JP5406602B2 - 多層ミラー及びリソグラフィ装置 - Google Patents
多層ミラー及びリソグラフィ装置 Download PDFInfo
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- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
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- 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
- G03F7/70216—Mask projection systems
- G03F7/70308—Optical correction elements, filters or phase plates for manipulating imaging light, e.g. intensity, wavelength, polarisation, phase or image shift
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- 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
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- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
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- 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
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- 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
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- G03F7/70008—Production of exposure light, i.e. light sources
- G03F7/70033—Production of exposure light, i.e. light sources by plasma extreme ultraviolet [EUV] sources
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- 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
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- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
- G03F7/7055—Exposure light control in all parts of the microlithographic apparatus, e.g. pulse length control or light interruption
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- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
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Description
Aを正確に位置決めできる。一般に、マスク・テーブルMTの移動は、第1位置決め装置PMの一部を形成する(粗い位置決め用の)長ストローク・モジュール及び(精密位置決め用の)短ストローク・モジュールを使用して実現できる。同様に、基板テーブルWTの移動は、第2位置決め装置PWの一部を形成する長ストローク・モジュール及び短ストローク・モジュールを使用して実現できる。スキャナと異なり、ステッパの場合には、マスク・テーブルMTを短ストローク・アクチュエータだけに連結することもできるし、或いは固定することもできる。マスクMA及び基板Wは、マスク位置調整用マークM1、M2及び基板位置調整用マークP1、P2を使用して位置調整できる。図に示す基板位置調整用マークは、専用の目標部分を占めているが、これらは、目標部分間の領域に配置できる(これらは、スクライブ・レーン位置調整用マークとして知られている)。同様に、マスクMAに2つ以上のダイが設けられる状況では、マスク位置調整用マークは、これらのダイとダイの間に配置できる。
2.スキャン・モードでは、マスク・テーブルMTと基板テーブルWTを同期走査しながら、放射ビームに付与されたパターンを目標部分Cに投影する(即ち、1回の動的な露光)。マスク・テーブルMTに対する相対的な基板テーブルWTの速度及び方向は、投影系PSの倍率(縮小率)及び像の反転特性によって決めることができる。スキャン・モードでは、露光フィールドの最大サイズが、1回の動的な露光における目標部分の(非走査方向の)幅を制限し、走査移動長により、目標部分の(走査方向の)高さが決まる。
3.別のモードでは、マスク・テーブルMTを本質的に固定してプログラム可能なパターン化装置を保持したまま、基板テーブルWTを移動又は走査しながら、放射ビームに付与されたパターンを目標部分Cに投影する。このモードでは一般に、パルス化された放射源を使用し、基板テーブルWTの各移動動作後に、或いは走査中に連続放射パルス間で、プログラム可能なパターン化装置を必要に応じて更新する。この動作モードは、上記で言及したタイプのプログラム可能なミラー配列などのプログラム可能なパターン化装置を利用するマスクレス・リソグラフィに容易に適用できる。
r1=t12・t21・r23・exp(i・2・K2・t) (2)
空気 N1=1
Si3N4 N2=2.62+0.174×j
a−Si N3=1.028+2.1716981×j
である。
103 多層積層体上部層
104 スペクトル・フィルタ上部層
105 キャップ層
110 第1スペクトル純度増強層
111 中間層
112 第2スペクトル純度増強層
Claims (12)
- 多層ミラーであって、
多層積層体上部層を伴う複数の交互層を含む多層積層体と、
前記多層積層体上部層上に配置されたスペクトル・フィルタ上部層とを備え、
前記スペクトル・フィルタ上部層が、
第1の材料を含む、第1の層の厚さd1を有する第1スペクトル純度増強層と、
第2の材料を含む、第2の層の厚さd2を有する中間層と、
第3の材料を含む、第3の層の厚さd3を有する、前記多層積層体上部層上に直接配置された第2スペクトル純度増強層とのみを含み、
前記第1の材料が、SiN、Si3N4、SiO2、ZnS、Te、ダイヤモンド、CsI、Se、SiC、アモルファス・カーボン、MgF2、CaF2、TiO2、Ge、PbF2、ZrO2、BaTiO3、LiF、又はNaFから選択され、
前記第3の材料が、Si3N4、SiO2、ZnS、Te、ダイヤモンド、CsI、Se、SiC、アモルファス・カーボン、MgF2、CaF2、TiO2、Ge、PbF2、ZrO2、BaTiO3、LiF、又はNaFから選択され、
前記第2の材料が、前記第1及び第3の材料とは異なる材料を含み、厚さd1+d2+d3が2.5〜40nmである、多層ミラー。 - 前記スペクトル・フィルタ上部層が、前記第1スペクトル純度増強層の上にキャップ層をさらに含み、前記キャップ層が、Ru、BN、B4C、B、C、TiN、Pd、Rh、Au、C2F4、SiN、Si3N4、SiC、MgF2、又はLiFから選択される第4の材料を含む、請求項1に記載された多層ミラー。
- 前記スペクトル・フィルタ上部層が、前記第1スペクトル純度増強層の上に、Ruを含む、0.5〜2.5nmの第4の層の厚さd4を有するキャップ層をさらに含む、請求項1に記載された多層ミラー。
- 前記中間層が金属を含む、請求項1乃至3のいずれかに記載された多層ミラー。
- 前記第2の材料が、Be、B、C、Si、P、S、K、Ca、Sc、Br、Rb、Sr、Y、Zr、Nb、Mo、Ba、La、Ce、Pr、Pa、又はUから選択される、請求項1乃至3のいずれかに記載された多層ミラー。
- 前記第1及び第2のスペクトル純度増強層はそれぞれ独立に、nを複素屈折率の実数部とすると、複素屈折率の虚数部がk≦0.25n+1.07であり、前記複素屈折率は100〜400nmの範囲から選択された放射波長における複素屈折率である、請求項1乃至5のいずれかに記載された多層ミラー。
- 前記第1及び第2のスペクトル純度増強層はそれぞれ独立に、複素屈折率の実数部が2以上であり、前記複素屈折率の虚数部が1.6以下である、請求項1乃至5のいずれかに記載された多層ミラー。
- 垂直入射ミラーである、請求項1乃至7のいずれかに記載された多層ミラー。
- 5〜20nmの第1波長範囲から選択される波長の放射を反射するように構成された垂直入射ミラーである、請求項8に記載された多層ミラー。
- 12〜15nmの波長範囲から選択される波長の放射を反射するように構成された垂直入射Si/Mo多層ミラーである、請求項8に記載された多層ミラー。
- 前記第1及び第3の材料がSi3N4を含み、各層の厚さが1.5〜3.5nmであり、
前記第2の材料がMoを含み、層の厚さが1〜3nmである、請求項1に記載された多層ミラー。 - 請求項1乃至11のいずれかに記載の多層ミラーを備えるリソグラフィ装置。
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US20060245058A1 (en) | 2006-11-02 |
US7706057B2 (en) | 2010-04-27 |
US20080316595A1 (en) | 2008-12-25 |
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ATE553403T1 (de) | 2012-04-15 |
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EP2261698B1 (en) | 2013-03-20 |
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US7336416B2 (en) | 2008-02-26 |
US20060245057A1 (en) | 2006-11-02 |
US8139200B2 (en) | 2012-03-20 |
US20100149512A1 (en) | 2010-06-17 |
EP1717609A1 (en) | 2006-11-02 |
US7463413B2 (en) | 2008-12-09 |
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