JP5235596B2 - Siエッチング方法 - Google Patents
Siエッチング方法 Download PDFInfo
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- JP5235596B2 JP5235596B2 JP2008266231A JP2008266231A JP5235596B2 JP 5235596 B2 JP5235596 B2 JP 5235596B2 JP 2008266231 A JP2008266231 A JP 2008266231A JP 2008266231 A JP2008266231 A JP 2008266231A JP 5235596 B2 JP5235596 B2 JP 5235596B2
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- 238000005530 etching Methods 0.000 title claims description 122
- 238000000034 method Methods 0.000 title claims description 38
- 239000007789 gas Substances 0.000 claims description 239
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 71
- 229910052710 silicon Inorganic materials 0.000 claims description 71
- 239000010703 silicon Substances 0.000 claims description 71
- 150000002500 ions Chemical class 0.000 claims description 70
- 239000000758 substrate Substances 0.000 claims description 39
- 238000012545 processing Methods 0.000 claims description 26
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims description 13
- 239000001257 hydrogen Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 6
- 150000002222 fluorine compounds Chemical class 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 2
- 229910052756 noble gas Inorganic materials 0.000 claims 1
- 239000000460 chlorine Substances 0.000 description 61
- 229910052801 chlorine Inorganic materials 0.000 description 17
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 15
- 150000003254 radicals Chemical class 0.000 description 12
- 238000001020 plasma etching Methods 0.000 description 11
- 230000003595 spectral effect Effects 0.000 description 11
- 229910052794 bromium Inorganic materials 0.000 description 10
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 9
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 9
- 239000007795 chemical reaction product Substances 0.000 description 9
- -1 HBr Chemical compound 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000001819 mass spectrum Methods 0.000 description 7
- 238000001312 dry etching Methods 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 238000010494 dissociation reaction Methods 0.000 description 5
- 230000005593 dissociations Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- YPSXFMHXRZAGTG-UHFFFAOYSA-N 4-methoxy-2-[2-(5-methoxy-2-nitrosophenyl)ethyl]-1-nitrosobenzene Chemical compound COC1=CC=C(N=O)C(CCC=2C(=CC=C(OC)C=2)N=O)=C1 YPSXFMHXRZAGTG-UHFFFAOYSA-N 0.000 description 1
- 229910003902 SiCl 4 Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- OEYOHULQRFXULB-UHFFFAOYSA-N arsenic trichloride Chemical compound Cl[As](Cl)Cl OEYOHULQRFXULB-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000002800 charge carrier 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
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910001504 inorganic chloride Inorganic materials 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- ZSRZHCIWJJKHAU-UHFFFAOYSA-N pentachloro-$l^{5}-arsane Chemical compound Cl[As](Cl)(Cl)(Cl)Cl ZSRZHCIWJJKHAU-UHFFFAOYSA-N 0.000 description 1
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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
- H01L21/302—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
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/3065—Plasma etching; Reactive-ion etching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/3244—Gas supply means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/3244—Gas supply means
- H01J37/32449—Gas control, e.g. control of the gas flow
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/32—Processing objects by plasma generation
- H01J2237/33—Processing objects by plasma generation characterised by the type of processing
- H01J2237/334—Etching
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Drying Of Semiconductors (AREA)
Description
{実施例}
シリコンウエハ口径:300mm
エッチングマスク:SiN(150nm)
エッチングガス:Cl2ガス/HBrガス=##sccm/##sccm
圧力:20mTorr
第1高周波:13MHz、バイアスRFパワー=400W
第2高周波:100MHz、RFパワー=600W
上部及び下部電極間距離=30mm
温度:上部電極/チャンバ側壁/下部電極=80/60/60℃
実験例1
実験例2
実験例3
12 サセプタ(下部電極)
28 排気装置
32 第1高周波電源
34 第1整合器
36 給電棒
38 シャワーヘッド(上部電極)
62 処理ガス供給部
68 制御部
70 第2高周波電源
72 第2整合器
Claims (8)
- 真空可能な処理容器内に第1の電極と第2の電極とを平行に設け、前記第1の電極にシリコン基板を載置して、前記処理容器内にエッチングガスを供給し、前記エッチングガスを放電させてプラズマを生成するためのプラズマ生成用高周波と前記プラズマからイオンを前記シリコン基板に引き込むためのイオン引き込み用高周波とを前記第1の電極に重畳して印加し、SiNからなるエッチングマスクを用いて前記プラズマの下で前記シリコン基板をエッチングして、前記シリコン基板の主面に円柱状または直方体状の立体型素子本体を形成するSiエッチング方法であって、
