JP6958980B6 - 水素プラズマを用いたシリコン抽出方法 - Google Patents
水素プラズマを用いたシリコン抽出方法 Download PDFInfo
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- 229910052710 silicon Inorganic materials 0.000 title description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title description 14
- 239000010703 silicon Substances 0.000 title description 14
- 239000001257 hydrogen Substances 0.000 title description 7
- 229910052739 hydrogen Inorganic materials 0.000 title description 7
- 238000000605 extraction Methods 0.000 title description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title description 5
- 238000000034 method Methods 0.000 claims description 103
- 239000000758 substrate Substances 0.000 claims description 55
- 238000005530 etching Methods 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 36
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 24
- 125000006850 spacer group Chemical group 0.000 claims description 16
- 230000005284 excitation Effects 0.000 claims description 11
- 239000007789 gas Substances 0.000 description 37
- 229910052581 Si3N4 Inorganic materials 0.000 description 29
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 27
- 238000001020 plasma etching Methods 0.000 description 11
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000012546 transfer Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical compound [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 description 3
- 238000001636 atomic emission spectroscopy Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000004626 scanning electron microscopy Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- -1 hydrogen ions Chemical class 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 241000282537 Mandrillus sphinx Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H01L21/02274—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition in the presence of a plasma [PECVD]
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- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/033—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers
- H01L21/0334—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane
- H01L21/0337—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane characterised by the process involved to create the mask, e.g. lift-off masks, sidewalls, or to modify the mask, e.g. pre-treatment, post-treatment
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/02164—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material being a silicon oxide, e.g. SiO2
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/0217—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material being a silicon nitride not containing oxygen, e.g. SixNy or SixByNz
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
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- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
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- H01L21/32135—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only
- H01L21/32136—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only using plasmas
- H01L21/32137—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only using plasmas of silicon-containing layers
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Drying Of Semiconductors (AREA)
- Plasma Technology (AREA)
Description
本出願は、2016年5月29日に出願された米国仮特許出願第62/342,992号に関連し、これに基づく優先権を主張する。
その全体の内容は参照により本明細書に組み込まれる。
一実施形態において、第2材料は、SiN、SiO2及びそれらの組み合わせからなる群から選択される、
さらに、「SiO2」の表記は、主成分としてケイ素及び酸素を含有する層を含むことを意味し、その層はある範囲のSi及びOの組成物を有することができる。SiO2は酸化ケイ素の中で最も熱力学的に安定であり、従って酸化ケイ素の中で最も商業的に重要である。
substrate)が、依然として原子状水素が支配的なエッチャント種である。本発明の実施形態によれば、プロセス条件は13.56MHzにおいて75〜250Wの下部電極電力を含むことができる。
マルチオリフィスシャワーヘッドガス注入プレート(図示せず)を介して供給される。
