JP6436313B2 - ピロールノボラック樹脂を含むレジスト下層膜形成組成物 - Google Patents
ピロールノボラック樹脂を含むレジスト下層膜形成組成物 Download PDFInfo
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- JP6436313B2 JP6436313B2 JP2015524037A JP2015524037A JP6436313B2 JP 6436313 B2 JP6436313 B2 JP 6436313B2 JP 2015524037 A JP2015524037 A JP 2015524037A JP 2015524037 A JP2015524037 A JP 2015524037A JP 6436313 B2 JP6436313 B2 JP 6436313B2
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- 239000000203 mixture Substances 0.000 title claims description 74
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 title description 32
- 229920003986 novolac Polymers 0.000 title description 18
- 239000000758 substrate Substances 0.000 claims description 57
- 125000004432 carbon atom Chemical group C* 0.000 claims description 52
- 239000000126 substance Substances 0.000 claims description 44
- 239000004065 semiconductor Substances 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 40
- 125000003118 aryl group Chemical group 0.000 claims description 38
- 239000002253 acid Substances 0.000 claims description 25
- 125000000217 alkyl group Chemical group 0.000 claims description 23
- 238000005530 etching Methods 0.000 claims description 21
- 238000010894 electron beam technology Methods 0.000 claims description 17
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 16
- 125000003342 alkenyl group Chemical group 0.000 claims description 15
- 239000003431 cross linking reagent Substances 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 14
- 238000011161 development Methods 0.000 claims description 13
- 125000005843 halogen group Chemical group 0.000 claims description 13
- 125000003277 amino group Chemical group 0.000 claims description 12
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 10
- 125000000623 heterocyclic group Chemical group 0.000 claims description 9
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 125000005577 anthracene group Chemical group 0.000 claims description 3
- 125000001624 naphthyl group Chemical group 0.000 claims description 3
- 125000005581 pyrene group Chemical group 0.000 claims description 3
- 238000007740 vapor deposition Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 125000000547 substituted alkyl group Chemical group 0.000 claims 1
- 239000010408 film Substances 0.000 description 182
- -1 2-methyl-cyclopropyl Chemical group 0.000 description 137
- 229920000642 polymer Polymers 0.000 description 51
- 238000001459 lithography Methods 0.000 description 39
- 239000000243 solution Substances 0.000 description 29
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 27
- 150000001875 compounds Chemical class 0.000 description 26
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 26
