JP6035606B2 - プラズマ処理方法およびプラズマ処理装置 - Google Patents
プラズマ処理方法およびプラズマ処理装置 Download PDFInfo
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- 238000012545 processing Methods 0.000 title claims description 38
- 238000003672 processing method Methods 0.000 title claims description 27
- 238000005530 etching Methods 0.000 claims description 101
- 230000003247 decreasing effect Effects 0.000 claims description 16
- 230000001965 increasing effect Effects 0.000 claims description 15
- 238000009832 plasma treatment Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 46
- 238000000034 method Methods 0.000 description 18
- 238000001020 plasma etching Methods 0.000 description 16
- 238000010494 dissociation reaction Methods 0.000 description 13
- 230000005593 dissociations Effects 0.000 description 13
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 12
- 230000007423 decrease Effects 0.000 description 11
- 229910052710 silicon Inorganic materials 0.000 description 11
- 239000010703 silicon Substances 0.000 description 11
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 9
- 229920005591 polysilicon Polymers 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- -1 Ar gas Chemical class 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005459 micromachining Methods 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 150000002835 noble gases Chemical class 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- H01J37/32082—Radio frequency generated discharge
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- H01J37/32146—Amplitude modulation, includes pulsing
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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
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- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
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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
- H01L21/31—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
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- 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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- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67063—Apparatus for fluid treatment for etching
- H01L21/67069—Apparatus for fluid treatment for etching for drying etching
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy
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- H—ELECTRICITY
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- 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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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66787—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel
- H01L29/66795—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Electromagnetism (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Drying Of Semiconductors (AREA)
- Plasma Technology (AREA)
Description
102 ウエハ
103 試料台
104 マイクロ波透過窓
105 導波管
106 マグネトロン
107 ソレノイドコイル
108 静電吸着電源
109 第二の高周波電源
110 ウエハ搬入口
111 ガス導入口
112 プラズマ
113 第一の高周波電源
114 電力制御部
201 マイコン
202 時間変換部
203 第一のパルス発生器
204 第二のパルス発生器
205 マスタークロック
206 パルス波形
207 第一のオンオフ信号発生器
208 第二のオンオフ信号発生器
401 窒素含有シリコン膜
402 ポリシリコン膜
403 酸化膜
404 シリコン基板
601 シリコン溝
602 酸化膜
603 エッチ残り
Claims (10)
- 試料がプラズマ処理されるプラズマ処理室と、プラズマ生成用の第一の高周波電力を供給する第一の高周波電源と、前記試料が載置される試料台に第二の高周波電力を供給する第二の高周波電源とを備えるプラズマ処理装置を用いたプラズマ処理方法において、
第一のパルスにより前記第一の高周波電力を変調し、
第二のパルスにより前記第二の高周波電力を変調し、
前記第一のパルスのデューティー比をプラズマ処理時間の経過とともに漸次的に減少させ、
前記第二のパルスのデューティー比を前記プラズマ処理時間の経過とともに漸次的に増加させることを特徴とするプラズマ処理方法。 - 試料がプラズマ処理されるプラズマ処理室と、プラズマ生成用の第一の高周波電力を供給する第一の高周波電源と、前記試料が載置される試料台に第二の高周波電力を供給する第二の高周波電源とを備えるプラズマ処理装置を用いたプラズマ処理方法において、
第一のパルスにより前記第一の高周波電力を変調し、
第二のパルスにより前記第二の高周波電力を変調し、
前記第一のパルスのデューティー比をプラズマ処理時間の経過とともに漸次的に増加させ、
前記第二のパルスのデューティー比を前記プラズマ処理時間の経過とともに漸次的に減少させることを特徴とするプラズマ処理方法。 - 請求項1または請求項2に記載のプラズマ処理方法において、
前記デューティー比は、前記試料のエッチング形状に基づいて規定されることを特徴とするプラズマ処理方法。 - 請求項1または請求項2に記載のプラズマ処理方法において、
前記第一のパルスのオン期間における第一の高周波電力をプラズマが安定的に生成されるような電力とすることを特徴とするプラズマ処理方法。 - 請求項1または請求項2に記載のプラズマ処理方法において、
前記第二のパルスは、前記第一のパルスのオン期間中にオンとなることを特徴とするプラズマ処理方法。 - 請求項1に記載のプラズマ処理方法において、
前記第一のパルスのオン期間を維持しながらオフ期間を変えることにより前記第一のパルスのデューティー比を減少させることを特徴とするプラズマ処理方法。 - 請求項2に記載のプラズマ処理方法において、
前記第一のパルスのオン期間を維持しながらオフ期間を変えることにより前記第一のパルスのデューティー比を増加させることを特徴とするプラズマ処理方法。 - 請求項1に記載のプラズマ処理方法において、
前記第一のパルスのオフ期間を維持しながらオン期間を変えることにより前記第一のパルスのデューティー比を減少させることを特徴とするプラズマ処理方法。 - 請求項2に記載のプラズマ処理方法において、
前記第一のパルスのオフ期間を維持しながらオン期間を変えることにより前記第一のパルスのデューティー比を増加させることを特徴とするプラズマ処理方法。 - 請求項1または請求項2に記載のプラズマ処理方法において、
前記プラズマは、CHF 3 ガスとCOガスとH 2 ガスとの混合ガス、CHF 3 ガスとCO 2 ガスとH 2 ガスとの混合ガス、C 2 F 6 ガスとCOガスとH 2 ガスとの混合ガス、またはC 2 F 6 ガスとCO 2 ガスとH 2 ガスとの混合ガスを用いて生成されることを特徴とするプラズマ処理方法。
Priority Applications (6)
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JP2013080901A JP6035606B2 (ja) | 2013-04-09 | 2013-04-09 | プラズマ処理方法およびプラズマ処理装置 |
TW102121544A TWI501289B (zh) | 2013-04-09 | 2013-06-18 | A plasma processing method and a plasma processing apparatus |
CN201310330382.XA CN104103486B (zh) | 2013-04-09 | 2013-08-01 | 等离子体处理方法以及等离子体处理装置 |
KR20130093845A KR101485384B1 (ko) | 2013-04-09 | 2013-08-07 | 플라즈마 처리 방법 및 플라즈마 처리 장치 |
US13/960,831 US8969211B2 (en) | 2013-04-09 | 2013-08-07 | Method and apparatus for plasma processing |
US14/603,187 US10121640B2 (en) | 2013-04-09 | 2015-01-22 | Method and apparatus for plasma processing |
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JP (1) | JP6035606B2 (ja) |
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TWI593015B (zh) * | 2014-07-10 | 2017-07-21 | 東京威力科創股份有限公司 | 基板之高精度蝕刻方法 |
JP6316735B2 (ja) | 2014-12-04 | 2018-04-25 | 東京エレクトロン株式会社 | プラズマエッチング方法 |
JP6491888B2 (ja) * | 2015-01-19 | 2019-03-27 | 株式会社日立ハイテクノロジーズ | プラズマ処理方法およびプラズマ処理装置 |
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JP6670692B2 (ja) * | 2015-09-29 | 2020-03-25 | 株式会社日立ハイテク | プラズマ処理装置およびプラズマ処理方法 |
US20170330764A1 (en) * | 2016-05-12 | 2017-11-16 | Lam Research Corporation | Methods and apparatuses for controlling transitions between continuous wave and pulsing plasmas |
JP2017212361A (ja) * | 2016-05-26 | 2017-11-30 | 東京エレクトロン株式会社 | プラズマ処理装置及びパーティクル付着抑制方法 |
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