JP6325464B2 - 現像液及びこれを用いたパターン形成方法 - Google Patents
現像液及びこれを用いたパターン形成方法 Download PDFInfo
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- 0 CCC(CC(C)C)*C(C)(*)C(OC(*)(**)**Cl)=O Chemical compound CCC(CC(C)C)*C(C)(*)C(OC(*)(**)**Cl)=O 0.000 description 22
- OTAFHZMPRISVEM-UHFFFAOYSA-N O=C1c(cccc2)c2OC=C1 Chemical compound O=C1c(cccc2)c2OC=C1 OTAFHZMPRISVEM-UHFFFAOYSA-N 0.000 description 2
- CWRYPZZKDGJXCA-UHFFFAOYSA-N C(C1)c2cccc3c2c1ccc3 Chemical compound C(C1)c2cccc3c2c1ccc3 CWRYPZZKDGJXCA-UHFFFAOYSA-N 0.000 description 1
- WVXCFDNBTHDITD-UHFFFAOYSA-N CC(C(OC(C1)OCOC1(C(F)(F)F)O)=O)=C Chemical compound CC(C(OC(C1)OCOC1(C(F)(F)F)O)=O)=C WVXCFDNBTHDITD-UHFFFAOYSA-N 0.000 description 1
- YGCZFFRWBTUYMR-UHFFFAOYSA-N CC(C1(F)F)(OC(C(C)=C)=O)OCOC1(C(F)(F)F)O Chemical compound CC(C1(F)F)(OC(C(C)=C)=O)OCOC1(C(F)(F)F)O YGCZFFRWBTUYMR-UHFFFAOYSA-N 0.000 description 1
- TWQXASWVQWKAIM-UHFFFAOYSA-N CC(COC(C(C)=C)=O)(C1(F)F)OCOC1(C(F)(F)F)O Chemical compound CC(COC(C(C)=C)=O)(C1(F)F)OCOC1(C(F)(F)F)O TWQXASWVQWKAIM-UHFFFAOYSA-N 0.000 description 1
- ABYXLSPPPNXLTQ-UHFFFAOYSA-N COC(C1=CC2C=CC1C2)=O Chemical compound COC(C1=CC2C=CC1C2)=O ABYXLSPPPNXLTQ-UHFFFAOYSA-N 0.000 description 1
- DUOCJYJXOPFLIX-UHFFFAOYSA-N COC(C=C1)=CC=CC(C=C2)=C1OC2=O Chemical compound COC(C=C1)=CC=CC(C=C2)=C1OC2=O DUOCJYJXOPFLIX-UHFFFAOYSA-N 0.000 description 1
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N O=C1Oc(cccc2)c2C=C1 Chemical compound O=C1Oc(cccc2)c2C=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 1
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- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/32—Liquid compositions therefor, e.g. developers
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- C07C219/04—Compounds containing amino and esterified hydroxy groups bound to the same carbon skeleton having esterified hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated
- C07C219/16—Compounds containing amino and esterified hydroxy groups bound to the same carbon skeleton having esterified hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having at least one of the hydroxy groups esterified by an inorganic acid or a derivative thereof
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- C07C381/00—Compounds containing carbon and sulfur and having functional groups not covered by groups C07C301/00 - C07C337/00
- C07C381/12—Sulfonium compounds
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- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1818—C13or longer chain (meth)acrylate, e.g. stearyl (meth)acrylate
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/20—Esters of polyhydric alcohols or phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
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- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/22—Esters containing halogen
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- C—CHEMISTRY; METALLURGY
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- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/38—Esters containing sulfur
- C08F220/382—Esters containing sulfur and containing oxygen, e.g. 2-sulfoethyl (meth)acrylate
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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
- G03F7/004—Photosensitive materials
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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
- G03F7/004—Photosensitive materials
- G03F7/0045—Photosensitive materials with organic non-macromolecular light-sensitive compounds not otherwise provided for, e.g. dissolution inhibitors
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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
- G03F7/004—Photosensitive materials
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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
- G03F7/004—Photosensitive materials
- G03F7/039—Macromolecular compounds which are photodegradable, e.g. positive electron resists
- G03F7/0392—Macromolecular compounds which are photodegradable, e.g. positive electron resists the macromolecular compound being present in a chemically amplified positive photoresist composition
