JP6423643B2 - 多層膜をエッチングする方法 - Google Patents
多層膜をエッチングする方法 Download PDFInfo
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- JP6423643B2 JP6423643B2 JP2014162811A JP2014162811A JP6423643B2 JP 6423643 B2 JP6423643 B2 JP 6423643B2 JP 2014162811 A JP2014162811 A JP 2014162811A JP 2014162811 A JP2014162811 A JP 2014162811A JP 6423643 B2 JP6423643 B2 JP 6423643B2
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- 238000000034 method Methods 0.000 title claims description 47
- 238000005530 etching Methods 0.000 title claims description 32
- 239000007789 gas Substances 0.000 claims description 232
- 238000012545 processing Methods 0.000 claims description 111
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 20
- 239000004215 Carbon black (E152) Substances 0.000 claims description 18
- 229930195733 hydrocarbon Natural products 0.000 claims description 18
- 150000002430 hydrocarbons Chemical class 0.000 claims description 18
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 claims description 12
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 239000011737 fluorine Substances 0.000 claims description 8
- 229910052731 fluorine Inorganic materials 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229910000042 hydrogen bromide Inorganic materials 0.000 claims description 6
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 5
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 4
- 229910003481 amorphous carbon Inorganic materials 0.000 claims description 3
- 229920005591 polysilicon Polymers 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 description 11
- 238000009792 diffusion process Methods 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002060 fluorescence correlation spectroscopy Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/32137—Radio frequency generated discharge controlling of the discharge by modulation of energy
- H01J37/32155—Frequency modulation
- H01J37/32165—Plural frequencies
-
- 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
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/32091—Radio frequency generated discharge the radio frequency energy being capacitively coupled to the plasma
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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
- H01L21/31—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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- 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
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32133—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only
- 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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- H10B—ELECTRONIC MEMORY DEVICES
- H10B41/00—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates
- H10B41/20—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by three-dimensional arrangements, e.g. with cells on different height levels
- H10B41/23—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by three-dimensional arrangements, e.g. with cells on different height levels with source and drain on different levels, e.g. with sloping channels
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B43/00—EEPROM devices comprising charge-trapping gate insulators
- H10B43/20—EEPROM devices comprising charge-trapping gate insulators characterised by three-dimensional arrangements, e.g. with cells on different height levels
- H10B43/23—EEPROM devices comprising charge-trapping gate insulators characterised by three-dimensional arrangements, e.g. with cells on different height levels with source and drain on different levels, e.g. with sloping channels
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Drying Of Semiconductors (AREA)
Description
・第1の処理ガス
H2ガスの流量:50〜300sccm
HBrガスの流量:5〜50sccm
NF3ガスの流量:50〜100sccm
CH4ガスの流量:5〜50sccm
CH2F2ガスの流量:40〜80sccm
C4F8ガスの流量:5〜20sccm
・第2の処理ガス
CH4ガスの流量:5〜50sccm
C4F8ガスの流量:5〜20sccm
・第1の高周波電源62の高周波電力の周波数:27〜100MHz
・第1の高周波電源62の高周波電力:500〜2700W
・第2の高周波電源64の高周波電力の周波数:0.4〜13MHz
・第2の高周波電源64の高周波電力:1000〜4000W
・処理容器12内の圧力:2.66〜13.3Pa (20〜100mT)
・高周波電力のONとOFFの周波数:1〜40kHz
・一周期において高周波電力がONの期間が占めるデューティー比:50〜90%
・高周波電力がONの期間の負の直流電圧の絶対値:150〜500V
・高周波電力がOFFの期間の負の直流電圧の絶対値:350〜1000V
以下、方法MTを用いて行った実験例、及び比較のために行った比較実験例について説明する。
Claims (9)
- 互いに異なる誘電率を有し、且つ、交互に積層された第1の膜及び第2の膜を含む多層膜をエッチングする方法であって、前記第1の膜は酸化シリコン膜であり、前記第2の膜は窒化シリコン膜又はポリシリコン膜であり、該方法は、
プラズマ処理装置の処理容器内に、前記多層膜及び該多層膜上に設けられたマスクを有する被処理体を準備する工程と、
