JP2011527416A - 反射性光学素子およびその製造方法 - Google Patents
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Abstract
【選択図】図2b
Description
2 多層系
3 基板
4 保護層
20 周期的に繰り返されるスタックの層
21 スペーサ
22,22 吸収体
23 窒化物または炭化物層
24 窒化物または炭化物層
100 EUVリソグラフィ装置
110 ビーム整形システム
111 放射源
112 集光ミラー
113 モノクロメータ
120 照射システム
121,122 ミラー
130 フォトマスク
140 投影システム
141,142 ミラー
150 ウエハ
201−207 方法ステップ
301−307 方法ステップ
Claims (23)
- 動作波長を5nm〜12nmの範囲内とした反射性光学素子であって、
前記動作波長において屈折率の実部が異なる少なくとも2つの材料を交互に積層された多層系を含む反射性光学素子において、
少なくとも、屈折率の実部が大きい前記材料(21)から屈折率の実部が小さい前記材料(22)への界面、または、屈折率の実部が小さい前記材料(22)から屈折率の実部が大きい前記材料(21)への界面において、屈折率の実部が小さい前記材料の窒化物または炭化物で形成したさらなる層(23)を配置したこと、を特徴とする反射性光学素子。 - 請求項1に記載の反射性光学素子であって、
少なくとも、屈折率の実部が大きい前記材料(21)から屈折率の実部が小さい前記材料(22)への界面において、屈折率の実部が小さい前記材料の窒化物で形成したさらなる層(23)を配置したこと、を特徴とする反射性光学素子。 - 請求項1または2に記載の反射性光学素子であって、
屈折率の実部が小さい前記材料(22)は、ランタン、トリウム、またはウランであること、を特徴とする反射性光学素子。 - 請求項1〜3のいずれか一項に記載の反射性光学素子であって、
少なくとも、屈折率の実部が小さい前記材料(22)から屈折率の実部が大きい前記材料(21)への界面において、屈折率の実部が大きい前記材料の窒化物または炭化物で形成したさらなる層(24)を配置したこと、を特徴とする反射性光学素子。 - 請求項1〜4のいずれか一項に記載の反射性光学素子であって、
屈折率の実部が大きい前記材料(21)は、ホウ素または炭化ホウ素であること、を特徴とする反射性光学素子。 - 請求項1〜5のいずれか一項に記載の反射性光学素子であって、炭化物または窒化物で形成した前記層(23,24)の厚さは0.7nm以下であること、を特徴とする反射性光学素子。
- 請求項1〜6のいずれか一項に記載の反射性光学素子であって、炭化物または窒化物で形成した前記層(23,24)は単分子層として構成されること、を特徴とする反射性光学素子。
- 動作波長を5nm〜12nmの範囲内とした反射性光学素子であって、
前記動作波長において屈折率の実部が異なる少なくとも2つの材料を交互に積層された多層系を含む反射性光学素子において、
屈折率の実部が小さい前記材料(22’)は窒化物または炭化物であること、を特徴とする反射性光学素子。 - 請求項8に記載の反射性光学素子であって、
屈折率の実部が小さい前記材料(22’)は窒化ランタン、窒化トリウム、炭化ランタン、または炭化トリウムであること、を特徴とする反射性光学素子。 - 請求項8または9に記載の反射性光学素子であって、
屈折率の実部が大きい前記材料(21)は、ホウ素または炭化ホウ素であること、を特徴とする反射性光学素子。 - 動作波長を5nm〜12nmの範囲内とした反射性光学素子であって、
前記動作波長において屈折率の実部が異なる少なくとも2つの材料が交互に積層された多層系を含む反射性光学素子において、
屈折率の実部が小さい前記材料(22)は、トリウム、ウラン、またはバリウムであり、屈折率の実部が大きい前記材料(21)は、ホウ素または炭化ホウ素であること、を特徴とする反射性光学素子。 - 請求項1〜11のいずれか一項に記載の反射性光学素子の使用方法であって、20℃〜600℃の動作温度において、波長域が5nm〜12nmである放射線の反射に該反射性光学素子を使用する、使用方法。
- 請求項1〜11のいずれか一項に記載の反射性光学素子の使用方法であって、EUVリソグラフィ装置において、波長域が5nm〜12nmである放射線の集光器として該反射性光学素子を使用する、使用方法。
- 投影システム(120)、特に、EUVリソグラフィ装置のための投影システムであって、請求項1〜11に記載の反射性光学素子(121,122)のうちの少なくとも1つを備える投影システム。
- 照射システム(140)、特に、EUVリソグラフィ装置のための照射システムであって、請求項1〜11に記載の反射性光学素子(141,142)のうちの少なくとも1つを備える投影システム。
- ビーム整形システム(110)、特に、EUVリソグラフィ装置のためのビーム整形システムであって、請求項1〜11に記載の反射性光学素子(112,113)のうちの少なくとも1つを備えるビーム整形システム。
- EUVリソグラフィ装置(100)であって、
請求項1〜11に記載の反射性光学素子(112,113,121,122,141,142)のうちの少なくとも1つを備えるEUVリソグラフィ装置。 - 請求項1〜11に記載の反射性光学素子の製造方法であって、少なくとも1つの材料で形成した複数の層をプラズマベースの処理により塗布すること、を特徴とする製造方法。
- 請求項18に記載の製造方法であって、まず反射率の実部が小さい材料の層を塗布し、続いて該層を窒素含有プラズマまたは炭素含有プラズマで露光すること、を特徴とする製造方法。
- 請求項18に記載の製造方法であって、屈折率の実部が小さい前記材料の層を塗布することの少なくとも一部分は、窒素含有プラズマまたは炭素含有プラズマを用いて行うこと、を特徴とする製造方法。
- 請求項19または20に記載の製造方法であって、窒素原子または炭素原子、窒素ラジカルまたは炭素ラジカル、または窒素粒子または炭素粒子を用い、そのエネルギーを調整して、窒化物または炭化物の自己終端層を形成すること、を特徴とする製造方法。
- 請求項19または20に記載の製造方法であって、窒素原子または炭素原子、窒素ラジカルまたは炭素ラジカル、または窒素粒子または炭素粒子を用い、そのエネルギーを調整して、窒化物または炭化物の単分子層を形成すること、を特徴とする製造方法。
- 請求項19または20に記載の製造方法であって、窒素原子または炭素原子、窒素ラジカルまたは炭素ラジカル、または窒素粒子または炭素粒子を用い、そのエネルギーを120eV以下とすること、を特徴とする製造方法。
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PCT/EP2009/003905 WO2010003487A1 (de) | 2008-07-09 | 2009-05-30 | Reflektives optisches element und verfahren zu seiner herstellung |
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DE102008040265A1 (de) | 2010-01-14 |
CN102089683B (zh) | 2014-02-26 |
US8411355B2 (en) | 2013-04-02 |
CN102089683A (zh) | 2011-06-08 |
KR101722363B1 (ko) | 2017-03-31 |
KR101626388B1 (ko) | 2016-06-01 |
KR20110041505A (ko) | 2011-04-21 |
EP2304479B1 (de) | 2017-07-19 |
KR20160067190A (ko) | 2016-06-13 |
EP2304479A1 (de) | 2011-04-06 |
JP5770627B2 (ja) | 2015-08-26 |
WO2010003487A1 (de) | 2010-01-14 |
KR20170038086A (ko) | 2017-04-05 |
KR101825336B1 (ko) | 2018-02-02 |
US20110194087A1 (en) | 2011-08-11 |
US8638494B2 (en) | 2014-01-28 |
US20130188248A1 (en) | 2013-07-25 |
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