JP6108662B2 - 塩基反応性成分を含む組成物およびフォトリソグラフィのための方法 - Google Patents
塩基反応性成分を含む組成物およびフォトリソグラフィのための方法 Download PDFInfo
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- JP6108662B2 JP6108662B2 JP2012000221A JP2012000221A JP6108662B2 JP 6108662 B2 JP6108662 B2 JP 6108662B2 JP 2012000221 A JP2012000221 A JP 2012000221A JP 2012000221 A JP2012000221 A JP 2012000221A JP 6108662 B2 JP6108662 B2 JP 6108662B2
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- GAAFCTNQAOVBMF-UHFFFAOYSA-N CC(=C)C(O)=O.OC1COC(=O)C1 Chemical compound CC(=C)C(O)=O.OC1COC(=O)C1 GAAFCTNQAOVBMF-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000723346 Cinnamomum camphora Species 0.000 description 1
- 241000254173 Coleoptera Species 0.000 description 1
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- YXHKONLOYHBTNS-UHFFFAOYSA-N Diazomethane Chemical class C=[N+]=[N-] YXHKONLOYHBTNS-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229930194542 Keto Natural products 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- RJUFJBKOKNCXHH-UHFFFAOYSA-N Methyl propionate Chemical compound CCC(=O)OC RJUFJBKOKNCXHH-UHFFFAOYSA-N 0.000 description 1
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- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Chemical class CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 1
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- 229910004298 SiO 2 Inorganic materials 0.000 description 1
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- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- YPPVLYIFEAESGO-UHFFFAOYSA-N [2,3-bis(methylsulfonyloxy)phenyl] methanesulfonate Chemical compound CS(=O)(=O)OC1=CC=CC(OS(C)(=O)=O)=C1OS(C)(=O)=O YPPVLYIFEAESGO-UHFFFAOYSA-N 0.000 description 1
- OIHCCWXZFYNOJS-UHFFFAOYSA-N [2,3-bis-(4-methylphenyl)sulfonyloxyphenyl] 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)OC1=CC=CC(OS(=O)(=O)C=2C=CC(C)=CC=2)=C1OS(=O)(=O)C1=CC=C(C)C=C1 OIHCCWXZFYNOJS-UHFFFAOYSA-N 0.000 description 1
- HKKMPPDCCCBZHM-UHFFFAOYSA-M [4-[(2-methylpropan-2-yl)oxy]phenyl]-diphenylsulfanium;trifluoromethanesulfonate Chemical compound [O-]S(=O)(=O)C(F)(F)F.C1=CC(OC(C)(C)C)=CC=C1[S+](C=1C=CC=CC=1)C1=CC=CC=C1 HKKMPPDCCCBZHM-UHFFFAOYSA-M 0.000 description 1
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- 150000007513 acids Chemical group 0.000 description 1
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- 125000002015 acyclic group Chemical group 0.000 description 1
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- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- 230000003667 anti-reflective effect Effects 0.000 description 1
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- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 239000007795 chemical reaction product Substances 0.000 description 1
