JP2013016872A - Euv光学器械 - Google Patents
Euv光学器械 Download PDFInfo
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- G—PHYSICS
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- 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
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- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
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- G—PHYSICS
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- 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
- G21K1/062—Devices having a multilayer structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
【解決手段】第1の態様では、複数の個別の基体を準備する段/段階と、各基体をそれぞれの多層コーティングで被覆する段/段階と、各基体が共通焦点に向けられた配置に被覆基体を固定する段/段階と、その後、多層コーティングの少なくとも1つを研磨する段/段階とを含むことができるEUV光源ミラーを製作する方法を開示する。別の態様では、基体と、Si、C、Si3N4、B4C、SiC、及びCrから成る材料の群から選択され、その層材料が高エネルギ堆積条件を用いて堆積された平滑化層と、多層誘電体コーティングとを含むことができるEUV光と共に使用するための光学器械を開示する。別の態様では、EUVミラーのための耐食多層コーティングは、Siと窒素及び第5周期遷移金属を有する複合材料との交互する層を含むことができる。
【選択図】図2
Description
本発明の開示は、例えば約50nm及びそれ未満の波長で例えば半導体集積回路製造フォトリソグラフィのためのEUV光源発生チャンバ外側での利用に向けて原材料から作り出され、集光されて焦点に導かれるプラズマからのEUV光を供給する超紫外線(EUV)光発生器に関する。
EUV光を生成する方法は、輝線がEUV範囲にある元素、例えば、キセノン、リチウム又は錫、インジウム、アンチモン、テルル、アルミニウムなどを有する材料をプラズマ状態に変換することを含むが必ずしもこれに限定されるわけではない。レーザ生成プラズマ(LPP)いうことが多い1つのこのような方法においては、所要のプラズマは、所要の線放出元素を有する材料の液滴、流れ、又はクラスターのようなターゲット材料をレーザビームで照射することにより生成することができる。
図1に示すように、光源20は、例えば、望ましいターゲット容積28に到達する液滴における誤差を補正するために液滴送達機構92からの原材料の放出点を修正するように、システムコントローラ60からの信号(一部の実施例では、上述の液滴誤差又はそこから導出した何らかの量を含むことができる)に応答して作動可能な液滴送達制御システム90を含むことができる、
多面ミラー1008から、光は、図10に示すように平面1004上へ集光ミラー1010により凝縮することができる。例えば、ミラー1010は、例えば、多層誘電体コーティング、例えば、Mo/Siコーティングを有する凹状EUV垂直入射ミラーとすることができる。図14は、平面1004、例えば、フォトマスク/レチクル平面での寸法決めされた円弧照明視野1028を示している。
106 精巧な面形状精度及び表面仕上げにする段階
108 多層コーティングで被覆する段階
Claims (16)
- ミラーアセンブリであって、
支持構造体と、
前記支持構造体上に取り付けられた第1のミラーの複数のセグメントであって、それぞれが基体及び当該基体上のEUV反射多層コーティングを有する第1のミラーの複数のセグメントと、
基体とEUV反射多層コーティングを有する第2のミラーのセグメントであって、前記支持構造体及び前記第1のミラーの複数のセグメントの少なくとも1つに対して移動可能に前記支持構造体上に取り付けられた第2のミラーのセグメントと、
を有することを特徴とするミラーアセンブリ。 - 前記第2のミラーのセグメント及び前記支持構造体に機械的に接続され、前記第2のミラーのセグメントを前記支持構造体に対して移動させるアクチュエータを更に含むことを特徴とする請求項1に記載のミラーアセンブリ。
- 前記アクチュエータは、電気作動可能要素からなることを特徴とする請求項2に記載のミラーアセンブリ。
- 前記第2のミラーのセグメントは変形可能であり、前記アクチュエータの作動によって前記第2のミラーのセグメントが変形されることを特徴とする請求項2に記載のミラーアセンブリ。
- 前記第2のミラーのセグメントは剛体であり、前記アクチュエータの作動によって前記第2のミラーのセグメントが平行移動されることを特徴とする請求項2に記載のミラーアセンブリ。
- 前記支持構造体は、Si−炭素繊維複合体、SiC、不変鋼又はステンレス鋼からなる群から選択される材料を含むことを特徴とする請求項1に記載のミラーアセンブリ。
- 前記第1のミラーのセグメント及び前記第2のミラーのセグメントのそれぞれは、前記基体と前記EUV反射多層コーティングとの間に平滑化層を有することを特徴とする請求項1に記載のミラーアセンブリ。
- 前記平滑化層は、Si、C、Si3N4、B4C、SiC、Crからなる群より選択され材料を含むことを特徴とする請求項7に記載のミラーアセンブリ。
