JP6895600B2 - 現像可能な底部反射防止コーティングおよび着色インプラントレジストのための化学増幅方法および技術 - Google Patents
現像可能な底部反射防止コーティングおよび着色インプラントレジストのための化学増幅方法および技術 Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/0271—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers
- H01L21/0273—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers characterised by the treatment of photoresist layers
- H01L21/0274—Photolithographic processes
- H01L21/0276—Photolithographic processes using an anti-reflective coating
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- G—PHYSICS
- 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
- 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
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/091—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers characterised by antireflection means or light filtering or absorbing means, e.g. anti-halation, contrast enhancement
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- G—PHYSICS
- 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
- 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
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/11—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having cover layers or intermediate layers, e.g. subbing layers
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- G—PHYSICS
- 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
- 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
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2022—Multi-step exposure, e.g. hybrid; backside exposure; blanket exposure, e.g. for image reversal; edge exposure, e.g. for edge bead removal; corrective exposure
- G03F7/203—Multi-step exposure, e.g. hybrid; backside exposure; blanket exposure, e.g. for image reversal; edge exposure, e.g. for edge bead removal; corrective exposure comprising an imagewise exposure to electromagnetic radiation or corpuscular radiation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/0271—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers
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Description
本出願は、2014年2月25日に出願された“Chemical Amplification Methods and Techniques for Developable Bottom Anti−reflective Coatings and Dyed Implant Resists”という名称の米国仮特許出願第61/944,394号明細書の利益を主張し、その全体が参照により本明細書に援用される。
1)ポリアミド酸(polyamic acid)誘導体などの等方性現像を示す非感光性(non-photosensitive)現像液可溶性系。
2)メタクリル酸ベンジル(BMA)およびメバロン酸(mevalonic)ラクトンメタクリレート(MLMA)などの溶解性を得る(develop)ための感光性開裂反応を開始する感光性DBARC、またはヒドロキシル含有ポリマーを有するビニロジー(vinylozy)材料などの可溶性を得る(develop)ための架橋/脱架橋反応を開始する感光性DBARC。
3)光酸発生剤なし(PAGなし)のDBARCにおけるフォトレジスト誘導現像挙動。この第3の方法において、DBARCは、本来感光性ではなく、現像のための露光したフォトレジストからの光酸の拡散に依存する。あるいは、酸増幅技術をフォトレジストに適用することもでき、特許請求の範囲はDBARC用途に限定されるものではない。
206 前記下層上にフォトレジスト層を堆積するステップであって、フォトレジストが、第1の光波長活性化閾値と第1の光波長活性化閾値とを含む、ステップ
208 パターン化マスクを通して第1の光波長を前記基板上に露光するステップ
210 第2の光波長を前記基板上に露光するステップ
212 前記基板上の前記フォトレジスト層を現像するステップ
304 下層(underlying layer)と、反射防止コーティング(ARC)層と、フォトレジスト層と、を含む基板を受け取るステップ