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- 239000010949 copper Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
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- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 125000002243 cyclohexanonyl group Chemical group *C1(*)C(=O)C(*)(*)C(*)(*)C(*)(*)C1(*)* 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 238000010511 deprotection reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- URQUNWYOBNUYJQ-UHFFFAOYSA-N diazonaphthoquinone Chemical compound C1=CC=C2C(=O)C(=[N]=[N])C=CC2=C1 URQUNWYOBNUYJQ-UHFFFAOYSA-N 0.000 description 1
- UMIJUNPUFYIHJW-UHFFFAOYSA-N dicyclohexylazanium;4-methylbenzenesulfonate Chemical compound CC1=CC=C(S([O-])(=O)=O)C=C1.C1CCCCC1[NH2+]C1CCCCC1 UMIJUNPUFYIHJW-UHFFFAOYSA-N 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- WEHWNAOGRSTTBQ-UHFFFAOYSA-N dipropylamine Chemical compound CCCNCCC WEHWNAOGRSTTBQ-UHFFFAOYSA-N 0.000 description 1
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 1
- ODQWQRRAPPTVAG-GZTJUZNOSA-N doxepin Chemical compound C1OC2=CC=CC=C2C(=C/CCN(C)C)/C2=CC=CC=C21 ODQWQRRAPPTVAG-GZTJUZNOSA-N 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
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- 125000004185 ester group Chemical group 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- UHKJHMOIRYZSTH-UHFFFAOYSA-N ethyl 2-ethoxypropanoate Chemical compound CCOC(C)C(=O)OCC UHKJHMOIRYZSTH-UHFFFAOYSA-N 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 125000003709 fluoroalkyl group Chemical group 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
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- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- OGBAEJNSZKSDFD-UHFFFAOYSA-N heptan-2-yl 2-methylprop-2-enoate Chemical compound CCCCCC(C)OC(=O)C(C)=C OGBAEJNSZKSDFD-UHFFFAOYSA-N 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- ZHUXMBYIONRQQX-UHFFFAOYSA-N hydroxidodioxidocarbon(.) Chemical group [O]C(O)=O ZHUXMBYIONRQQX-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- AQYSYJUIMQTRMV-UHFFFAOYSA-N hypofluorous acid Chemical group FO AQYSYJUIMQTRMV-UHFFFAOYSA-N 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- 150000003903 lactic acid esters Chemical class 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229940057867 methyl lactate Drugs 0.000 description 1
- 229940017219 methyl propionate Drugs 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- GNVRJGIVDSQCOP-UHFFFAOYSA-N n-ethyl-n-methylethanamine Chemical compound CCN(C)CC GNVRJGIVDSQCOP-UHFFFAOYSA-N 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 125000006502 nitrobenzyl group Chemical group 0.000 description 1
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 108010001861 pregnancy-associated glycoprotein 1 Proteins 0.000 description 1
