JP5449286B2 - 二次イオンの収量を高める方法及び装置 - Google Patents
二次イオンの収量を高める方法及び装置 Download PDFInfo
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- JP5449286B2 JP5449286B2 JP2011210846A JP2011210846A JP5449286B2 JP 5449286 B2 JP5449286 B2 JP 5449286B2 JP 2011210846 A JP2011210846 A JP 2011210846A JP 2011210846 A JP2011210846 A JP 2011210846A JP 5449286 B2 JP5449286 B2 JP 5449286B2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/225—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material using electron or ion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/252—Tubes for spot-analysing by electron or ion beams; Microanalysers
- H01J37/256—Tubes for spot-analysing by electron or ion beams; Microanalysers using scanning beams
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/25—Tubes for localised analysis using electron or ion beams
- H01J2237/2505—Tubes for localised analysis using electron or ion beams characterised by their application
- H01J2237/2516—Secondary particles mass or energy spectrometry
- H01J2237/2527—Ions [SIMS]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/30—Electron or ion beam tubes for processing objects
- H01J2237/317—Processing objects on a microscale
- H01J2237/3174—Etching microareas
- H01J2237/31742—Etching microareas for repairing masks
- H01J2237/31744—Etching microareas for repairing masks introducing gas in vicinity of workpiece
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- 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
- Y10S977/00—Nanotechnology
- Y10S977/84—Manufacture, treatment, or detection of nanostructure
- Y10S977/842—Manufacture, treatment, or detection of nanostructure for carbon nanotubes or fullerenes
- Y10S977/843—Gas phase catalytic growth, i.e. chemical vapor deposition
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- 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
- Y10S977/00—Nanotechnology
- Y10S977/84—Manufacture, treatment, or detection of nanostructure
- Y10S977/88—Manufacture, treatment, or detection of nanostructure with arrangement, process, or apparatus for testing
- Y10S977/881—Microscopy or spectroscopy, e.g. sem, tem
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- 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
- Y10S977/00—Nanotechnology
- Y10S977/84—Manufacture, treatment, or detection of nanostructure
- Y10S977/89—Deposition of materials, e.g. coating, cvd, or ald
- Y10S977/891—Vapor phase deposition
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- 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
- Y10S977/00—Nanotechnology
- Y10S977/84—Manufacture, treatment, or detection of nanostructure
- Y10S977/895—Manufacture, treatment, or detection of nanostructure having step or means utilizing chemical property
-
- 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
- Y10S977/00—Nanotechnology
- Y10S977/902—Specified use of nanostructure
- Y10S977/932—Specified use of nanostructure for electronic or optoelectronic application
- Y10S977/949—Radiation emitter using nanostructure
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- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Electron Sources, Ion Sources (AREA)
- Electron Tubes For Measurement (AREA)
Description