- 238000001312 dry etching Methods 0.000 description 26
- 230000015572 biosynthetic process Effects 0.000 description 22
- 229920002120 photoresistant polymer Polymers 0.000 description 22
- 238000006243 chemical reaction Methods 0.000 description 20
- 238000003786 synthesis reaction Methods 0.000 description 19
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 17
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 17
- 229920005989 resin Polymers 0.000 description 16
- 239000011347 resin Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 15
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 14
- 239000002904 solvent Substances 0.000 description 14
- 239000007787 solid Substances 0.000 description 13
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- LZCLXQDLBQLTDK-UHFFFAOYSA-N ethyl 2-hydroxypropanoate Chemical compound CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 12
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 12
- 239000004793 Polystyrene Chemical class 0.000 description 11
- 230000018109 developmental process Effects 0.000 description 11
- 229920002223 polystyrene Chemical class 0.000 description 11
- 239000000178 monomer Substances 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- KJIFKLIQANRMOU-UHFFFAOYSA-N oxidanium;4-methylbenzenesulfonate Chemical compound O.CC1=CC=C(S(O)(=O)=O)C=C1 KJIFKLIQANRMOU-UHFFFAOYSA-N 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- ZDYVRSLAEXCVBX-UHFFFAOYSA-N pyridinium p-toluenesulfonate Chemical compound C1=CC=[NH+]C=C1.CC1=CC=C(S([O-])(=O)=O)C=C1 ZDYVRSLAEXCVBX-UHFFFAOYSA-N 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 8
- 235000002597 Solanum melongena Nutrition 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000003513 alkali Substances 0.000 description 7
- 229940098779 methanesulfonic acid Drugs 0.000 description 7
- 239000002244 precipitate Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 239000004094 surface-active agent Substances 0.000 description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 239000000706 filtrate Substances 0.000 description 6
- 150000002576 ketones Chemical class 0.000 description 6
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 5
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 5
- 150000001299 aldehydes Chemical class 0.000 description 5
- 238000004132 cross linking Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229940116333 ethyl lactate Drugs 0.000 description 5
- SQAINHDHICKHLX-UHFFFAOYSA-N 1-naphthaldehyde Chemical compound C1=CC=C2C(C=O)=CC=CC2=C1 SQAINHDHICKHLX-UHFFFAOYSA-N 0.000 description 4
- RGHHSNMVTDWUBI-UHFFFAOYSA-N 4-hydroxybenzaldehyde Chemical compound OC1=CC=C(C=O)C=C1 RGHHSNMVTDWUBI-UHFFFAOYSA-N 0.000 description 4