- 108010001843 pregnancy-associated glycoprotein 2 Proteins 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 229920006009 resin backbone Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000004819 silanols Chemical class 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- CYFLXLSBHQBMFT-UHFFFAOYSA-N sulfamoxole Chemical group O1C(C)=C(C)N=C1NS(=O)(=O)C1=CC=C(N)C=C1 CYFLXLSBHQBMFT-UHFFFAOYSA-N 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
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- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 150000005622 tetraalkylammonium hydroxides Chemical class 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- 125000003866 trichloromethyl group Chemical group ClC(Cl)(Cl)* 0.000 description 1
- TUODWSVQODNTSU-UHFFFAOYSA-M trifluoromethanesulfonate;tris[4-[(2-methylpropan-2-yl)oxy]phenyl]sulfanium Chemical compound [O-]S(=O)(=O)C(F)(F)F.C1=CC(OC(C)(C)C)=CC=C1[S+](C=1C=CC(OC(C)(C)C)=CC=1)C1=CC=C(OC(C)(C)C)C=C1 TUODWSVQODNTSU-UHFFFAOYSA-M 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
- WLOQLWBIJZDHET-UHFFFAOYSA-N triphenylsulfonium Chemical compound C1=CC=CC=C1[S+](C=1C=CC=CC=1)C1=CC=CC=C1 WLOQLWBIJZDHET-UHFFFAOYSA-N 0.000 description 1
- 239000012953 triphenylsulfonium Substances 0.000 description 1
- YFTHZRPMJXBUME-UHFFFAOYSA-N tripropylamine Chemical compound CCCN(CCC)CCC YFTHZRPMJXBUME-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- 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
- G03F7/0046—Photosensitive materials with perfluoro compounds, e.g. for dry lithography
-
- 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
- G03F7/0045—Photosensitive materials with organic non-macromolecular light-sensitive compounds not otherwise provided for, e.g. dissolution inhibitors
-
- 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
- G03F7/039—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
-
- 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
-
- 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
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Materials For Photolithography (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Description
より具体的には、本発明の好ましいフォトレジストは
(i)1種以上の樹脂、
(ii)1種以上の光酸発生剤化合物を適切に含むことができる光活性成分、並びに
(iii)1以上の塩基反応性基を含む1種以上の材料
を含むことができ、塩基反応性基は露光および露光後リソグラフィ処理工程の後で反応性である。好ましくは、塩基反応性基は0.26Nのテトラメチルアンモニウムヒドロキシド水性現像剤組成物のような水性アルカリ現像剤組成物での処理の際に反応性である。好ましくは、塩基反応性基を含むこのような材料は1種以上の樹脂と実質的に非混和性である。好ましい塩基反応性材料は1以上の塩基反応性基、例えば、フッ素化エステルなどを含む樹脂である。
1)248nmでの像形成に特に好適な化学増幅ポジ型レジストを提供できる、酸不安定基を含むフェノール系樹脂。この種の特に好ましい樹脂には、以下のものが挙げられる:i)ビニルフェノールおよびアクリル酸アルキルの重合単位を含むポリマー、ここにおいて、重合されたアクリル酸アルキル単位は光酸の存在下でデブロッキング(deblocking)反応を受けうる。光酸誘起デブロッキング反応を受けうる代表的なアクリル酸アルキルには、例えば、アクリル酸t−ブチル、メタクリル酸t−ブチル、アクリル酸メチルアダマンチル、メタクリル酸メチルアダマンチル、および光酸誘起反応を受けうる他の非環式アルキルおよび脂環式アクリラートが挙げられ、例えば、米国特許第6,042,997号および第5,492,793号におけるポリマーが挙げられ、これら文献は参照によって本明細書に組み込まれる:ii)ビニルフェノール、場合によって置換されている(ヒドロキシもしくはカルボキシ環置換基を含まない)ビニルフェニル(例えばスチレン)、および上記ポリマーi)で記載されたデブロッキング基を有するもののようなアクリル酸アルキルの重合単位を含むポリマー、例えば、米国特許第6,042,997号に記載されたポリマー、この文献は参照によって本明細書に組み込まれる:およびiii)光酸と反応しうるアセタールもしくはケタール部分を含む繰り返し単位、および場合によってフェニルもしくはフェノール性基のような芳香族繰り返し単位を含むポリマー;このようなポリマーは、米国特許第5,929,176号および第6,090,526号に記載されており、これら文献は参照によって本明細書に組み込まれる:並びにi)および/またはii)および/またはiii)のブレンド。