前記プラズマ処理装置の前記処理容器内においてプラズマを発生させて前記多層膜をエッチングする工程と、
を含み、
前記多層膜をエッチングする前記工程では、前記被処理体の中央領域に向けてガスを供給するための第1の供給部及び前記中央領域の外側の領域にガスを供給するための第2の供給部から、水素ガス、臭化水素ガス、フッ素含有ガス、炭化水素ガス、フルオロハイドロカーボンガス、及びフルオロカーボンガスを含む第1の処理ガスを供給し、前記第1の供給部及び前記第2の供給部のうち一方から、炭化水素ガス及びフルオロカーボンガスを含む第2の処理ガスを更に供給し、前記第1の処理ガス及び前記第2の処理ガスを励起させる、
方法。 - 前記第1の供給部が前記第2の処理ガスを供給する、請求項1に記載の方法。
- 前記第2の供給部が前記第2の処理ガスを供給する、請求項1に記載の方法。
- 前記フルオロカーボンガスは、C3F8ガス、C4F6ガス、又はC4F8ガスである、請求項1〜3の何れか一項に記載の方法。
- 前記フルオロハイドロカーボンガスは、CH2F2ガス、CH3Fガス、又はCHF3ガスである、請求項1〜4の何れか一項に記載の方法。
- 前記フッ素含有ガスは、NF3又はSF6である、請求項1〜5の何れか一項に記載の方法。
- 前記炭化水素ガスは、CH4である、請求項1〜6の何れか一項に記載の方法。
- 前記第1の膜と前記第2の膜は、合計24層以上積層されている、請求項1〜7の何れか一項に記載の方法。
- 前記マスクは、アモルファスカーボン製である、請求項1〜8の何れか一項に記載の方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014162811A JP6423643B2 (ja) | 2014-08-08 | 2014-08-08 | 多層膜をエッチングする方法 |
KR1020150106597A KR101847866B1 (ko) | 2014-08-08 | 2015-07-28 | 다층막을 에칭하는 방법 |
US14/817,463 US9536707B2 (en) | 2014-08-08 | 2015-08-04 | Etching method of multilayered film |
SG10201506217SA SG10201506217SA (en) | 2014-08-08 | 2015-08-06 | Etching method of multilayered film |
CN201510484856.5A CN105374674B (zh) | 2014-08-08 | 2015-08-07 | 多层膜的蚀刻方法 |
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JP2014162811A JP6423643B2 (ja) | 2014-08-08 | 2014-08-08 | 多層膜をエッチングする方法 |
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JP2016039310A JP2016039310A (ja) | 2016-03-22 |
JP6423643B2 true JP6423643B2 (ja) | 2018-11-14 |
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US (1) | US9536707B2 (ja) |
JP (1) | JP6423643B2 (ja) |
KR (1) | KR101847866B1 (ja) |
CN (1) | CN105374674B (ja) |
SG (1) | SG10201506217SA (ja) |
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JP6498022B2 (ja) * | 2015-04-22 | 2019-04-10 | 東京エレクトロン株式会社 | エッチング処理方法 |
JP6604911B2 (ja) | 2016-06-23 | 2019-11-13 | 東京エレクトロン株式会社 | エッチング処理方法 |
JP6945385B2 (ja) * | 2017-08-14 | 2021-10-06 | 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 |
US10847374B2 (en) * | 2017-10-31 | 2020-11-24 | Lam Research Corporation | Method for etching features in a stack |
JP7229033B2 (ja) * | 2019-02-01 | 2023-02-27 | 東京エレクトロン株式会社 | 基板処理方法及び基板処理装置 |
JP7228413B2 (ja) * | 2019-03-11 | 2023-02-24 | 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 |
US11456180B2 (en) | 2019-11-08 | 2022-09-27 | Tokyo Electron Limited | Etching method |
KR102401025B1 (ko) | 2019-11-08 | 2022-05-24 | 도쿄엘렉트론가부시키가이샤 | 에칭 방법 |
US11342194B2 (en) | 2019-11-25 | 2022-05-24 | Tokyo Electron Limited | Substrate processing method and substrate processing apparatus |
JP2021090039A (ja) | 2019-11-25 | 2021-06-10 | 東京エレクトロン株式会社 | 基板処理方法及びプラズマ処理装置 |
JP7403314B2 (ja) | 2019-12-26 | 2023-12-22 | 東京エレクトロン株式会社 | エッチング方法及びエッチング装置 |
TW202209474A (zh) | 2020-04-30 | 2022-03-01 | 日商東京威力科創股份有限公司 | 基板處理方法及電漿處理裝置 |
TW202213505A (zh) | 2020-08-24 | 2022-04-01 | 日商東京威力科創股份有限公司 | 蝕刻方法及電漿處理裝置 |
CN116034455A (zh) | 2021-04-08 | 2023-04-28 | 东京毅力科创株式会社 | 蚀刻方法和等离子体处理系统 |
WO2022230118A1 (ja) | 2021-04-28 | 2022-11-03 | 東京エレクトロン株式会社 | エッチング方法 |
KR20230133270A (ko) | 2021-05-06 | 2023-09-19 | 도쿄엘렉트론가부시키가이샤 | 에칭 방법 및 플라즈마 처리 시스템 |
JPWO2022234648A1 (ja) | 2021-05-07 | 2022-11-10 | ||
CN115885369A (zh) | 2021-05-07 | 2023-03-31 | 东京毅力科创株式会社 | 蚀刻方法以及蚀刻装置 |
JP7308876B2 (ja) | 2021-05-07 | 2023-07-14 | 東京エレクトロン株式会社 | 基板処理方法および基板処理装置 |
JP2023067406A (ja) | 2021-11-01 | 2023-05-16 | 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システム |
JP7348672B2 (ja) | 2021-12-03 | 2023-09-21 | 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システム |
JP2023141869A (ja) | 2022-03-24 | 2023-10-05 | 東京エレクトロン株式会社 | エッチング方法及びプラズマ処理システム |
JP7257088B1 (ja) | 2022-03-24 | 2023-04-13 | 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システム |
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JP4701776B2 (ja) * | 2005-03-25 | 2011-06-15 | 東京エレクトロン株式会社 | エッチング方法及びエッチング装置 |
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- 2015-08-04 US US14/817,463 patent/US9536707B2/en active Active
- 2015-08-06 SG SG10201506217SA patent/SG10201506217SA/en unknown
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CN105374674B (zh) | 2018-01-26 |
US9536707B2 (en) | 2017-01-03 |
KR101847866B1 (ko) | 2018-04-11 |
KR20160018367A (ko) | 2016-02-17 |
US20160042919A1 (en) | 2016-02-11 |
CN105374674A (zh) | 2016-03-02 |
SG10201506217SA (en) | 2016-03-30 |
JP2016039310A (ja) | 2016-03-22 |
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