JP7454773B2 - 自己律速型で有限溶解度の反応を使用した湿式原子層エッチングのための処理システム及びプラットフォーム - Google Patents
自己律速型で有限溶解度の反応を使用した湿式原子層エッチングのための処理システム及びプラットフォーム Download PDFInfo
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- JP7454773B2 JP7454773B2 JP2021526290A JP2021526290A JP7454773B2 JP 7454773 B2 JP7454773 B2 JP 7454773B2 JP 2021526290 A JP2021526290 A JP 2021526290A JP 2021526290 A JP2021526290 A JP 2021526290A JP 7454773 B2 JP7454773 B2 JP 7454773B2
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- H01L21/68785—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by the mechanical construction of the susceptor, stage or support
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Description
本出願は、2018年11月15日に出願された「Wet Atomic Layer Etching Using Self-Limiting and Solubility-Limited Reactions」と題された米国仮特許出願第62/767,808号明細書、2019年2月27日に出願された「Wet Atomic Layer Etching Using Self-Limiting and Solubility-Limited Reactions」と題された米国特許出願第16/287,658号明細書、及び2019年5月3日に出願された「Processing System and Platform for Wet Atomic Layer Etching Using Self-Limiting and Solubility-Limited Reactions」と題された米国特許出願第16/402,611号明細書の優先権を主張するものであり、これらの明細書の開示内容は、参照によりその全体が本明細書に明示的に組み込まれる。
Claims (21)
- 基板上で湿式エッチングプロセスを実施するための処理システムであって、
湿式化学プロセスを実施するように構成された湿式プロセスチャンバと、
前記湿式プロセスチャンバ内の基板ホルダーであって、第1の材料及び第2の材料を有する基板を支持するように構成された、基板ホルダーと、
第1の化学溶液及び第2の化学溶液を供給するように構成された化学物質供給システムであって、前記第2の化学溶液は、前記第1の化学溶液とは異なる、化学物質供給システムと、
前記湿式プロセスチャンバに流体的に結合された化学物質注入マニホルドであって、前記第1の化学溶液及び前記第2の化学溶液を循環的に分配するように構成された、化学物質注入マニホルドと、
前記湿式エッチングプロセスを実施して、前記第1の化学溶液及び前記第2の化学溶液の各分配サイクルの持続時間を制御することにより、前記第2の材料に対して前記第1の材料を選択的に除去するようにプログラム可能に構成されたコントローラと、
を有し、
前記コントローラは、各分配サイクルにおいて、
前記化学物質注入マニホルドを制御して、前記基板を前記第1の化学溶液に暴露し、前記第1の材料を化学的に改質し、化学的改質層を形成し、
前記化学物質注入マニホルドを制御して、前記化学的改質層を形成することは、前記化学物質注入マニホルドを制御して、前記第1の化学溶液を前記基板の表面に分配することを有し、前記第1の化学溶液は、前記基板の前記表面を化学的に改質し、前記化学的改質層を形成し;
前記化学物質注入マニホルドを制御して、前記第2の材料を除去せずに、前記化学的改質層を除去し、前記化学物質注入マニホルドを制御して前記化学的改質層を除去することは、前記化学的改質層に前記第2の化学溶液を分配することを有する;
ように構成され、
前記第1の化学溶液は、錯化剤を含み、前記第2の化学溶液は、水を含む、処理システム。 - 前記第1の化学溶液は、酸化剤を含む、請求項1に記載の処理システム。
- 前記第1の化学溶液は、酸素飽和化学溶液を含む、請求項2に記載の処理システム。
- 前記第1の化学溶液は、水、アルコール、又はアセトン中に溶解された酸素を含む、酸素飽和化学溶液を含む、請求項3に記載の処理システム。
- 前記化学物質供給システムは、さらに、錯化剤を供給するように構成される、請求項4に記載の処理システム。
- 前記錯化剤は、クエン酸塩を含む、請求項5に記載の処理システム。
- 前記化学物質供給システムは、さらに、溶媒リンス溶液を供給するように配置される、請求項1に記載の処理システム。
