JP4355591B2 - ポジ型レジスト組成物及びそれを用いたパターン形成方法 - Google Patents
ポジ型レジスト組成物及びそれを用いたパターン形成方法 Download PDFInfo
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- JP4355591B2 JP4355591B2 JP2004046286A JP2004046286A JP4355591B2 JP 4355591 B2 JP4355591 B2 JP 4355591B2 JP 2004046286 A JP2004046286 A JP 2004046286A JP 2004046286 A JP2004046286 A JP 2004046286A JP 4355591 B2 JP4355591 B2 JP 4355591B2
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- 239000000203 mixture Substances 0.000 title claims description 42
- 238000000034 method Methods 0.000 title claims description 13
- 125000000217 alkyl group Chemical group 0.000 claims description 143
- -1 alicyclic hydrocarbon Chemical class 0.000 claims description 122
- 125000004432 carbon atom Chemical group C* 0.000 claims description 110
- 125000002723 alicyclic group Chemical group 0.000 claims description 55
- 229920005989 resin Polymers 0.000 claims description 53
- 239000011347 resin Substances 0.000 claims description 53
- 150000001875 compounds Chemical class 0.000 claims description 51
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 40
- 229910052799 carbon Inorganic materials 0.000 claims description 32
- 229910052731 fluorine Inorganic materials 0.000 claims description 32
- 239000002253 acid Substances 0.000 claims description 31
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 30
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 28
- 239000004094 surface-active agent Substances 0.000 claims description 23
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000010703 silicon Substances 0.000 claims description 16
- 230000005855 radiation Effects 0.000 claims description 15
- 229910052710 silicon Inorganic materials 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 13
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 13
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 13
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 12
- 239000011737 fluorine Substances 0.000 claims description 12
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 claims description 11
- 125000000962 organic group Chemical group 0.000 claims description 11
- 125000003367 polycyclic group Chemical group 0.000 claims description 10
- 125000002950 monocyclic group Chemical group 0.000 claims description 9
- 239000004215 Carbon black (E152) Substances 0.000 claims description 8
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 238000004090 dissolution Methods 0.000 claims description 7
- 125000004429 atom Chemical group 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 4
- 125000000753 cycloalkyl group Chemical group 0.000 description 56
- 125000003545 alkoxy group Chemical group 0.000 description 50
- 125000001424 substituent group Chemical group 0.000 description 47
- 125000003118 aryl group Chemical group 0.000 description 38
- 125000005843 halogen group Chemical group 0.000 description 37
