JP7659984B2 - コバルトメタライゼーションのためのシステムおよび方法 - Google Patents
コバルトメタライゼーションのためのシステムおよび方法 Download PDFInfo
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- JP7659984B2 JP7659984B2 JP2020208894A JP2020208894A JP7659984B2 JP 7659984 B2 JP7659984 B2 JP 7659984B2 JP 2020208894 A JP2020208894 A JP 2020208894A JP 2020208894 A JP2020208894 A JP 2020208894A JP 7659984 B2 JP7659984 B2 JP 7659984B2
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Description
本出願は、2019年12月20日に出願された米国仮出願第62/951,457号に対する優先権を主張するものであり、これは参照により本明細書に援用される。
Claims (20)
- 半導体ウエハ処理装置であって、
ウエハハンドリングチャンバ、
ウエハハンドリングロボット、
第一の堆積プロセスモジュール、
冷却ステージ、および
前記ウエハハンドリングチャンバから前記第一の堆積プロセスモジュールへと三次元構造を備えるウエハを順次移動させ、前記第一の堆積プロセスモジュールにおいて、第一の堆積温度で前記ウエハ上にTiNライナー層を堆積させ、前記ウエハを前記冷却ステージに移動し、前記ウエハを前記第一の堆積温度以下に冷却し、前記ウエハを第二の堆積プロセスモジュールに戻し、第二の堆積温度で前記ウエハ上の前記TiNライナー層上にコバルトシード層を堆積させ、前記TiNライナー層の堆積後、かつ前記コバルトシード層の堆積前に、前記ウエハをハロゲン化処理に供させるように設定された制御部、を含む、半導体ウエハ処理装置。 - 前記制御部が、前記コバルトシード層を堆積させ、前記ウエハを前記第二の堆積温度以下に冷却した後、前記第二の堆積プロセスモジュールから前記冷却ステージへと前記ウエハを移動させるよう設定される、請求項1に記載の装置。
- 前記コバルトシード層がナノラミネートを含む、請求項1に記載の装置。
- クラスタターボポンプをさらに備える、請求項1に記載の装置。
- 前記制御部が、原子層堆積によって前記第一の堆積プロセスモジュールにおいて、前記TiNライナー層を前記ウエハ上に堆積するように設定される、請求項1に記載の装置。
- 前記制御部が、原子層堆積によって前記第二の堆積プロセスモジュールにおいて、前記コバルトシード層を前記ウエハ上に堆積するように設定される、請求項5に記載の装置。
- 前記第一の堆積プロセスモジュールおよび前記第二の堆積プロセスモジュールが同一である、請求項1に記載の装置。
- コバルトメタライゼーションの方法であって、
原子層堆積によって、第一の堆積プロセスモジュールにおいて第一の堆積温度で、TiNライナー層をウエハ上の三次元構造上に堆積すること、
前記ウエハを前記第一の堆積温度以下の温度に冷却すること、
前記ウエハを第二の堆積プロセスモジュールに移動すること、
原子層堆積によって、第二の堆積プロセスモジュールにおいて第二の堆積温度で、コバルトシード層を直接かつ接触するように前記TiNライナー層上に堆積させること、および
メッキによって、前記コバルトシード層上にコバルトを堆積させることを含み、
前記TiNライナー層の堆積後、かつ前記コバルトシード層の堆積前に、前記ウエハをハロゲン化処理に供させることをさらに含む、方法。 - 前記ウエハを前記第一の堆積温度以下の温度に冷却することが、前記ウエハを冷却モジュールに移動させることを含む、請求項8に記載の方法。
- 前記ウエハを前記第一の堆積温度以下の温度に冷却することが、前記ウエハを冷却ステージ上に置くことを含む、請求項8に記載の方法。
- 前記コバルトシード層を堆積した後、かつメッキによって前記コバルトシード層上にコバルトを堆積させる前に、前記ウエハを前記第二の堆積温度以下の温度に冷却することをさらに含む、請求項8に記載の方法。
- 前記ウエハを前記第二の堆積温度以下の温度に冷却することが、前記ウエハを冷却モジュールに移動させることを含む、請求項11に記載の方法。
- 前記第一の堆積プロセスモジュールおよび前記第二の堆積プロセスモジュールが同一である、請求項8に記載の方法。
- 前記コバルトシード層が、コバルトとTiNとの混合物を含む、請求項8に記載の方法。
- 前記コバルトシード層が、前記コバルトおよびTiNの混合物の上にコバルト層をさらに含む、請求項14に記載の方法。
- 前記コバルトシード層が、TiN層およびコバルト層のナノラミネートを含む、請求項8に記載の方法。
- 前記コバルトシード層が、前記ナノラミネート上にコバルト層をさらに含む、請求項16に記載の方法。
- 前記コバルトシード層が、TiNおよびコバルトのグレーデッド層(graded layer)を含む、請求項8に記載の方法。
- 前記グレーデッド層が、前記TiNライナー層との界面から前記グレーデッド層の上面へ、コバルト濃度の上昇を含む、請求項18に記載の方法。
- 前記TiNライナー層の堆積後、かつ前記コバルトシード層の堆積前に、前記ウエハをTiCl4に曝露することをさらに含む、請求項8に記載の方法。
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