JP5722902B2 - 二フッ化キセノン・エッチングプロセスの改良された選択性 - Google Patents
二フッ化キセノン・エッチングプロセスの改良された選択性 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 76
- 230000008569 process Effects 0.000 title claims description 62
- 238000005530 etching Methods 0.000 title claims description 61
- BLIQUJLAJXRXSG-UHFFFAOYSA-N 1-benzyl-3-(trifluoromethyl)pyrrolidin-1-ium-3-carboxylate Chemical compound C1C(C(=O)O)(C(F)(F)F)CCN1CC1=CC=CC=C1 BLIQUJLAJXRXSG-UHFFFAOYSA-N 0.000 title claims description 18
- 239000000463 material Substances 0.000 claims description 34
- 239000007789 gas Substances 0.000 claims description 33
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 23
- 229910052710 silicon Inorganic materials 0.000 claims description 23
- 239000010703 silicon Substances 0.000 claims description 23
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 21
- 239000012159 carrier gas Substances 0.000 claims description 20
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims description 9
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 9
- 230000000996 additive effect Effects 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 230000006872 improvement Effects 0.000 description 10
- 239000006227 byproduct Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 229910052734 helium Inorganic materials 0.000 description 6
- 150000004767 nitrides Chemical class 0.000 description 6
- 239000001307 helium Substances 0.000 description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 238000000859 sublimation Methods 0.000 description 3
- 230000008022 sublimation Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052754 neon Inorganic materials 0.000 description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- -1 halogen fluoride Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000011179 visual inspection Methods 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
- B81C1/00436—Shaping materials, i.e. techniques for structuring the substrate or the layers on the substrate
- B81C1/00555—Achieving a desired geometry, i.e. controlling etch rates, anisotropy or selectivity
- B81C1/00595—Control etch selectivity
-
- 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
- H01L21/30604—Chemical 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
- H01L21/02—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
- 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
- H01L21/308—Chemical or electrical treatment, e.g. electrolytic etching using masks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C2201/00—Manufacture or treatment of microstructural devices or systems
- B81C2201/01—Manufacture or treatment of microstructural devices or systems in or on a substrate
- B81C2201/0101—Shaping material; Structuring the bulk substrate or layers on the substrate; Film patterning
- B81C2201/0128—Processes for removing material
- B81C2201/013—Etching
- B81C2201/0132—Dry etching, i.e. plasma etching, barrel etching, reactive ion etching [RIE], sputter etching or ion milling
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Geometry (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Drying Of Semiconductors (AREA)
- Micromachines (AREA)
- Chemical Vapour Deposition (AREA)