前記エッチングガスにBr2ガスとCl2ガスとを含み水素成分を含まない混合ガスを用い、前記立体型素子本体の側壁が垂直形状になるように、前記Br 2 ガスと前記Cl 2 ガスの混合比を選定するSiエッチング方法。 - 前記Br 2 ガスと前記Cl 2 ガスの混合比は約1:1である、請求項1に記載のSiエッチング方法。
- 真空可能な処理容器内に第1の電極と第2の電極とを平行に設け、前記第1の電極にシリコン基板を載置して、前記処理容器内にエッチングガスを供給し、前記エッチングガスを放電させてプラズマを生成するためのプラズマ生成用高周波と前記プラズマからイオンを前記シリコン基板に引き込むためのイオン引き込み用高周波とを前記第1の電極に重畳して印加し、SiNからなるエッチングマスクを用いて前記プラズマの下で前記シリコン基板をエッチングして、前記シリコン基板の主面に円柱状または直方体状の立体型素子本体を形成するSiエッチング方法であって、
前記エッチングガスにBr2ガスとCl2ガスよりも質量の大きい塩化物ガスとを含み水素成分を含まない混合ガスを用い、前記立体型素子本体の側壁が垂直形状になるように、前記Br 2 ガスと前記塩化物ガスの混合比を選定するSiエッチング方法。 - 前記Br 2 ガスと前記塩化物ガスの混合比は約1:1である、請求項3に記載のSiエッチング方法。
- 前記塩化物ガスは、BCl3ガス、PCl3ガス、AsCl3ガスのいずれかである、請求項3または請求項4に記載のSiエッチング方法。
- 前記エッチングガスが希ガスを含む、請求項1〜5のいずれか一項に記載のSiエッチング方法。
- 前記エッチングガスがフッ素化合物ガスを含む、請求項1〜6のいずれか一項に記載のSiエッチング方法。
- 前記フッ素化合物ガスがCF4ガス、SF6ガスまたはNF6ガスのいずれかである、請求項7に記載のSiエッチング方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008266231A JP5235596B2 (ja) | 2008-10-15 | 2008-10-15 | Siエッチング方法 |
US12/576,536 US8440572B2 (en) | 2008-10-15 | 2009-10-09 | Si etching method |
Applications Claiming Priority (1)
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JP2008266231A JP5235596B2 (ja) | 2008-10-15 | 2008-10-15 | Siエッチング方法 |
Publications (2)
Publication Number | Publication Date |
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JP2010098040A JP2010098040A (ja) | 2010-04-30 |
JP5235596B2 true JP5235596B2 (ja) | 2013-07-10 |
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JP2008266231A Expired - Fee Related JP5235596B2 (ja) | 2008-10-15 | 2008-10-15 | Siエッチング方法 |
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US (1) | US8440572B2 (ja) |
JP (1) | JP5235596B2 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8071481B2 (en) | 2009-04-23 | 2011-12-06 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method for forming highly strained source/drain trenches |
US8748989B2 (en) * | 2012-02-28 | 2014-06-10 | Taiwan Semiconductor Manufacturing Company, Ltd. | Fin field effect transistors |
JP2014187231A (ja) * | 2013-03-25 | 2014-10-02 | Tokyo Electron Ltd | プラズマエッチング方法及びプラズマエッチング装置 |
JP6153755B2 (ja) * | 2013-04-03 | 2017-06-28 | 東京エレクトロン株式会社 | プラズマ処理方法及びプラズマ処理装置 |
WO2021090798A1 (ja) * | 2019-11-08 | 2021-05-14 | 東京エレクトロン株式会社 | エッチング方法 |
US11456180B2 (en) * | 2019-11-08 | 2022-09-27 | Tokyo Electron Limited | Etching method |
CN112786441A (zh) * | 2019-11-08 | 2021-05-11 | 东京毅力科创株式会社 | 蚀刻方法及等离子体处理装置 |
SG10202010798QA (en) | 2019-11-08 | 2021-06-29 | Tokyo Electron Ltd | Etching method and plasma processing apparatus |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
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US4450042A (en) * | 1982-07-06 | 1984-05-22 | Texas Instruments Incorporated | Plasma etch chemistry for anisotropic etching of silicon |
JPH03241829A (ja) * | 1990-02-20 | 1991-10-29 | Fujitsu Ltd | 半導体装置の製造方法 |
JPH0621000A (ja) * | 1991-04-23 | 1994-01-28 | Sony Corp | 低温エッチング装置 |
JP3122175B2 (ja) | 1991-08-05 | 2001-01-09 | 忠弘 大見 | プラズマ処理装置 |
JPH07109825B2 (ja) * | 1992-01-13 | 1995-11-22 | 富士通株式会社 | 半導体基板表面もしくは薄膜表面のドライ洗浄法 |
JP3703332B2 (ja) | 1998-07-22 | 2005-10-05 | キヤノン株式会社 | プラズマ処理装置及びプラズマ処理方法 |
US6583065B1 (en) * | 1999-08-03 | 2003-06-24 | Applied Materials Inc. | Sidewall polymer forming gas additives for etching processes |
US6527968B1 (en) * | 2000-03-27 | 2003-03-04 | Applied Materials Inc. | Two-stage self-cleaning silicon etch process |
JP4016595B2 (ja) * | 2000-12-12 | 2007-12-05 | サンケン電気株式会社 | 半導体装置及びその製造方法 |
KR100702723B1 (ko) | 2001-06-22 | 2007-04-03 | 동경 엘렉트론 주식회사 | 드라이 에칭 방법 |
JP4516713B2 (ja) * | 2002-01-21 | 2010-08-04 | 東京エレクトロン株式会社 | エッチング方法 |
US6780787B2 (en) * | 2002-03-21 | 2004-08-24 | Lam Research Corporation | Low contamination components for semiconductor processing apparatus and methods for making components |
US7473377B2 (en) * | 2002-06-27 | 2009-01-06 | Tokyo Electron Limited | Plasma processing method |
JP2006310651A (ja) * | 2005-04-28 | 2006-11-09 | Toshiba Corp | 半導体装置の製造方法 |
JP2008060429A (ja) * | 2006-08-31 | 2008-03-13 | Toshiba Corp | 基板のプラズマ処理装置及びプラズマ処理方法 |
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2008
- 2008-10-15 JP JP2008266231A patent/JP5235596B2/ja not_active Expired - Fee Related
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2009
- 2009-10-09 US US12/576,536 patent/US8440572B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JP2010098040A (ja) | 2010-04-30 |
US8440572B2 (en) | 2013-05-14 |
US20100093178A1 (en) | 2010-04-15 |
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