集束イオンビーム(FIB)システムは、非常に良い解像度で撮像、エッチング、堆積、及び、分析するその能力のために半導体製造において幅広く使用される。二次イオン質量分析計(SIMS)は、サンプルの成分を決定するためにしばしばFIBシステムと共に使用される方法である。SIMS処理では、イオンビームは、スパッタリング、つまり、エネルギー移動によって原子、分子、及び、クラスタのような粒子をサンプルから物理的に放出させるために使用される。これら放出された粒子の小さい割合は、イオン化、つまり、スパッタリング処理中に一つ以上の電子を獲得又は損失され、それによって電気的に荷電される。このような放出された荷電粒子は、集束イオンビーム中の一次イオンに対し二次イオンとして公知である。磁気及び/又は電界の組み合わせを含む質量分析計に二次イオンを通すことにより、二次イオンの電荷対質量比を決定し、その成分を導き出すことが可能となる。
従って、本発明は、SMISシステムの感度を増加することを目的とする。
本発明の好ましい実施例によるシステムは、ビームに衝突される試料表面の領域の方向に水蒸気を注入するガス注入システムと、試料から放出される粒子を分析する二次イオン質量分析計とを含む荷電粒子ビームシステムを有する。
Claims (10)
- 二次イオン質量分析を用いて元素を含むサンプルを分析する方法であって:
表面に未知の元素含量の部分を含む上記サンプルを、集束イオンビームシステムの密閉されたチャンバ内に位置決めする段階;
水蒸気の一部を前記サンプル表面上に吸着させることを可能にするために、上記チャンバ内に上記水蒸気を供給する段階;
液体金属イオン源から生成される1μm未満のスポットサイズを有する集束イオンビームを発生させる段階;
上記の未知の含量の部分を含む表面の少なくとも一部をスパッタエッチングするために上記イオンビームを上記表面に方向付ける段階であって、上記の吸着した水蒸気は、上記スパッタエッチングにより生成された二次イオンの収率を増大させる段階;
上記サンプルの上記表面から上記二次イオンを受容する段階;
上記二次イオンを質量分析器に方向付ける段階;及び、
上記二次イオンを分析して、上記サンプルに含まれる未知の元素含量を特定する段階;
を有する、方法。 - 上記二次イオンを上記質量分析器に方向付ける段階は正のイオンを上記質量分析器に方向付けることを含む請求項1記載の方法。
- 上記水蒸気は上記チャンバの外側にある貯蔵器から提供される請求項1記載の方法。
- 上記チャンバ内に上記水蒸気を供給する段階は注入針を通じて上記表面の方向に上記水蒸気を方向付けることを含む請求項1記載の方法。
- 上記イオンビームは液体金属イオン源を使用して発生される請求項1記載の方法。
- 上記液体金属はガリウムを有する請求項5記載の方法。
- 上記表面に上記イオンビームを方向付ける段階は、上記サンプルの質量スペクトル又は上記サンプル中に存在する材料の深さのプロフィールを決定するように、又は画成された領域内に存在する材料をマッピングするように、上記イオンビームをパターン状に方向付けることを含む請求項1記載の方法。
- 上記チャンバの内部を1.3×10−4Pa乃至6.7×10−2Paの範囲の圧力で維持するために上記チャンバを排気することを含む請求項1記載の方法。
- 上記水蒸気と上記サンプルとの間での反応を開始させることで上記サンプルをスパッタエッチングする上記イオンビームが、上記水蒸気が存在しない状態よりも、二次中性粒子に対する二次イオンの比を大きくする、請求項1に記載の方法。
- 上記サンプルは、シリコン、アルミニウム、チタン、モリブデン、又はタングステンを有する、請求項1に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/350,718 US6414307B1 (en) | 1999-07-09 | 1999-07-09 | Method and apparatus for enhancing yield of secondary ions |
US09/350,718 | 1999-07-09 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001509972A Division JP4863593B2 (ja) | 1999-07-09 | 2000-07-05 | 二次イオンの収量を高める方法及び装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012008145A JP2012008145A (ja) | 2012-01-12 |
JP5449286B2 true JP5449286B2 (ja) | 2014-03-19 |
Family
ID=23377894
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001509972A Expired - Fee Related JP4863593B2 (ja) | 1999-07-09 | 2000-07-05 | 二次イオンの収量を高める方法及び装置 |
JP2011210846A Expired - Fee Related JP5449286B2 (ja) | 1999-07-09 | 2011-09-27 | 二次イオンの収量を高める方法及び装置 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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JP2001509972A Expired - Fee Related JP4863593B2 (ja) | 1999-07-09 | 2000-07-05 | 二次イオンの収量を高める方法及び装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US6414307B1 (ja) |
EP (1) | EP1185857B1 (ja) |
JP (2) | JP4863593B2 (ja) |
DE (1) | DE60036376T2 (ja) |
WO (1) | WO2001004611A2 (ja) |
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-
1999
- 1999-07-09 US US09/350,718 patent/US6414307B1/en not_active Expired - Lifetime
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2000
- 2000-07-05 JP JP2001509972A patent/JP4863593B2/ja not_active Expired - Fee Related
- 2000-07-05 DE DE60036376T patent/DE60036376T2/de not_active Expired - Lifetime
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EP1185857A2 (en) | 2002-03-13 |
JP2003504616A (ja) | 2003-02-04 |
JP2012008145A (ja) | 2012-01-12 |
JP4863593B2 (ja) | 2012-01-25 |
EP1185857B1 (en) | 2007-09-12 |
DE60036376D1 (de) | 2007-10-25 |
WO2001004611A3 (en) | 2001-12-13 |
WO2001004611A2 (en) | 2001-01-18 |
US6414307B1 (en) | 2002-07-02 |
DE60036376T2 (de) | 2008-01-17 |
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