JP5657352B2 - 露光量評価方法および反射型基板 - Google Patents
露光量評価方法および反射型基板 Download PDFInfo
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- 239000000758 substrate Substances 0.000 title claims description 41
- 238000011156 evaluation Methods 0.000 title claims description 16
- 238000010521 absorption reaction Methods 0.000 claims description 40
- 238000009826 distribution Methods 0.000 claims description 19
- 238000012546 transfer Methods 0.000 claims description 15
- 238000002310 reflectometry Methods 0.000 claims description 9
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 94
- 238000010586 diagram Methods 0.000 description 16
- 229910016006 MoSi Inorganic materials 0.000 description 13
- 239000000463 material Substances 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 238000001579 optical reflectometry Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021344 molybdenum silicide Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- 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
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/22—Masks or mask blanks for imaging by radiation of 100nm or shorter wavelength, e.g. X-ray masks, extreme ultraviolet [EUV] masks; Preparation thereof
- G03F1/24—Reflection masks; Preparation thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/429—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to measurement of ultraviolet light
-
- 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
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/68—Preparation processes not covered by groups G03F1/20 - G03F1/50
- G03F1/82—Auxiliary processes, e.g. cleaning or inspecting
- G03F1/84—Inspecting
-
- 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
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
- G03F7/70605—Workpiece metrology
- G03F7/70616—Monitoring the printed patterns
- G03F7/70625—Dimensions, e.g. line width, critical dimension [CD], profile, sidewall angle or edge roughness
-
- 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
- G03F7/7085—Detection arrangement, e.g. detectors of apparatus alignment possibly mounted on wafers, exposure dose, photo-cleaning flux, stray light, thermal load
-
- 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
- G03F7/70941—Stray fields and charges, e.g. stray light, scattered light, flare, transmission loss
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- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Epidemiology (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Preparing Plates And Mask In Photomechanical Process (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
図1は、EUV露光装置の構成を示す図である。EUV露光装置1は、ウエハ20などの基板にEUV光を照射して、EUV露光を行う装置である。EUV露光装置1は、製品ウエハ(図示せず)への露光を行う際には、回路パターン(マスクパターン)が形成されたマスク(図示せず)を用いて、製品ウエハへの露光を行う。また、EUV露光装置1は、DUV光などのEUV光以外の長波長を有したOutband(DUV光など)を評価する際には、露光量評価用のマスク(フォトマスク)2Xを用いて、ウエハ20への露光を行う。
P<λ/{(1+σ)NA}・・・(1)
Claims (9)
- 露光光のうちEUV光よりも長い波長を有した長波長光を反射し且つ前記EUV光を吸収する長波長光反射膜と、前記長波長光反射膜の上層側に配置されるとともに前記EUV光および前記長波長光を吸収する吸収膜を用いて形成されたマスクパターンとを有したフォトマスクと、レジストが塗布された露光対象の基板と、をEUV露光装置内にセットするセットステップと、
前記フォトマスクに対し前記マスクパターン側から前記露光光を照射するとともに、前記フォトマスクで反射された露光光を前記基板に照射する照射ステップと、
前記基板に照射された露光光の露光量に基づいて、前記基板に照射された長波長光の光量分布を測定する光量測定ステップと、
を含むことを特徴とする露光量評価方法。 - 露光光のうちEUV光よりも長い波長を有した長波長光および前記EUV光を吸収する吸収膜と、前記吸収膜の上層側に配置されるとともに前記EUV光を吸収し且つ前記長波長光を反射する長波長光反射膜を用いて形成されたマスクパターンとを有したフォトマスクと、レジストが塗布された露光対象の基板と、をEUV露光装置内にセットするセットステップと、
前記フォトマスクに対し前記マスクパターン側から前記露光光を照射するとともに、前記フォトマスクで反射された露光光を前記基板に照射する照射ステップと、
前記基板に照射された露光光の露光量に基づいて、前記基板に照射された長波長光の光量分布を測定する光量測定ステップと、
を含むことを特徴とする露光量評価方法。 - 前記フォトマスクで反射された露光光が照射された基板を現像することによって、前記基板上に前記マスクパターンに応じた転写パターンを形成する転写パターン形成ステップをさらに含み、
前記光量測定ステップは、前記転写パターンのパターン形状に基づいて、前記基板に照射された長波長光の光量分布を測定することを特徴とする請求項1または2に記載の露光量評価方法。 - 前記マスクパターンは、所定の周期でラインパターンとスペース領域とが交互に配置されたパターン形状を有していることを特徴とする請求項1〜3のいずれか1つに記載の露光量評価方法。
- 前記周期は、前記長波長光の波長領域の中心波長をλとし、前記EUV露光装置の投影光学系開口数をNAとし、前記露光光の有効光源の大きさをσとし、前記周期をPとした場合に、P<λ/{(1+σ)NA}の関係を有していることを特徴とする請求項4に記載の露光量評価方法。
- 前記吸収膜は、Cr、C、Cr/CrO、SiO、SiNまたはCr/Fを含んで構成されていることを特徴とする請求項1に記載の露光量評価方法。
- 前記長波長光反射膜は、Taを含んで構成されていることを特徴とする請求項2に記載の露光量評価方法。
- EUV露光装置の反射マスク位置に装着可能な反射型基板であって、
露光光のうちEUV光よりも長い波長を有した長波長光の露光量の評価に用いられるとともに、
前記EUV光に対して反射性を有するマスク基板の上層に、
前記長波長光を反射し且つ前記EUV光を吸収する長波長光反射膜と、
前記長波長光反射膜の上層側に配置されるとともに前記EUV光および前記長波長光を吸収する吸収膜を用いて形成されたマスクパターンと、
が形成されていることを特徴とする反射型基板。 - EUV露光装置の反射マスク位置に装着可能な反射型基板であって、
露光光のうちEUV光よりも長い波長を有した長波長光の露光量の評価に用いられるとともに、
前記長波長光および前記EUV光を吸収する基板の上層に、
前記EUV光に対して反射性を有する膜で形成されたマスクパターンと、
前記反射膜で形成されたマスクパターンの上層側に配置されるとともに前記EUV光を吸収し且つ前記長波長光を反射する長波長光反射膜と、
が形成されていることを特徴とする反射型基板。
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JP2010252134A JP5657352B2 (ja) | 2010-11-10 | 2010-11-10 | 露光量評価方法および反射型基板 |
US13/237,736 US9110374B2 (en) | 2010-11-10 | 2011-09-20 | Exposure amount evaluation method and photomask |
US14/795,923 US9250512B2 (en) | 2010-11-10 | 2015-07-10 | Exposure amount evaluation method and photomask |
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JP2010252134A JP5657352B2 (ja) | 2010-11-10 | 2010-11-10 | 露光量評価方法および反射型基板 |
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JP2012104670A JP2012104670A (ja) | 2012-05-31 |
JP5657352B2 true JP5657352B2 (ja) | 2015-01-21 |
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Families Citing this family (3)
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DE102014216121A1 (de) * | 2014-08-13 | 2016-02-18 | Carl Zeiss Smt Gmbh | Maske für die EUV-Lithographie, EUV-Lithographieanlage und Verfahren zum Bestimmen eines durch DUV-Strahlung hervorgerufenen Kontrastanteils |
US10935673B2 (en) * | 2016-11-15 | 2021-03-02 | Asml Netherlands B.V. | Radiation analysis system |
JP7506114B2 (ja) | 2022-07-01 | 2024-06-25 | アルバック成膜株式会社 | マスクブランクスの製造方法及びマスクブランクス、フォトマスク |
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JPH04151818A (ja) * | 1990-10-16 | 1992-05-25 | Canon Inc | リソグラフィー用マスク構造体の製造方法 |
JP3250415B2 (ja) * | 1995-04-28 | 2002-01-28 | 凸版印刷株式会社 | ハーフトーン型位相シフトマスクの製造方法 |
JP3302926B2 (ja) | 1998-07-02 | 2002-07-15 | 株式会社東芝 | 露光装置の検査方法 |
JP3674591B2 (ja) | 2002-02-25 | 2005-07-20 | ソニー株式会社 | 露光用マスクの製造方法および露光用マスク |
EP1426824A1 (en) * | 2002-12-04 | 2004-06-09 | ASML Netherlands B.V. | Lithographic apparatus, device manufacturing method, and device manufactured thereby |
WO2005008754A1 (ja) * | 2003-07-18 | 2005-01-27 | Nikon Corporation | フレア計測方法、露光方法、及びフレア計測用のマスク |
US7034923B2 (en) | 2004-01-21 | 2006-04-25 | Asml Netherlands B.V. | Optical element, lithographic apparatus comprising such optical element and device manufacturing method |
JP4635610B2 (ja) * | 2005-01-07 | 2011-02-23 | 凸版印刷株式会社 | 反射型フォトマスクブランク、反射型フォトマスク、及び反射型フォトマスクの製造方法 |
JP2006237184A (ja) * | 2005-02-24 | 2006-09-07 | Sony Corp | マスク補正方法および露光用マスク |
JP2007206333A (ja) * | 2006-02-01 | 2007-08-16 | Elpida Memory Inc | フレア測定用マスク及びフレア測定方法 |
JP2008041740A (ja) | 2006-08-02 | 2008-02-21 | Toppan Printing Co Ltd | 反射型フォトマスクブランク、反射型フォトマスク及び極端紫外線の露光方法 |
JP2008198788A (ja) * | 2007-02-13 | 2008-08-28 | Toshiba Corp | レジストパターン形成方法 |
US8018578B2 (en) * | 2007-04-19 | 2011-09-13 | Asml Netherlands B.V. | Pellicle, lithographic apparatus and device manufacturing method |
JP5018212B2 (ja) * | 2007-04-26 | 2012-09-05 | 凸版印刷株式会社 | 反射型フォトマスクブランク及び反射型フォトマスク並びに半導体装置の製造方法 |
NL1036695A1 (nl) | 2008-05-15 | 2009-11-17 | Asml Netherlands Bv | Lithographic apparatus. |
US8399159B2 (en) * | 2008-11-26 | 2013-03-19 | Hoya Corporation | Mask blank substrate |
JP5330019B2 (ja) * | 2009-02-18 | 2013-10-30 | ルネサスエレクトロニクス株式会社 | マスクパターンの検査方法およびマスクパターン検査装置 |
JP5397596B2 (ja) * | 2009-03-03 | 2014-01-22 | 株式会社ニコン | フレア計測方法及び露光方法 |
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US9110374B2 (en) | 2015-08-18 |
US20150331308A1 (en) | 2015-11-19 |
US9250512B2 (en) | 2016-02-02 |
US20120112085A1 (en) | 2012-05-10 |
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