306 パターン化マスクを通して第1の光波長を前記基板上に露光するステップ(FIG.3Bのブロック308に続く)
308 (FIG.3Aのブロック306からの続き)第2の光波長を前記基板上に露光するステップ
310 前記フォトレジスト層と前記ARC層とを現像するステップ
Claims (10)
- 基板を処理する方法であって:
前記基板の表面上の下層と、前記下層上の反射防止コーティング(ARC)層と、前記ARC層上のフォトレジスト層と、を含む前記基板を受け取るステップであって、ここで、前記ARC層が感光性化学増幅レジスト(PS−CAR)組成物を含み、ここで、前記PS−CAR組成物が、:
アセトフェノン;
トリフェニレン;
ベンゾフェノン;
フルオレノン(flourenone);
アントラキノン;
フェナントレン;または
それらの誘導体;
を含む、光増感剤発生化合物と;
トリフェニルスルホニウムトリフレート、トリフェニルスルホニウムノナフレート、パーフルオロオクチルスルホン酸トリフェニルスルホニウム、トリアリールスルホニウムトリフレート、トリアリールスルホニウムノナフレート、パーフルオロオクチルスルホン酸トリアリールスルホニウム、トリフェニルスルホニウム塩、トリアリールスルホニウム塩、ヘキサフルオロアンチモン酸トリアリールスルホニウム塩、N−ヒドロキシナフタルイミドトリフレート、1,1−ビス[p−クロロフェニル]−2,2,2−トリクロロエタン(DDT)、1,1−ビス[p−メトキシフェニル]−2,2,2−トリクロロエタン、1,2,5,6,9,10−ヘキサブロモシクロドデカン、1,10−ジブロモデカン、1,1−ビス[p−クロロフェニル]2,2−ジクロロエタン、4,4−ジクロロ−2−(トリクロロメチル)ベンズヒドロール、1,1−ビス(クロロフェニル)2,2,2−トリクロロエタノール、ヘキサクロロジメチルスルホン、2−クロロ−6−(トリクロロメチル)ピリジン、またはそれらの誘導体の少なくとも1つを含む、光酸発生化合物と;
を含む、ステップと;
第1の光波長で前記基板上に第1の露光を行うステップであって、前記第1の露光が前記基板のパターニング露光であり、前記第1の露光が前記ARC層中に酸の第1の濃度を生成し、ここで、前記PS−CAR組成物は、前記ARC層において第1の酸濃度に酸の生成を制御するために、前記第1の光波長に曝露されるように構成される、ステップと;
第2の光波長で前記基板上に第2の露光を行うステップであって、前記第2の露光が前記基板のブランケット露光であり、前記第2の露光が前記ARC層中に前記酸の第2の濃度を生成し、前記第2の濃度が前記第1の濃度よりも高く、ここで、前記PS−CAR組成物は、前記ARC層において第2の酸濃度に酸の生成を制御するために、前記第2の光波長に曝露されるように構成され、前記第2の光波長が前記第1の光波長と異なる、ステップと;
前記ARC層において、前記パターニング露光と位置合わせされた1つ以上の開口部を生じさせるため、前記反射防止コーティング層を現像するステップと;
を含む、方法。 - 前記第2の光波長での前記第2の露光が、上部界面波長と、前記ARC層と前記下層との間の界面におけるよりも、前記ARC層と前記フォトレジスト層との間の界面の近傍で前記酸のより高い濃度を可能にする上部界面線量と、を含む、請求項1に記載の方法。
- 前記上部界面波長が300nm〜400nmの大きさを含み、かつ前記上部界面線量が0.1J/cm2〜4J/cm2の大きさを含む、請求項2に記載の方法。
- 前記第2の光波長での前記第2の露光が、下部界面波長と、前記ARC層と前記フォトレジスト層との間の界面におけるよりも、前記ARC層と前記下層との間の界面の近傍で前記酸のより高い濃度を可能にする下部界面線量と、を含む、請求項1に記載の方法。
- 前記下部界面波長が300nm〜400nmの大きさを含み、かつ前記下部界面線量が0.1J/cm2〜4J/cm2の大きさを含む、請求項4に記載の方法。
- 前記ARC層が、上部界面屈折率を、または、前記ARC層と前記下層との界面におけるよりも、前記ARC層と前記フォトレジスト層との界面により近くで、より強い光干渉を発生させる発色団化合物を、含む、請求項1に記載の方法。
- 前記ARC層が、下部界面屈折率を、または、前記ARC層と前記フォトレジスト層との界面におけるよりも、前記ARC層と前記下層との界面により近くで、より強い光干渉を発生させる発色団化合物を、含む、請求項1に記載の方法。
- 現像液可溶性底部反射防止コーティング(DBARC)がメタクリル酸ベンジルまたはメバロン酸ラクトンメタクリレートを含む、請求項1に記載の方法。
- 前記ARC層が30nm〜120nmの厚さを含む、請求項1に記載の方法。
- 前記フォトレジスト層が30nm〜60nmまたは80nm〜250nmの厚さを含む、請求項1に記載の方法。
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US201461944394P | 2014-02-25 | 2014-02-25 | |
US61/944,394 | 2014-02-25 | ||
PCT/US2015/017353 WO2015130695A1 (en) | 2014-02-25 | 2015-02-24 | Chemical Amplification Methods and Techniques for Developable Bottom Anti-reflective Coatings and Dyed Implant Resists |
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JP2019146060A Division JP7074990B2 (ja) | 2014-02-25 | 2019-08-08 | 現像可能な底部反射防止コーティングおよび着色注入レジストのための化学増幅方法および技術 |
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JP2019146060A Active JP7074990B2 (ja) | 2014-02-25 | 2019-08-08 | 現像可能な底部反射防止コーティングおよび着色注入レジストのための化学増幅方法および技術 |
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KR (1) | KR102402422B1 (ja) |
DE (1) | DE112015000546T5 (ja) |
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