- G03F7/0397—Macromolecular compounds which are photodegradable, e.g. positive electron resists the macromolecular compound being present in a chemically amplified positive photoresist composition the macromolecular compound having an alicyclic moiety in a side chain
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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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
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2041—Exposure; Apparatus therefor in the presence of a fluid, e.g. immersion; using fluid cooling means
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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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/32—Liquid compositions therefor, e.g. developers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/32—Liquid compositions therefor, e.g. developers
- G03F7/325—Non-aqueous compositions
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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
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- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
Description
パターンの微細化の進行と共に、酸の拡散による像のぼけが問題になっている。寸法サイズ45nm以降の微細パターンでの解像性を確保するためには、従来提案されている溶解コントラストの向上だけでなく、酸拡散の制御が重要であることが提案されている。しかしながら、化学増幅型レジスト材料は、酸の拡散によって感度とコントラストを上げているため、ポストエクスポージャベーク(PEB)温度や時間を短くして酸拡散を極限まで抑えようとすると感度とコントラストが著しく低下する。酸不安定基の種類と酸拡散距離とは密接な関係があり、極めて短い酸拡散距離で脱保護反応が進行する酸不安定基の開発が望まれている。
(現像液の調製)
表1に示される組成で現像液1〜4を調製した。
通常のラジカル重合で得られた下記レジスト用ポリマー、光酸発生剤(PAG)、クエンチャー、及び界面活性剤を用いて、表2に示される組成で溶剤に溶解させた溶液を、0.2μmサイズのフィルターで濾過してポジ型レジスト材料1〜5を調製した。
PGME:プロピレングリコールモノメチルエーテル
FC−4430:フッ素系界面活性剤、住友3M社製
上記のようにして調製したポジ型レジスト材料1〜5を直径4インチ(100nm)のSi基板上に膜厚35nmで積層された珪素含有SOG膜SHB−A940(信越化学工業(株)製)上に塗布し、ホットプレート上で、110℃で60秒間プリベークして35nmのレジスト膜を作製した。NA0.3、Pseudo PSM(位相シフトマスク)を使ってEUV露光し、表3に記載の温度条件でPEBを行い、上記のようにして調製した現像液1〜4、TMAH水溶液、又はTBAH水溶液で20秒間ベークし、リンス後スピンドライしてレジストパターンを形成した。20nmラインアンドスペースを形成している感度とこの時に解像している最小寸法の限界解像度と、エッジラフネス(LWR)をSEM(走査型電子顕微鏡)にて測定した。リンス液としては、純水又はExtreme10(AZエレクトロニックマテリアルズ(株)製)を用いた。結果を表3に示す。ここで、限界解像度はパターン倒れによって決まっており、限界解像度が高い場合(限界解像度の値が小さい)程、パターン倒れやブリッジ欠陥が起きにくいということを示している。
TBAH:テトラブチルアンモニウムヒドロキシド
Claims (11)
- 前記一般式(1)で示される化合物は、前記現像液全体に対して0.1〜20質量%含有されるものであることを特徴とする請求項1に記載の現像液。
- 前記一般式(1)で示される化合物が、ヘキサメトニウムヒドロキシド又はデカメトニウムヒドロキシドであることを特徴とする請求項1又は請求項2に記載の現像液。
- 感光性レジスト材料を基板上に塗布する工程と、加熱処理後、高エネルギー線で露光する工程と、請求項1から請求項4のいずれか1項に記載の現像液を用いて現像する工程とを含むことを特徴とするパターン形成方法。
- 前記感光性レジスト材料として、酸によってアルカリ溶解速度が向上する化学増幅ポジ型レジスト材料を用いることを特徴とする請求項5に記載のパターン形成方法。
- 前記化学増幅ポジ型レジスト材料のベース樹脂として、酸不安定基を有する繰り返し単位と、ヒドロキシ基及び/又はラクトン環を密着性基として有する繰り返し単位とを含む高分子化合物を用いることを特徴とする請求項6に記載のパターン形成方法。
- 前記酸不安定基を有する繰り返し単位として、カルボキシル基又はフェノール性水酸基の水素原子が酸不安定基で置換されている下記一般式(2)で示される繰り返し単位a1及びa2から選ばれる1つ以上の繰り返し単位を有し、重量平均分子量が、1,000〜500,000の範囲である高分子化合物を用いることを特徴とする請求項7に記載のパターン形成方法。
- 前記高分子化合物として、下記一般式(3)で示されるスルホニウム塩構造を有する繰り返し単位b1〜b3から選ばれる1つ以上の繰り返し単位をさらに含むものを用いることを特徴とする請求項8に記載のパターン形成方法。
- 前記感光性レジスト材料として、有機溶剤、塩基性化合物、溶解制御剤、及び界面活性剤のうちいずれか1つ以上を含有するものを用いることを特徴とする請求項5から請求項9のいずれか1項に記載のパターン形成方法。
- 前記高エネルギー線として、波長248nmのKrFエキシマレーザー、波長193nmのArFエキシマレーザー、電子ビーム、及び波長3〜15nmの範囲の軟X線のいずれかを用いることを特徴とする請求項5から請求項10のいずれか1項に記載のパターン形成方法。
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JP2015000196A JP6325464B2 (ja) | 2015-01-05 | 2015-01-05 | 現像液及びこれを用いたパターン形成方法 |
US14/949,418 US9645498B2 (en) | 2015-01-05 | 2015-11-23 | Developer and patterning process using the same |
KR1020150181513A KR101905160B1 (ko) | 2015-01-05 | 2015-12-18 | 현상액 및 이것을 이용한 패턴형성방법 |
TW105100007A TWI584084B (zh) | 2015-01-05 | 2016-01-04 | 顯影液及使用該顯影液之圖案形成方法 |
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JP2014219487A (ja) * | 2013-05-02 | 2014-11-20 | 富士フイルム株式会社 | パターン形成方法、電子デバイス及びその製造方法、現像液 |
JP7270347B2 (ja) * | 2018-09-07 | 2023-05-10 | 東京応化工業株式会社 | レジストパターン形成方法 |
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JPS6232453A (ja) * | 1985-08-06 | 1987-02-12 | Tokyo Ohka Kogyo Co Ltd | ポジ型ホトレジスト用現像液 |
EP0473547A1 (de) | 1990-08-27 | 1992-03-04 | Ciba-Geigy Ag | Olefinisch ungesättigte Oniumsalze |
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