Claims (4)
- 基板プロセス方法であって、
基板を提供するステップであって、前記基板は、該基板上に隆起フィーチャを形成する第1材料と、前記隆起フィーチャの垂直部分上の側壁スペーサを形成する第2材料と、を含み、前記第1材料及び前記第2材料は、下地の第3材料と直接接触し、
前記側壁スペーサ同士の間において、前記第1材料のさらなる層が形成されており、前記隆起フィーチャ及び前記第1材料のさらなる層のうちの少なくとも1つの頂部表面において、第3材料のさらなる層が形成されており、前記側壁スペーサの高さは、前記頂部表面を越えており、
前記第1材料は元素Siからなり、前記第2材料はSiNからなり、前記第3材料はSiO2 からなる、ステップと、
H2及び任意でArを含むプラズマ励起プロセスガスを形成するステップと、
前記第3材料の前記さらなる層の下の前記第1材料は残して、前記第3材料の前記さらなる層が上に形成されていない第1材料をエッチングするために、前記プラズマ励起プロセスガスに前記基板を曝露するステップと、
を含む、方法。 - 前記プラズマ励起プロセスガスを形成するステップは、上部プレート電極と前記基板を支持する下部プレート電極とを含む容量結合プラズマ源を用いてプラズマを生成するステップを含む、
請求項1記載の方法。 - 前記プロセスガスがH2を含む、
請求項1記載の方法。 - 前記プロセスガスがH2及びArを含む、
請求項1記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662342992P | 2016-05-29 | 2016-05-29 | |
US62/342,992 | 2016-05-29 | ||
PCT/US2017/034852 WO2017210139A1 (en) | 2016-05-29 | 2017-05-26 | Method of silicon extraction using a hydrogen plasma |
Publications (3)
Publication Number | Publication Date |
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JP2019522906A JP2019522906A (ja) | 2019-08-15 |
JP6958980B2 JP6958980B2 (ja) | 2021-11-02 |
JP6958980B6 true JP6958980B6 (ja) | 2021-12-22 |
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JP2019514200A Active JP6958980B6 (ja) | 2016-05-29 | 2017-05-26 | 水素プラズマを用いたシリコン抽出方法 |
Country Status (5)
Country | Link |
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US (1) | US20170345667A1 (ja) |
JP (1) | JP6958980B6 (ja) |
KR (1) | KR102360404B1 (ja) |
TW (1) | TWI687995B (ja) |
WO (1) | WO2017210139A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20190038945A (ko) | 2016-08-29 | 2019-04-09 | 도쿄엘렉트론가부시키가이샤 | 실리콘 질화물의 준원자 층 에칭 방법 |
WO2018156975A1 (en) | 2017-02-23 | 2018-08-30 | Tokyo Electron Limited | Method of quasi-atomic layer etching of silicon nitride |
KR102537742B1 (ko) | 2017-02-23 | 2023-05-26 | 도쿄엘렉트론가부시키가이샤 | 자가 정렬 블록 구조물들의 제조를 위한 실리콘 질화물 맨드렐의 이방성 추출 방법 |
US10607852B2 (en) * | 2017-09-13 | 2020-03-31 | Tokyo Electron Limited | Selective nitride etching method for self-aligned multiple patterning |
WO2020161139A2 (en) * | 2019-02-06 | 2020-08-13 | Evatec Ag | Method of producing ions and apparatus |
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KR100607409B1 (ko) * | 2004-08-23 | 2006-08-02 | 삼성전자주식회사 | 기판 식각 방법 및 이를 이용한 반도체 장치 제조 방법 |
US8808563B2 (en) * | 2011-10-07 | 2014-08-19 | Applied Materials, Inc. | Selective etch of silicon by way of metastable hydrogen termination |
JP5842750B2 (ja) * | 2012-06-29 | 2016-01-13 | 東京エレクトロン株式会社 | 成膜方法、成膜装置及び記憶媒体 |
US8969212B2 (en) * | 2012-11-20 | 2015-03-03 | Applied Materials, Inc. | Dry-etch selectivity |
US9190290B2 (en) * | 2014-03-31 | 2015-11-17 | Applied Materials, Inc. | Halogen-free gas-phase silicon etch |
US9773649B2 (en) * | 2014-11-17 | 2017-09-26 | Lam Research Corporation | Dry development and image transfer of si-containing self-assembled block copolymers |
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2017
- 2017-05-26 JP JP2019514200A patent/JP6958980B6/ja active Active
- 2017-05-26 US US15/607,359 patent/US20170345667A1/en not_active Abandoned
- 2017-05-26 WO PCT/US2017/034852 patent/WO2017210139A1/en active Application Filing
- 2017-05-26 KR KR1020187037056A patent/KR102360404B1/ko active IP Right Grant
- 2017-05-31 TW TW106117826A patent/TWI687995B/zh active
Also Published As
Publication number | Publication date |
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WO2017210139A1 (en) | 2017-12-07 |
JP2019522906A (ja) | 2019-08-15 |
JP6958980B2 (ja) | 2021-11-02 |
KR20190003795A (ko) | 2019-01-09 |
TWI687995B (zh) | 2020-03-11 |
US20170345667A1 (en) | 2017-11-30 |
TW201806029A (zh) | 2018-02-16 |
KR102360404B1 (ko) | 2022-02-08 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |