JP4927529B2 - 反射性光学要素およびeuvリソグラフィー装置 - Google Patents
反射性光学要素およびeuvリソグラフィー装置 Download PDFInfo
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- 230000003287 optical effect Effects 0.000 title claims description 64
- 238000001900 extreme ultraviolet lithography Methods 0.000 title description 7
- 239000011241 protective layer Substances 0.000 claims description 76
- 239000010410 layer Substances 0.000 claims description 72
- 238000002310 reflectometry Methods 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 27
- 229910052799 carbon Inorganic materials 0.000 claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052750 molybdenum Inorganic materials 0.000 claims description 11
- 239000011733 molybdenum Substances 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- 238000009825 accumulation Methods 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 229910052790 beryllium Inorganic materials 0.000 claims description 2
- 229910003465 moissanite Inorganic materials 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 claims description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims 2
- 229910020968 MoSi2 Inorganic materials 0.000 claims 1
- 229910052581 Si3N4 Inorganic materials 0.000 claims 1
- 230000002745 absorbent Effects 0.000 claims 1
- 239000002250 absorbent Substances 0.000 claims 1
- 229910052681 coesite Inorganic materials 0.000 claims 1
- 229910052906 cristobalite Inorganic materials 0.000 claims 1
- 229910052961 molybdenite Inorganic materials 0.000 claims 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims 1
- 229910052682 stishovite Inorganic materials 0.000 claims 1
- 229910052905 tridymite Inorganic materials 0.000 claims 1
- 238000011109 contamination Methods 0.000 description 15
- 238000004140 cleaning Methods 0.000 description 10
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- 239000006096 absorbing agent Substances 0.000 description 4
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 150000001722 carbon compounds Chemical class 0.000 description 3
- -1 Si 3 N 4 Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
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- 101100069231 Caenorhabditis elegans gkow-1 gene Proteins 0.000 description 1
- 229910016006 MoSi Inorganic materials 0.000 description 1
- 229910017872 a-SiO2 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
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- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0891—Ultraviolet [UV] mirrors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
- G02B5/085—Multilayer mirrors, i.e. having two or more reflecting layers at least one of the reflecting layers comprising metal
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70058—Mask illumination systems
- G03F7/7015—Details of optical elements
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/70908—Hygiene, e.g. preventing apparatus pollution, mitigating effect of pollution or removing pollutants from apparatus
- G03F7/70916—Pollution mitigation, i.e. mitigating effect of contamination or debris, e.g. foil traps
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/7095—Materials, e.g. materials for housing, stage or other support having particular properties, e.g. weight, strength, conductivity, thermal expansion coefficient
- G03F7/70958—Optical materials or coatings, e.g. with particular transmittance, reflectance or anti-reflection properties
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
- G21K1/06—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diffraction, refraction or reflection, e.g. monochromators
- G21K1/062—Devices having a multilayer structure
