JP2020079199A - 極紫外線リソグラフィーに使用するためのガラス複合体 - Google Patents
極紫外線リソグラフィーに使用するためのガラス複合体 Download PDFInfo
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- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
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- C03B19/066—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction for the production of quartz or fused silica articles
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- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
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- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
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- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
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- G02B5/0891—Ultraviolet [UV] mirrors
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- 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
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/60—Substrates
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- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
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- C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
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- C03B2201/42—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn doped with titanium
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Abstract
【解決手段】ガラス複合体は、第1のシリカ・チタニアガラス部分を含む。そのガラス複合体は、第1のシリカ・チタニアガラス部分110の表面に機械的に結合された第2のドープされたシリカ・チタニアガラス部分120をさらに含み、その第2のドープされたシリカ・チタニアガラス部分の厚さは、約1.0インチ(約2.5cm)超である。
【選択図】図1
Description
極紫外線リソグラフィー(EUVL)に使用するためのガラス複合体であって、
第1のシリカ・チタニアガラス部分、および
前記第1のシリカ・チタニアガラス部分に機械的に結合された第2のドープされたシリカ・チタニアガラス部分、
を備え、前記第2のドープされたシリカ・チタニアガラス部分の厚さが約1.0インチ(約2.5cm)超である、ガラス複合体。
前記第1のシリカ・チタニアガラス部分が、約5.0質量%と約16質量%の間のチタニアを含む、実施形態1に記載のガラス複合体。
前記第1のシリカ・チタニアガラス部分のチタニアが、主にアナターゼである結晶形態を含む、実施形態1または2に記載のガラス複合体。
前記第2のドープされたシリカ・チタニアガラス部分が、約5.0質量%と約12質量%の間のチタニアを含む、実施形態1から3いずれか1つに記載のガラス複合体。
前記第2のドープされたシリカ・チタニアガラス部分が、約1.0質量%と約10.0質量%の間の少なくとも1種類のドーパントを含む、実施形態1から4いずれか1つに記載のガラス複合体。
前記少なくとも1種類のドーパントが、ホウ素、フッ素、塩素、リン、ヒドロキシル基およびそれらの混合物からなる群より選択される、実施形態5に記載のガラス複合体。
前記第2のドープされたシリカ・チタニアガラス部分が、約1.6ppb/K2未満の、20℃での温度に対する熱膨張係数(CTE)の勾配を含む、実施形態1から6いずれか1つに記載のガラス複合体。
前記第2のドープされたシリカ・チタニアガラス部分が、該第2のドープされたシリカ・チタニアガラス部分の表面に機械加工された湾曲を含む、実施形態1から7いずれか1つに記載のガラス複合体。
前記第1のシリカ・チタニアガラス部分が、前記結合されたガラス複合体の厚さの約50%と約95%の間を占める、実施形態1から8いずれか1つに記載のガラス複合体。
約20kgを超える質量を有する、実施形態1から9いずれか1つに記載のガラス複合体。
前記第1のシリカ・チタニアガラス部分および前記第2のドープされたシリカ・チタニアガラス部分がゼロに近いCTEを有する、実施形態1から10いずれか1つに記載のガラス複合体。
極紫外線リソグラフィー(EUVL)に使用するためのガラス複合体を形成する方法であって、
第1のシリカ・チタニアガラス部分を形成する工程、
第2のシリカ・チタニアガラス部分を形成する工程、
前記第2のシリカ・チタニアガラス部分をドープして、ドープされたシリカ・チタニアガラス部分を形成する工程、および