本発明の他の形態が以下に開示される。
上述のように、本発明の特に好ましいフォトレジストは水性アルカリ現像の後での欠点の低減を示すことができる。
好ましい塩基反応性基には、塩基(例えば、水性アルカリ現像剤組成物)での処理の際に単一のヒドロキシル基を提供できる部分が挙げられる。より具体的には、このような塩基反応性基を含む好適なモノマーには、以下の式(I)のものが挙げられる:
さらなる好ましい塩基反応性基には、塩基(例えば、水性アルカリ現像剤組成物)での処理の際に複数のヒドロキシル基を提供できる部分が挙げられる。より具体的には、このような塩基反応性基を含む好適なモノマーには、以下の式(II)のものが挙げられる:
さらなる好ましい塩基反応性基には、塩基(例えば、水性アルカリ現像剤組成物)での処理の際に1以上のカルボン酸基を提供できる部分が挙げられる。より具体的には、このような塩基反応性基を含む好適なモノマーには、以下の式(III)のものが挙げられる:
さらなる好ましい塩基反応性基には、塩基反応性材料(例えば、塩基反応性樹脂の繰り返し単位)の1つの繰り返し単位が複数の塩基反応性部分、例えば、2、3、4もしくは5個の塩基反応性部分、より典型的には2もしくは3個の塩基反応性部分を含む様な部分を含む。この種の典型的な好ましいモノマーには以下の構造が挙げられる。以下の構造においては、塩基反応性基を有するモノマーが左側に描かれ、塩基との反応後のヒドロキシル基を提供するモノマーは右側に描かれる。以下のモノマーも、現像の際に複数の極性(特に、ヒドロキシ)基を提供する典型的なモノマーである。
以下の実施例においては、モノマー1〜29のいずれかについての言及は保護された形態での先に示されたモノマー構造を含む(すなわち、アルカリ現像剤での後処理の前の構造が示される)。
A.モノマーおよび開始剤混合物:7.00gの
(CH=CH(CH3))C(=O)O(CH2)2)O(C=O)CF3(第1のモノマー)、および4.80gの
(CH2=CH)C(=O)OC(CH(CH3))2C(CH3)3(第2のモノマー)、0.42gのトリグノックス(Trignox)−23(開始剤)、並びに17.0gのPGMEA(溶媒)を供給バイアルに秤量。
B.反応器:反応器中に30gのPGMEA、85℃に維持。
C.AをBに供給:120分間一定の供給速度でAがBに供給される。
D.温度保持:AをBに供給した後で、反応器の温度は85℃でさらに2時間維持され、次いでこの反応器温度は自然に室温まで冷却された。
実施例1の手順に従って、以下のターポリマーおよびテトラポリマーが製造され、重合モノマー単位は以下に特定される:
35/55/10とはポリマー合成におけるそれぞれのモノマーの添加重量パーセントをいい、すなわち、この樹脂は35重量パーセントのGMA−DFAA、55重量パーセントのGMA−MDFA、および10重量パーセントの233tMBAからなるモノマー混合物を重合することにより製造される。
この樹脂は15重量パーセントのGMA−2233TFPA、20重量パーセントのGMA−DFAA、55重量パーセントのGMA−MDFA、および10重量パーセントの233tMBAからなるモノマー混合物を重合することにより製造される。
パート1:フォトレジスト製造
以下の表1に特定される材料を混合することにより、3種類のフォトレジスト組成物(以下に、レジストA、レジストBおよびレジストCとして特定)が製造された。全ての量は重量パーセントである。
ポリ−2:M5/M2/M6=35/40/25
PAG−1:4−tert−ブチルフェニルジフェニルスルホニウムペルフルオロブタンスルホナート
PAG−2:トリフェニルスルホニウムトリフラート
Q−1:トリイソプロパノールアミン
SLA−1:PolyFox656(フルオロジオール界面活性剤 サウスカロライナ州チャールストンのオムノバソリューションズから入手可能)
溶媒:A=PGMEA、B=シクロヘキサノン、C=メチル2−ヒドロキシイソブチラート
M1:2−メチルアダマンチルメタクリラート
M2:アルファ−ガンマ−ブチロラクトンメタクリラート
M3:5(または6)−シアノビシクロ[2.2.1]ヘプタン−2−イル−メタクリラート
M4:エタン−1,2−ジイルビス(オキシ)エタン−1,1−ジイル)ビス(2−メチルアクリラート)
M5:1−エチルシクロペンチルメタクリラート
M6:2−ヒドロキシアダマンチルメタクリラート
上記パート1で特定されるレジストA、BおよびCが、有機反射防止組成物の第1の層を有する別々のシリコンウェハ上にコーティングされ、そして110℃で60秒間プリベークされた。ASML1100 193nmスキャナ(NA=0.75)を用いて、ドライ露光が行われた。露光および未露光領域が造り出すためにチェッカーボードディフェクトマスクが使用され、75nmの1:1ラインアンドスペースパターンをプリントするためのサイジングエネルギー(26mJ)が露光のために使用された。露光後、膜は110℃で60秒間ベークされ、2.38重量%の水性テトラメチルアンモニウムヒドロキシド現像剤で現像された。KLA2351欠陥検査ツールによって欠陥カウントが測定され、結果は以下の表2に示される。
示された量で下記材料を混合することによりフォトレジスト組成物が製造される:
1.樹脂成分:フォトレジスト組成物の全重量を基準にして6.79重量%の量の(2−メチル−2−アダマンチルメタクリラート/ベータ−ヒドロキシ−ガンマ−ブチロラクトンメタクリラート/シアノ−ノルボルニルメタクリラート)のターポリマー;
2.光酸発生剤化合物:フォトレジスト組成物の全重量を基準にして0.284重量%の量のt−ブチルフェニルテトラメチレンスルホニウムペルフルオロブタンスルホナート;
3.塩基添加剤:フォトレジスト組成物の全重量を基準にして0.017重量%の量のN−アルキルカプロラクタム;