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical group C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 4
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- JARKCYVAAOWBJS-UHFFFAOYSA-N hexanal Chemical compound CCCCCC=O JARKCYVAAOWBJS-UHFFFAOYSA-N 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 125000001424 substituent group Chemical group 0.000 description 4
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 4
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 4
- XGQJGMGAMHFMAO-UHFFFAOYSA-N 1,3,4,6-tetrakis(methoxymethyl)-3a,6a-dihydroimidazo[4,5-d]imidazole-2,5-dione Chemical compound COCN1C(=O)N(COC)C2C1N(COC)C(=O)N2COC XGQJGMGAMHFMAO-UHFFFAOYSA-N 0.000 description 3
- MRABAEUHTLLEML-UHFFFAOYSA-N Butyl lactate Chemical compound CCCCOC(=O)C(C)O MRABAEUHTLLEML-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 239000003377 acid catalyst Substances 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000001191 butyl (2R)-2-hydroxypropanoate Substances 0.000 description 3
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000006482 condensation reaction Methods 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 230000031700 light absorption Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 3
- 125000000962 organic group Chemical group 0.000 description 3
- 239000003505 polymerization initiator Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000006254 rheological additive Substances 0.000 description 3
- 150000003585 thioureas Chemical class 0.000 description 3
- 150000003672 ureas Chemical class 0.000 description 3
- DLDWUFCUUXXYTB-UHFFFAOYSA-N (2-oxo-1,2-diphenylethyl) 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)OC(C=1C=CC=CC=1)C(=O)C1=CC=CC=C1 DLDWUFCUUXXYTB-UHFFFAOYSA-N 0.000 description 2
- BJFHJALOWQJJSQ-UHFFFAOYSA-N (3-methoxy-3-methylpentyl) acetate Chemical compound CCC(C)(OC)CCOC(C)=O BJFHJALOWQJJSQ-UHFFFAOYSA-N 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- OXHNLMTVIGZXSG-UHFFFAOYSA-N 1-Methylpyrrole Chemical compound CN1C=CC=C1 OXHNLMTVIGZXSG-UHFFFAOYSA-N 0.000 description 2
- LIPRQQHINVWJCH-UHFFFAOYSA-N 1-ethoxypropan-2-yl acetate Chemical compound CCOCC(C)OC(C)=O LIPRQQHINVWJCH-UHFFFAOYSA-N 0.000 description 2
- GEZGAZKEOUKLBR-UHFFFAOYSA-N 1-phenylpyrrole Chemical compound C1=CC=CN1C1=CC=CC=C1 GEZGAZKEOUKLBR-UHFFFAOYSA-N 0.000 description 2
- DMFAHCVITRDZQB-UHFFFAOYSA-N 1-propoxypropan-2-yl acetate Chemical compound CCCOCC(C)OC(C)=O DMFAHCVITRDZQB-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
- BYGQBDHUGHBGMD-UHFFFAOYSA-N 2-methylbutanal Chemical compound CCC(C)C=O BYGQBDHUGHBGMD-UHFFFAOYSA-N 0.000 description 2