Description
(a)二フッ化キセノン(XeF2)を含むエッチング材料蒸気をエッチング材料ソースから生成するステップ;
(b)エッチング材料蒸気をプロセスチャンバへ運搬するステップ;および、
(c)水素を含む第2のガスをプロセスチャンバに導入するステップ;
を含む方法が提供される。
2XeF2+Si→2Xe+SiF4(1)
この反応は周知である、しかしながら、出願人は、第2のガスとして水素を使用することが、達成されてよいエッチングの品質および選択性において非常に重要な増加を結果としてもたらすことを発見した。
エッチングされるシリコンを受け入れるプロセスチャンバ;
二フッ化キセノン蒸気ソース;
二フッ化キセノン蒸気ソースをプロセスチャンバに接続する第1のガスライン;
水素ガスソース;および、
水素ガスソースをプロセスチャンバに接続する第2のガスライン;
を備える装置が提供される。
Claims (13)
- 1つ以上のマイクロ構造を生産するためにプロセスチャンバ内でシリコン(Si)をエッチングする方法であって、
(a)二フッ化キセノン(XeF2)を含むエッチング材料蒸気をエッチング材料ソースから生成するステップ、
(b)エッチング材料蒸気を前記プロセスチャンバへ運搬するステップ、および、
(c)窒化シリコンに対する選択性を改良するために水素を含む第2のガスを添加ガスとして前記プロセスチャンバに導入するステップ、
を含む、方法。 - 前記エッチング材料蒸気を前記プロセスチャンバへ運搬するステップは、前記エッチング材料ソースにキャリアガスを供給するステップを含み、前記キャリアガスは、その後、前記エッチング材料蒸気を前記プロセスチャンバへ搬送する、請求項1に記載の方法。
- 前記エッチング材料蒸気を前記プロセスチャンバへ運搬するステップは、前記エッチング材料ソースから前記エッチング材料蒸気を集めるために1つ以上の膨張チャンバを使用するステップを含む、請求項1または請求項2に記載の方法。
- 前記プロセスチャンバから真空ポンピング速度を制御することによって、前記プロセスチャンバの中の前記エッチング材料蒸気の量を制御する追加ステップを含む、請求項1〜3のいずれか1項に記載の方法。
- 前記エッチング材料蒸気を循環させる追加ステップを含む、請求項1〜3のいずれか1項に記載の方法。
- 前記シリコンの選択的エッチングを許容するために前記シリコンの上に置かれるマスクを提供する追加ステップを含む、請求項1〜5のいずれか1項に記載の方法。
- 1つ以上のマイクロ構造を生産するためにシリコン(Si)をエッチングする気相エッチング装置であって、
エッチングされるシリコンを受け入れるプロセスチャンバ、
二フッ化キセノン蒸気ソース、
前記二フッ化キセノン蒸気ソースを前記プロセスチャンバに接続する第1のガスライン、
水素ガスソース、および、
窒化シリコンに対する選択性を改良するために水素ガスを添加ガスとして前記プロセスチャンバに導入するために、前記水素ガスソースを前記プロセスチャンバに接続する第2のガスライン、
を備える、装置。 - 前記二フッ化キセノン蒸気ソースから前記プロセスチャンバまで二フッ化キセノン蒸気を搬送するキャリアガスソースをさらに備える、請求項7に記載の装置。
- エッチング材料ソースからエッチング材料蒸気を集めるために1つ以上の膨張チャンバをさらに備える、請求項7または8に記載の装置。
- 前記第2のガスラインは前記二フッ化キセノン蒸気ソースに接続され、前記水素ガスソースは二フッ化キセノン蒸気を前記プロセスチャンバへ搬送するために使用される、請求項7〜9のいずれか1項に記載の装置。
- 前記プロセスチャンバに接続された真空ポンプをさらに備え、前記プロセスチャンバの中のエッチング材料蒸気および/または水素ガスの量は、前記真空ポンプのポンピング速度を制御することによって制御される、請求項7〜10のいずれか1項に記載の装置。
- 前記プロセスチャンバの中のエッチング材料蒸気および/または水素ガスの量を制御するために前記第1のガスラインおよび/または前記第2のガスラインに接続された1つ以上のフローコントローラをさらに備える、請求項7〜11のいずれか1項に記載の装置。
- 前記装置は、前記エッチング材料蒸気および/または水素ガスを循環させるために構成される、請求項7〜10のいずれか1項に記載の装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0916871.7 | 2009-09-25 | ||
GB0916871A GB2473851C (en) | 2009-09-25 | 2009-09-25 | Improved selectivity in a xenon difluoride etch process |
PCT/GB2010/051611 WO2011036496A1 (en) | 2009-09-25 | 2010-09-27 | Improved selectivity in a xenon difluoride etch process |
Publications (2)
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JP2013506284A JP2013506284A (ja) | 2013-02-21 |
JP5722902B2 true JP5722902B2 (ja) | 2015-05-27 |
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Country Status (8)
Country | Link |
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US (1) | US9786526B2 (ja) |
EP (1) | EP2480493B1 (ja) |
JP (1) | JP5722902B2 (ja) |
CN (1) | CN102712462B (ja) |
DK (1) | DK2480493T3 (ja) |
ES (1) | ES2732128T3 (ja) |
GB (1) | GB2473851C (ja) |
WO (1) | WO2011036496A1 (ja) |
Families Citing this family (11)
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GB2487716B (en) | 2011-01-24 | 2015-06-03 | Memsstar Ltd | Vapour Etch of Silicon Dioxide with Improved Selectivity |
CN103021812B (zh) * | 2012-12-20 | 2016-02-17 | 中国科学院上海微系统与信息技术研究所 | 一种ⅲ-ⅴoi结构的制备方法 |
JP6231893B2 (ja) | 2014-01-27 | 2017-11-15 | キヤノン株式会社 | 半導体装置の製造方法および半導体装置の製造装置 |
JP2015149366A (ja) * | 2014-02-05 | 2015-08-20 | キヤノン株式会社 | 半導体装置の製造方法 |