前記ドープされたシリカ・チタニアガラス部分を前記第1のシリカ・チタニアガラス部分の表面に機械的に結合する工程、
を有してなり、
前記ドープされたシリカ・チタニアガラス部分の厚さが、約1.0インチ(約2.5cm)超である方法。
前記第1のシリカ・チタニアガラス部分を熱処理して、主にアナターゼである結晶形態のチタニアを形成する工程をさらに含む、実施形態12に記載の方法。
前記第1のシリカ・チタニアガラス部分を熱処理する工程が、該第1のシリカ・チタニアガラス部分の熱膨張係数(CTE)および温度に対するCTEの勾配を変えて、前記ドープされたシリカ・チタニアガラス部分のCTEおよび温度に対するCTEの勾配に実質的に一致させる工程を含む、実施形態13に記載の方法。
前記ドープされたシリカ・チタニアガラス部分を徐冷する工程をさらに含む、実施形態12から14いずれか1つに記載の方法。
前記第2のシリカ・チタニアガラス部分を形成する工程が、スート粒子に加圧して、スート成形体を形成する工程を含む、実施形態12から15いずれか1つに記載の方法。
前記結合する工程が、前記ドープされたシリカ・チタニアガラス部分を前記第1のシリカ・チタニアガラス部分の表面に溶融結合させる工程を含む、実施形態12から16いずれか1つに記載の方法。
前記結合する工程が、前記ドープされたシリカ・チタニアガラス部分を前記第1のシリカ・チタニアガラス部分の表面にフリット結合させる工程を含む、実施形態12から16いずれか1つに記載の方法。
前記結合する工程が、前記ドープされたシリカ・チタニアガラス部分を前記第1のシリカ・チタニアガラス部分の表面に低温ゾル・ゲル結合させる工程を含む、実施形態12から16いずれか1つに記載の方法。
前記ドープされたシリカ・チタニアガラス部分の表面に湾曲反射面を形成する工程をさらに含む、実施形態12から19いずれか1つに記載の方法。
110 第1のガラス部分
120 第2のガラス部分
Claims (8)
- 極紫外線リソグラフィー(EUVL)に使用するためのガラス複合体であって、
約1質量%と約16質量%の間のチタニアを含む第1のシリカ・チタニアガラス部分、および
前記第1のシリカ・チタニアガラス部分に機械的に結合された、約1質量%と約14質量%の間のチタニアを含む第2のドープされたシリカ・チタニアガラス部分、
を備え、前記第2のドープされたシリカ・チタニアガラス部分の厚さが約1.0インチ(約2.5cm)超であって、
前記第1のシリカ・チタニアガラス部分のチタニアが、主にアナターゼである結晶形態を含み、前記第1のシリカ・チタニアガラス部分および前記第2のシリカ・チタニアガラス部分が、実質的に同じ長さおよび同じ幅を有し、
前記第2のドープされたシリカ・チタニアガラス部分が、約1.0質量%と約10.0質量%の間の少なくとも1種類のドーパントを含み、前記少なくとも1種類のドーパントが、ホウ素、塩素、ヒドロキシル基およびそれらの混合物から選択される、ガラス複合体。 - 前記第1のシリカ・チタニアガラス部分が、約5.0質量%と約16質量%の間のチタニアを含む、請求項1記載のガラス複合体。
- 前記第2のドープされたシリカ・チタニアガラス部分が、約5.0質量%と約12質量%の間のチタニアを含む、請求項1または2記載のガラス複合体。
- 前記第1のシリカ・チタニアガラス部分が、前記結合されたガラス複合体の厚さの約50%と約95%の間を占める、請求項1から3いずれか1項記載のガラス複合体。
- 極紫外線リソグラフィー(EUVL)に使用するためのガラス複合体を形成する方法であって、
第1のシリカ・チタニアガラス部分を形成する工程、
第2のシリカ・チタニアガラス部分を形成する工程、
前記第2のシリカ・チタニアガラス部分をドープして、ドープされたシリカ・チタニアガラス部分を形成する工程、および
前記ドープされたシリカ・チタニアガラス部分を前記第1のシリカ・チタニアガラス部分の表面に機械的に結合する工程、
を有してなり、
前記ドープされたシリカ・チタニアガラス部分の厚さが、約1.0インチ(約2.5cm)超であり、
前記第1のシリカ・チタニアガラス部分および前記第2のシリカ・チタニアガラス部分が、実質的に同じ長さおよび同じ幅を有し、前記第2のドープされたシリカ・チタニアガラス部分が、約1.0質量%と約10.0質量%の間の少なくとも1種類のドーパントを含み、前記少なくとも1種類のドーパントが、ホウ素、塩素、ヒドロキシル基およびそれらの混合物から選択される、方法。 - 前記第1のシリカ・チタニアガラス部分を熱処理して、主にアナターゼである結晶形態のチタニアを形成する工程をさらに含む、請求項5記載の方法。
- 前記第1のシリカ・チタニアガラス部分を熱処理する工程が、該第1のシリカ・チタニアガラス部分の熱膨張係数(CTE)および温度に対するCTEの勾配を変えて、前記ドープされたシリカ・チタニアガラス部分のCTEおよび温度に対するCTEの勾配に実質的に一致させる工程を含む、請求項6記載の方法。
- 前記ドープされたシリカ・チタニアガラス部分を徐冷する工程をさらに含む、請求項5から7いずれか1項記載の方法。
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| Publication number | Publication date |
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| WO2016154190A1 (en) | 2016-09-29 |
| US10427974B2 (en) | 2019-10-01 |
| US20180105452A1 (en) | 2018-04-19 |
| EP3274311A1 (en) | 2018-01-31 |
| JP7012761B2 (ja) | 2022-01-28 |
| JP2018513093A (ja) | 2018-05-24 |
| EP3274311B1 (en) | 2020-06-17 |
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