JP2013506308A - 反射光学素子及びeuvリソグラフィ装置を作動させる方法 - Google Patents
反射光学素子及びeuvリソグラフィ装置を作動させる方法 Download PDFInfo
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- JP2013506308A JP2013506308A JP2012531320A JP2012531320A JP2013506308A JP 2013506308 A JP2013506308 A JP 2013506308A JP 2012531320 A JP2012531320 A JP 2012531320A JP 2012531320 A JP2012531320 A JP 2012531320A JP 2013506308 A JP2013506308 A JP 2013506308A
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- Prior art keywords
- optical element
- reflective optical
- layer
- reflective
- fluoride
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Links
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- 238000000034 method Methods 0.000 title claims description 27
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Abstract
【選択図】図2a
Description
フッ化物からなる最上層を含む反射面を有する少なくとも1つの反射光学素子を設けるステップと、
原子状水素、水素分子(H2)、テトラフルオロメタン(CF4)等のパーフルオロアルカン、酸素、窒素、アルゴン、クリプトン、及びヘリウムから選択される少なくとも1つの洗浄ガスを添加するステップと
を含む方法により達成される。
11 ビーム整形系
12 EUV放射源
13a モノクロメータ
13b コリメータ
14 照明系
15 第1ミラー
16 第2ミラー
17 マスク
18 第3ミラー
19 第4ミラー
20 投影系
21 ウェーハ
22 洗浄ヘッド
23 洗浄ヘッド
50 反射光学素子
51 多層系
52 基板
53 層対
54 アブソーバ
55 スペーサ
56 保護層
57 バリア層
58 中間層
59 反射面
101 方法ステップ
103 方法ステップ
105 方法ステップ
107 方法ステップ
111 方法ステップ
113 方法ステップ
115 方法ステップ
117 方法ステップ
Claims (13)
- 反射面を有する極紫外線波長範囲用の反射光学素子であって、前記反射面(59)は金属フッ化物からなる最上層(56)を備える多層コーティングを有する反射光学素子において、
前記金属フッ化物は、フッ化ランタン、フッ化アルミニウム、氷晶石、及びチオライトからなる群から選択されることを特徴とする反射光学素子。 - 請求項1に記載の反射光学素子において、
前記多層コーティングは、前記最上層(56)の下に、モリブデン、ルテニウム、貴金属、ケイ素、酸化ケイ素、窒化ケイ素、炭化ホウ素、炭素化合物、及びそれらの組み合わせからなる群から選択される少なくとも1つの材料からなる中間層(58)を有することを特徴とする反射光学素子。 - 請求項1に記載の反射光学素子において、
前記多層コーティングは、前記最上層(56)の下に、窒化ケイ素、酸化ケイ素、窒化ホウ素、炭素、及び炭化物、特に炭化ホウ素からなる群から選択される少なくとも1つの材料からなるバリア層(57)を有することを特徴とする反射光学素子。 - 請求項2又は3に記載の反射光学素子において、
前記最上層(56)の下の前記中間層(58)又は前記バリア層(57)は、約0.1nm〜5nmの範囲の厚さを有することを特徴とする反射光学素子。 - 請求項1に記載の反射光学素子において、
前記反射面(59)の前記多層コーティングは、多層系(51)を備え、該多層系(51)は、交互のケイ素層及びモリブデン層(55,54)又は交互のケイ素層及びルテニウム層(55,54)に基づくことを特徴とする反射光学素子。 - 請求項1に記載の反射光学素子において、
前記最上層(56)は、約0.1nm〜2.5nmの範囲の厚さを有することを特徴とする反射光学素子。 - 反射面を有する反射光学素子を備えるEUVリソグラフィ装置を作動させる方法であって、
請求項1〜6のいずれか1項に記載の反射面を有する少なくとも1つの反射光学素子を設けるステップと、
原子状水素、水素分子、パーフルオロアルカン、酸素、窒素、アルゴン、クリプトン、及びヘリウムからからなる群から選択される少なくとも1つの洗浄ガスを添加するステップと
を含む方法。 - 請求項7に記載のEUVリソグラフィ装置を作動させる方法において、
洗浄ガスを活性化するエネルギーを、極紫外波長範囲の放射線の形態で及び/又はプラズマの点火により供給するステップ
をさらに含む方法。 - 請求項7又は8に記載の方法において、前記洗浄ガスの添加は、前記反射光学素子のフッ化物からなる最上層(56)の層厚が実質的に一定のままであるよう設定されることを特徴とする方法。
- 請求項7〜9のいずれか1項に記載の方法において、
前記洗浄ガスは、前記反射面にわたって可能な限り均一に添加されることを特徴とする方法。 - 請求項1〜6のいずれか1項に記載の反射光学素子を備えるEUVリソグラフィ装置。
- 特にEUVリソグラフィ装置用の、請求項1〜6のいずれか1項に記載の反射光学素子を備える照明系。
- 特にEUVリソグラフィ装置用の、請求項1〜6のいずれか1項に記載の反射光学素子を備える投影系。
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US24726909P | 2009-09-30 | 2009-09-30 | |
DE102009045170.6 | 2009-09-30 | ||
US61/247,269 | 2009-09-30 | ||
DE102009045170A DE102009045170A1 (de) | 2009-09-30 | 2009-09-30 | Reflektives optisches Element und Verfahren zum Betrieb einer EUV-Lithographievorrichtung |
PCT/EP2010/063694 WO2011039061A1 (en) | 2009-09-30 | 2010-09-17 | Reflective optical element and method for operating an euv lithography apparatus |
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US (1) | US20120250144A1 (ja) |
EP (1) | EP2483746A1 (ja) |
JP (1) | JP5349697B2 (ja) |
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KR101383464B1 (ko) | 2014-04-08 |
JP5349697B2 (ja) | 2013-11-20 |
US20120250144A1 (en) | 2012-10-04 |
KR20120058587A (ko) | 2012-06-07 |
EP2483746A1 (en) | 2012-08-08 |
DE102009045170A1 (de) | 2011-04-07 |
WO2011039061A1 (en) | 2011-04-07 |
CN102576196A (zh) | 2012-07-11 |
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