JP4818125B2 - 犠牲反射面を有する集光器 - Google Patents
犠牲反射面を有する集光器 Download PDFInfo
- Publication number
- JP4818125B2 JP4818125B2 JP2006549533A JP2006549533A JP4818125B2 JP 4818125 B2 JP4818125 B2 JP 4818125B2 JP 2006549533 A JP2006549533 A JP 2006549533A JP 2006549533 A JP2006549533 A JP 2006549533A JP 4818125 B2 JP4818125 B2 JP 4818125B2
- Authority
- JP
- Japan
- Prior art keywords
- reflective surface
- multilayer film
- euv
- lower reflective
- mirror
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- 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
- G03F7/70175—Lamphouse reflector arrangements or collector mirrors, i.e. collecting light from solid angle upstream of the light source
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S359/00—Optical: systems and elements
- Y10S359/90—Methods
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Epidemiology (AREA)
- Public Health (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)
- Surface Treatment Of Optical Elements (AREA)
Description
放射源と;
該放射源に対向する少なくとも1つの集光ミラーとを具え;
少なくとも1つの集光ミラーが、基板、下側反射面、および上側の犠牲反射面を有している集光システムを提供する。
(a)第1多層膜が、第1の波長を有する第1の放射光に対して所望の反射率を有するように、前記第1多層膜を基板上に堆積するステップと;
(b)前記第1多層膜の上に第2の多層膜を堆積するステップと;
を有し、第2の多層膜も第1の放射光を反射する、集光ミラーの作成方法を提供する。
Claims (10)
- EUV放射を集光し、且つマスクに結像させるカメラに使用する集光システムであって、
EUV放射を発生する放射源と、
該放射源に対向する少なくとも1つの集光ミラーとを具え、
少なくとも1つの集光ミラーが、基板、下側反射面、および上側の犠牲反射面を有し、下側の反射面は、EUV放射の少なくとも約30%の垂直入射反射率を有し、下側の反射面は前記基板の表面上に堆積した第1の多層膜からなり60%〜74%の最大のEUV反射率を達成し、且つ前記犠牲反射面は、前記下側反射面の表面上に堆積した第2の多層膜とし、
上側の犠牲反射面は、前記下側反射面が露光される前に、EUV放射の露光で先ず浸食され、所定期間、前記下側反射面が前記最大のEUV反射率を維持し、
前記第1の多層膜が、約20〜80個の層対を有し、前記第2の多層膜が、約100〜400個の層対を有し、
前記第2の多層膜の厚さが、前記第1多層膜の厚さの少なくとも2倍である、集光システム。 - ソース像を形成する放射源からの極紫外(EUV)放射を集光するための一組のミラーと、前記一組のミラーからの1本以上のビームを並進または回転させること、或いはこれらの両方が可能であり、且つ1本以上のビームの収束またはソース像の大きさを変更することが可能な補正ミラーとを有する集光システムであって、
該集光システムが、EUV放射源に対向する少なくとも1つの集光ミラーを含み、
該集光ミラーが、基板、下側反射面、および上側の犠牲反射面を有し、下側の反射面は、EUV放射の少なくとも約30%の垂直入射反射率を有し、下側の反射面は前記基板の表面上に堆積した第1の多層膜からなり60%〜74%の最大のEUV反射率を達成し、且つ前記犠牲反射面は、前記下側反射面の表面上に堆積した第2の多層膜とし、
上側の犠牲反射面は、前記下側反射面が露光される前に、EUV放射の露光で先ず浸食され、所定期間、前記下側反射面が前記最大のEUV反射率を維持し、
前記第1の多層膜が、約20〜80個の層対を有し、前記第2の多層膜が、約100〜400個の層対を有し、
前記第2の多層膜の厚さが、前記第1多層膜の厚さの少なくとも2倍である、集光システム。 - 前記少なくとも1つの集光ミラーが、不動態化オーバーコートを含まない、請求項1または2に記載の集光システム。
- 前記放射源が、レーザプラズマ源である、請求項1または2に記載の集光システム。
- (i)前記第1の多層膜が、第1の反射率を有する第1の材料と、第1の材料の反射率よりも大きい第2の反射率を有する第2の材料とを交互に配した層を有し、(ii)前記第2の多層膜が第3の反射率を有する第3の材料と、第3の材料の反射率よりも大きい第4の反射率を有する第4の材料とを交互に配した層を有している、請求項1または2に記載の集光システム。
- 前記犠牲反射面が、前記下側反射面の上に塗布したルテニウムを有する、請求項1または2に記載の集光システム。
- 放射源からのEUV放射を集光するための集光システムに用いる集光ミラーを作成する方法であって、
(a)下側の反射面が、EUV放射に対して最大のEUV反射率を有するように、前記下側の反射面を基板上に堆積するステップと、
(b)前記下側の反射面の上に犠牲反射面を堆積するステップと、
を有し、
前記下側の反射面が、第1の多層膜を有し、且つ上側の犠牲反射面が前記第1の多層膜の上に第2の多層膜を有し、該第2の多層膜も、EUV放射を反射し、前記下側の反射面が露光される前に、EUV放射の露光で先ず浸食され、所定期間、前記下側の反射面が前記最大のEUV反射率を維持し、
前記第1の多層膜が、約20〜80個の層対を有し、前記第2の多層膜が、約100〜400個の層対を有し、
前記第2の多層膜の厚さが、前記第1多層膜の厚さの少なくとも2倍である、集光ミラーの作成方法。 - 前記ステップ(a)が、前記EUV放射に対し少なくとも30%の反射率を有するように、第1の多層膜を基板上に堆積するステップを有する、請求項7に記載の方法。
- (i)前記第1の多層膜が、第1の屈折率を有する第1の材料と、第1の材料の屈折率よりも大きい第2の屈折率を有する第2の材料とを交互に配した層を有し、且つ
(ii)前記第2の多層膜が第3の屈折率を有する第3の材料と、第3の材料の屈折率よりも大きい第4の反射率を有する第4の材料とを交互に配した層を有している、請求項7に記載の方法。 - 放射源からEUV放射を集光する集光システムに使用するのに好適な集光ミラーを作成する装置であって、
(a)第1の多層膜を有する下側の反射面が、EUV放射に対して最大の反射率を有するように、前記下側の反射面を基板上に堆積する手段と、
(b)前記下側の反射面の上に、前記下側の反射面が露光される前に、EUV放射の露光で先ず浸食され、所定期間、前記下側の反射面が前記最大のEUV反射率を維持する、上側の犠牲反射面を堆積する手段と、
を具え、
前記下側の反射面の上の前記犠牲反射面は、ルテニウムを有する、集光ミラーの作成装置。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/760,118 US7081992B2 (en) | 2004-01-16 | 2004-01-16 | Condenser optic with sacrificial reflective surface |
| US10/760,118 | 2004-01-16 | ||
| PCT/US2005/000839 WO2005073813A2 (en) | 2004-01-16 | 2005-01-12 | Condenser optic with sacrificial reflective surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2007522651A JP2007522651A (ja) | 2007-08-09 |