4.実質的に非混和性の添加剤(すなわち、塩基反応性樹脂):フォトレジスト組成物の全重量を基準にして0.213重量%の量の、上記実施例1で記載されるように製造された実施例1のポリマー;
5.溶媒成分:約90パーセントの流体組成物を提供するプロピレングリコールモノメチルエーテルアセタート。
このフォトレジスト層は次いで(約120℃などで)露光後ベークされ、そして0.26Nのアルカリ現像剤水溶液で現像される。
塩基反応性基を有する上記モノマーを用いたポリマーは、良好な現像剤切り替え能力を有しており、それにより当該ポリマーで増大された所望の親水性をレジスト表面に提供したことを示した。以下の表3に示されるのは、現像剤に曝露される前と後でのこのように増大したレジスト表面の接触角の例である。試験は、実質的に非混和性のポリマーの3%(レジストの全固形分に対して)添加量で60秒間の単純なパドル現像時間で、0.26Nのテトラメチルアンモニウムヒドロキシド現像剤組成物を用いて行われ、レジストは4.4%の全固形分量を有していた。
塩基反応性樹脂1が、実施例4に特定される種類のフォトレジスト組成物の全固形分(溶媒キャリアを除く全ての成分)の3重量パーセントで添加された(塩基反応性樹脂1が実施例3の実質的に非混和性の添加剤と交換された)。以下の表4に示されるのは、0.26Nのテトラメチルアンモニウムヒドロキシド現像剤組成物で処理される前と後でのこのフォトレジスト表面の接触角である。
上記実施例2で記載されるように製造された塩基反応性樹脂2が、実施例4に特定される種類のフォトレジスト組成物の全固形分(溶媒キャリアを除く全ての成分)の3重量パーセントで添加された(塩基反応性樹脂2が実施例4の実質的に非混和性の添加剤と交換された)。以下の表5に示されるのは、0.26Nのテトラメチルアンモニウムヒドロキシド現像剤組成物で処理される前と後でのこのフォトレジスト表面の接触角である。
Claims (8)
- (a)(i)1種以上の樹脂
(ii)光活性成分、および
(iii)前記1種以上の樹脂とは異なっており、塩基反応性基を含む1種以上の材料、
を含むフォトレジスト組成物を基体上に適用し、並びに
(b)適用されたフォトレジスト層を前記フォトレジスト組成物を活性化する放射線でドライ露光する
ことを含む、フォトレジスト組成物を処理する方法であって、
前記(iii)1種以上の材料が、下記式(I)、(II)または(III)によって表される少なくとも一種のモノマーを繰り返し単位として含む樹脂である、方法。
- 前記1種以上の材料が前記1種以上の樹脂と実質的に非混和性である請求項1に記載の方法。
- 前記1種以上の材料が、前記適用工程中にフォトレジスト組成物層の上部に向かって移動する請求項1または2に記載の方法。
- 前記(iii)1種以上の材料が、前記(i)1種以上の樹脂よりも低い表面エネルギーを有する請求項1〜3のいずれか1項に記載の方法。
- 前記(iii)1種以上の材料が、前記式(II)によって表されるモノマーを繰り返し単位として含む、請求項1〜4のいずれか1項に記載の方法。
- 前記1種以上の材料が光酸不安定基を含む請求項1〜5のいずれか1項に記載の方法。
- 露光されたフォトレジスト層を水性アルカリ現像剤で現像し、それにより1以上の塩基反応性基が結合開裂反応を受けて1以上の極性基を提供することをさらに含む、請求項1〜6のいずれか1項に記載の方法。
- 現像後のフォトレジスト層が30°未満の水後退接触角を有し、および/または現像前のフォトレジスト層が40°を超える水後退接触角を有する請求項1〜7のいずれか1項に記載の方法。
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JP5172494B2 (ja) * | 2008-06-23 | 2013-03-27 | 東京応化工業株式会社 | 液浸露光用レジスト組成物、レジストパターン形成方法、含フッ素高分子化合物 |
JP4666190B2 (ja) * | 2008-10-30 | 2011-04-06 | 信越化学工業株式会社 | レジスト材料及びパターン形成方法 |
JP4748331B2 (ja) | 2008-12-02 | 2011-08-17 | 信越化学工業株式会社 | レジスト材料及びパターン形成方法 |
JP5740883B2 (ja) * | 2009-09-18 | 2015-07-01 | Jsr株式会社 | アルカリ解離性基を有する重合性の化合物 |
JP5439154B2 (ja) * | 2009-12-15 | 2014-03-12 | 東京応化工業株式会社 | ポジ型レジスト組成物及びレジストパターン形成方法 |
JP5131488B2 (ja) * | 2009-12-22 | 2013-01-30 | 信越化学工業株式会社 | 含フッ素単量体及び含フッ素高分子化合物 |
JP5387605B2 (ja) * | 2010-04-07 | 2014-01-15 | 信越化学工業株式会社 | 含フッ素単量体、高分子化合物、レジスト材料及びパターン形成方法 |
JP5282781B2 (ja) | 2010-12-14 | 2013-09-04 | 信越化学工業株式会社 | レジスト材料及びパターン形成方法 |
US9921912B1 (en) | 2015-09-30 | 2018-03-20 | EMC IP Holding Company LLC | Using spare disk drives to overprovision raid groups |
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KR20120078660A (ko) | 2012-07-10 |
US20120171626A1 (en) | 2012-07-05 |
EP2472320A2 (en) | 2012-07-04 |
TWI486711B (zh) | 2015-06-01 |
JP2012141614A (ja) | 2012-07-26 |
CN102681336A (zh) | 2012-09-19 |
US9436082B2 (en) | 2016-09-06 |
TW201234109A (en) | 2012-08-16 |
CN102681336B (zh) | 2017-04-12 |
KR101841454B1 (ko) | 2018-03-23 |
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