CN104944364B (zh) * | 2014-03-26 | 2018-11-06 | 盛美半导体设备(上海)有限公司 | 二氧化硅释放工艺 |
CN107210261B (zh) * | 2015-02-15 | 2021-03-12 | 盛美半导体设备(上海)股份有限公司 | 去除阻挡层使侧壁凹陷最小化的方法 |
US10079150B2 (en) | 2015-07-23 | 2018-09-18 | Spts Technologies Limited | Method and apparatus for dry gas phase chemically etching a structure |
JP6904814B2 (ja) | 2017-06-30 | 2021-07-21 | キヤノン株式会社 | 中空構造体の製造方法、及び中空構造体 |
GB2580858B (en) * | 2018-09-07 | 2021-07-21 | Memsstar Ltd | A method for detecting defects in thin film layers |
GB2598263B (en) | 2019-11-14 | 2022-09-21 | Memsstar Ltd | Method of manufacturing a microstructure |
GB2606747A (en) | 2021-05-19 | 2022-11-23 | Memsstar Ltd | Method of manufacturing a microstructure |
Family Cites Families (14)
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JPH02250323A (ja) * | 1989-03-24 | 1990-10-08 | Hitachi Ltd | エッチング方法及び装置 |
JPH0496222A (ja) * | 1990-08-03 | 1992-03-27 | Fujitsu Ltd | 半導体装置の製造方法 |
US5716494A (en) * | 1992-06-22 | 1998-02-10 | Matsushita Electric Industrial Co., Ltd. | Dry etching method, chemical vapor deposition method, and apparatus for processing semiconductor substrate |
JP3198302B2 (ja) * | 1999-04-20 | 2001-08-13 | 岡崎国立共同研究機構長 | 微細構造パターンの形成方法 |
US6290864B1 (en) * | 1999-10-26 | 2001-09-18 | Reflectivity, Inc. | Fluoride gas etching of silicon with improved selectivity |
US7041224B2 (en) * | 1999-10-26 | 2006-05-09 | Reflectivity, Inc. | Method for vapor phase etching of silicon |
US6949202B1 (en) * | 1999-10-26 | 2005-09-27 | Reflectivity, Inc | Apparatus and method for flow of process gas in an ultra-clean environment |
AU2001218942A1 (en) * | 2000-12-18 | 2002-07-01 | Sumitomo Precision Products Co., Ltd. | Cleaning method and etching method |
US7027200B2 (en) * | 2002-03-22 | 2006-04-11 | Reflectivity, Inc | Etching method used in fabrications of microstructures |
WO2009034697A1 (ja) * | 2007-09-11 | 2009-03-19 | Panasonic Corporation | シリコン構造体およびその製造方法並びにセンサチップ |
GB0413554D0 (en) | 2004-06-17 | 2004-07-21 | Point 35 Microstructures Ltd | Improved method and apparartus for the etching of microstructures |
CN1772594A (zh) * | 2004-09-27 | 2006-05-17 | Idc公司 | 便携式XeF2蚀刻室及其使用方法 |
US7192868B2 (en) * | 2005-02-08 | 2007-03-20 | International Business Machines Corporation | Method of obtaining release-standing micro structures and devices by selective etch removal of protective and sacrificial layer using the same |
WO2007100933A2 (en) * | 2006-01-12 | 2007-09-07 | Kla Tencor Technologies Corporation | Etch selectivity enhancement, deposition quality evaluation, structural modification and three-dimensional imaging using electron beam activated chemical etch |
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JP2013506284A (ja) | 2013-02-21 |
EP2480493B1 (en) | 2019-05-01 |
CN102712462B (zh) | 2016-04-20 |
GB2473851B (en) | 2013-04-10 |
WO2011036496A1 (en) | 2011-03-31 |
CN102712462A (zh) | 2012-10-03 |
GB0916871D0 (en) | 2009-11-11 |
ES2732128T3 (es) | 2019-11-20 |
EP2480493A1 (en) | 2012-08-01 |
US20120238101A1 (en) | 2012-09-20 |
GB2473851C (en) | 2013-08-21 |
GB2473851A (en) | 2011-03-30 |
US9786526B2 (en) | 2017-10-10 |
DK2480493T3 (da) | 2019-07-15 |
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