| JP4818125B2 true JP4818125B2 (ja) | 2011-11-16 |
Family
ID=34749854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006549533A Expired - Fee Related JP4818125B2 (ja) | 2004-01-16 | 2005-01-12 | 犠牲反射面を有する集光器 |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US7081992B2 (ja) |
| EP (1) | EP1704446A2 (ja) |
| JP (1) | JP4818125B2 (ja) |
| WO (1) | WO2005073813A2 (ja) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7265366B2 (en) * | 2004-03-31 | 2007-09-04 | Asml Netherlands B.V. | Lithographic apparatus and device manufacturing method |
| US7740916B2 (en) * | 2004-04-05 | 2010-06-22 | Euv Llc. | Method for the protection of extreme ultraviolet lithography optics |
| US7196343B2 (en) * | 2004-12-30 | 2007-03-27 | Asml Netherlands B.V. | Optical element, lithographic apparatus including such an optical element, device manufacturing method, and device manufactured thereby |
| US7141806B1 (en) * | 2005-06-27 | 2006-11-28 | Cymer, Inc. | EUV light source collector erosion mitigation |
| US7180083B2 (en) * | 2005-06-27 | 2007-02-20 | Cymer, Inc. | EUV light source collector erosion mitigation |
| WO2007002593A1 (en) * | 2005-06-27 | 2007-01-04 | Cymer, Inc. | Euv light source collector erosion mitigation |
| US20080266651A1 (en) * | 2007-04-24 | 2008-10-30 | Katsuhiko Murakami | Optical apparatus, multilayer-film reflective mirror, exposure apparatus, and device |
| WO2008145364A2 (de) * | 2007-05-31 | 2008-12-04 | Carl Zeiss Smt Ag | Verfahren zur herstellung eines optischen elementes mit hilfe von abformung, optisches element hergestellt nach diesem verfahren, kollektor und beleuchtungssystem |
| US7960701B2 (en) | 2007-12-20 | 2011-06-14 | Cymer, Inc. | EUV light source components and methods for producing, using and refurbishing same |
| US7641349B1 (en) | 2008-09-22 | 2010-01-05 | Cymer, Inc. | Systems and methods for collector mirror temperature control using direct contact heat transfer |
| JP5534910B2 (ja) * | 2009-04-23 | 2014-07-02 | ギガフォトン株式会社 | 極端紫外光源装置 |
| WO2015161934A1 (en) * | 2014-04-23 | 2015-10-29 | Asml Netherlands B.V. | A lithographic apparatus, radiation source, and lithographic system |
| WO2017187571A1 (ja) * | 2016-04-27 | 2017-11-02 | ギガフォトン株式会社 | 極端紫外光センサユニット及び極端紫外光生成装置 |
| US10959318B2 (en) * | 2018-01-10 | 2021-03-23 | Kla-Tencor Corporation | X-ray metrology system with broadband laser produced plasma illuminator |
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| JP2002267799A (ja) * | 2001-03-07 | 2002-09-18 | Nikon Corp | 多層膜反射鏡及び多層膜反射鏡の再生方法 |
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-
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- 2005-01-12 EP EP05705478A patent/EP1704446A2/en not_active Withdrawn
- 2005-01-12 JP JP2006549533A patent/JP4818125B2/ja not_active Expired - Fee Related
- 2005-01-12 WO PCT/US2005/000839 patent/WO2005073813A2/en not_active Ceased
-
2006
- 2006-06-30 US US11/479,340 patent/US7239443B2/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001523007A (ja) * | 1997-11-10 | 2001-11-20 | ザ、リージェンツ、オブ、ザ、ユニバーシティ、オブ、カリフォルニア | 極紫外リソグラフィー用の多重層反射性コーティング用不動態化オーバーコート二重層 |
| JP2002522898A (ja) * | 1998-08-06 | 2002-07-23 | イーユーヴィー リミテッド リアビリティ コーポレーション | 極端紫外線リソグラフィコンデンサ内の回折要素 |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2007522651A (ja) | 2007-08-09 |
| US7239443B2 (en) | 2007-07-03 |
| EP1704446A2 (en) | 2006-09-27 |
| WO2005073813A3 (en) | 2006-04-06 |
| US20050157383A1 (en) | 2005-07-21 |
| US7081992B2 (en) | 2006-07-25 |
| WO2005073813A2 (en) | 2005-08-11 |
| US20060245045A1 (en) | 2006-11-02 |
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