JP4613167B2 - 少なくとも一つの光学要素を洗浄する方法および装置 - Google Patents
少なくとも一つの光学要素を洗浄する方法および装置 Download PDFInfo
- Publication number
- JP4613167B2 JP4613167B2 JP2006530881A JP2006530881A JP4613167B2 JP 4613167 B2 JP4613167 B2 JP 4613167B2 JP 2006530881 A JP2006530881 A JP 2006530881A JP 2006530881 A JP2006530881 A JP 2006530881A JP 4613167 B2 JP4613167 B2 JP 4613167B2
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- Prior art keywords
- optical element
- reaction
- cleaning
- light source
- gas
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- Expired - Lifetime
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- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
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Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0057—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by ultraviolet radiation
-
- 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
- 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
- G03F7/70166—Capillary or channel elements, e.g. nested extreme ultraviolet [EUV] mirrors or shells, optical fibers or light guides
-
- 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
- G03F7/70925—Cleaning, i.e. actively freeing apparatus from pollutants, e.g. using plasma cleaning
-
- 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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Nanotechnology (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Optics & Photonics (AREA)
- Theoretical Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- Cleaning In General (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Cleaning Or Drying Semiconductors (AREA)
Description
ar=rω2
で与えられる。
vmax=ωrL/B
のものでもまだ除去できる。典型的な値r=5cm、L/B=10、回転周波数7回転毎秒から、引っかかる粒子の最大速度として22m/sが得られる。
・フォイルトラップ10の緩衝ガス20とはガスの種類が異なる侵入防止ガス20′を追加的に光源1の領域に供給。これは光源1の領域における反対圧力となり、フォイルトラップ10または11と11′(図13)から光源1へのガス流の減少につながる。それにより光源1の位置におけるフォイルトラップ緩衝ガスの分圧は減少する。これは、光源1の稼動がフォイルトラップ緩衝ガス20の分圧が低いときにのみ可能であるような場合に有利である。使用されるべき侵入防止ガスは、たとえば、水素、窒素、ヘリウムその他の希ガスなどがあり、また可能性としては混合物でもよい。
・フォイルトラップ10の緩衝ガス20とはガスの種類が異なる侵入防止ガスを追加的に集光器3の領域に供給。これは集光器の領域における反対圧力となり、フォイルトラップ10または11と11′から集光器3へのガス流の減少につながる。それにより集光器空間におけるフォイルトラップ緩衝ガスの分圧は減少する。これは、フォイルトラップ緩衝ガスが放射を吸収する作用が、集光器空間におけるより吸収性の少ない手段によって避けられる場合に有益である。前段落において述べたガスが使用できる。
・電場または磁場によるごみ抑制。電磁場によって荷電粒子は偏向させ、システムの害のない領域に誘導することができる。
・フォイルトラップ10もしくは集光器3またはその両方の真空容器からの電気的絶縁。それにより、放っておけばスパッタリングのために反射層を損ないうる、集光器の空間における二次放電が防止できる。
2 真空容器
3 集光器
4 真空ポンプにつながる管
5 中間焦点
6 光路の例
7 ごみ抑制システム
10 フォイルトラップ
11 二重フォイルトラップ
12 吸引装置
13 回転軸
14 モーター
15 除去されたごみ物質の捕集器
20 緩衝ガス供給
20′ 侵入防止ガス
21 緩衝ガスの出射ノズル
30 光源収容器
31 光源隔離板
32 集光器隔離板
33 フォイルトラップと集光器の間の隔離板
34 取り付け環兼外封止面
35 中心部材兼内封止面
36 可動隔離区画
37 冷却装置
40 洗浄ガス供給
41 洗浄ガスの出射ノズル
42 洗浄ガス
43 光学要素(鏡など)
44 EUV光
45 ごみ粒子
46 付着ごみ粒子、ごみ物質
47 揮発性反応生成物
110 光学要素
112 照射装置
114 真空容器
116 光源
118 光線
120 被加工物
122 無機物質
124 反応相手
125 励起装置
126 供給装置
128 付着物
130 反応生成物
132 補給装置
134 測定装置
136 供給管
138 冷却装置
140 ノズル
142 被覆
144 材料
146 加熱装置
148 区分
P 真空ポンプ
Claims (18)
