KR101786153B1 - 레지스트 재료 및 이것을 사용한 패턴 형성 방법 - Google Patents
레지스트 재료 및 이것을 사용한 패턴 형성 방법 Download PDFInfo
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- KR101786153B1 KR101786153B1 KR1020130157050A KR20130157050A KR101786153B1 KR 101786153 B1 KR101786153 B1 KR 101786153B1 KR 1020130157050 A KR1020130157050 A KR 1020130157050A KR 20130157050 A KR20130157050 A KR 20130157050A KR 101786153 B1 KR101786153 B1 KR 101786153B1
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- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical compound [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 description 14
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 12
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- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 description 5
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
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- QUKGYYKBILRGFE-UHFFFAOYSA-N benzyl acetate Chemical compound CC(=O)OCC1=CC=CC=C1 QUKGYYKBILRGFE-UHFFFAOYSA-N 0.000 description 4
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- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical class I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 3
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- QEGNUYASOUJEHD-UHFFFAOYSA-N 1,1-dimethylcyclohexane Chemical compound CC1(C)CCCCC1 QEGNUYASOUJEHD-UHFFFAOYSA-N 0.000 description 2
- RMZFDOQQBPMKNQ-UHFFFAOYSA-N 1-(1-naphthalen-1-ylethenyl)naphthalene Chemical group C1=CC=C2C(C(C=3C4=CC=CC=C4C=CC=3)=C)=CC=CC2=C1 RMZFDOQQBPMKNQ-UHFFFAOYSA-N 0.000 description 2
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- BHXIWUJLHYHGSJ-UHFFFAOYSA-N ethyl 3-ethoxypropanoate Chemical compound CCOCCC(=O)OCC BHXIWUJLHYHGSJ-UHFFFAOYSA-N 0.000 description 2
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- 150000002576 ketones Chemical class 0.000 description 2
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- BDJSOPWXYLFTNW-UHFFFAOYSA-N methyl 3-methoxypropanoate Chemical compound COCCC(=O)OC BDJSOPWXYLFTNW-UHFFFAOYSA-N 0.000 description 2
- RPUSRLKKXPQSGP-UHFFFAOYSA-N methyl 3-phenylpropanoate Chemical compound COC(=O)CCC1=CC=CC=C1 RPUSRLKKXPQSGP-UHFFFAOYSA-N 0.000 description 2
- QPJVMBTYPHYUOC-UHFFFAOYSA-N methyl benzoate Chemical compound COC(=O)C1=CC=CC=C1 QPJVMBTYPHYUOC-UHFFFAOYSA-N 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 2
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methylcyclopentane Chemical compound CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 2
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N methylene hexane Natural products CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- VKCYHJWLYTUGCC-UHFFFAOYSA-N nonan-2-one Chemical compound CCCCCCCC(C)=O VKCYHJWLYTUGCC-UHFFFAOYSA-N 0.000 description 2
- SJYNFBVQFBRSIB-UHFFFAOYSA-N norbornadiene Chemical compound C1=CC2C=CC1C2 SJYNFBVQFBRSIB-UHFFFAOYSA-N 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- 238000010943 off-gassing Methods 0.000 description 2
- 125000005188 oxoalkyl group Chemical group 0.000 description 2
- AQIXEPGDORPWBJ-UHFFFAOYSA-N pentan-3-ol Chemical compound CCC(O)CC AQIXEPGDORPWBJ-UHFFFAOYSA-N 0.000 description 2