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 30
- 125000001153 fluoro group Chemical group F* 0.000 description 23
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 22
- 150000001450 anions Chemical class 0.000 description 20
- 150000001721 carbon Chemical group 0.000 description 18
- 239000010408 film Substances 0.000 description 18
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 17
- 125000004093 cyano group Chemical group *C#N 0.000 description 15
- 229910052740 iodine Inorganic materials 0.000 description 13
- 239000000178 monomer Substances 0.000 description 13
- 239000002904 solvent Substances 0.000 description 13
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 12
- 125000001309 chloro group Chemical group Cl* 0.000 description 12
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 12
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 12
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 12
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 11
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 11
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 11
- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 11
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 11
- 229910052801 chlorine Inorganic materials 0.000 description 11
- 239000000758 substrate Substances 0.000 description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 10
- 125000002252 acyl group Chemical group 0.000 description 10
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 10
- 230000000269 nucleophilic effect Effects 0.000 description 10
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 10
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 9
- 125000002868 norbornyl group Chemical group C12(CCC(CC1)C2)* 0.000 description 9
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 9
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 125000004423 acyloxy group Chemical group 0.000 description 8
- 125000005073 adamantyl group Chemical group C12(CC3CC(CC(C1)C3)C2)* 0.000 description 8
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 229920001577 copolymer Polymers 0.000 description 8
- 125000004430 oxygen atom Chemical group O* 0.000 description 8
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 8
- 229920002120 photoresistant polymer Polymers 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 8
- 125000002947 alkylene group Chemical group 0.000 description 7
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 7
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 7
- 125000005702 oxyalkylene group Chemical group 0.000 description 7
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 7
- 230000035945 sensitivity Effects 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 125000004434 sulfur atom Chemical group 0.000 description 7
- GQHTUMJGOHRCHB-UHFFFAOYSA-N 2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine Chemical compound C1CCCCN2CCCN=C21 GQHTUMJGOHRCHB-UHFFFAOYSA-N 0.000 description 6