- YGCZTXZTJXYWCO-UHFFFAOYSA-N 3-phenylpropanal Chemical compound O=CCCC1=CC=CC=C1 YGCZTXZTJXYWCO-UHFFFAOYSA-N 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- 125000004172 4-methoxyphenyl group Chemical group [H]C1=C([H])C(OC([H])([H])[H])=C([H])C([H])=C1* 0.000 description 2
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 2
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- KCXZNSGUUQJJTR-UHFFFAOYSA-N Di-n-hexyl phthalate Chemical compound CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCC KCXZNSGUUQJJTR-UHFFFAOYSA-N 0.000 description 2
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 description 2
- XXRCUYVCPSWGCC-UHFFFAOYSA-N Ethyl pyruvate Chemical compound CCOC(=O)C(C)=O XXRCUYVCPSWGCC-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 2
- AMIMRNSIRUDHCM-UHFFFAOYSA-N Isopropylaldehyde Chemical compound CC(C)C=O AMIMRNSIRUDHCM-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical group C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 229920001214 Polysorbate 60 Polymers 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 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
- 239000004147 Sorbitan trioleate Substances 0.000 description 2
- PRXRUNOAOLTIEF-ADSICKODSA-N Sorbitan trioleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCC\C=C/CCCCCCCC)[C@H]1OC[C@H](O)[C@H]1OC(=O)CCCCCCC\C=C/CCCCCCCC PRXRUNOAOLTIEF-ADSICKODSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 150000003934 aromatic aldehydes Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- YNKMHABLMGIIFX-UHFFFAOYSA-N benzaldehyde;methane Chemical compound C.O=CC1=CC=CC=C1 YNKMHABLMGIIFX-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 229940043232 butyl acetate Drugs 0.000 description 2
- NMJJFJNHVMGPGM-UHFFFAOYSA-N butyl formate Chemical compound CCCCOC=O NMJJFJNHVMGPGM-UHFFFAOYSA-N 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 2
- OEYIOHPDSNJKLS-UHFFFAOYSA-N choline Chemical compound C[N+](C)(C)CCO OEYIOHPDSNJKLS-UHFFFAOYSA-N 0.000 description 2
- 229960001231 choline Drugs 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 description 2
- MGWAVDBGNNKXQV-UHFFFAOYSA-N diisobutyl phthalate Chemical compound CC(C)COC(=O)C1=CC=CC=C1C(=O)OCC(C)C MGWAVDBGNNKXQV-UHFFFAOYSA-N 0.000 description 2
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- CKSRFHWWBKRUKA-UHFFFAOYSA-N ethyl 2-ethoxyacetate Chemical compound CCOCC(=O)OCC CKSRFHWWBKRUKA-UHFFFAOYSA-N 0.000 description 2
- 229940093499 ethyl acetate Drugs 0.000 description 2
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 description 2
- 229940117360 ethyl pyruvate Drugs 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 125000001046 glycoluril group Chemical class [H]C12N(*)C(=O)N(*)C1([H])N(*)C(=O)N2* 0.000 description 2
