JP7446456B2 - プラズマ処理方法 - Google Patents
プラズマ処理方法 Download PDFInfo
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- JP7446456B2 JP7446456B2 JP2022552366A JP2022552366A JP7446456B2 JP 7446456 B2 JP7446456 B2 JP 7446456B2 JP 2022552366 A JP2022552366 A JP 2022552366A JP 2022552366 A JP2022552366 A JP 2022552366A JP 7446456 B2 JP7446456 B2 JP 7446456B2
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- 238000000034 method Methods 0.000 title claims description 11
- 238000009832 plasma treatment Methods 0.000 title claims 4
- 238000005530 etching Methods 0.000 claims description 51
- 229910000577 Silicon-germanium Inorganic materials 0.000 claims description 44
- 229910003902 SiCl 4 Inorganic materials 0.000 claims description 34
- 238000003672 processing method Methods 0.000 claims description 13
- 229910003910 SiCl4 Inorganic materials 0.000 claims description 8
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 claims description 8
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 claims description 8
- 229910015844 BCl3 Inorganic materials 0.000 claims description 4
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(IV) oxide Inorganic materials O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000001020 plasma etching Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 55
- 150000002500 ions Chemical class 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 229910000449 hafnium oxide Inorganic materials 0.000 description 7
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 7
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 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 4
- 239000005049 silicon tetrachloride Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000006557 surface reaction Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910003978 SiClx Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- OQNXPQOQCWVVHP-UHFFFAOYSA-N [Si].O=[Ge] Chemical compound [Si].O=[Ge] OQNXPQOQCWVVHP-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002070 nanowire Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- -1 that is Inorganic materials 0.000 description 1
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- 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
- H01L21/31122—Etching inorganic layers by chemical means by dry-etching of layers not containing Si, e.g. PZT, Al2O3
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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
- H01L21/02172—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 at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides
- H01L21/02175—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 at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal
- H01L21/02181—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 at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal the material containing hafnium, e.g. HfO2
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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
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
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- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/823412—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the channel structures, e.g. channel implants, halo or pocket implants, or channel materials
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- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/823462—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the gate insulating layers, e.g. different gate insulating layer thicknesses, particular gate insulator materials or particular gate insulator implants
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
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- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42384—Gate electrodes for field effect devices for field-effect transistors with insulated gate for thin film field effect transistors, e.g. characterised by the thickness or the shape of the insulator or the dimensions, the shape or the lay-out of the conductor
- H01L29/42392—Gate electrodes for field effect devices for field-effect transistors with insulated gate for thin film field effect transistors, e.g. characterised by the thickness or the shape of the insulator or the dimensions, the shape or the lay-out of the conductor fully surrounding the channel, e.g. gate-all-around