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 6
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 6
- 125000003342 alkenyl group Chemical group 0.000 description 6
- 125000003710 aryl alkyl group Chemical group 0.000 description 6
- 238000001312 dry etching Methods 0.000 description 6
- LZCLXQDLBQLTDK-UHFFFAOYSA-N ethyl 2-hydroxypropanoate Chemical compound CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 description 6
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 6
- 229910052717 sulfur Inorganic materials 0.000 description 6
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 5
- 125000004390 alkyl sulfonyl group Chemical group 0.000 description 5
- 150000007514 bases Chemical class 0.000 description 5
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 5
- 125000004185 ester group Chemical group 0.000 description 5
- 125000006162 fluoroaliphatic group Chemical group 0.000 description 5
- 150000002596 lactones Chemical group 0.000 description 5
- 125000006239 protecting group Chemical group 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 5
- RNIPJYFZGXJSDD-UHFFFAOYSA-N 2,4,5-triphenyl-1h-imidazole Chemical compound C1=CC=CC=C1C1=NC(C=2C=CC=CC=2)=C(C=2C=CC=CC=2)N1 RNIPJYFZGXJSDD-UHFFFAOYSA-N 0.000 description 4
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 4
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 4
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 4
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 4
- 125000005079 alkoxycarbonylmethyl group Chemical group 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- SVURIXNDRWRAFU-OGMFBOKVSA-N cedrol Chemical group C1[C@]23[C@H](C)CC[C@H]3C(C)(C)[C@@H]1[C@@](O)(C)CC2 SVURIXNDRWRAFU-OGMFBOKVSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 4
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 4
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 4
- 125000004855 decalinyl group Chemical group C1(CCCC2CCCCC12)* 0.000 description 4
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 4
- 125000002485 formyl group Chemical group [H]C(*)=O 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- CATSNJVOTSVZJV-UHFFFAOYSA-N heptan-2-one Chemical compound CCCCCC(C)=O CATSNJVOTSVZJV-UHFFFAOYSA-N 0.000 description 4
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 4
- 125000000686 lactone group Chemical group 0.000 description 4
- 125000001624 naphthyl group Chemical group 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 125000000542 sulfonic acid group Chemical group 0.000 description 4
- DTGKSKDOIYIVQL-WEDXCCLWSA-N (+)-borneol Chemical group C1C[C@@]2(C)[C@@H](O)C[C@@H]1C2(C)C DTGKSKDOIYIVQL-WEDXCCLWSA-N 0.000 description 3
- SGUVLZREKBPKCE-UHFFFAOYSA-N 1,5-diazabicyclo[4.3.0]-non-5-ene Chemical compound C1CCN=C2CCCN21 SGUVLZREKBPKCE-UHFFFAOYSA-N 0.000 description 3