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- MLFHJEHSLIIPHL-UHFFFAOYSA-N isoamyl acetate Chemical compound CC(C)CCOC(C)=O MLFHJEHSLIIPHL-UHFFFAOYSA-N 0.000 description 2
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- 125000003866 trichloromethyl group Chemical group ClC(Cl)(Cl)* 0.000 description 1
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 1
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- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
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- FAYMLNNRGCYLSR-UHFFFAOYSA-M triphenylsulfonium triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F.C1=CC=CC=C1[S+](C=1C=CC=CC=1)C1=CC=CC=C1 FAYMLNNRGCYLSR-UHFFFAOYSA-M 0.000 description 1
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Classifications
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Description
第2観点として、式(1)のR3がベンゼン環、ナフタレン環、アントラセン環又はピレン環であり、R4が水素原子であり、nが0である第1観点に記載のレジスト下層膜形成組成物、
第3観点として、更に架橋剤を含む第1観点又は第2観点に記載のレジスト下層膜形成組成物、
第4観点として、更に酸及び/又は酸発生剤を含む第1観点乃至第3観点のいずれか一つに記載のレジスト下層膜形成組成物、
第5観点として、第1観点乃至第4観点のいずれか一つに記載のレジスト下層膜形成組成物を半導体基板上に塗布し焼成することによって得られるレジスト下層膜、
第6観点として、第1観点乃至第4観点のいずれか一つに記載のレジスト下層膜形成組成物を半導体基板上に塗布し焼成して下層膜を形成する工程を含む半導体の製造に用いるレジストパターンの形成方法、
第7観点として、半導体基板上に第1観点乃至第4観点のいずれか一つに記載のレジスト下層膜形成組成物により下層膜を形成する工程、その上にレジスト膜を形成する工程、光又は電子線の照射と現像によりレジストパターンを形成する工程、レジストパターンにより該下層膜をエッチングする工程、及びパターン化された下層膜により半導体基板を加工する工程を含む半導体装置の製造方法、
第8観点として、半導体基板に第1観点乃至第4観点のいずれか一つに記載のレジスト下層膜形成組成物により下層膜を形成する工程、その上にハードマスクを形成する工程、更にその上にレジスト膜を形成する工程、光又は電子線の照射と現像によりレジストパターンを形成する工程、レジストパターンによりハードマスクをエッチングする工程、パターン化されたハードマスクにより該下層膜をエッチングする工程、及びパターン化された下層膜により半導体基板を加工する工程を含む半導体装置の製造方法、
第9観点として、ハードマスクが無機物の蒸着によるものである第8観点に記載の製造方法、及び
第10観点として、下記式(5):
本発明のレジスト下層膜形成組成物には、基板からの反射を効率的に抑制する性能を付与することも可能であり、露光光の反射防止膜としての効果を併せ持つこともできる。
本発明のレジスト下層膜形成組成物により、レジストに近いドライエッチング速度の選択比、レジストに比べて小さいドライエッチング速度の選択比や半導体基板に比べて小さいドライエッチング速度の選択比を持つ、優れたレジスト下層膜を提供することができる。
そして、本発明のレジスト下層膜は、平坦化膜、レジスト下層膜、レジスト膜層の汚染防止膜、ドライエッチ選択性を有する膜として用いることができる。これにより、半導体製造のリソグラフィープロセスにおけるレジストパターン形成を、容易に、精度良く行うことができる。
本発明において上記のリソグラフィー用レジスト下層膜形成組成物は、上記ポリマーと溶剤を含む。そして、架橋剤と酸を含むことができ、必要に応じて酸発生剤、界面活性剤等の添加剤を含むことができる。この組成物の固形分は0.1〜70質量%、又は0.1〜60質量%である。固形分は、レジスト下層膜形成組成物から溶剤を除いた全成分の含有割合である。固形分中に上記ポリマーを1〜100質量%、1〜99.9質量%、50〜99.9質量%、50〜95質量%、又は50〜90質量%の割合で含有することができる。
本発明に用いるポリマーは、重量平均分子量が600〜1000000、又は600〜200000である。
縮合時の反応温度は、通常40℃〜200℃である。反応時間は、反応温度によって種々選択されるが、通常30分〜50時間程度である。
以上のようにして得られる重合体の重量平均分子量Mwは、通常400〜1000000、400〜200000、400〜50000、又は600〜10000である。
それらポリマーとしては、ポリアクリル酸エステル化合物、ポリメタクリル酸エステル化合物、ポリアクリルアミド化合物、ポリメタクリルアミド化合物、ポリビニル化合物、ポリスチレン化合物、ポリマレイミド化合物、ポリマレイン酸無水物、及びポリアクリロニトリル化合物が挙げられる。
式(2)中、R10及びR11はそれぞれ水素原子、炭素数1〜10のアルキル基、又は炭素数6〜20のアリール基であり、n10は1〜4の整数であり、n11は1〜(5−n10)の整数であり、(n10+n11)は2〜5の整数を示す。
