JP2013535577A - 高アスペクト比の特徴要素に金属を堆積する方法 - Google Patents
高アスペクト比の特徴要素に金属を堆積する方法 Download PDFInfo
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Abstract
【選択図】 図1
Description
以上に簡潔の要約され以下に詳細に説明される本発明の実施形態は、添付図面に示す本発明の例示的な実施形態を参照することで理解できる。しかしながら、添付図面は、本発明の典型的な実施形態を示すだけあり、本発明は他の同様に有効な実施形態を許容できるので、発明の範囲の限定することを意図していないことに留意されたい。
Claims (15)
- 物理蒸着(PVD)チャンバ内の基板を処理する方法であって、前記基板が前記基板の第1の表面に形成され前記基板の反対側の第2の表面に向かって前記基板内に延びる開口を有し、前記開口が、少なくとも約5:1の高さ対幅のアスペクト比を有し、前記方法が:
前記基板の上方に配置された金属を含有するターゲットにVHF周波数で第1のRF電力を印加してプラズマ形成ガスからプラズマを生成させる段階と;
前記ターゲットにDC電力を印加して前記プラズマを前記ターゲットに向かわせる段階と;
前記ターゲットからスパッタされた前記金属原子の主要部分をイオン化させるのに十分なPVDチャンバ内の第1の圧力を維持しながら、前記プラズマを用いて前記ターゲットから金属原子をスパッタリングさせる段階と;
前記開口の底面上と前記基板の前記第1の表面上とに複数の第1の金属原子を堆積させる段階と;
前記基板の下方に配置された第1の電極に第2のRF電力を印加し、前記複数の第1の金属原子の少なくとも一部を前記底面から前記開口の側壁の下側部分へ再分配する段階と;
前記PVDチャンバ内のイオン化金属原子の量を低減することによって、前記側壁の上側部分に複数の第2の金属原子を堆積させる段階と、
を含み、複数の前記第1及び第2の金属原子が、前記開口の実質的に全体の表面上に堆積した第1の層を形成することを特徴とする方法。 - 前記複数の第1の金属原子を堆積させる段階が:
前記第1の電極に最大約50ワットの大きさの第3のRF電力を印加して、前記複数の第1の金属原子を前記開口の前記底面に向かわせる段階を更に含む、請求項1に記載の方法。 - 前記第3のRF電力の大きさが、前記第2のRF電力の大きさよりも小さい、請求項2に記載の方法。
- 前記第1の電極に前記第2のRF電力を印加し、前記複数の第1の金属原子の少なくとも一部を再分配させる段階が:
前記DC電力の大きさを維持して、前記複数の第1の金属原子の少なくとも一部を前記下側部分に再分配しながら、前記プラズマを用いて前記ターゲットからの金属原子のスパッタリングを継続させる段階と;
前記DC電力の大きさを制限又はDC電力をオフにして、前記複数の第1の金属原子の少なくとも一部を前記下側部分に再分配しながら、前記プラズマを用いて前記ターゲットからの金属原子のスパッタリングを阻止する段階と、
のいずれかを更に含む、請求項1に記載の方法。 - 前記第1の電極に前記第2のRF電力を印加し、前記複数の第1の金属原子の少なくとも一部を再分配する段階が:
前記第1のRF電力又は前記第1の圧力のうちの少なくとも1つを維持して、前記複数の第1の金属原子の少なくとも一部を前記開口の前記側壁の前記下側部分に再分配しながら、前記基板の前記第1の表面及び前記開口の前記底面上の前記複数の第1の金属原子の堆積を継続させる段階と;
前記第1の圧力を第2の圧力に低下させる段階と、
のいずれかを更に含む、請求項1に記載の方法。 - 前記第1の電極に前記第2のRF電力を印加し、前記複数の第1の金属原子の少なくとも一部を再分配する段階が、前記第1の圧力を第2の圧力に低下させる段階を更に備え、前記複数の第2の金属原子を前記側壁の前記上側部分に堆積させる段階が、前記第2の圧力を第3の圧力に低下させて、前記PVDチャンバ内のイオン化金属原子の量を低減させる段階を更に含む、請求項1に記載の方法。
- 前記開口の前記側壁の前記上側部分に前記複数の第2の金属原子を堆積させる段階が:
前記第1のRF電力の大きさを第1の大きさから第2の大きさに低下させて前記PVDチャンバ内のイオン化金属原子の量を低減させる段階;
前記DC電力の大きさを第1の大きさから第2の大きさに低下させて前記PVDチャンバ内のイオン化金属原子の量を低減させる段階;又は、
前記第2のRF電力の大きさを約50ワット未満にまで低下させる段階のうちの少なくとも1つを更に含む、請求項1に記載の方法。 - 前記基板をエッチングして前記基板の前記開口を形成する段階と;
前記基板の前記上面、及び前記開口の前記側壁及び前記底面に沿って酸化物層を形成する段階と;
金属原子を堆積させる段階の前に前記酸化物層の上に障壁層を形成する段階と、
を更に含む、請求項1から7のいずれかに記載の方法。 - 前記第1の層の上に電気メッキプロセスによって材料を堆積させ前記開口を充填する段階を更に含む、請求項8に記載の方法。
- 前記堆積材料と前記金属とが同じ材料である、請求項9に記載の方法。
- 前記基板が第1の基板であって:
前記第1の基板の第2の表面に隣接して配置される第2の基板を提供する段階を更に備え、前記開口が前記第1の基板を貫通して前記第2の基板の上面が前記開口の前記底面を形成する、請求項9に記載の方法。 - 前記開口の前記底面を除去して前記第1の層又は前記堆積材料のうちの少なくとも1つを露出させる段階を更に含む、請求項9に記載の方法。