- OJPDDQSCZGTACX-UHFFFAOYSA-N 2-[n-(2-hydroxyethyl)anilino]ethanol Chemical compound OCCN(CCO)C1=CC=CC=C1 OJPDDQSCZGTACX-UHFFFAOYSA-N 0.000 description 3
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 3
- RLFWWDJHLFCNIJ-UHFFFAOYSA-N Aminoantipyrine Natural products CN1C(C)=C(N)C(=O)N1C1=CC=CC=C1 RLFWWDJHLFCNIJ-UHFFFAOYSA-N 0.000 description 3
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 239000007983 Tris buffer Substances 0.000 description 3
- 125000003668 acetyloxy group Chemical group [H]C([H])([H])C(=O)O[*] 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- VEQOALNAAJBPNY-UHFFFAOYSA-N antipyrine Chemical compound CN1C(C)=CC(=O)N1C1=CC=CC=C1 VEQOALNAAJBPNY-UHFFFAOYSA-N 0.000 description 3
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 3
- 125000005382 boronyl group Chemical group 0.000 description 3
- 125000002843 carboxylic acid group Chemical group 0.000 description 3
- 125000006165 cyclic alkyl group Chemical group 0.000 description 3
- 125000003700 epoxy group Chemical group 0.000 description 3
- 125000001033 ether group Chemical group 0.000 description 3
- 229940116333 ethyl lactate Drugs 0.000 description 3
- 125000005842 heteroatom Chemical group 0.000 description 3
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 3
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- LGRLWUINFJPLSH-UHFFFAOYSA-N methanide Chemical compound [CH3-] LGRLWUINFJPLSH-UHFFFAOYSA-N 0.000 description 3
- FZPXKEPZZOEPGX-UHFFFAOYSA-N n,n-dibutylaniline Chemical compound CCCCN(CCCC)C1=CC=CC=C1 FZPXKEPZZOEPGX-UHFFFAOYSA-N 0.000 description 3
- XTAZYLNFDRKIHJ-UHFFFAOYSA-N n,n-dioctyloctan-1-amine Chemical compound CCCCCCCCN(CCCCCCCC)CCCCCCCC XTAZYLNFDRKIHJ-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229960005222 phenazone Drugs 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical group C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 description 2
- WKBALTUBRZPIPZ-UHFFFAOYSA-N 2,6-di(propan-2-yl)aniline Chemical compound CC(C)C1=CC=CC(C(C)C)=C1N WKBALTUBRZPIPZ-UHFFFAOYSA-N 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 2
- ICSNLGPSRYBMBD-UHFFFAOYSA-N 2-aminopyridine Chemical compound NC1=CC=CC=N1 ICSNLGPSRYBMBD-UHFFFAOYSA-N 0.000 description 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 2
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 description 2
- XLLIQLLCWZCATF-UHFFFAOYSA-N 2-methoxyethyl acetate Chemical compound COCCOC(C)=O XLLIQLLCWZCATF-UHFFFAOYSA-N 0.000 description 2
- CUYKNJBYIJFRCU-UHFFFAOYSA-N 3-aminopyridine Chemical compound NC1=CC=CN=C1 CUYKNJBYIJFRCU-UHFFFAOYSA-N 0.000 description 2
- KDCGOANMDULRCW-UHFFFAOYSA-N 7H-purine Chemical compound N1=CNC2=NC=NC2=C1 KDCGOANMDULRCW-UHFFFAOYSA-N 0.000 description 2
- LPEKGGXMPWTOCB-UHFFFAOYSA-N 8beta-(2,3-epoxy-2-methylbutyryloxy)-14-acetoxytithifolin Natural products COC(=O)C(C)O LPEKGGXMPWTOCB-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 2
- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Natural products C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 description 2
- 229920001214 Polysorbate 60 Polymers 0.000 description 2
- WTKZEGDFNFYCGP-UHFFFAOYSA-N Pyrazole Chemical compound C=1C=NNC=1 WTKZEGDFNFYCGP-UHFFFAOYSA-N 0.000 description 2
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- IYFATESGLOUGBX-YVNJGZBMSA-N Sorbitan monopalmitate Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O IYFATESGLOUGBX-YVNJGZBMSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- MBHRHUJRKGNOKX-UHFFFAOYSA-N [(4,6-diamino-1,3,5-triazin-2-yl)amino]methanol Chemical compound NC1=NC(N)=NC(NCO)=N1 MBHRHUJRKGNOKX-UHFFFAOYSA-N 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- 125000004849 alkoxymethyl group Chemical group 0.000 description 2
- 125000003282 alkyl amino group Chemical group 0.000 description 2
- 125000004414 alkyl thio group Chemical group 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
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- 238000001459 lithography Methods 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 1
- YFSUTJLHUFNCNZ-UHFFFAOYSA-N perfluorooctane-1-sulfonic acid Chemical compound OS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F YFSUTJLHUFNCNZ-UHFFFAOYSA-N 0.000 description 1
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- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
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- 238000000206 photolithography Methods 0.000 description 1
- 239000003504 photosensitizing agent Substances 0.000 description 1
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- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 1
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- 235000010989 polyoxyethylene sorbitan monostearate Nutrition 0.000 description 1
- 239000001816 polyoxyethylene sorbitan tristearate Substances 0.000 description 1
- 235000010988 polyoxyethylene sorbitan tristearate Nutrition 0.000 description 1
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- 150000003141 primary amines Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- ILPVOWZUBFRIAX-UHFFFAOYSA-N propyl 2-oxopropanoate Chemical compound CCCOC(=O)C(C)=O ILPVOWZUBFRIAX-UHFFFAOYSA-N 0.000 description 1
- 150000003217 pyrazoles Chemical class 0.000 description 1
- DNXIASIHZYFFRO-UHFFFAOYSA-N pyrazoline Chemical compound C1CN=NC1 DNXIASIHZYFFRO-UHFFFAOYSA-N 0.000 description 1
- 150000004892 pyridazines Chemical class 0.000 description 1
- YAAWASYJIRZXSZ-UHFFFAOYSA-N pyrimidine-2,4-diamine Chemical compound NC1=CC=NC(N)=N1 YAAWASYJIRZXSZ-UHFFFAOYSA-N 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 150000003233 pyrroles Chemical class 0.000 description 1
- SBMSLRMNBSMKQC-UHFFFAOYSA-N pyrrolidin-1-amine Chemical compound NN1CCCC1 SBMSLRMNBSMKQC-UHFFFAOYSA-N 0.000 description 1