式(3)中、R12は水素原子又は炭素数1〜10のアルキル基であり、R13は炭素数1〜10のアルキル基であり、n12は1〜4の整数であり、n13は0〜(4−n12)であり、(n12+n13)は1〜4の整数を示す。オリゴマー及びポリマーは繰り返し単位構造の数が2〜100、又は2〜50の範囲で用いることができる。
本発明におけるリソグラフィー用レジスト下層膜の上部に塗布されるフォトレジストとしてはネガ型、ポジ型いずれも使用でき、ノボラック樹脂と1,2−ナフトキノンジアジドスルホン酸エステルとからなるポジ型フォトレジスト、酸により分解してアルカリ溶解速度を上昇させる基を有するバインダーと光酸発生剤からなる化学増幅型フォトレジスト、アルカリ可溶性バインダーと酸により分解してフォトレジストのアルカリ溶解速度を上昇させる低分子化合物と光酸発生剤からなる化学増幅型フォトレジスト、酸により分解してアルカリ溶解速度を上昇させる基を有するバインダーと酸により分解してフォトレジストのアルカリ溶解速度を上昇させる低分子化合物と光酸発生剤からなる化学増幅型フォトレジスト、骨格にSi原子を有するフォトレジスト等があり、例えば、ロームアンドハーツ社製、商品名APEX−Eが挙げられる。
更に、本発明のリソグラフィー用レジスト下層膜材料は、プロセス条件によっては、光の反射を防止する機能と、更には基板とフォトレジストとの相互作用の防止或いはフォトレジストに用いられる材料又はフォトレジストへの露光時に生成する物質の基板への悪作用を防ぐ機能とを有する膜としての使用が可能である。
100mlナスフラスコにピロール(東京化成工業(株)製)6.0g、1−ナフトアルデヒド(東京化成工業(株)製)14.1g、p−トルエンスルホン酸一水和物(東京化成工業(株)製)1.8g、トルエン(関東化学(株)製)32.8gを入れた。その後フラスコ内を窒素置換した後、室温で約2時間撹拌した。反応終了後、テトラヒドロフラン(関東化学(株)製)15gで希釈した。希釈液をメタノール(関東化学(株)製)1300gに滴下し、再沈殿させた。得られた沈殿物を吸引ろ過し、ろ物をメタノールで洗浄後、85℃で一晩減圧乾燥しノボラック樹脂を16.4g得た。得られたポリマーは式(1−1)に相当した。GPCによりポリスチレン換算で測定される重量平均分子量Mwは、7,500であった。
200mlナスフラスコにピロール(東京化成工業(株)製)6.0g、9−アントラセンカルボキシアルデヒド(東京化成工業(株)製)18.6g、p−トルエンスルホン酸一水和物(東京化成工業(株)製)1.8g、トルエン(関東化学(株)製)61.6gを入れた。その後、フラスコ内を窒素置換した後、室温で撹拌しながらピロール(東京化成工業(株)製)6.0gを滴下した。滴下終了後、室温で約12時間撹拌した。反応終了後、反応溶液をヘキサン(関東化学(株)製)1200gに滴下し、再沈殿させた。得られた沈殿物を吸引ろ過し、ろ物をヘキサンで洗浄後、85℃で一晩減圧乾燥しノボラック樹脂を20.3g得た。得られたポリマーは式(1−2)に相当した。GPCによりポリスチレン換算で測定される重量平均分子量Mwは、2,000であった。
100mlナスフラスコにピロール(東京化成工業(株)製)2.0g、9−ピレンカルボキシアルデヒド(東京化成工業(株)製)7.0g、p−トルエンスルホン酸一水和物(東京化成工業(株)製)0.6g、トルエン(関東化学(株)製)28.6gを入れた。その後フラスコ内を窒素置換した後、室温で撹拌しながらピロール(東京化成工業(株)製)2.0gを滴下した。滴下終了後、室温で約1時間撹拌し、更に加熱して約22時間還流撹拌した。反応終了後、テトラヒドロフラン(関東化学(株)製)15gを加えて析出した固体を溶解させた。溶液をヘキサン(関東化学(株)製)1200gに滴下し、再沈殿させた。得られた沈殿物を吸引ろ過し、ろ物をヘキサンで洗浄後、85℃で一晩減圧乾燥しノボラック樹脂を6.9g得た。得られたポリマーは式(1−3)に相当した。GPCによりポリスチレン換算で測定される重量平均分子量Mwは、900であった。
100mlナスフラスコにピロール(東京化成工業(株)製)6.0g、4−ヒドロキシベンズアルデヒド(東京化成工業(株)製)10.9g、メタンスルホン酸(東京化成工業(株)製)0.17g、プロピレングリコールモノメチルエーテル51.3gを入れた。その後フラスコ内を窒素置換した後、室温で撹拌しながらピロール(東京化成工業(株)製)6.0gを滴下した。滴下終了後、加熱して約15時間還流撹拌した。反応終了後、イオン交換樹脂と接触させてメタンスルホン酸を除去し、固形分17.6%のノボラック樹脂溶液を66.7g得た。得られたポリマーは式(1−4)に相当した。GPCによりポリスチレン換算で測定される重量平均分子量Mwは、660であった。
200mlナスフラスコにピロール(東京化成工業(株)製)7.0g、1−ナフトアルデヒド(東京化成工業(株)製)13.4g、6−ヒドロキシ−2−ナフトアルデヒド(東京化成工業(株)製)3.7g、メタンスルホン酸(東京化成工業(株)製)0.41g、プロピレングリコールモノメチルエーテル57.3gを入れた。その後フラスコ内を窒素置換した後、室温で撹拌しながらピロール(東京化成工業(株)製)7.0gを滴下した。滴下終了後、室温で約14時間撹拌した。反応終了後、反応溶液をメタノール(関東化学(株)製)1600gに滴下し、再沈殿させた。得られた沈殿物を吸引ろ過し、ろ物をメタノールで洗浄後、85℃で一晩減圧乾燥しノボラック樹脂を11.9g得た。得られたポリマーは式(1−5)に相当した。GPCによりポリスチレン換算で測定される重量平均分子量Mwは、2,300であった。
100mlナスフラスコに1−メチルピロール(東京化成工業(株)製)6.0g、1−ナフトアルデヒド(東京化成工業(株)製)11.6g、メタンスルホン酸(東京化成工業(株)製)0.07g、プロピレングリコールモノメチルエーテルアセテート52.9gを入れた。その後フラスコ内を窒素置換した後、室温で撹拌しながら1−メチルピロール(東京化成工業(株)製)6.0gを滴下した。滴下終了後、室温で四日間撹拌した。反応終了後、反応溶液をメタノール(関東化学(株)製)1500gに滴下し、再沈殿させた。得られた沈殿物を吸引ろ過し、ろ物をメタノールで洗浄後、85℃で一晩減圧乾燥しノボラック樹脂を12.1g得た。得られたポリマーは式(1−6)に相当した。GPCによりポリスチレン換算で測定される重量平均分子量Mwは、2,200であった。
