KR102291481B1 - 술포늄 화합물, 포지티브형 레지스트 조성물, 및 레지스트 패턴 형성 방법 - Google Patents
술포늄 화합물, 포지티브형 레지스트 조성물, 및 레지스트 패턴 형성 방법 Download PDFInfo
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- KR102291481B1 KR102291481B1 KR1020190110332A KR20190110332A KR102291481B1 KR 102291481 B1 KR102291481 B1 KR 102291481B1 KR 1020190110332 A KR1020190110332 A KR 1020190110332A KR 20190110332 A KR20190110332 A KR 20190110332A KR 102291481 B1 KR102291481 B1 KR 102291481B1
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- -1 Sulfonium compound Chemical class 0.000 title claims abstract description 140
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- 239000002253 acid Substances 0.000 claims description 118
- 229910052799 carbon Inorganic materials 0.000 claims description 40
- 229910052739 hydrogen Inorganic materials 0.000 claims description 39
- 239000001257 hydrogen Substances 0.000 claims description 39
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 29
- 125000005842 heteroatom Chemical group 0.000 claims description 29
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 26
- 239000000758 substrate Substances 0.000 claims description 26
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- 239000011737 fluorine Substances 0.000 claims description 25
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 13
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- 125000004434 sulfur atom Chemical group 0.000 claims description 13
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 13
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- CSYSRRCOBYEGPI-UHFFFAOYSA-N diazo(sulfonyl)methane Chemical compound [N-]=[N+]=C=S(=O)=O CSYSRRCOBYEGPI-UHFFFAOYSA-N 0.000 claims description 2
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical class I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims description 2
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- LZCLXQDLBQLTDK-UHFFFAOYSA-N ethyl 2-hydroxypropanoate Chemical compound CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 description 8
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- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 7
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- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical group C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 6