- 前記コントローラは、前記化学物質注入マニホルドを制御し、前記表面の化学的改質の後であって、前記化学的改質層の選択的除去の前に、前記溶媒リンス溶液を提供するようにプログラム可能に構成される、請求項7に記載の処理システム。
- 前記コントローラは、前記第1の化学溶液及び前記第2の化学溶液の前記循環的な分配を、時間的に部分的に重複させて提供するようにプログラム可能に構成される、請求項1に記載の処理システム。
- 前記コントローラは、前記第1の化学溶液及び前記第2の化学溶液の前記循環的な分配を、時間的に重複しない態様で提供するようにプログラム可能に構成される、請求項1に記載の処理システム。
- 多結晶材料を有する基板をエッチングするためのプラットフォームであって、
前記多結晶材料をエッチングするように構成された乾式エッチング機器と、
前記基板上の別の材料に対して、前記多結晶材料を選択的にエッチングするように構成された湿式エッチング機器であって、
湿式プロセスチャンバと、前記湿式プロセスチャンバ内で前記基板を支持するように構成された基板ホルダーと、化学物質供給システムと、化学物質注入マニホルドと、少なくとも前記化学物質注入マニホルドを制御して、前記別の材料に対して前記多結晶材料を選択的にエッチングするように構成されたコントローラと、を有し、
前記湿式プロセスチャンバ内の前記基板上に第1の化学溶液及び第2の化学溶液を供給するように構成され、前記第2の化学溶液は、前記第1の化学溶液とは異なっており、
前記第1の化学溶液は、前記多結晶材料を化学的に改質して、化学的改質層を生成するように構成され、
前記第2の化学溶液は、前記別の材料を除去せずに、前記化学的改質層を除去するように構成される、
湿式エッチング機器と、
前記乾式エッチング機器と前記湿式エッチング機器との間で前記基板を移動させるための移送モジュールと、
前記移送モジュールと前記湿式エッチング機器との間に配置され、前記湿式エッチング機器の湿式エッチング機器環境から前記移送モジュールの移送モジュール環境を分離する、隔離通過モジュールと、
を有する、プラットフォーム。 - 前記多結晶材料は、遷移金属である、請求項11に記載のプラットフォーム。
- 前記乾式エッチング機器は、まず前記多結晶材料を第1の表面粗さ値までエッチングするように構成され、前記湿式エッチング機器は、続いて前記多結晶材料を第2の表面粗さ値までエッチングするように構成され、第2の表面粗さ値は前記第1の表面粗さ値よりも小さい、請求項11に記載のプラットフォーム。
- 当該プラットフォームは、前記基板が前記乾式エッチング機器から前記湿式エッチング機器に移送される際に、周囲条件に暴露されずに、前記基板を制御された環境に維持するように構成される、請求項13に記載のプラットフォーム。
- 前記第1の化学溶液は、酸化剤を含む、請求項14に記載のプラットフォーム。
- 前記湿式エッチング機器は、さらに、溶媒リンス溶液を供給するように配置される、請求項15に記載のプラットフォーム。
- 前記湿式エッチング機器は、前記化学的改質層の生成後であって、前記化学的改質層の選択的除去の前に、前記溶媒リンス溶液を提供するように構成される、請求項16に記載のプラットフォーム。
- 当該プラットフォームは、前記基板が前記乾式エッチング機器から前記湿式エッチング機器に移送される際に、周囲条件に暴露されずに、前記基板を制御された環境に維持するように構成される、請求項11に記載のプラットフォーム。
- 前記第1の化学溶液は、酸化剤を含む、請求項11に記載のプラットフォーム。
- 前記化学物質注入マニホルドを制御して、前記化学的改質層を形成することは、さらに、前記化学物質注入マニホルドを制御して、前記基板の前記表面に前記錯化剤を分配させることを有する、請求項5に記載の処理システム。
- 前記第1の化学溶液は、錯化剤を含む、請求項20に記載の処理システム。
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US16/287,658 US10982335B2 (en) | 2018-11-15 | 2019-02-27 | Wet atomic layer etching using self-limiting and solubility-limited reactions |
US16/287,658 | 2019-02-27 | ||
US16/402,611 US11437250B2 (en) | 2018-11-15 | 2019-05-03 | Processing system and platform for wet atomic layer etching using self-limiting and solubility-limited reactions |
US16/402,611 | 2019-05-03 | ||
PCT/US2019/061683 WO2020102657A1 (en) | 2018-11-15 | 2019-11-15 | Processing system and platform for wet atomic layer etching using self-limiting and solubility-limited reactions |
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