KR100870914B1 - 실리콘 산화막의 건식 식각 방법 - Google Patents
실리콘 산화막의 건식 식각 방법 Download PDFInfo
- Publication number
- KR100870914B1 KR100870914B1 KR1020080052134A KR20080052134A KR100870914B1 KR 100870914 B1 KR100870914 B1 KR 100870914B1 KR 1020080052134 A KR1020080052134 A KR 1020080052134A KR 20080052134 A KR20080052134 A KR 20080052134A KR 100870914 B1 KR100870914 B1 KR 100870914B1
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- South Korea
- Prior art keywords
- gas
- etching
- oxide film
- silicon oxide
- substrate
- Prior art date
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 229910052814 silicon oxide Inorganic materials 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 41
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 99
- 238000005530 etching Methods 0.000 claims abstract description 91
- 239000000758 substrate Substances 0.000 claims abstract description 51
- 238000001312 dry etching Methods 0.000 claims abstract description 22
- 239000006227 byproduct Substances 0.000 claims abstract description 8
- 238000011065 in-situ storage Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 135
- 239000011261 inert gas Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 150000003973 alkyl amines Chemical class 0.000 abstract description 12
- 238000000137 annealing Methods 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 1
- 239000010408 film Substances 0.000 description 63
- 230000000052 comparative effect Effects 0.000 description 11
- 239000004065 semiconductor Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 239000012159 carrier gas Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000001039 wet etching Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001709 polysilazane Polymers 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—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
- 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
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Drying Of Semiconductors (AREA)
Abstract
Description
Claims (10)
- 삭제
- 삭제
- 삭제
- 삭제
- 기판 상에 형성된 실리콘 산화막을 챔버 내에서 건식 식각하는 방법에 있어서,상기 실리콘 산화막은 열산화막과 SOD(Spin On Dielectric) 산화막을 적어도 포함하고,상기 기판 온도를 20 ℃ 내지 50 ℃로 유지하면서, HF 가스와 NH3 가스 및 이소프로필알콜(IPA)의 혼합 가스를 식각 가스로 사용하고 상기 식각 가스에 N2, Ar 및 He 중 선택되는 적어도 하나의 불활성 가스를 더 포함시켜 사용하되, 상기 HF 가스 : NH3 가스 : IPA와 불활성 가스의 유량비를 1 : 0.5~2 : 0.5~2로 설정하여 상기 열산화막과 상기 SOD 산화막의 식각 선택비가 1 : 0.82 내지 1 : 1이 되도록 상기 실리콘 산화막을 식각하는 동안 상기 기판 상에 식각 부산물을 생성하는 단계; 및상기 기판 온도를 80 ℃ 내지 200 ℃ 사이의 온도로 승온시켜 상기 기판으로부터 상기 식각 부산물을 제거하는 후열처리 단계를 포함하고,상기 식각과 상기 후열처리 단계는 인시튜(in-situ)로 진행하는 것을 특징으로 하는 실리콘 산화막 건식 식각 방법.
- 삭제
- 삭제
- 제5항에 있어서, 건식 식각시의 상기 챔버 내부 압력은 10 mTorr 내지 150 Torr인 것을 특징으로 하는 실리콘 산화막 건식 식각 방법.
- 삭제
- 삭제
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080052134A KR100870914B1 (ko) | 2008-06-03 | 2008-06-03 | 실리콘 산화막의 건식 식각 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080052134A KR100870914B1 (ko) | 2008-06-03 | 2008-06-03 | 실리콘 산화막의 건식 식각 방법 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020080083261A Division KR20090126165A (ko) | 2008-08-26 | 2008-08-26 | 실리콘 산화막의 건식 식각 방법 |
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Publication Number | Publication Date |
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KR100870914B1 true KR100870914B1 (ko) | 2008-11-28 |
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KR1020080052134A KR100870914B1 (ko) | 2008-06-03 | 2008-06-03 | 실리콘 산화막의 건식 식각 방법 |
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KR (1) | KR100870914B1 (ko) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101165970B1 (ko) | 2009-03-19 | 2012-07-18 | 도쿄엘렉트론가부시키가이샤 | 기판의 에칭 방법 및 시스템 |
GB2487716A (en) * | 2011-01-24 | 2012-08-08 | Memsstar Ltd | Vapour Etch of Silicon Dioxide with Improved Selectivity in MEMS structures |
WO2021182311A1 (ja) * | 2020-03-13 | 2021-09-16 | セントラル硝子株式会社 | ドライエッチング方法、半導体デバイスの製造方法及びドライエッチングガス組成物 |
US11715641B2 (en) * | 2018-09-13 | 2023-08-01 | Central Glass Company, Limited | Method and device for etching silicon oxide |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100416592B1 (ko) | 2001-02-10 | 2004-02-05 | 삼성전자주식회사 | 매엽식 웨이퍼 세정 장치 및 이를 이용한 웨이퍼 세정 방법 |
US6903024B2 (en) * | 2002-07-25 | 2005-06-07 | Samsung Electronics Co., Ltd. | Method of manufacturing storage nodes of a semiconductor memory device using a two-step etching process |
KR20060002805A (ko) * | 2003-04-22 | 2006-01-09 | 도쿄 엘렉트론 가부시키가이샤 | 실리콘 산화막의 제거 방법 및 처리 장치 |
JP2007180418A (ja) | 2005-12-28 | 2007-07-12 | Tokyo Electron Ltd | エッチング方法及び記録媒体 |
-
2008
- 2008-06-03 KR KR1020080052134A patent/KR100870914B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100416592B1 (ko) | 2001-02-10 | 2004-02-05 | 삼성전자주식회사 | 매엽식 웨이퍼 세정 장치 및 이를 이용한 웨이퍼 세정 방법 |
US6903024B2 (en) * | 2002-07-25 | 2005-06-07 | Samsung Electronics Co., Ltd. | Method of manufacturing storage nodes of a semiconductor memory device using a two-step etching process |
KR20060002805A (ko) * | 2003-04-22 | 2006-01-09 | 도쿄 엘렉트론 가부시키가이샤 | 실리콘 산화막의 제거 방법 및 처리 장치 |
JP2007180418A (ja) | 2005-12-28 | 2007-07-12 | Tokyo Electron Ltd | エッチング方法及び記録媒体 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101165970B1 (ko) | 2009-03-19 | 2012-07-18 | 도쿄엘렉트론가부시키가이샤 | 기판의 에칭 방법 및 시스템 |
GB2487716A (en) * | 2011-01-24 | 2012-08-08 | Memsstar Ltd | Vapour Etch of Silicon Dioxide with Improved Selectivity in MEMS structures |
GB2487716B (en) * | 2011-01-24 | 2015-06-03 | Memsstar Ltd | Vapour Etch of Silicon Dioxide with Improved Selectivity |
US10354884B2 (en) | 2011-01-24 | 2019-07-16 | Memsstar Limited | Vapour etch of silicon dioxide with improved selectivity |
US11715641B2 (en) * | 2018-09-13 | 2023-08-01 | Central Glass Company, Limited | Method and device for etching silicon oxide |
US20230274944A1 (en) * | 2018-09-13 | 2023-08-31 | Central Glass Company, Limited | Method and device for etching silicon oxide |
JP7352809B2 (ja) | 2018-09-13 | 2023-09-29 | セントラル硝子株式会社 | シリコン酸化物のエッチング方法及びエッチング装置 |
WO2021182311A1 (ja) * | 2020-03-13 | 2021-09-16 | セントラル硝子株式会社 | ドライエッチング方法、半導体デバイスの製造方法及びドライエッチングガス組成物 |
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