- NGXSWUFDCSEIOO-UHFFFAOYSA-N pyrrolidin-3-amine Chemical compound NC1CCNC1 NGXSWUFDCSEIOO-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Materials For Photolithography (AREA)
Description
<1>(A)下記一般式(1)で表される繰り返し単位を含有する、酸の作用によりアルカリ現像液に対する溶解速度が増大する樹脂、(B)活性光線又は放射線の照射により酸を発生する化合物、及びフッ素系及び/又はシリコン系界面活性剤を含有することを特徴とするポジ型レジスト組成物。
もに環構造を形成する残基を表し、該環構造は単環である。R2は、水素原子又は一価の有機基を表す。
<2>(A)下記一般式(1)で表される繰り返し単位及び下記一般式(pI)〜一般式(pVI)のいずれかで示される脂環式炭化水素を含む部分構造を有する繰り返し単位を含有する、酸の作用によりアルカリ現像液に対する溶解速度が増大する樹脂、及び(B)活性光線又は放射線の照射により酸を発生する化合物を含有することを特徴とするポジ型レジスト組成物。
もに環構造を形成する残基を表す。R 2 は、水素原子又は一価の有機基を表す。なお、C 1 炭素原子及びL 1 が形成する環構造を構成する少なくともひとつの原子にR 2 が結合することにより、C 1 炭素原子、L 1 及びR 2 により多環構造を形成してもよい。
R12〜R16は、各々独立に、炭素数1〜4個の直鎖もしくは分岐のアルキル基又は脂環式炭化水素基を表し、但し、R12〜R14のうち少なくとも1つ、また、R15、R16のいずれかは脂環式炭化水素基を表す。
R17〜R21は、各々独立に、水素原子、炭素数1〜4個の直鎖もしくは分岐のアルキル基又は脂環式炭化水素基を表し、但し、R17〜R21のうち少なくとも1つは脂環式炭化水素基を表す。また、R19、R21のいずれかは炭素数1〜4個の、直鎖もしくは分岐のアルキル基又は脂環式炭化水素基を表す。
R22〜R25は、各々独立に、水素原子、炭素数1〜4個の直鎖もしくは分岐のアルキル基又は脂環式炭化水素基を表し、但し、R22〜R25のうち少なくとも1つは脂環式炭化水
素基を表す。また、R23とR24は、互いに結合して環を形成していてもよい。
<3> 一般式(1)において、L1はC1炭素原子とともに形成する環構造が単環であることを特徴とする上記<2>に記載のポジ型レジスト組成物。
<4> 上記<1>〜<3>のいずれかに記載のポジ型レジスト組成物によりレジスト膜を形成し、該レジスト膜を露光、現像することを特徴とするパターン形成方法。
本発明は、上記<1>〜<4>に係る発明であるが、参考のため、他の事項についても合わせて記載している。
〔1〕酸の作用によりアルカリ現像液に対する溶解速度が増加する樹脂(A成分)
本発明のレジスト組成物が含有する、酸の作用によりアルカリ現像液に対する溶解速度が増加する樹脂(酸分解性樹脂)は、一般式(1)で表される繰り返し単位を含有する。
R11',R12'は、各々独立に、水素原子、シアノ基、ハロゲン原子、又はアルキル基を表す。
R13'〜R16'は、各々独立に、水素原子、ハロゲン原子、シアノ基、−COOH、−COOR5、酸の作用により分解する基、−C(=O)−X−A'−R17'、又はアルキル基あるいは環状炭化水素基を表す。
式中、Ra 、Rb は、水素原子、アルキル基、ハロゲン原子、水酸基、アルコキシ基を表し、両者は同一でも異なっていてもよい。アルキル基としては、メチル基、エチル基、プロピル基、イソプロピル基、ブチル基等の低級アルキル基が好ましく、更に好ましくはメチル基、エチル基、プロピル基、イソプロピル基から選択される。アルコキシ基としては、メトキシ基、エトキシ基、プロポキシ基、ブトキシ基等の炭素数1〜4個のものを挙げることができる。これらの基は更に水酸基、ハロゲン原子、アルコキシ基等で置換されていてもよい。ハロゲン原子としては、塩素原子、臭素原子、フッ素原子、沃素原子等を挙げることができる。rは1〜10の整数を表す。
(1)塗布溶剤に対する溶解性、
(2)製膜性(ガラス転移点)、
(3)アルカリ現像性、
(4)膜べり(親疎水性、アルカリ可溶性基選択)、
(5)未露光部の基板への密着性、
(6)ドライエッチング耐性、
等の微調整が可能となる。
(1) 上記一般式(pI)〜(pVI)で表される脂環式炭化水素を含む部分構造を有する繰り返し単位を含有するもの(側鎖型)
(2) 一般式(II-AB)で表される繰り返し単位を含有するもの(主鎖型)
但し、(2)においては例えば、更に以下のものが挙げられる。
(3) 一般式(II-AB)で表される繰り返し単位、無水マレイン酸誘導体及び(メタ)アクリレート構造を有するもの(ハイブリッド型)
脂環含有酸分解性樹脂における一般式(I)で表される繰り返し単位の含有量及び酸分解性基を有する繰り返し単位の含有量は、先に酸分解性樹脂について述べたものと同様である。
〔2〕活性光線又は放射線の照射により酸を発生する化合物(B成分)
活性光線又は放射線の照射により酸を発生する化合物(酸発生剤)としては、光カチオン重合の光開始剤、光ラジカル重合の光開始剤、色素類の光消色剤、光変色剤、あるいはマイクロレジスト等に使用されている活性光線又は放射線の照射により酸を発生する公知の化合物及びそれらの混合物を適宜に選択して使用することができる。
シクロアルキル基としては、例えば炭素数3〜8個の環状アルキル基(例えば、シクロペンチル基、シクロヘキシル基)を挙げることができる。
〔3〕フッ素系及び/又はシリコン系界面活性剤
本発明のポジ型レジスト組成物は、フッ素系界面活性剤、シリコン系界面活性剤及びフッ素原子と珪素原子の両方を含有する界面活性剤のいずれか、あるいは2種以上を含有することが好ましい。
〔4〕有機塩基性化合物
本発明のポジ型レジスト組成物は、有機塩基性化合物を含有することが好ましい。好ましい有機塩基性化合物としては、フェノールよりも塩基性の強い化合物である。中でも含窒素塩基性化合物が好ましく、例えば下記(A)〜(E)で表される構造が挙げられる。
〔5〕溶剤
本発明の組成物は、上記各成分を溶解する溶剤に溶かして支持体上に塗布する。ここで使用する溶剤としては、エチレンジクロライド、シクロヘキサノン、シクロペンタノン、2−ヘプタノン、γ−ブチロラクトン、メチルエチルケトン、エチレングリコールモノメチルエーテル、エチレングリコールモノエチルエーテル、2−メトキシエチルアセテート、エチレングリコールモノエチルエーテルアセテート、プロピレングリコールモノメチルエーテル(PGME)、プロピレングリコールモノメチルエーテルアセテート(PGMEA)、エチレンカーボネート、トルエン、酢酸エチル、酢酸ブチル、乳酸メチル、乳酸エチル、メトキシプロピオン酸メチル、エトキシプロピオン酸エチル、ピルビン酸メチル、ピルビン酸エチル、ピルビン酸プロピル、N,N−ジメチルホルムアミド、ジメチルスルホキシド、N−メチルピロリドン、テトラヒドロフラン等が好ましく、これらの溶剤を単独あるいは混合して使用する。