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- Theoretical Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Optical Elements Other Than Lenses (AREA)
Description
本発明の課題は、実現可能な最長の寿命を有する、EUVおよび軟X線波長領域用の反射性光学要素を提供することである。さらに、本発明の課題は、実現可能な最短の停止時間を有するEUVリソグラフィー装置を提供することである。
非晶質二酸化シリコンの基板上に設けられた、50対の2.76nmのモリブデンと4.14nmの非晶質シリコン(a−SiO2)からなるMo/Si多層システム上に、3層保護層システムを堆積させる。保護層システムは、多層システムの最上層モリブデン層と、1.2nm厚のY層をもって接している。Y層上に、1.5nmのY2O3層が設けられている。真空側で、保護層は、保護層システムは、1nmの厚さの非晶質二酸化シリコン層で終わっている。材料およびその厚さは、本発明の基準に基づいている。特に、材料は、また、炭素の蓄積を抑制するように(Y2O3、a−SiO2)、またはエネルギー注入に対し不活性であるように(Y、a−SiO2)選択される。
非晶質二酸化シリコン基板に設けられ、13.5nmの操作波長について最適化された50のMo/Si対の多層システム上に、この多層システムの最上層モリブデン層に隣接する2.0nmの厚さのセリウム層および1.5nmの厚さの二酸化シリコン層からなる保護層システムを設ける。操作波長λBにおける非汚染反射性光学要素上の反射により生じた定在波の最小は、真空中で、該光学要素の表面からλB0.05のところにある。13.5nmでの操作波長における70.9%の最大反射率および1%の許容される反射率低下において、炭素汚染層は、3.5nmまでの厚さが許容される(図5参照)。この反射性光学要素は、EUVリソグラフィー装置における使用にも好適である。
Claims (12)
- EUVおよび軟X線波長領域用の反射性光学要素であって、
多層システムと、
12.5nm〜15nmの操作波長における実部が0.90〜1.03であり、かつ虚部が0〜0.025の屈折率を有する材料の少なくとも1つの層を有する保護層システムと、を備え、
前記保護層システムに面する前記多層システムの側は、実部が1とは異なる屈折率を有する吸収体からなる層であり、
前記保護層システムの厚さdは、0<d1≦d<d2であって、前記d1及びd2は、以下の条件を満たすような値であり、
前記保護層システムの厚さがd1以下の場合に、前記保護層システムの厚さの増加に応じて前記反射性光学要素の反射率が低下し、
前記保護層システムの厚さがd1及びd2の間である場合に、前記反射性光学要素の反射率が実質的に一定であり、
前記保護層システムの厚さがd2より大きい場合に、前記保護層システムの厚さの増加に応じて前記反射性光学要素の反射率が低下し、
前記厚さd1は、前記操作波長λBにおいて、前記多層システムとの反射により形成される定在波が該反射性光学要素の表面から0.1λB以下の距離において最小となるように選択され、この定在波が最小となる位置は、真空中にあることを特徴とする
反射性光学要素。 - 前記虚部が、0〜0.015であり、前記実部が、0.95〜1.02であることを特徴とする請求項1に記載の反射性光学要素。
- 前記保護層システムが、Ce、Be、SiO、SiC、SiO2、Si3N4、C、Y、MoSi2、B、Y2O3、MoS2、B4C、BN、RuxSiy、Zr、Nb、MoC、ZrO2、RuxMoy、RhxMoy、RhxSiyからなる群の中から選ばれる少なくとも1種の材料からなることを特徴とする請求項1または2に記載の反射性光学要素。
- 前記多層システムが、モリブデン層とシリコン層からなり、前記保護層システムに面する層はモリブデン層であるシステムであることを特徴とする請求項1〜3のいずれか1項に記載の反射性光学要素。
- 前記保護層システムが、真空側において、炭素の蓄積を抑制するための材料の層を有することを特徴とする請求項1〜4のいずれか1項に記載の反射性光学要素。
- 前記保護層システムが、真空側において、エネルギーの注入に不活性な材料の層を有することを特徴とする請求項1〜5のいずれか1項に記載の反射性光学要素。
- 前記保護層システムが、2つの層からなることを特徴とする請求項1〜6のいずれか1項に記載の反射性光学要素。
- 前記保護層システムが、3つの層からなることを特徴とする請求項1〜6のいずれか1項に記載の反射性光学要素。
- 前記保護層システムの厚さの関数としての反射率が、前記保護層の厚さd1とd2の間の領域において最大反射率の1%低下の範囲内で一定であることを特徴とする請求項1〜8のいずれか1項に記載の反射性光学要素。
- d1〜d2の保護層厚さの関数としての反射率が保護層の厚さdWにおいて少なくとも1つの変曲点を通り、前記保護層システムの厚さがdWよりも小さいことを特徴とする請求項1〜9のいずれか1項に記載の反射性光学要素。
- 前記保護層システムの厚さが、d1に等しいことを特徴とする請求項1〜10のいずれか1項に記載の反射性光学要素。
- 請求項1〜8のいずれか1項に記載の少なくとも1つの反射性光学要素を備えるEUVリソグラフィー装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10309084A DE10309084A1 (de) | 2003-03-03 | 2003-03-03 | Reflektives optisches Element und EUV-Lithographiegerät |
DE10309084.3 | 2003-03-03 | ||
PCT/EP2004/002014 WO2004079753A2 (de) | 2003-03-03 | 2004-03-01 | Reflektives optisches element und euv-lithographiegerät |
Publications (2)
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JP2006519386A JP2006519386A (ja) | 2006-08-24 |
JP4927529B2 true JP4927529B2 (ja) | 2012-05-09 |
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US (7) | US20060066940A1 (ja) |
JP (1) | JP4927529B2 (ja) |
DE (2) | DE10309084A1 (ja) |
WO (1) | WO2004079753A2 (ja) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
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DE10309084A1 (de) | 2003-03-03 | 2004-09-16 | Carl Zeiss Smt Ag | Reflektives optisches Element und EUV-Lithographiegerät |
DE10319005A1 (de) | 2003-04-25 | 2004-11-25 | Carl Zeiss Smt Ag | Reflektives optisches Element, optisches System und EUV-Lithographievorrichtung |
JP4613499B2 (ja) * | 2004-03-04 | 2011-01-19 | 凸版印刷株式会社 | 極限紫外線露光用マスク、ブランク、およびマスクの製造方法、並びにパターン転写方法 |
US7701554B2 (en) * | 2004-12-29 | 2010-04-20 | Asml Netherlands B.V. | Lithographic apparatus, device manufacturing method, and optical component |
