JP7113651B2 - 逆行的なプロファイルを有する凹状フィーチャのボイドのない充填方法 - Google Patents
逆行的なプロファイルを有する凹状フィーチャのボイドのない充填方法 Download PDFInfo
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Description
この出願は、2017年4月11日に出願された米国仮特許出願番号第62/484,343号に関するものであり、この優先権を主張し、その全内容は、参照によって本願明細書に組み込まれる。
本発明は、基板を処理するための方法に関するものであり、特には、半導体デバイス内に見られる微細な凹状フィーチャのボイドのない材料充填のための方法に関するものである。
AlL1L2L3Dx
を有し、L1、L2、L3は、個々のアニオン性配位子であり、Dは、中性のドナー配位子であり、xは、0、1又は2とすることができる。L1、L2、L3配位子の各々は、アルコキシド、ハロゲン化物、アリールオキシド、アミド、シクロペンタジエニル、アルキル、シリル、アミジナート、β-ジケトナート、ケトイミナート、シラノエート及びカルボン酸塩の群から個々に選択されてもよい。D配位子は、エーテル、フラン、ピリジン、ピロール、ピロリジン、アミン、クラウンエーテル、グライム及びニトリルの群から選択されてもよい。
Claims (18)
- 基板処理方法であって、
開口、側壁及び底を有する凹状フィーチャを含むパターン化された基板を提供するステップであって、前記側壁は、前記凹状フィーチャの頂部から前記凹状フィーチャの前記底まで延在する方向に対して逆行的なプロファイルのエリアを含む、提供ステップと、
前記基板を金属含有触媒層でコーティングするステップであって、前記基板をAlMe3ガスに露出するステップを含む、コーティングステップと、
前記凹状フィーチャの前記開口に近い前記金属含有触媒層の一部を、ハロゲン含有ガスへの露出によって非活性化するステップであって、前記ハロゲン含有ガスは、Cl 2 、BCl 3 、CCl 4 、TiCl 4 又はそれらの組み合わせを含む、非活性化ステップ
と、
前記ハロゲン含有ガスによって非活性化されなかった、前記凹状フィーチャ内の前記金属含有触媒層上に材料を選択的に堆積する、選択的堆積ステップと、
を含む方法。 - 前記コーティングステップ、前記非活性化ステップ及び前記選択的堆積ステップを少なくとも1回繰り返し、追加の量の前記材料をボイドなしで前記凹状フィーチャ内に堆積するステップをさらに含む、
請求項1に記載の方法。 - 前記繰り返しは、前記材料が前記凹状フィーチャを完全に充填されるまで実行される、
請求項2に記載の方法。 - 前記材料は、SiO2を含む、
請求項1に記載の方法。 - 前記SiO2は、任意の酸化及び加水分解剤なしで、かつ、プラズマなしで、前記基板を、約150℃の以下の基板温度で、シラノールガスを含むプロセスガスに露出することによって堆積される、
請求項4に記載の方法。 - 前記プロセスガスは、シラノールガス及び不活性ガスからなる、
請求項5に記載の方法。 - 前記シラノールガスは、トリス(tert-ペントキシ)シラノール、トリス(tert-ブトキシ)シラノール及びビス(tert-ブトキシ)(イソプロポキシ)シラノールからなる群から選択される、
請求項5に記載の方法。 - 基板処理方法であって、
開口、側壁及び底を有する凹状フィーチャを含むパターン化された基板を提供するステップであって、前記側壁は、前記凹状フィーチャの頂部から前記凹状フィーチャの前記底まで延在する方向に対して逆行的なプロファイルのエリアを含む、提供ステップと、
前記基板をアルミニウム含有触媒層でコーティングする、コーティングステップと、
前記凹状フィーチャの前記開口に近い前記アルミニウム含有触媒層の一部を、Cl2を含むハロゲン含有ガスへの露出によって非活性化する、非活性化ステップと、
前記ハロゲン含有ガスによって非活性化されなかった、前記凹状フィーチャ内の前記アルミニウム含有触媒層上に、ある量のSiO2材料を選択的に堆積する、選択的堆積ステップと、
を含む方法。 - 前記コーティングステップ、前記非活性化ステップ及び前記選択的堆積ステップを少なくとも1回繰り返し、追加の量の前記SiO2材料をボイドなしで前記凹状フィーチャ内に堆積するステップをさらに含む、
請求項8に記載の方法。 - 前記繰り返しは、前記SiO2材料が前記凹状フィーチャを完全に充填するまで実行される、
