JP5701736B2 - 平坦化方法および平坦化装置 - Google Patents
平坦化方法および平坦化装置 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 35
- 239000007787 solid Substances 0.000 claims description 62
- 229910052731 fluorine Inorganic materials 0.000 claims description 47
- 239000011737 fluorine Substances 0.000 claims description 47
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 44
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 43
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 40
- 239000007788 liquid Substances 0.000 claims description 37
- 150000002500 ions Chemical class 0.000 claims description 24
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 239000003929 acidic solution Substances 0.000 claims description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 10
- 229910052684 Cerium Inorganic materials 0.000 claims description 9
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 description 13
- 239000004065 semiconductor Substances 0.000 description 13
- 238000005498 polishing Methods 0.000 description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 239000000758 substrate Substances 0.000 description 9
- 238000002955 isolation Methods 0.000 description 8
- -1 fluorine ions Chemical class 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 239000006061 abrasive grain Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 150000001450 anions Chemical class 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910002601 GaN Inorganic materials 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920001709 polysilazane Polymers 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002002 slurry Substances 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
- H01L21/31—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
- H01L21/31051—Planarisation of the insulating layers
- H01L21/31053—Planarisation of the insulating layers involving a dielectric removal step
- H01L21/31055—Planarisation of the insulating layers involving a dielectric removal step the removal being a chemical etching step, e.g. dry etching
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/7624—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology
- H01L21/76264—SOI together with lateral isolation, e.g. using local oxidation of silicon, or dielectric or polycristalline material refilled trench or air gap isolation regions, e.g. completely isolated semiconductor islands
- H01L21/76275—Vertical isolation by bonding techniques
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/7624—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology
- H01L21/76264—SOI together with lateral isolation, e.g. using local oxidation of silicon, or dielectric or polycristalline material refilled trench or air gap isolation regions, e.g. completely isolated semiconductor islands
- H01L21/76283—Lateral isolation by refilling of trenches with dielectric material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/401—Multistep manufacturing processes
- H01L29/4011—Multistep manufacturing processes for data storage electrodes
- H01L29/40114—Multistep manufacturing processes for data storage electrodes the electrodes comprising a conductor-insulator-conductor-insulator-semiconductor structure
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Weting (AREA)
Description
図1乃至図5を用いて、本実施形態に係る平坦化方法について説明する。本実施形態は、酸性溶液である処理液15中において酸化珪素膜21を含む被加工物12の被加工面をフッ素(F)23が吸着した固体板11の表面に接触させることで、接触した酸化珪素膜の被加工面を化学的に溶解させ、被加工面の平坦化を行う例である。本実施形態では、機械的研磨を必要としないため、被加工面への研磨ダメージを抑制することができる。以下に、本実施形態について詳説する。
まず、図1を用いて、本実施形態に係る酸化珪素膜の平坦化を行う平坦化装置について説明する。図1は、本実施形態に係る酸化珪素膜の平坦化を行う平坦化装置の構成例を示す斜視図である。
次に、図2乃至図5を用いて、本実施形態に係る酸化珪素膜の平坦化方法および原理について説明する。図2乃至図5は、本実施形態に係る酸化珪素膜の平坦化工程および原理を示す断面図である。
すなわち、解離したフッ素イオンと珪素とが結合し、ヘキサフルオロ珪酸イオン(SiF6 2−)30として酸性溶液の処理液15中に溶解する。
上記実施形態によれば、酸性溶液の処理液15中において、被加工物12(酸化珪素膜21)の被加工面をフッ素23が吸着した固体板11の表面に接触させる。これにより、固体板11に接触した酸化珪素膜21の被加工面を化学的に溶解させ、被加工面の平坦化を行う。すなわち、酸化珪素膜21を機械的な研磨なく、化学的な反応のみで平坦化することができる。このため、機械的研磨によって生じる酸化珪素膜21の被加工面への研磨ダメージを抑制することができる。
図6乃至図9を用いて、本実施形態に係る平坦化方法の適用例について説明する。本実施形態に係る平坦化方法は、半導体装置のSTI(Shallow Trench Isolation)形成プロセスに適用され得る。
Claims (10)
- 処理液中において、酸化珪素膜を含む被加工物の被加工面と、イオン交換体を含み、かつフッ素が吸着した固体板の表面とを接触または極接近させることにより、前記被加工物の被加工面を平坦化する平坦化方法であって、
フッ素と前記固体板との結合エネルギーは、フッ素と珪素との結合エネルギーよりも小さいことを特徴とする平坦化方法。 - 前記イオン交換体は、鉄酸化物またはセリウムを含むことを特徴とする請求項1に記載の平坦化方法。
- 前記処理液が酸性溶液であることを特徴とする請求項1または請求項2に記載の平坦化方法。