JPWO2008090988A1 (ja) * | 2007-01-25 | 2010-05-20 | 株式会社ニコン | 光学素子、これを用いた露光装置、及びデバイス製造方法 |
EP1965229A3 (en) * | 2007-02-28 | 2008-12-10 | Corning Incorporated | Engineered fluoride-coated elements for laser systems |
US20080266651A1 (en) * | 2007-04-24 | 2008-10-30 | Katsuhiko Murakami | Optical apparatus, multilayer-film reflective mirror, exposure apparatus, and device |
EP2210147B1 (en) * | 2007-10-02 | 2013-05-22 | Universita Degli Studi Di Padova | Aperiodic multilayer structures |
ATE512389T1 (de) * | 2007-10-23 | 2011-06-15 | Imec | Erkennung von kontaminationen in euv-systemen |
DE102008002403A1 (de) | 2008-06-12 | 2009-12-17 | Carl Zeiss Smt Ag | Verfahren zum Herstellen einer Mehrlagen-Beschichtung, optisches Element und optische Anordnung |
DE102011083461A1 (de) * | 2011-09-27 | 2013-03-28 | Carl Zeiss Smt Gmbh | Verfahren zum Erzeugen einer Deckschicht aus Siliziumoxid an einem EUV-Spiegel |
DE102011083462A1 (de) | 2011-09-27 | 2013-03-28 | Carl Zeiss Smt Gmbh | EUV-Spiegel mit einer Oxynitrid-Deckschicht mit stabiler Zusammensetzung |
DE102012202850A1 (de) | 2012-02-24 | 2013-08-29 | Asml Netherlands B.V. | Verfahren zum Optimieren eines Schutzlagensystems für ein optisches Element, optisches Element und optisches System für die EUV-Lithographie |
DE102012207125A1 (de) | 2012-04-27 | 2013-03-28 | Carl Zeiss Smt Gmbh | Optisches Element und optisches System für die EUV-Lithographie sowie Verfahren zum Optimieren eines Schutzlagensystems für ein optisches Element |
US10185234B2 (en) * | 2012-10-04 | 2019-01-22 | Asml Netherlands B.V. | Harsh environment optical element protection |
DE102012222466A1 (de) * | 2012-12-06 | 2014-06-12 | Carl Zeiss Smt Gmbh | Reflektives optisches Element für die EUV-Lithographie |
DE102013102670A1 (de) | 2013-03-15 | 2014-10-02 | Asml Netherlands B.V. | Optisches Element und optisches System für die EUV-Lithographie sowie Verfahren zur Behandlung eines solchen optischen Elements |
EP3224675A1 (en) | 2014-11-27 | 2017-10-04 | Carl Zeiss SMT GmbH | Lithography apparatus comprising a plurality of individually controllable write heads |
US9791771B2 (en) | 2016-02-11 | 2017-10-17 | Globalfoundries Inc. | Photomask structure with an etch stop layer that enables repairs of detected defects therein and extreme ultraviolet(EUV) photolithograpy methods using the photomask structure |
DE102016103339A1 (de) * | 2016-02-25 | 2017-08-31 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Optische Beschichtung und Verfahren zur Herstellung einer optischen Beschichtung mit verminderter Lichtstreuung |
CN114127633A (zh) * | 2019-07-16 | 2022-03-01 | Asml荷兰有限公司 | 用于光学元件的耐氧损失顶部涂层 |
DE102019212910A1 (de) * | 2019-08-28 | 2021-03-04 | Carl Zeiss Smt Gmbh | Optisches Element und EUV-Lithographiesystem |
JP2021071543A (ja) * | 2019-10-29 | 2021-05-06 | ギガフォトン株式会社 | 極端紫外光集光ミラー、極端紫外光生成装置、及び電子デバイスの製造方法 |
WO2024027999A1 (en) * | 2022-07-30 | 2024-02-08 | Asml Netherlands B.V. | Reflective member for euv lithography |
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DE112004000320A5 (de) | 2007-12-06 |
US20180224585A1 (en) | 2018-08-09 |
WO2004079753A2 (de) | 2004-09-16 |
US8243364B2 (en) | 2012-08-14 |
US20130301023A1 (en) | 2013-11-14 |
US8537460B2 (en) | 2013-09-17 |
US20120293779A1 (en) | 2012-11-22 |
US20090251772A1 (en) | 2009-10-08 |
DE10309084A1 (de) | 2004-09-16 |
US20060066940A1 (en) | 2006-03-30 |
JP2006519386A (ja) | 2006-08-24 |
WO2004079753A3 (de) | 2005-04-14 |
US9910193B2 (en) | 2018-03-06 |
DE112004000320B4 (de) | 2016-11-03 |
US7952797B2 (en) | 2011-05-31 |
US20150055111A1 (en) | 2015-02-26 |
US20110228237A1 (en) | 2011-09-22 |
US8891163B2 (en) | 2014-11-18 |
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