- MDHYEMXUFSJLGV-UHFFFAOYSA-N phenethyl acetate Chemical compound CC(=O)OCCC1=CC=CC=C1 MDHYEMXUFSJLGV-UHFFFAOYSA-N 0.000 description 2
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- 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
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- G—PHYSICS
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- 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
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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
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- G03F7/0045—Photosensitive materials with organic non-macromolecular light-sensitive compounds not otherwise provided for, e.g. dissolution inhibitors
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- G—PHYSICS
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- 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
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- G03F7/0046—Photosensitive materials with perfluoro compounds, e.g. for dry lithography
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- G—PHYSICS
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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
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- G03F7/039—Macromolecular compounds which are photodegradable, e.g. positive electron resists
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- G—PHYSICS
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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
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
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- G—PHYSICS
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- 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
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Abstract
(R1은 단결합 또는 알킬렌기이고, R2는 불소 원자 또는 불소 원자를 함유하는 알킬기, 페닐기, 또는 알킬 치환된 페닐기이다. X1, X2는 페닐렌기 또는 나프틸렌기이다. m은 1 또는 2이다. M은 CH2, O 또는 S이다. 0<p<1.0, 0≤(q-1)<1.0, 0≤(q-2)<1.0, 0≤(q-3)<1.0, 0<(q-1)+(q-2)+(q-3)<1.0임)
본 발명의 레지스트 재료를 사용해서 형성한 포토레지스트막은, EUV 노광에서의 레지스트막으로부터의 아웃 가스의 발생을 저감시킬 수 있고, 레지스트막 표면을 친수성화함으로써, 현상 후 레지스트막 상의 블롭 결함의 발생을 방지할 수 있다.
Description
Claims (9)
- 산에 의해 알칼리 용해성이 향상되는 베이스 수지가 되는 고분자 화합물과, 고분자 첨가제로서 하기 일반식 (1)로 표시되는 고분자 화합물을 포함하는 것을 특징으로 하는 레지스트 재료.
(식 중, R1은 단결합, 또는 탄소수 1 내지 4의 직쇄상의 알킬렌기 또는 탄소수 2 내지 4의 분지상의 알킬렌기이고, R2는 불소 원자, 또는 각각 적어도 1개의 불소 원자를 함유하는 탄소수 1 내지 6의 직쇄상의 알킬기, 탄소수 3 내지 6의 분지상 또는 환상의 알킬기, 페닐기, 또는 알킬 치환된 페닐기이다. R3, R4는 동일하거나 또는 상이한 수소 원자, 히드록시기, 탄소수 1 내지 10의 직쇄상의 알킬기, 탄소수 3 내지 10의 분지상 또는 환상의 알킬기, 알콕시기, 아실옥시기, 탄소수 2 내지 6의 알케닐기, 탄소수 6 내지 10의 아릴기, 시아노기, 니트로기, 아미노기, 또는 할로겐 원자이며, X1, X2는 페닐렌기 또는 나프틸렌기이다. m은 1 또는 2이다. R5, R6은 수소 원자, 할로겐 원자, 또는 탄소수 1 내지 4의 직쇄상의 알킬기, 탄소수 3 내지 4의 분지상의 알킬기, 알콕시기, 아실옥시기, 히드록시기, 카르복실기, 또는 알콕시카르보닐기이다. M은 메틸렌기, 산소 원자 또는 황 원자이다. 0<p<1.0, 0≤(q-1)<1.0, 0≤(q-2)<1.0, 0≤(q-3)<1.0, 0<(q-1)+(q-2)+(q-3)<1.0임) - 제1항에 있어서, 화학 증폭 포지티브형 레지스트 재료인 것을 특징으로 하는 레지스트 재료.
- 제2항에 있어서, 상기 베이스 수지로서의 고분자 화합물이 산 불안정기를 갖는 반복 단위, 및 히드록시기 및 락톤환 중에서 선택되는 하나 이상의 밀착성 기를 갖는 반복 단위를 포함하는 것임을 특징으로 하는 레지스트 재료.
- 제3항에 있어서, 상기 베이스 수지로서의 고분자 화합물에 있어서, 산 불안정기를 갖는 반복 단위가 하기 일반식 (2)로 표시되는 반복 단위 a1, a2에서 선택되는 1개 이상의 반복 단위이며, 고분자 화합물의 중량 평균 분자량이 1,000 내지 500,000의 범위인 것을 특징으로 하는 레지스트 재료.