- 前記開口の前記底面を除去する段階が:
化学機械研磨によって前記基板の前記第2の表面を少なくとも部分的に除去して前記開口の前記底面を除去する段階を更に含む、請求項12に記載の方法。 - 前記基板の前記第2の表面を少なくとも部分的に除去する段階に続いて、前記基板の前記第2の表面を第2の基板の上面に結合する段階を更に含む、請求項13に記載の方法。
- 前記基板の第2の表面を結合する段階が:
前記開口を、前記第2の基板の前記上面に配置された対応するデバイスと位置合わせする段階を更に含む、請求項14に記載の方法。
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US36924010P | 2010-07-30 | 2010-07-30 | |
| US61/369,240 | 2010-07-30 | ||
| US13/178,870 | 2011-07-08 | ||
| US13/178,870 US8846451B2 (en) | 2010-07-30 | 2011-07-08 | Methods for depositing metal in high aspect ratio features |
| PCT/US2011/044781 WO2012015656A2 (en) | 2010-07-30 | 2011-07-21 | Methods for depositing metal in high aspect ratio features |
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| Publication Number | Publication Date |
|---|---|
| JP2013535577A true JP2013535577A (ja) | 2013-09-12 |
| JP5889894B2 JP5889894B2 (ja) | 2016-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2013521832A Active JP5889894B2 (ja) | 2010-07-30 | 2011-07-21 | 高アスペクト比の特徴要素に金属を堆積する方法 |
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| US (1) | US8846451B2 (ja) |
| JP (1) | JP5889894B2 (ja) |
| KR (2) | KR20130093612A (ja) |
| CN (1) | CN103026462B (ja) |
| TW (1) | TWI517299B (ja) |
| WO (1) | WO2012015656A2 (ja) |
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| KR20180061386A (ko) * | 2015-10-22 | 2018-06-07 | 어플라이드 머티어리얼스, 인코포레이티드 | 낮은 비저항의 텅스텐 막의 물리 기상 증착을 위한 시스템들 및 방법들 |
| JP2023552291A (ja) * | 2020-11-18 | 2023-12-15 | インテグリス・インコーポレーテッド | 耐クラック性フルオロアニールド膜でコーティングされた物品、および作製方法 |
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| JP2013538295A (ja) * | 2010-09-17 | 2013-10-10 | アプライド マテリアルズ インコーポレイテッド | 高アスペクト比特徴部に金属を堆積させる方法 |
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| JP2023552291A (ja) * | 2020-11-18 | 2023-12-15 | インテグリス・インコーポレーテッド | 耐クラック性フルオロアニールド膜でコーティングされた物品、および作製方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103026462B (zh) | 2016-05-11 |
| KR20130093612A (ko) | 2013-08-22 |
| US20120028461A1 (en) | 2012-02-02 |
| KR20160003299A (ko) | 2016-01-08 |
| US8846451B2 (en) | 2014-09-30 |
| TWI517299B (zh) | 2016-01-11 |
| WO2012015656A2 (en) | 2012-02-02 |
| JP5889894B2 (ja) | 2016-03-22 |
| TW201207996A (en) | 2012-02-16 |
| CN103026462A (zh) | 2013-04-03 |
| WO2012015656A3 (en) | 2012-04-12 |
| KR101760846B1 (ko) | 2017-07-24 |
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