JP2020504460A - セリア粒子を表面から除去するための組成物及び方法 - Google Patents
セリア粒子を表面から除去するための組成物及び方法 Download PDFInfo
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Abstract
【選択図】なし
Description
本出願は、その開示全体が出典明示により本明細書に援用される、2017年1月18日に出願された米国特許仮出願第62/447729号の利益を主張するものである。
洗浄効果={(洗浄前の物体の数−洗浄後の物体の数)/洗浄前の物体の数}×100
注目すべきことに、洗浄効果の測定法は、単なる例として記載されており、それに限定されるものではない。あるいは、洗浄効果は、粒子状物質によって覆われた全表面の割合と考えてもよい。例えば、z平面走査を実施するようAFMをプログラムして一定の高さの閾値を上回る対象のトポグラフィー領域を特定し、次いで、対象の前記領域によって覆われた全表面の領域を計算してもよい。洗浄後に対象の前記領域によって覆われた面積が小さいほど、除去組成物がより効果的であることを当業者なら容易に理解するであろう。好ましくは、本明細書に記載の組成物を使用して、粒子/汚染物質の少なくとも75%がマイクロ電子デバイスから除去され、より好ましくは粒子/汚染物質の少なくとも90%、さらにより好ましくは少なくとも95%、最も好ましくは少なくとも99%が除去される。
以下に示す除去組成物を調製し(各配合物中の残部はDI水であった。)、水で100:1に希釈した。プロセスは、TEOS基板をセリア含有スラリーに5分間浸漬し、基板をDI水中で30秒間すすぎ、基板を除去組成物に60秒間浸漬し、次いで、第2のDI水リンスで30秒間すすぐものであった。浸漬中の温度は室温であった。洗浄の程度を、走査型電子顕微鏡法(SEM)、誘導結合プラズマ質量分析法(ICP−MS)及び暗視野顕微鏡法(DFM)を使用して決定し、比較例の配合物1と比較した。
配合物A:2wt%クエン酸、2wt%プロピレングリコールフェニルエーテル、残部の水。調整及び1:100希釈後のpH=2.5
配合物B:2wt%クエン酸、2wt%亜硫酸ナトリウム、残部の水。調整及び1:100希釈後のpH=2.6
配合物C:2wt%クエン酸、2wt%プロピレングリコールフェニルエーテル、2wt%亜硫酸ナトリウム、残部の水。調整及び1:100希釈後のpH=2.6
比較例の配合物1:NH4OH:H2O2:H2O=1:1:5
以下に示す除去組成物を調製し(各配合物中の残部はDI水であった。)、水で100:1に希釈した。プロセスは、TEOS基板をセリア含有スラリーに5分間浸漬し、基板をDI水中で30秒間すすぎ、基板を除去組成物に60秒間浸漬し、次いで、第2のDI水リンスで30秒間すすぐものであった。浸漬中の温度は室温であった。洗浄の程度を、走査型電子顕微鏡法(SEM)、誘導結合プラズマ質量分析法(ICP−MS)及び暗視野顕微鏡法(DFM)を使用して決定した。特に、表2は、各除去組成物のDMFデータを示す。
Claims (20)
- 少なくとも1つのpH調整剤と、少なくとも1つの還元剤と、少なくとも1つの有機添加剤と、水とを含む水性除去組成物であって、セリア粒子と化学機械研磨(CMP)汚染物質とを、前記粒子とCMP汚染物質とをその上に有するマイクロ電子デバイスから除去するのに適している水性除去組成物。
- セリア粒子が、式Ce2O3及びCeO2を有する酸化セリウムである、請求項1に記載の水性除去組成物。
- 少なくとも1つのpH調整剤が、アルカリ金属水酸化物、水酸化アンモニウム、水酸化コリン又は水酸化テトラアルキルアンモニウムである、請求項1に記載の水性除去組成物。
- 少なくとも1つのpH調整剤が、硫酸、クエン酸又はそれらの組合せである、請求項1に記載の水性除去組成物。
- 少なくとも1つの有機添加剤がグリコールエーテルを含む、請求項1に記載の水性除去組成物。
- 少なくとも1つの有機添加剤がプロピレングリコールフェニルエーテルである、請求項1に記載の水性除去組成物。
- 少なくとも1つの還元剤が、少なくとも1つの亜硫酸イオンを含む、請求項1に記載の水性除去組成物。
- 亜硫酸、亜硫酸カリウム、亜硫酸アンモニウム、ホスフィン酸又はそれらの組合せをさらに含む、請求項7に記載の水性除去組成物。
- 少なくとも1つの酸素捕捉剤をさらに含む、請求項1に記載の水性除去組成物。
- 少なくとも1つの酸素捕捉剤が、カルボヒドラジド、2−アミノエチルピペラジン(AEP)、メチルエチルケトキシム、ヒドロキノン、ヒドラジン又は1,3−、1,4−若しくは2,5−シクロヘキサンジオンである、請求項9に記載の水性除去組成物。
- 少なくとも1つの錯化剤をさらに含む、請求項1に記載の水性除去組成物。
- 少なくとも1つの錯化剤がアルカノールアミンである、請求項11に記載の水性除去組成物。
- 少なくとも1つのポリマーをさらに含む、請求項1に記載の水性除去組成物。