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- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 4
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C311/00—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
- C07C311/01—Sulfonamides having sulfur atoms of sulfonamide groups bound to acyclic carbon atoms
- C07C311/02—Sulfonamides having sulfur atoms of sulfonamide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
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Abstract
Description
도 2는 실시예 1-2-3의 화합물 Q-2의 1H-NMR 스펙트럼을 나타내는 도면이다.
도 3은 실시예 1-3-3의 화합물 Q-3의 1H-NMR 스펙트럼을 나타내는 도면이다.
Claims (18)
- (A) 제1항의 술포늄 화합물을 함유하는 켄처를 포함하는 포지티브형 레지스트 조성물.
- 제2항에 있어서, (B) 산 불안정기에 의해 보호된 산성 작용기를 갖는 단위를 포함하고, 산의 작용 하에 분해되어 알칼리 현상액 중에서의 용해도가 증대되는 폴리머를 함유하는 베이스 폴리머를 더 포함하는 포지티브형 레지스트 조성물.
- 제3항에 있어서, 상기 폴리머는 하기 식 (B1)∼(B3)을 갖는 반복 단위로부터 선택되는 적어도 1종의 반복 단위를 포함하는 것인 포지티브형 레지스트 조성물:
식 중,
RA는 수소, 불소, 메틸 또는 트리플루오로메틸이고,
R11은 각각 독립적으로 할로겐, 임의로 할로겐화된 C2-C8 아실옥시기, 임의로 할로겐화된 C1-C6 알킬기, 또는 임의로 할로겐화된 C1-C6 알콕시기이며,
R12 및 R13은 각각 독립적으로 할로겐, 아세톡시기, 임의로 할로겐화된 C2-C8 아실옥시기, 임의로 할로겐화된 C1-C8 알킬기, 임의로 할로겐화된 C1-C8 알콕시기, 또는 임의로 할로겐화된 C2-C8 알킬카르보닐옥시기이고,
A1은 단결합, 또는 C1-C10 알칸디일기이며, 여기서 탄소-탄소 결합에 에테르 결합이 개재되어 있을 수 있고, t1은 0 또는 1이며, x1은 0∼2의 정수이고, a1은 0≤a1≤5+2x1-a2를 만족하는 정수이며, a2는 1∼3의 정수이고, b1은 0∼5의 정수이며, b2는 1∼3의 정수이고, 이때 1≤b1+b2≤6을 만족하며, c1은 0∼3의 정수이고, c2는 1~3의 정수이며, 이때 1≤c1+c2≤4를 만족한다. - 제3항에 있어서, 상기 폴리머는 하기 식 (B4)를 갖는 반복 단위를 더 포함하는 것인 포지티브형 레지스트 조성물:
식 중,
RA는 수소, 불소, 메틸 또는 트리플루오로메틸이고,
R14는 각각 독립적으로 할로겐, 임의로 할로겐화된 C2-C8 아실옥시기, 임의로 할로겐화된 C1-C6 알킬기, 또는 임의로 할로겐화된 C1-C6 알콕시기이며,
A2는 단결합, 또는 C1-C10 알칸디일기이고, 여기서 탄소-탄소 결합에 에테르 결합이 개재되어 있을 수 있으며, t2는 0 또는 1이고, x2는 0∼2의 정수이며, d1은 0≤d1≤5+2x2-d3을 만족하는 정수이고, d2는 0 또는 1이며, d3은 1∼3의 정수이고, d3이 1인 경우, X는 산 불안정기이며, d3이 2 또는 3인 경우, X는 각각 독립적으로 수소 또는 산 불안정기이지만, 적어도 하나의 X는 산 불안정기이다. - 제3항에 있어서, 상기 폴리머는 하기 식 (B5)∼(B7)을 갖는 반복 단위로부터 선택되는 적어도 1종의 반복 단위를 더 포함하는 것인 포지티브형 레지스트 조성물:
식 중,
RA는 수소, 불소, 메틸 또는 트리플루오로메틸이고,
R15 및 R16은 각각 독립적으로 할로겐, 아세톡시기, 임의로 할로겐화된 C2-C8 아실옥시기, 임의로 할로겐화된 C1-C8 알킬기, 임의로 할로겐화된 C1-C8 알콕시기, 또는 임의로 할로겐화된 C2-C8 알킬카르보닐옥시기이며,
R17은 아세틸기, 아세톡시기, C1-C20 알킬기, C1-C20 알콕시기, C2-C20 아실옥시기, C2-C20 알콕시알킬기, C2-C20 알킬티오알킬기, 할로겐 원자, 니트로기, 또는 시아노기이고,