- 前記平滑化層は、高エネルギ堆積条件を用いて前記基体上に堆積したものであることを特徴とする請求項7に記載のミラーアセンブリ。
- 前記高エネルギ堆積条件は、基体を100〜200度Cの範囲の温度に加熱することを含むことを特徴とする請求項9に記載のミラーアセンブリ。
- 前記高エネルギ堆積条件は、粒子エネルギ増大を含むことを特徴とする請求項9に記載のミラーアセンブリ。
- 前記平滑化層は、3nm〜100nmの範囲の厚さを有することを特徴とする請求項7に記載のミラーアセンブリ。
- 前記平滑化層は、アモルファス材料を含むことを特徴とする請求項7に記載のミラーアセンブリ。
- 前記EUV反射多層コーティングは複数の2層を含み、前記各2層は、
Siを含む第1の層と、
窒素及び第5周期遷移金属を有する複合材料を含む第2の層と、
を含むことを特徴とする請求項1に記載のミラーアセンブリ。 - 前記第5周期遷移金属は、Y、Zr、Nb、Mo、Ru、Rh、Pdからなる群から選択されたものであることを特徴とする請求項14に記載のミラーアセンブリ。
- 前記複合材料は、窒化物であることを特徴とする請求項14に記載のミラーアセンブリ。
Applications Claiming Priority (2)
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|---|---|---|---|
| US11/505,177 US7843632B2 (en) | 2006-08-16 | 2006-08-16 | EUV optics |
| US11/505,177 | 2006-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009524601A Division JP2010500776A (ja) | 2006-08-16 | 2007-07-24 | Euv光学器械 |
Publications (2)
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| JP2013016872A true JP2013016872A (ja) | 2013-01-24 |
| JP5667615B2 JP5667615B2 (ja) | 2015-02-12 |
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| JP2009524601A Pending JP2010500776A (ja) | 2006-08-16 | 2007-07-24 | Euv光学器械 |
| JP2012234751A Expired - Fee Related JP5667615B2 (ja) | 2006-08-16 | 2012-10-24 | Euv光学器械 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
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| JP2009524601A Pending JP2010500776A (ja) | 2006-08-16 | 2007-07-24 | Euv光学器械 |
Country Status (5)
| Country | Link |
|---|---|
| US (3) | US7843632B2 (ja) |
| JP (2) | JP2010500776A (ja) |
| KR (2) | KR20130119012A (ja) |
| TW (2) | TWI489155B (ja) |
| WO (1) | WO2008020965A2 (ja) |
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| KR20160012830A (ko) * | 2014-07-25 | 2016-02-03 | 삼성전기주식회사 | 적층 세라믹 전자부품 |
| JP2021002068A (ja) * | 2014-12-18 | 2021-01-07 | エーエスエムエル ネザーランズ ビー.ブイ. | ファセット付きeuv光学素子 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010500776A (ja) | 2010-01-07 |
| US8907310B2 (en) | 2014-12-09 |
| TWI367611B (en) | 2012-07-01 |
| JP5667615B2 (ja) | 2015-02-12 |
| US20110075253A1 (en) | 2011-03-31 |
| WO2008020965A3 (en) | 2008-10-16 |
| TWI489155B (zh) | 2015-06-21 |
| US20140176926A1 (en) | 2014-06-26 |
| WO2008020965A2 (en) | 2008-02-21 |
| KR20090040434A (ko) | 2009-04-24 |
| TW200820526A (en) | 2008-05-01 |
| KR20130119012A (ko) | 2013-10-30 |
| US8598549B2 (en) | 2013-12-03 |
| US20080043321A1 (en) | 2008-02-21 |
| TW201213892A (en) | 2012-04-01 |
| US7843632B2 (en) | 2010-11-30 |
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