- 少なくとも1つのポリマーが、ポリ(メタクリル酸)又はポリ(アクリル酸)である、請求項13に記載の水性除去組成物。
- マイクロ電子デバイスが、窒化シリコン層と低誘電率層とを含む、請求項1に記載の水性除去組成物。
- セリア粒子とCMP汚染物質とを、前記粒子と汚染物質とをその上に有するマイクロ電子デバイスから除去する方法であって、
マイクロ電子デバイスを、少なくとも1つのpH調整剤と、少なくとも1つの還元剤と、少なくとも1つの有機添加剤と、水とを含む水性除去組成物と接触させることと、
窒化シリコン層と低誘電率層とを含むマイクロ電子デバイスから、前記粒子と汚染物質とを少なくとも部分的に洗浄することと
を含む方法。 - 水性除去組成物が、少なくとも1つの酸素捕捉剤、少なくとも1つの錯化剤又は少なくとも1つのポリマーをさらに含む、請求項16に記載の方法。
- 水性除去組成物が、窒化シリコン層又は低誘電率層を実質的に損傷しない、請求項16に記載の方法。
- 使用ポイントで、又は使用ポイント前に、水を含む溶媒で水性除去組成物を希釈することをさらに含む、請求項16に記載の方法。
- セリア粒子と化学機械研磨(CMP)汚染物質とを、前記粒子とCMP汚染物質とをその上に有するマイクロ電子デバイスから除去するのに適した成分をその中に有する一又は複数の容器を含むキットであって、キットの一又は複数の容器は、少なくとも1つのpH調整剤と、少なくとも1つの還元剤と、少なくとも1つの有機添加剤と、水とを含むキット。
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| WO2023282287A1 (ja) * | 2021-07-08 | 2023-01-12 | 株式会社日本触媒 | Cmp工程用後洗浄剤組成物 |
| JP2023009993A (ja) * | 2021-07-08 | 2023-01-20 | 株式会社日本触媒 | Cmp工程用後洗浄剤組成物 |
| JP2024540584A (ja) * | 2021-11-23 | 2024-10-31 | インテグリス・インコーポレーテッド | マイクロエレクトロニクスデバイス洗浄組成物 |
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| US11124741B2 (en) | 2019-02-08 | 2021-09-21 | Entegris, Inc. | Ceria removal compositions |
| CN113424301A (zh) | 2019-02-19 | 2021-09-21 | 三菱化学株式会社 | 铈化合物去除用清洗液、清洗方法和半导体晶片的制造方法 |
| WO2021111914A1 (ja) * | 2019-12-03 | 2021-06-10 | 三菱ケミカル株式会社 | セリウム化合物除去用洗浄液、洗浄方法及び半導体ウェハの製造方法 |
| KR102677822B1 (ko) * | 2020-09-25 | 2024-06-25 | 가부시키가이샤 후지미인코퍼레이티드 | 산화제를 함유하는 세정제를 사용한 효율적인 cmp-후 결함 저감 |
| CN112625808B (zh) * | 2020-12-29 | 2022-08-16 | 万津实业(赤壁)有限公司 | 酸性清洗剂及其制备方法与应用 |
| JP2024517606A (ja) * | 2021-04-16 | 2024-04-23 | インテグリス・インコーポレーテッド | 洗浄組成物 |
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| CN115397572A (zh) * | 2020-03-19 | 2022-11-25 | 富士胶片电子材料美国有限公司 | 清洁组合物及其使用方法 |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP7443300B2 (ja) | 2024-03-05 |
| US20180204736A1 (en) | 2018-07-19 |
| TWI710629B (zh) | 2020-11-21 |
| CN119286600A (zh) | 2025-01-10 |
| JP2021192429A (ja) | 2021-12-16 |
| KR20210090294A (ko) | 2021-07-19 |
| US11164738B2 (en) | 2021-11-02 |
| KR20240074891A (ko) | 2024-05-28 |
| TW201831666A (zh) | 2018-09-01 |
| CN110234719A (zh) | 2019-09-13 |
| WO2018136511A1 (en) | 2018-07-26 |
| KR20190094426A (ko) | 2019-08-13 |
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