〔6〕その他の添加剤
本発明の組成物には、必要に応じて更に他の界面活性剤、酸分解性溶解阻止化合物、染料、可塑剤、光増感剤、及び現像液に対する溶解性を促進させる化合物等を含有させることができる。
〔7〕組成物の調製
各成分を溶剤に溶解し、調製されるレジスト組成物は、全固形分の濃度として、3〜25質量%であることが好ましく、5〜22質量%であることがより好ましく、7〜20質量%であることが更に好ましい。
<樹脂(1)の合成>
下記構造のモノマー(A1)、(B1)及び(C1)を30/40/30(モル比)の割合で仕込み、PGMEA(プロピレングリコールモノメチルエーテルアセテート)/PGME(プロピレングリコールモノメチルエーテル)=7/3(質量比)に溶解し、固形分濃度22質量%の溶液450gを調製した。この溶液に和光純薬製V−601を1mol%加え、これを窒素雰囲気下、6時間かけて、100℃に加熱したPGMEA(プロピレングリコールモノメチルエーテルアセテート)/PGME(プロピレングリコールモノメチルエーテル)=7/3(質量比)の混合溶液50gに滴下した。滴下終了後、反応液を2時間撹拌した。反応終了後、反応液を室温まで冷却し、ヘキサン/酢酸エチル=9/1(質量比)の混合溶媒5Lに晶析、析出した白色粉体を濾取し、目的物である樹脂(1)を回収した。
<ポジ型レジスト組成物の調製と評価>
表2におけるように、上記合成例で合成した樹脂(2g)、
光酸発生剤(配合量は表2に示した)、
有機塩基性化合物(4mg)、
界面活性剤(10mg)
を配合し、固形分10質量%となるように表2に示す溶剤に溶解した後、0.1μmのミクロフィルターで濾過し、更に0.03μmのフィルターで濾過し、実施例1〜24及び比較例1及び2のポジ型レジスト組成物を調製した。尚、表2における各成分について複数使用の際の比は質量比である。
〔光酸発生剤〕
記号は先に例示した光酸発生剤に対応している。
〔界面活性剤〕
1:メガファックF176(大日本インキ化学工業(株)製)(フッ素系)
2:メガファックR08(大日本インキ化学工業(株)製)
(フッ素及びシリコーン系)
3:ポリシロキサンポリマーKP−341(信越化学工業(株)製)
4:ポリオキシエチレンノニルフェニルエーテル
5:トロイゾルS−366(トロイケミカル(株)製)
〔塩基性化合物〕
1:N,N−ジヒドロキシエチルアニリン
2:N,N−ジブチルアニリン
3:トリオクチルアミン
4:トリフェニルイミダゾール
5:アンチピリン
6:2,6−ジイソプロピルアニリン
7:1,5−ジアザビシクロ〔4.3.0〕−5−ノネン(DBN)
〔溶剤〕
S1:プロピレングリコールモノメチルエーテルアセテート
S2:プロピレングリコールモノメチルエーテル
S3:γ−ブチロラクトン
S4:シクロヘキサノン
S5:乳酸エチル
S6:酢酸ブチル
〔パターンプロファイル〕
上記で調製されたポジ型フォトレジスト液をスピンコータを利用してシリコンウエハー上に塗布し、表2に示した温度(SB)で90秒間乾燥、約0.3μmのポジ型フォトレジスト膜を作製し、それにArFエキシマレーザー(波長193nm、NA=0.6のISI社製ArFステッパー)で露光した。露光後の加熱処理を示した温度(PEB)で90秒間行い、2.38質量%のテトラメチルアンモニウムヒドロキシド水溶液で現像、蒸留水でリンスし、レジストパターンプロファイルを得た。
〔PEB温度依存性〕
初めにBrewer Science社製ARC−29A−8をスピンコーターを利用してシリコンウエハー上に78nm塗布、乾燥した後、その上に得られたポジ型フォトレジスト組成物を塗布し、表2に示した温度(SB)で90秒間乾燥、約0.3μmのポジ型フォトレジスト膜を作製し、それにArFエキシマレーザー(波長193nm、NA=0.6のISI社製ArFステッパー)で露光し、露光後の加熱処理を表2に示した温度(PEB)で90秒間行い、2.38質量%のテトラメチルアンモニウムヒドロキシド水溶液で現像、蒸留水でリンスし、レジストパターンプロファイルを得た。
〔露光マージン〕
130nmのラインアンドスペースパターン(ライン/スペース=1/1)の線幅を再現する露光量を±5%変動させたときの得られる130nmラインパターンの線幅の変動率[(変動幅/130)×100](%)を露光マージンの指標とした。この値が小さいほど好ましい。
Claims (4)
- (A)下記一般式(1)で表される繰り返し単位及び下記一般式(pI)〜一般式(pVI)のいずれかで示される脂環式炭化水素を含む部分構造を有する繰り返し単位を含有する、酸の作用によりアルカリ現像液に対する溶解速度が増大する樹脂、及び(B)活性光線又は放射線の照射により酸を発生する化合物を含有することを特徴とするポジ型レジスト組成物。
もに環構造を形成する残基を表す。R2は、水素原子又は一価の有機基を表す。なお、C1炭素原子及びL1が形成する環構造を構成する少なくともひとつの原子にR2が結合することにより、C1炭素原子、L1及びR2により多環構造を形成してもよい。
R12〜R16は、各々独立に、炭素数1〜4個の直鎖もしくは分岐のアルキル基又は脂環式炭化水素基を表し、但し、R12〜R14のうち少なくとも1つ、また、R15、R16のいずれかは脂環式炭化水素基を表す。
R17〜R21は、各々独立に、水素原子、炭素数1〜4個の直鎖もしくは分岐のアルキル基又は脂環式炭化水素基を表し、但し、R17〜R21のうち少なくとも1つは脂環式炭化水素基を表す。また、R19、R21のいずれかは炭素数1〜4個の、直鎖もしくは分岐のアルキル基又は脂環式炭化水素基を表す。
R22〜R25は、各々独立に、水素原子、炭素数1〜4個の直鎖もしくは分岐のアルキル基又は脂環式炭化水素基を表し、但し、R22〜R25のうち少なくとも1つは脂環式炭化水
素基を表す。また、R23とR24は、互いに結合して環を形成していてもよい。 - 一般式(1)において、L1はC1炭素原子とともに形成する環構造が単環であることを特徴とする請求項2に記載のポジ型レジスト組成物。
- 請求項1〜3のいずれかに記載のポジ型レジスト組成物によりレジスト膜を形成し、該レジスト膜を露光、現像することを特徴とするパターン形成方法。
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