A3은 단결합, 또는 C1-C10 알칸디일기이며, 여기서 탄소-탄소 결합에 에테르 결합이 개재되어 있을 수 있고, e는 0∼6의 정수이며, f는 0∼4의 정수이고, g는 0∼5의 정수이며, t3은 0 또는 1이고, x3은 0∼2의 정수이다. - 제3항에 있어서, 상기 폴리머는 하기 식 (B8)∼(B11)을 갖는 반복 단위로부터 선택되는 적어도 1종의 반복 단위를 더 포함하는 것인 포지티브형 레지스트 조성물:
식 중,
RB는 각각 독립적으로 수소 또는 메틸이고,
Z1은 단결합, 페닐렌기, -O-Z11-, -C(=O)-O-Z11- 또는 -C(=O)-NH-Z11-이며, Z11은 C1-C6 알칸디일기, C2-C6 알켄디일기, 또는 페닐렌기이고, 카르보닐기, 에스테르 결합, 에테르 결합 또는 히드록시기를 함유하고 있을 수 있으며,
Z2는 단결합, 또는 -Z21-C(=O)-O-이고, Z21은 헤테로 원자를 함유할 수 있는 C1-C20 2가 탄화수소기이며,
Z3은 단결합, 메틸렌, 에틸렌, 페닐렌, 불소화된 페닐렌, -O-Z31-, -C(=O)-O-Z31- 또는 -C(=O)-NH-Z31-이고, Z31은 C1-C6 알칸디일기, C2-C6 알켄디일기, 또는 페닐렌기이며, 카르보닐기, 에스테르 결합, 에테르 결합 또는 히드록시기를 함유하고 있을 수 있고,
Z4는 단결합, 또는 헤테로 원자를 함유할 수 있는 C1-C30 2가 탄화수소기이며, t4는 0 또는 1이지만, Z4가 단결합인 경우, t4는 0이고,
R21∼R31은 각각 독립적으로 헤테로 원자를 함유할 수 있는 C1-C20 1가 탄화수소기이거나, R21과 R22는 서로 결합하여 이들이 결합하는 황 원자와 고리를 형성할 수 있거나, 또는 R23, R24 및 R25 중 어느 2개, R26, R27 및 R28 중 어느 2개, 또는 R29, R30 및 R31 중 어느 2개가 서로 결합하여 이들이 결합하는 황 원자와 고리를 형성할 수 있으며,
R은 수소 또는 트리플루오로메틸이고,
M-은 비구핵성 대향 이온이다. - 제2항에 있어서, (C) 하기 식 (C1)을 갖는 반복 단위와, 하기 식 (C2)∼(C5)를 갖는 반복 단위로부터 선택되는 적어도 1종의 반복 단위를 포함하는 불소화된 폴리머를 더 포함하는 포지티브형 레지스트 조성물:
식 중,
RC는 각각 독립적으로 수소 또는 메틸이고, RD는 각각 독립적으로 수소, 불소, 메틸 또는 트리플루오로메틸이며, R41은 수소, 또는 탄소-탄소 결합에 헤테로 원자 함유기가 개재되어 있을 수 있는 직쇄상 또는 분기상의 C1-C5 1가 탄화수소기이고, R42는 탄소-탄소 결합에 헤테로 원자 함유기가 개재되어 있을 수 있는 직쇄상 또는 분기상의 C1-C5 1가 탄화수소기이며, R43a, R43b, R45a 및 R45b는 각각 독립적으로 수소, 또는 C1-C10 알킬기이고, R44, R46, R47 및 R48은 각각 독립적으로 수소, C1-C15 1가 탄화수소기 또는 불소화 1가 탄화수소기, 또는 산 불안정기이며, 단, R44, R46, R47 및 R48로 표시되는 1가 탄화수소기 또는 불소화 1가 탄화수소기에서, 탄소-탄소 결합에, 에테르 결합 또는 카르보닐기가 개재되어 있을 수 있고, X1은 단결합, -C(=O)-O- 또는 -C(=O)-NH-이며, X2는 C1-C20 (m+1)가의 탄화수소기 또는 불소화 탄화수소기이고, n1은 1∼3의 정수이며, n2는 0≤n2≤5+2n3-n1을 만족하는 정수이고, n3은 0 또는 1이며, m은 1∼3의 정수이다. - 제2항에 있어서, (D) 유기 용제를 더 포함하는 포지티브형 레지스트 조성물.
- 제2항에 있어서, (E) 광산 발생제를 더 포함하는 포지티브형 레지스트 조성물.
- 기판 상에, 제2항의 포지티브형 레지스트 조성물을 적용하여 레지스트막을 형성하는 공정,
고에너지선에 상기 레지스트막을 패턴으로 노광하는 공정, 및
알칼리 현상액에서 상기 레지스트막을 현상하여 레지스트 패턴을 형성하는 공정
을 포함하는 레지스트 패턴 형성 방법. - 제11항에 있어서, 상기 고에너지선이 EUV 또는 EB인 레지스트 패턴 형성 방법.
- 제11항에 있어서, 상기 기판이 규소 함유 재료의 최표면을 갖는 것인 레지스트 패턴 형성 방법.
- 제11항에 있어서, 상기 기판이 포토마스크 블랭크인 레지스트 패턴 형성 방법.
- 제2항의 포지티브형 레지스트 조성물을 도포한 포토마스크 블랭크.
- 제1항에 있어서, p, q 및 r이 0인 술포늄 화합물.
- 제10항에 있어서, (E) 광산발생제가 술포늄염, 요오드늄염, 술포닐디아조메탄, N-술포닐옥시이미드, 옥심-O-술포네이트형 산발생제인 포지티브형 레지스트 조성물.
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