- 真空容器中の、特に極端紫外線および/または軟X線放射を生成する少なくとも一つの光源を有する少なくとも一つの照射装置の少なくとも一つの光学要素を洗浄する方法であって、前記極端紫外線および/または軟X線放射の光線が前記光学要素を通じて処理されるべき被加工物へと導かれ、前記光学要素は処理の間に少なくとも部分的には前記光源によって導入される無機物質のために汚染されるものであって、支配的な反応条件に依存して前記光線に実質半透明または透明な少なくとも一つの反応相手が供給装置を通じて導入され、汚染付着物を液体または揮発性の反応生成物に転換して汚染付着物を当該光学要素から除去するよう前記反応相手が汚染付着物と化学反応し、ここで、前記反応相手は補給装置を通じて無機物質もしくは付着物またはその両方の導入された量に対して過剰な量供給されるか、あるいは無機物質もしくは付着物またはその両方の導入された量の化学当量までの割合で供給される方法。
- 前記反応相手が当該光学要素上に集束させられることを特徴とする、請求項1記載の方法。
- 洗浄対象でない照射装置の要素が前記反応相手または洗浄ガスとの接触に対して保護されることを特徴とする、請求項1または2記載の方法。
- 洗浄すべき当該光学要素が洗浄工程の間、真空系の残りの部分から隔離されることを特徴とする、請求項1記載の方法。
- 真空容器中の、特に極端紫外線および/または軟X線放射を生成する少なくとも一つの光源を有する少なくとも一つの照射装置の少なくとも一つの光学要素を洗浄する方法であって、前記光線が前記光学要素を通じて処理されるべき被加工物へと導かれ、前記光学要素は処理の間に少なくとも部分的には前記光源によって導入される無機物質のために汚染される、特に請求項1ないし4のうちいずれか一項記載のものであって、前記導入された無機物質が光源と集光器との間のフォイルトラップによって抑制されることを特徴とする方法。
- 前記フォイルトラップの緩衝ガスとはガスの種類が異なる侵入防止ガスが追加的に光源領域もしくは集光器領域またはその両方に与えられることを特徴とする、請求項5記載の方法。
- 付着物抑制のため電場もしくは磁場またはその両方が加えられることを特徴とする、請求項5または6記載の方法。
- 真空容器中の、特に極端紫外線および/または軟X線放射を生成する少なくとも一つの光源を有する少なくとも一つの照射装置の少なくとも一つの光学要素を洗浄する方法であって、前記光線が前記光学要素を通じて処理されるべき被加工物へと導かれ、前記光学要素は処理の間に少なくとも部分的には前記光源によって導入される無機物質のために汚染されるもの、特に請求項1ないし7のうちいずれか一項に記載された方法であって、電子的に制御され、調整されることを特徴とする方法。
- 当該光学要素の汚染度が必要に応じて、あるいは連続的に測定されることを特徴とする、請求項8記載の方法。
- 前記汚染度がいくつかの位置で測定されることを特徴とする、請求項9記載の方法。
- 真空容器中の、特に極端紫外線および/または軟X線放射を生成する少なくとも一つの光源と、光線を処理されるべき被加工物へと導き、少なくとも部分的には前記光源によって導入される無機物質のために汚染されうる光学要素とを有する少なくとも一つの照射装置の少なくとも一つの光学要素を洗浄する装置であって、前記光学要素を汚染する付着物を除去するための供給装置が存在し、該供給装置は少なくとも一つの反応相手を支配的な反応条件に依存して導入し、該反応相手は前記光線に対して実質透過性または透明であり前記汚染付着物を液体または揮発性の反応生成物に転換するよう前記汚染付着物と化学反応を起こす、ことを特徴とし、ここで、前記反応相手は補給装置を通じて無機物質もしくは付着物またはその両方の導入された量に対して過剰な量、あるいは化学当量までの割合で供給される装置。
- 前記供給装置が冷却装置もしくはノズルまたはその両方を有することを特徴とする、請求項11記載の装置。
- 少なくとも一つの光学要素が加熱装置を有するか、あるいは洗浄対象でない真空系の要素が冷却されうるか、あるいはその両方であることを特徴とする、請求項11記載の装置。
- 真空容器中の、特に極端紫外線および/または軟X線放射を生成する少なくとも一つの光源と、光線を処理されるべき被加工物へと導き、少なくとも部分的には前記光源によって導入される無機物質のために汚染されうる光学要素とを有する少なくとも一つの照射装置の少なくとも一つの光学要素を洗浄する装置、特に請求項11ないし13のうちいずれか一項記載の装置であって、光源と集光器との間にフォイルトラップが配置されていることを特徴とする装置。
- 前記フォイルトラップまたは前記フォイルトラップの一部が回転させられうることを特徴とする、請求項14記載の装置。
- 固定または回転できる捕集器が前記回転できるフォイルトラップの縁のまわりに配置されていることを特徴とする、請求項15記載の装置。
- 洗浄が電子制御のもとに実行されうることを特徴とする、請求項14記載の装置。
- 当該光学要素の汚染度がいくつかの位置に配置された測定手段によって測定されうることを特徴とする、請求項17記載の装置。
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PCT/IB2004/050734 WO2004104707A2 (de) | 2003-05-22 | 2004-05-18 | Verfahren und vorrichtung zum reinigen mindestens einer optischen komponente |
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KR (1) | KR101095394B1 (ja) |
CN (1) | CN1791793B (ja) |
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2004
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- 2004-05-18 EP EP04733618.5A patent/EP1629268B1/de not_active Expired - Lifetime
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EP1629268A2 (de) | 2006-03-01 |
TW200510954A (en) | 2005-03-16 |
CN1791793A (zh) | 2006-06-21 |
US8945310B2 (en) | 2015-02-03 |
JP2006529057A (ja) | 2006-12-28 |
KR101095394B1 (ko) | 2011-12-16 |
CN1791793B (zh) | 2010-12-15 |
EP1629268B1 (de) | 2013-05-15 |
KR20060006841A (ko) | 2006-01-19 |
TWI373690B (en) | 2012-10-01 |
WO2004104707A2 (de) | 2004-12-02 |
WO2004104707A3 (de) | 2005-05-12 |
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