100mlナスフラスコに1−フェニルピロール(東京化成工業(株)製)6.0g、1−ナフトアルデヒド(東京化成工業(株)製)6.5g、プロピレングリコールモノメチルエーテルアセテート37.7gを入れた。その後フラスコ内を窒素置換した後、室温で撹拌しながらメタンスルホン酸(東京化成工業(株)製)0.04gを滴下した。滴下終了後、110℃に加熱して約17時間撹拌した。反応終了後、反応溶液をメタノール(関東化学(株)製)1000gに滴下し、再沈殿させた。得られた沈殿物を吸引ろ過し、ろ物をメタノールで洗浄後、85℃で一晩減圧乾燥しノボラック樹脂を9.5g得た。得られたポリマーは式(1−7)に相当した。GPCによりポリスチレン換算で測定される重量平均分子量Mwは、2,500であった。
100mlナスフラスコに1−フェニルピロール(東京化成工業(株)製)7.0g、4−ヒドロキシベンズアルデヒド(東京化成工業(株)製)6.0g、プロピレングリコールモノメチルエーテルアセテート30.4gを入れた。その後フラスコ内を窒素置換した後、室温で撹拌しながらメタンスルホン酸(東京化成工業(株)製)0.05g、を滴下した。滴下終了後、110℃に加熱して約17時間撹拌した。反応終了後、イオン交換樹脂と接触させてメタンスルホン酸を除去し、固形分24.5パーセントのノボラック樹脂溶液を42.4g得た。得られたポリマーは式(1−8)に相当した。GPCによりポリスチレン換算で測定される重量平均分子量Mwは、2,300であった。
窒素下、100ml四口フラスコにカルバゾール(10g、0.060mol、東京化成工業(株)製)、ベンズアルデヒド(6.41g、0.060mol、純正化学(株)製)、p−トルエンスルホン酸一水和物(1.19g、0.060mol、関東化学(株)製)を加え、1,4−ジオキサン(15g、関東化学(株)製)を加え撹拌し、100℃まで昇温し溶解させ重合を開始した。2時間後60℃まで放冷後、クロロホルム(50g、関東化学(株)製)を加え希釈し、メタノール(250g、関東化学(株)製)へ再沈殿させた。得られた沈殿物をろ過し、減圧乾燥機で60℃、10時間、更に120℃、24時間乾燥し、目的とする高分子化合物8.64gを得た。これは下記式(4−1)の単位構造を含むポリマーであった。高分子化合物(式(4−1))のGPCによるポリスチレン換算で測定される重量平均分子量Mwは4000、多分散度Mw/Mnは1.69であった。
合成例1で得た0.8gのポリマーに、プロピレングリコールモノメチルエーテルアセテート1.0g、プロピレングリコールモノメチルエーテル2.5g、シクロヘキサノン6.4g、架橋剤としてTMOM−BP(上記式(2−22)、本州化学工業(株)製)を0.16g、TAG2689を0.016g加えて溶解させ、多層膜によるリソグラフィープロセスに用いるレジスト下層膜形成組成物の溶液を調製した。
合成例2で得た2.0gのポリマーに、プロピレングリコールモノメチルエーテルアセテート9.7g、プロピレングリコールモノメチルエーテル6.5g、シクロヘキサノン16.2g、テトラメトキシメチルグリコールウリル0.4g、ピリジニウムパラトルエンスルホネート0.04g加えて溶解させ、多層膜によるリソグラフィープロセスに用いるレジスト下層膜形成組成物の溶液を調製した。
合成例3で得た0.8gのポリマーに、プロピレングリコールモノメチルエーテルアセテート1.0g、プロピレングリコールモノメチルエーテル2.5g、シクロヘキサノン6.4g、架橋剤としてTMOM−BP(上記式(2−22)、本州化学工業(株)製)を0.16g、TAG2689を0.016g加えて溶解させ、多層膜によるリソグラフィープロセスに用いるレジスト下層膜形成組成物の溶液を調製した。
合成例4で得た12.0gのポリマー溶液に、プロピレングリコールモノメチルエーテルアセテート4.6g、プロピレングリコールモノメチルエーテル6.3g、シクロヘキサノン2.3g、架橋剤としてTMOM−BP(上記式(2−22)、本州化学工業(株)製)を0.4g、ピリジニウムパラトルエンスルホネート0.03g加えて溶解させ、多層膜によるリソグラフィープロセスに用いるレジスト下層膜形成組成物の溶液を調製した。
合成例5で得た2.0gのポリマーに、プロピレングリコールモノメチルエーテルアセテート11.0g、プロピレングリコールモノメチルエーテル6.6g、シクロヘキサノン4.4g、架橋剤としてTMOM−BP(上記式(2−22)、本州化学工業(株)製)を0.4g、ピリジニウムパラトルエンスルホネート0.03g加えて溶解させ、多層膜によるリソグラフィープロセスに用いるレジスト下層膜形成組成物の溶液を調製した。
合成例6で得た1.5gのポリマーに、プロピレングリコールモノメチルエーテルアセテート11.5g、プロピレングリコールモノメチルエーテル3.3g、シクロヘキサノン1.6g、架橋剤としてTMOM−BP(上記式(2−22)、本州化学工業(株)製)を0.3g、ピリジニウムパラトルエンスルホネート0.02g加えて溶解させ、多層膜によるリソグラフィープロセスに用いるレジスト下層膜形成組成物の溶液を調製した。
合成例7で得た1.5gのポリマーに、プロピレングリコールモノメチルエーテルアセテート11.5g、プロピレングリコールモノメチルエーテル3.3g、シクロヘキサノン1.6g、架橋剤としてTMOM−BP(上記式(2−22)、本州化学工業(株)製)を0.3g、ピリジニウムパラトルエンスルホネート0.02g加えて溶解させ、多層膜によるリソグラフィープロセスに用いるレジスト下層膜形成組成物の溶液を調製した。
合成例8で得た12.0gのポリマー溶液に、プロピレングリコールモノメチルエーテルアセテート6.4g、プロピレングリコールモノメチルエーテル13.5g、シクロヘキサノン3.2g、架橋剤としてTMOM−BP(上記式(2−22)、本州化学工業(株)製)を0.6g、ピリジニウムパラトルエンスルホネート0.04g加えて溶解させ、多層膜によるリソグラフィープロセスに用いるレジスト下層膜形成組成物の溶液を調製した。