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
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- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/51—Insulating materials associated therewith
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- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Drying Of Semiconductors (AREA)
- Junction Field-Effect Transistors (AREA)
Description
三塩化ホウ素BCl3ガスに四塩化ケイ素SiCl4ガスを添加し、この時の四塩化ケイ素SiCl4ガスの流量割合が三塩化ホウ素BCl3ガスの流量割合より低く、酸化ハフニウムHfO2よりもシリコンゲルマニウムSiGe上に堆積するSiClxデポジションが多くなる流量割合とすることで、酸化ハフニウムHfO2をシリコンゲルマニウムSiGeに対して選択的にエッチングすることにより達成される。
図1は、本発明の第1の実施形態に係る真空処理装置の概略全体構成断面図である。図2は、本発明の第1の実施形態に係る遮蔽板を示す平面図である。
Claims (5)
- Gate All Around構造のゲート絶縁膜であるHfO 2 をSiGeに対して選択的にプラズマエッチングするプラズマ処理方法において、
BCl 3 ガスとSiCl 4 ガスの混合ガスを用いて前記HfO 2 をエッチングし、
前記SiCl 4 ガスの流量は、前記BCl 3 ガスの流量より少なく、
前記混合ガスの流量に対する前記SiCl4ガスの流量の比は、前記SiGe上に堆積する堆積膜の厚さが前記HfO2上に堆積する堆積膜の厚さより厚くなる値であることを特徴とするプラズマ処理方法。 - Gate All Around構造のゲート絶縁膜であるHfO 2 をSiGeに対して選択的にプラズマエッチングするプラズマ処理方法において、
BCl 3 ガスとSiCl 4 ガスの混合ガスを用いて前記HfO 2 をエッチングし、
前記SiCl 4 ガスの流量は、前記BCl 3 ガスの流量より少なく、
前記SiGeが積層された方向の垂直方向に前記HfO 2 をエッチングし、
前記混合ガスの流量に対する前記SiCl4ガスの流量の比は、前記SiGe上に堆積する堆積膜の厚さが前記HfO2上に堆積する堆積膜の厚さより厚くなる値であ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、
前記混合ガスの流量に対する前記SiCl4ガスの流量の比は、3~20%の範囲内の値であることを特徴とするプラズマ処理方法。 - SiGeに対して選択的にHfO2をプラズマエッチングするプラズマ処理方法において、
BCl3ガスとSiCl4ガスの混合ガスを用いて前記HfO2をエッチングし、
前記SiCl4ガスの流量は、前記BCl3ガスの流量より少なく、
前記混合ガスの流量に対する前記SiCl 4 ガスの流量の比は、前記SiGe上に堆積する堆積膜の厚さが前記HfO 2 上に堆積する堆積膜の厚さより厚くなる値であることを特徴とするプラズマ処理方法。 - 請求項4に記載のプラズマ処理方法において、
前記混合ガスの流量に対する前記SiCl 4 ガスの流量の比は、3~20%の範囲内の値であることを特徴とするプラズマ処理方法。
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PCT/JP2021/039032 WO2023067786A1 (ja) | 2021-10-22 | 2021-10-22 | プラズマ処理方法 |
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JPWO2023067786A1 JPWO2023067786A1 (ja) | 2023-04-27 |
JP7446456B2 true JP7446456B2 (ja) | 2024-03-08 |
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JP2022552366A Active JP7446456B2 (ja) | 2021-10-22 | 2021-10-22 | プラズマ処理方法 |
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JP (1) | JP7446456B2 (ja) |
KR (1) | KR20230058309A (ja) |
CN (1) | CN116391247A (ja) |
TW (1) | TW202318504A (ja) |
WO (1) | WO2023067786A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008060171A (ja) | 2006-08-29 | 2008-03-13 | Taiyo Nippon Sanso Corp | 半導体処理装置のクリーニング方法 |
JP2009016611A (ja) | 2007-07-05 | 2009-01-22 | Hitachi High-Technologies Corp | プラズマエッチング処理方法 |
WO2012070551A1 (ja) | 2010-11-22 | 2012-05-31 | 株式会社アルバック | メモリ素子の製造装置及び製造方法 |
JP2015057854A (ja) | 2014-11-27 | 2015-03-26 | 株式会社日立ハイテクノロジーズ | プラズマ処理方法 |
US20180175035A1 (en) | 2016-12-16 | 2018-06-21 | Samsung Electronics Co., Ltd. | Semiconductor devices and method of manufacutring the same |
Family Cites Families (2)
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JP2006339523A (ja) | 2005-06-03 | 2006-12-14 | Taiyo Nippon Sanso Corp | 半導体処理装置のクリーニング方法および高誘電率酸化膜のエッチング方法 |
JP2009021584A (ja) | 2007-06-27 | 2009-01-29 | Applied Materials Inc | 高k材料ゲート構造の高温エッチング方法 |
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2021
- 2021-10-22 WO PCT/JP2021/039032 patent/WO2023067786A1/ja active Application Filing
- 2021-10-22 JP JP2022552366A patent/JP7446456B2/ja active Active
- 2021-10-22 KR KR1020227023721A patent/KR20230058309A/ko not_active Application Discontinuation
- 2021-10-22 CN CN202180009904.9A patent/CN116391247A/zh active Pending
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2022
- 2022-07-28 TW TW111128294A patent/TW202318504A/zh unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008060171A (ja) | 2006-08-29 | 2008-03-13 | Taiyo Nippon Sanso Corp | 半導体処理装置のクリーニング方法 |
JP2009016611A (ja) | 2007-07-05 | 2009-01-22 | Hitachi High-Technologies Corp | プラズマエッチング処理方法 |
WO2012070551A1 (ja) | 2010-11-22 | 2012-05-31 | 株式会社アルバック | メモリ素子の製造装置及び製造方法 |
JP2015057854A (ja) | 2014-11-27 | 2015-03-26 | 株式会社日立ハイテクノロジーズ | プラズマ処理方法 |
US20180175035A1 (en) | 2016-12-16 | 2018-06-21 | Samsung Electronics Co., Ltd. | Semiconductor devices and method of manufacutring the same |
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CN116391247A (zh) | 2023-07-04 |
KR20230058309A (ko) | 2023-05-03 |
WO2023067786A1 (ja) | 2023-04-27 |
TW202318504A (zh) | 2023-05-01 |
JPWO2023067786A1 (ja) | 2023-04-27 |
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