JP2020031112A - エッチング方法及びプラズマ処理装置 - Google Patents
エッチング方法及びプラズマ処理装置 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000005530 etching Methods 0.000 title claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 113
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 33
- 238000009826 distribution Methods 0.000 claims abstract description 28
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 20
- 239000010703 silicon Substances 0.000 claims abstract description 20
- 150000002500 ions Chemical class 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 4
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 3
- 229910052707 ruthenium Inorganic materials 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 229910052756 noble gas Inorganic materials 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 134
- 239000004020 conductor Substances 0.000 description 58
- 230000005684 electric field Effects 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 4
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
Description
Claims (8)
- プラズマ処理装置を用いて実行されるエッチング方法であって、該エッチング方法は、該プラズマ処理装置のチャンバ内に基板が配置された状態で実行され、
前記基板上にフルオロカーボンを含む堆積物を形成するために、前記チャンバ内でフルオロカーボンガスを含む処理ガスのプラズマを生成する工程であり、前記基板は、シリコン含有材料から形成された第1領域及び金属含有材料から形成された第2領域を有する、該工程と、
前記基板に希ガスイオンを供給することにより前記基板上に形成された前記堆積物中のフルオロカーボンと前記第1領域の前記シリコン含有材料とを反応させて前記第1領域をエッチングするために、前記チャンバ内で希ガスのプラズマを生成する工程と、
を含み、
希ガスのプラズマを生成する工程では、電磁石により、前記基板の中心の上での水平成分よりも大きい水平成分を前記基板のエッジ側の上で有する磁場の分布が形成される、
エッチング方法。 - 前記シリコン含有材料は、SiO2、SiOC、又はSiOCHである、請求項1に記載のエッチング方法。
- 前記金属含有材料は、チタン、タングステン、ジルコニウム、アルミニウム、タンタル、コバルト、若しくはルテニウムのうち何れかの金属材料、又は該金属材料の酸化物、窒化物、若しくは炭化物である、請求項1又は2に記載のエッチング方法。
- 前記フルオロカーボンガスは、C4F8ガス及び/又はC4F6ガスを含む、請求項1〜3の何れか一項に記載のエッチング方法。
- 処理ガスのプラズマを生成する前記工程と希ガスのプラズマを生成する前記工程とが交互に繰り返される、請求項1〜4の何れか一項に記載のエッチング方法。
- チャンバと、
下部電極を有し、前記チャンバ内に設けられた基板支持台と、
前記チャンバ内にフルオロカーボンガスを含む処理ガス及び希ガスを供給するように構成されたガス供給部と、
前記チャンバ内のガスを励起させるために高周波電力を発生するように構成された高周波電源と、
前記チャンバの内部空間の中に磁場を形成するよう構成された電磁石と、
前記電磁石に電流を供給するように構成された駆動電源と、
前記ガス供給部、前記高周波電源、及び前記駆動電源を制御するように構成された制御部と、
を備え、
前記制御部は、
前記処理ガスから形成されるプラズマからのフルオロカーボンの堆積物を前記基板支持台上に載置された基板上に形成するために、前記チャンバ内に前記処理ガスを供給するよう前記ガス供給部を制御し、前記高周波電力を供給するよう前記高周波電源を制御する第1の制御を実行し、
その上に前記堆積物が形成された前記基板に希ガスイオンを供給するために、前記チャンバ内に前記希ガスを供給するよう前記ガス供給部を制御し、前記高周波電力を供給するよう前記高周波電源を制御し、前記電磁石により、前記基板の中心の上での水平成分よりも大きい水平成分を前記基板のエッジ側の上で有する磁場の分布を形成するよう前記駆動電源を制御する第2の制御を実行し、
よう構成されている、プラズマ処理装置。 - 前記フルオロカーボンガスは、C4F8ガス及び/又はC4F6ガスを含む、請求項6に記載のプラズマ処理装置。
- 前記制御部は、前記第1の制御と前記第2の制御を交互に繰り返して実行するように構成されている、請求項6又は7に記載のプラズマ処理装置。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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JP2018154914A JP7198609B2 (ja) | 2018-08-21 | 2018-08-21 | エッチング方法及びプラズマ処理装置 |
US16/979,257 US12014930B2 (en) | 2018-08-21 | 2019-08-07 | Etching method and plasma processing apparatus |
PCT/JP2019/031227 WO2020039943A1 (ja) | 2018-08-21 | 2019-08-07 | エッチング方法及びプラズマ処理装置 |
KR1020207025975A KR20210035074A (ko) | 2018-08-21 | 2019-08-07 | 에칭 방법 및 플라즈마 처리 장치 |
CN201980017819.XA CN111819666A (zh) | 2018-08-21 | 2019-08-07 | 蚀刻方法和等离子体处理装置 |
TW108129424A TWI846723B (zh) | 2018-08-21 | 2019-08-19 | 蝕刻方法及電漿處理裝置 |
US18/659,116 US20240290625A1 (en) | 2018-08-21 | 2024-05-09 | Plasma processing apparatus |
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Citations (9)
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JP4167542B2 (ja) * | 2002-07-17 | 2008-10-15 | 積水化学工業株式会社 | プラズマエッチング用ガス供給装置並びにプラズマエッチングシステム及び方法 |
US9147581B2 (en) | 2013-07-11 | 2015-09-29 | Lam Research Corporation | Dual chamber plasma etcher with ion accelerator |
JP6396699B2 (ja) * | 2014-02-24 | 2018-09-26 | 東京エレクトロン株式会社 | エッチング方法 |
JP2016136606A (ja) | 2015-01-16 | 2016-07-28 | 東京エレクトロン株式会社 | エッチング方法 |
JP6836976B2 (ja) * | 2017-09-26 | 2021-03-03 | 東京エレクトロン株式会社 | プラズマ処理装置 |
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JPH05267237A (ja) * | 1992-03-23 | 1993-10-15 | Nippon Telegr & Teleph Corp <Ntt> | プラズマ・ダメージ低減法およびプラズマ処理装置 |
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CN111819666A (zh) | 2020-10-23 |
JP7198609B2 (ja) | 2023-01-04 |
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US20210366718A1 (en) | 2021-11-25 |
US20240290625A1 (en) | 2024-08-29 |
KR20210035074A (ko) | 2021-03-31 |
US12014930B2 (en) | 2024-06-18 |
TWI846723B (zh) | 2024-07-01 |
WO2020039943A1 (ja) | 2020-02-27 |
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