合成例4で得た12.0gのポリマー溶液に、プロピレングリコールモノメチルエーテルアセテート4.6g、プロピレングリコールモノメチルエーテル6.3g、シクロヘキサノン2.3g、テトラメトキシメチルグリコールウリル0.4g、ピリジニウムパラトルエンスルホネート0.03g加えて溶解させ、多層膜によるリソグラフィープロセスに用いるレジスト下層膜形成組成物の溶液を調製した。
上記比較合成例1で得た高分子化合物(式(4−1))の1.0gに、テトラメトキシメチルグリコールウリル0.2g、ピリジニウムパラトルエンスルホネート0.02g、メガファックR−30(大日本インキ化学(株)製、商品名)0.003g、プロピレングリコールモノメチルエーテル2.3g、プロピレングリコールモノメチルエーテルアセテート4.6g、シクロヘキサノン16.3gを混合して溶液とした。その後、孔径0.10μmのポリエチレン製ミクロフィルターを用いてろ過し、更に、孔径0.05μmのポリエチレン製ミクロフィルターを用いてろ過して、多層膜によるリソグラフィープロセスに用いるレジスト下層膜形成組成物の溶液を調製した。
実施例1〜9、及び比較例1で調製した各レジスト下層膜形成組成物溶液を、スピンコーターを用いてシリコンウェハー上にそれぞれ塗布した。ホットプレート上で250℃1分間焼成し、レジスト下層膜(膜厚0.05μm)を形成した。そして、これらのレジスト下層膜を、分光エリプソメーターを用いて波長193nmでの屈折率(n値)及び光学吸光係数(k値、減衰係数とも呼ぶ)を測定した。結果を表1に示した。
実施例1〜9、及び比較例1で調製した各レジスト下層膜形成組成物溶液を、スピナーによりシリコンウェハー上に塗布した。ホットプレート上で250℃の温度で1分間加熱し、レジスト下層膜(膜厚0.2μm)を形成した。そして、これらのレジスト下層膜を、フォトレジストに使用する溶剤である、乳酸エチル、プロピレングリコールモノメチルエーテル及びプロピレングリコールモノメチルエーテルアセテートに浸漬し、その溶剤に不溶であることを確認した。
実施例1〜9、及び比較例1で得た本発明のリソグラフィー用下層膜形成組成物溶液を、スピンコーターにより、ホール(直径0.13μm、深さ0.7μm)を有するSiO2付きウェハー基板上に塗布した。パターンは、ホール中心から隣のホール中心までの間隔が、当該ホールの直径の1倍であるパターンである。
ドライエッチング速度の測定には、下記のエッチング装置及びエッチングガスを用いた。
エッチング装置:RIE−10NR(サムコ(株)製)
エッチングガス:CF4
Claims (9)
- 下記式(1):
- 式(1)のR3がベンゼン環、ナフタレン環、アントラセン環又はピレン環であり、R4
が水素原子であり、nが0である請求項1に記載のレジスト下層膜形成組成物。 - 更に架橋剤を含む請求項1又は請求項2に記載のレジスト下層膜形成組成物。
- 更に酸及び/又は酸発生剤を含む請求項1乃至請求項3のいずれか1項に記載のレジスト下層膜形成組成物。
- 請求項1乃至請求項4のいずれか1項に記載のレジスト下層膜形成組成物を半導体基板上に塗布し焼成することによって得られるレジスト下層膜。
- 請求項1乃至請求項4のいずれか1項に記載のレジスト下層膜形成組成物を半導体基板上に塗布し焼成して下層膜を形成する工程を含む半導体の製造に用いるレジストパターンの形成方法。
- 半導体基板上に請求項1乃至請求項4のいずれか1項に記載のレジスト下層膜形成組成物により下層膜を形成する工程、その上にレジスト膜を形成する工程、光又は電子線の照射と現像によりレジストパターンを形成する工程、レジストパターンにより該下層膜をエッチングする工程、及びパターン化された下層膜により半導体基板を加工する工程を含む半導体装置の製造方法。
- 半導体基板に請求項1乃至請求項4のいずれか1項に記載のレジスト下層膜形成組成物により下層膜を形成する工程、その上にハードマスクを形成する工程、更にその上にレジスト膜を形成する工程、光又は電子線の照射と現像によりレジストパターンを形成する工程、レジストパターンによりハードマスクをエッチングする工程、パターン化されたハードマスクにより該下層膜をエッチングする工程、及びパターン化された下層膜により半導体基板を加工する工程を含む半導体装置の製造方法。
- ハードマスクが無機物の蒸着によるものである請求項8に記載の製造方法。
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KR102316585B1 (ko) * | 2015-03-10 | 2021-10-26 | 삼성전자주식회사 | 하드마스크용 중합체, 상기 중합체를 포함하는 하드마스크용 조성물, 및 이를 이용한 반도체 소자의 패턴 형성 방법 |
KR101884447B1 (ko) | 2015-07-06 | 2018-08-01 | 삼성에스디아이 주식회사 | 모노머, 유기막 조성물, 유기막, 및 패턴형성방법 |
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CN105324719A (zh) * | 2013-06-25 | 2016-02-10 | 日产化学工业株式会社 | 包含吡咯酚醛清漆树脂的抗蚀剂下层膜形成用组合物 |
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CN105324719A (zh) | 2016-02-10 |
WO2014208499A1 (ja) | 2014-12-31 |
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KR20160023671A (ko) | 2016-03-03 |
TW201512304A (zh) | 2015-04-01 |
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JPWO2014208499A1 (ja) | 2017-02-23 |
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