記膜を処理することが、10 10 /cm 3 以上のイオン濃度を有する指向性プラズマに前記膜を曝すことを含む、前記膜の特性を変化させることと
を含む処理方法。 - 順次的に前記膜を形成して前記膜を処理することを繰り返して、ある総厚さの膜を堆積させることをさらに含む、請求項1に記載の方法。
- 前記膜が、SiNを含む、請求項1に記載の方法。
- 前記プラズマが、水素、アルゴン、窒素、アンモニア、酸素、ヘリウムのうちの1つ以上を含む、請求項1に記載の方法。
- 前記指向性プラズマが、縁部を有するスロットを有するプラズマアセンブリ内に形成された遠隔プラズマであり、前記プラズマが、前記スロットを通って流れる、請求項1に記載の方法。
- 前記膜を形成することが、前記基板表面をケイ素前駆体および窒素反応物に順次的に曝して、窒化ケイ素膜を形成することを含む、請求項1に記載の方法。
- 前記基板表面が、前記ケイ素前駆体への曝露と前記窒素反応物への曝露との間で窒素前駆体に曝され、前記窒素前駆体が、前記基板表面上のケイ素前駆体分子と反応しない種を含む、請求項6に記載の方法。
- 前記膜を形成することが、前記基板表面を、ジクロロシランを含むケイ素前駆体、アンモニアを含む窒素前駆体、およびN2/Arプラズマを含む窒素反応物に順次的に曝すことを含む、請求項7に記載の方法。
- 前記プラズマを処理することが、アンモニアおよびヘリウムを含む、請求項7に記載の方法。
- 前記特徴部の前記頂部および前記底部の前記ウェットエッチング速度が、20Å/分以上である、請求項9に記載の方法。
- 1Å〜50Åの範囲の厚さを有する膜が堆積された後に、前記膜を処理することが行われる、請求項1に記載の方法。
- 希HFで前記膜をエッチングして、前記特徴部の前記頂部および前記底部から前記膜を選択的に除去することをさらに含む、請求項1に記載の方法。
- 頂部、底部および側壁を備える特徴部を有する基板表面を有する基板を、各プロセス領域がガスカーテンによって隣接するプロセス領域から分離されている複数のプロセス領域を備える処理チャンバ内に配置することと、
前記基板表面の少なくとも一部を、前記処理チャンバの第1のプロセス領域内で、ケイ素前駆体を含む第1のプロセス条件に曝すことと、
前記基板表面を、ガスカーテンを通って前記処理チャンバの第2のプロセス領域へ、横方向に移動させることと、
前記基板表面を、前記処理チャンバの前記第2のプロセス領域内で、窒素前駆体を含む第2のプロセス条件に曝すことと、
前記基板表面を、ガスカーテンを通って前記処理チャンバの第3のプロセス領域へ、横方向に移動させることと、
前記基板表面を、前記処理チャンバの前記第3のプロセス領域内で、窒素反応物を含む第3のプロセス条件に曝して、前記特徴部の前記頂部上、前記底部上および前記側壁上に窒化ケイ素膜を形成することと、
前記第1のプロセス条件、前記第2のプロセス条件および前記第3のプロセス条件への曝露を繰り返して、所定の厚さの窒化ケイ素膜を形成することと、
前記基板表面を、前記特徴部の前記頂部上および前記底部上の前記窒化ケイ素膜のウェットエッチング速度を選択的に減少させる10 10 /cm 3 以上のイオン濃度を有するプラズマを含む処理環境を含む、前記処理チャンバの第4のプロセス領域へ移動させることと
を含む処理方法。 - 頂部、底部および側壁を備える少なくとも1つの特徴部をその上に有する基板表面を、処理チャンバ内に配置することと、
前記少なくとも1つの特徴部の前記頂部上、前記底部上および前記側壁上に窒化ケイ素膜を形成するために、ケイ素前駆体及び窒素含有反応物への順次的に曝すことを含む少なくとも1つの堆積サイクルを含む堆積環境に、前記基板表面を曝すことと、
前記頂部および前記底部の上の前記膜が前記側壁上の前記膜よりも10倍より高いウェットエッチング速度を有するように、10 10 /cm 3 以上のイオン濃度を有するプラズマを含む処理環境に前記窒化ケイ素膜を曝して、前記少なくとも1つの特徴の前記頂部及び前記底部に堆積された前記窒化ケイ素膜を改質することと、
を含む処理方法。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201662307537P | 2016-03-13 | 2016-03-13 | |
| US62/307,537 | 2016-03-13 | ||
| PCT/US2017/021852 WO2017160647A1 (en) | 2016-03-13 | 2017-03-10 | Selective deposition of silicon nitride films for spacer applications |
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| Publication Number | Publication Date |
|---|---|
| JP2019511118A JP2019511118A (ja) | 2019-04-18 |
| JP6946320B2 true JP6946320B2 (ja) | 2021-10-06 |
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| JP2018548122A Active JP6946320B2 (ja) | 2016-03-13 | 2017-03-10 | スペーサ用の窒化ケイ素膜の選択的堆積 |
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| Country | Link |
|---|---|
| US (1) | US10319583B2 (ja) |
| JP (1) | JP6946320B2 (ja) |
| KR (1) | KR102293218B1 (ja) |
| CN (1) | CN108780735B (ja) |
| TW (1) | TWI722132B (ja) |
| WO (1) | WO2017160647A1 (ja) |
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|---|---|---|---|---|
| US10378106B2 (en) | 2008-11-14 | 2019-08-13 | Asm Ip Holding B.V. | Method of forming insulation film by modified PEALD |
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- 2017-03-10 TW TW106107925A patent/TWI722132B/zh active
- 2017-03-10 KR KR1020187029608A patent/KR102293218B1/ko active Active
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| US20170263437A1 (en) | 2017-09-14 |
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| WO2017160647A1 (en) | 2017-09-21 |
| KR20180116456A (ko) | 2018-10-24 |
| TW201800598A (zh) | 2018-01-01 |
| US10319583B2 (en) | 2019-06-11 |
| CN108780735A (zh) | 2018-11-09 |
| KR102293218B1 (ko) | 2021-08-23 |
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