請求項9に記載の方法。 - 前記SiO2材料は、任意の酸化及び加水分解剤なしで、かつ、プラズマなしで、前記基板を、約150℃以下の基板温度で、シラノールガスを含むプロセスガスに露出することによって堆積される、
請求項8に記載の方法。 - 前記プロセスガスは、シラノールガス及び不活性ガスからなる、
請求項11に記載の方法。 - 前記シラノールガスは、トリス(tert-ペントキシ)シラノール、トリス(tert-ブトキシ)シラノール及びビス(tert-ブトキシ)(イソプロポキシ)シラノールからなる群から選択される、
請求項11に記載の方法。 - 基板処理方法であって、
開口、側壁及び底を有する凹状フィーチャを含むパターン化された基板を提供するステップであって、前記側壁は、前記凹状フィーチャの頂部から前記凹状フィーチャの前記底まで延在する方向に対して逆行的なプロファイルのエリアを含む、提供ステップと、
前記基板をAlMe3含有触媒層でコーティングする、コーティングステップと、
前記凹状フィーチャの前記開口に近い前記AlMe3含有触媒層の一部を、ハロゲン含有ガスへの露出によって非活性化するステップであって、前記ハロゲン含有ガスは、Cl 2 、BCl 3 、CCl 4 、TiCl 4 又はそれらの組み合わせを含む、非活性化ステップと、
前記ハロゲン含有ガスによって非活性化されなかった、前記凹状フィーチャ内の前記AlMe3含有触媒層上に、ある量のSiO2材料を選択的に堆積する、選択的堆積ステップと、
前記コーティングステップ、前記非活性化ステップ及び前記選択的堆積ステップを少なくとも1回繰り返し、前記SiO2材料が前記凹状フィーチャを完全に充填するまで、追加の量の前記SiO2材料を堆積する、堆積ステップと、
を含む方法。 - 前記SiO2材料は、任意の酸化及び加水分解剤なしで、かつ、プラズマなしで、前記基板を、約150℃以下の基板温度で、シラノールガスを含むプロセスガスに露出することによって堆積され、前記シラノールガスは、トリス(tert-ペントキシ)シラノール、トリス(tert-ブトキシ)シラノール及びビス(tert-ブトキシ)(イソプロポキシ)シラノールからなる群から選択される、
請求項14に記載の方法。 - 前記コーティングステップは、前記基板をAlMe3ガスに露出するステップを含む、
請求項8記載の方法。 - 前記SiO2材料は、任意の酸化及び加水分解剤なしで、かつ、プラズマなしで、前記基板を、約150℃以下の基板温度で、シラノールガスを含むプロセスガスに露出することによって堆積される、
請求項14記載の方法。 - 前記ハロゲン含有ガスはCl2を含む、
請求項14記載の方法。
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| KR20090095391A (ko) * | 2008-03-05 | 2009-09-09 | 주식회사 하이닉스반도체 | 반도체 소자의 컨택 플러그 형성방법 |
| US9349637B2 (en) * | 2014-08-21 | 2016-05-24 | Lam Research Corporation | Method for void-free cobalt gap fill |
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- 2018-04-11 US US15/950,611 patent/US10453737B2/en active Active
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| JP2010245448A (ja) | 2009-04-09 | 2010-10-28 | Tokyo Electron Ltd | 成膜装置、成膜方法及び記憶媒体 |
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| KR20180114853A (ko) | 2018-10-19 |
| US10453737B2 (en) | 2019-10-22 |
| JP2018182325A (ja) | 2018-11-15 |
| US20180294181A1 (en) | 2018-10-11 |
| KR102545882B1 (ko) | 2023-06-20 |
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