- 接触または極接近した前記被加工物の被加工面と前記固体板の表面の温度を上昇させることを特徴とする請求項1乃至請求項3のいずれか1項に記載の平坦化方法。
- 前記被加工物の被加工面の平坦化前に、フッ酸溶液に浸されることにより前記固体板の表面にフッ素が吸着されることを特徴とする請求項1乃至請求項4のいずれか1項に記載の平坦化方法。
- イオン交換体を含み、かつ表面にフッ素が吸着した固体板と、
酸化珪素膜を含む被加工物を保持し、前記被加工物の被加工面と、前記固体板の表面とを処理液中で接触または極接近させることにより、前記被加工物の被加工面を平坦化する保持部と、
を具備し、
フッ素と前記固体板との結合エネルギーは、フッ素と珪素との結合エネルギーよりも小さいことを特徴とする平坦化装置。 - 前記イオン交換体は、鉄酸化物またはセリウムを含むことを特徴とする請求項6に記載の平坦化装置。
- 前記処理液が酸性溶液であることを特徴とする請求項6または請求項7に記載の平坦化装置。
- 接触または極接近した前記被加工物の被加工面と前記固体板の表面の温度を上昇させることを特徴とする請求項6乃至請求項8のいずれか1項に記載の平坦化装置。
- 前記被加工物の被加工面の平坦化前に、フッ酸溶液に浸されることにより前記固体板の表面にフッ素が吸着されることを特徴とする請求項6乃至請求項9のいずれか1項に記載の平坦化装置。
Priority Applications (2)
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JP2011278837A JP5701736B2 (ja) | 2011-12-20 | 2011-12-20 | 平坦化方法および平坦化装置 |
US13/603,924 US8936729B2 (en) | 2011-12-20 | 2012-09-05 | Planarizing method |
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JP2011278837A JP5701736B2 (ja) | 2011-12-20 | 2011-12-20 | 平坦化方法および平坦化装置 |
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JP2013131566A JP2013131566A (ja) | 2013-07-04 |
JP5701736B2 true JP5701736B2 (ja) | 2015-04-15 |
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JP2011278837A Expired - Fee Related JP5701736B2 (ja) | 2011-12-20 | 2011-12-20 | 平坦化方法および平坦化装置 |
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JP (1) | JP5701736B2 (ja) |
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US10879087B2 (en) | 2017-03-17 | 2020-12-29 | Toshiba Memory Corporation | Substrate treatment apparatus and manufacturing method of semiconductor device |
Family Cites Families (23)
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US6004887A (en) * | 1994-09-01 | 1999-12-21 | Kabushiki Kaisha Toshiba | Semiconductor device with improved adhesion between titanium-based metal wiring layer and insulation film |
JP3305911B2 (ja) * | 1995-03-15 | 2002-07-24 | 株式会社東芝 | 研磨方法および研磨装置並びにそれに用いる研磨砥石 |
US6103627A (en) * | 1996-02-21 | 2000-08-15 | Micron Technology, Inc. | Treatment of a surface having an exposed silicon/silica interface |
US6191463B1 (en) * | 1997-07-15 | 2001-02-20 | Kabushiki Kaisha Toshiba | Apparatus and method of improving an insulating film on a semiconductor device |
US6200896B1 (en) * | 1998-01-22 | 2001-03-13 | Cypress Semiconductor Corporation | Employing an acidic liquid and an abrasive surface to polish a semiconductor topography |
WO2001078116A2 (en) | 2000-04-11 | 2001-10-18 | Cabot Microelectronics Corporation | System for the preferential removal of silicon oxide |
JP2003209076A (ja) * | 2002-01-15 | 2003-07-25 | Hitachi Chem Co Ltd | Cmp研磨剤および基板の研磨方法 |
WO2004023539A1 (ja) * | 2002-09-06 | 2004-03-18 | Asahi Glass Company, Limited | 半導体集積回路用絶縁膜研磨剤組成物および半導体集積回路の製造方法 |
JP4248889B2 (ja) | 2002-11-22 | 2009-04-02 | Agcセイミケミカル株式会社 | 研磨材粒子の品質評価方法、研磨方法及びガラス研磨用研磨材 |
JP2004072099A (ja) | 2003-08-01 | 2004-03-04 | Hitachi Ltd | 研磨方法 |
US7566391B2 (en) * | 2004-09-01 | 2009-07-28 | Micron Technology, Inc. | Methods and systems for removing materials from microfeature workpieces with organic and/or non-aqueous electrolytic media |
JP4041110B2 (ja) * | 2004-09-29 | 2008-01-30 | Hoya株式会社 | 磁気ディスク用ガラス基板の製造方法及び磁気ディスクの製造方法 |
TW200629392A (en) * | 2004-12-22 | 2006-08-16 | Ebara Corp | Flattening method and flattening apparatus |
JP2008081389A (ja) | 2006-08-28 | 2008-04-10 | Osaka Univ | 触媒支援型化学加工方法及び装置 |
JP5007384B2 (ja) | 2006-10-18 | 2012-08-22 | 株式会社荏原製作所 | 触媒支援型化学加工方法及び装置 |
KR100809338B1 (ko) * | 2006-09-21 | 2008-03-05 | 삼성전자주식회사 | 반도체 소자 및 이의 제조 방법 |
JP2008262956A (ja) * | 2007-04-10 | 2008-10-30 | Elpida Memory Inc | 半導体装置及びその製造方法 |
JP4887266B2 (ja) * | 2007-10-15 | 2012-02-29 | 株式会社荏原製作所 | 平坦化方法 |
JP2010206094A (ja) * | 2009-03-05 | 2010-09-16 | Elpida Memory Inc | 半導体装置及びその製造方法 |
US8552425B2 (en) * | 2010-06-18 | 2013-10-08 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device |
JP5404673B2 (ja) * | 2011-02-25 | 2014-02-05 | 株式会社東芝 | Cmp装置、研磨パッド及びcmp方法 |
JP2012212752A (ja) * | 2011-03-31 | 2012-11-01 | Elpida Memory Inc | 半導体装置及びその製造方法 |
US8703004B2 (en) * | 2011-11-14 | 2014-04-22 | Kabushiki Kaisha Toshiba | Method for chemical planarization and chemical planarization apparatus |
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US8936729B2 (en) | 2015-01-20 |
US20130157464A1 (en) | 2013-06-20 |
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