(식 중, R10, R12는 각각 독립적으로 수소 원자 또는 메틸기를 나타내고, R11, R13은 산 불안정기를 나타낸다. Y1은 단결합, 에스테르기(-COO-기), 락톤환, 페닐렌기 또는 나프틸렌기 중 어느 1종 또는 2종 이상을 갖는 탄소수 1 내지 12의 연결기, 페닐렌기 또는 나프틸렌기이다. Y2는 단결합, 에스테르기(-COO-기) 또는 아미드기(-CONH-기)이다. 0≤a1≤0.9, 0≤a2≤0.9, 0<a1+a2<1.0임) - 제4항에 있어서, 상기 베이스 수지로서의 고분자 화합물이, 상기 일반식 (2)로 표시되는 반복 단위 a1 또는 a2 외에, 하기 일반식 (3)으로 표시되는 술포늄염 b1 내지 b3에서 선택되는 1개 이상의 반복 단위를 갖는 중량 평균 분자량이 1,000 내지 500,000의 범위인 고분자 화합물인 것을 특징으로 하는 레지스트 재료.
(식 중, R020, R024, R028은 수소 원자 또는 메틸기이고, R021은 단결합, 페닐렌기, -O-R033- 또는 -C(=O)-Y-R033-이다. Y는 산소 원자 또는 NH이고, R033은 탄소수 1 내지 6의 직쇄상의 알킬렌기, 탄소수 2 내지 6의 분지상의 알킬렌기, 탄소수 3 내지 6의 환상의 알킬렌기, 알케닐렌기 또는 페닐렌기이며, 카르보닐기(-CO-), 에스테르기(-COO-), 에테르기(-O-) 또는 히드록시기를 포함하고 있을 수도 있다. R022, R023, R025, R026, R027, R029, R030, R031은 동일하거나 또는 상이한 탄소수 1 내지 12의 직쇄상의 알킬기, 또는 탄소수 3 내지 12의 분지상 또는 환상의 알킬기이며, 카르보닐기, 에스테르기 또는 에테르기를 포함하고 있을 수도 있고, 또는 탄소수 6 내지 12의 아릴기, 탄소수 7 내지 20의 아르알킬기 또는 티오페닐기를 나타낸다. A1은 단결합, -A0-C(=O)-O-, -A0-O- 또는 -A0-O-C(=O)-이고, A0은 탄소수 1 내지 12의 직쇄상의 알킬렌기, 탄소수 2 내지 12의 분지상의 알킬렌기, 또는 탄소수 3 내지 12의 환상의 알킬렌기이며, 카르보닐기, 에스테르기 또는 에테르기를 포함하고 있을 수도 있다. A2는 수소 원자 또는 CF3기이다. Z1은 단결합, 메틸렌기, 에틸렌기, 페닐렌기, 불소화된 페닐렌기, -O-R032-, 또는 -C(=O)-Z2-R032-이다. Z2는 산소 원자 또는 NH이고, R032는 탄소수 1 내지 6의 직쇄상의 알킬렌기, 탄소수 2 내지 6의 분지상의 알킬렌기, 탄소수 3 내지 6의 환상의 알킬렌기, 페닐렌기, 불소화된 페닐렌기, 트리플루오로메틸기로 치환된 페닐렌기, 또는 알케닐렌기이며, 카르보닐기, 에스테르기, 에테르기 또는 히드록시기를 포함하고 있을 수도 있다. M-는 비친핵성 대향 이온을 나타낸다. 0≤b1≤0.3, 0≤b2≤0.3, 0≤b3≤0.3, 0<b1+b2+b3≤0.3임) - 제1항 내지 제5항 중 어느 한 항에 있어서, 유기 용제, 염기성 화합물, 용해 제어제, 계면 활성제 중 어느 하나 이상을 더 함유하는 것임을 특징으로 하는 레지스트 재료.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 산에 의해 알칼리 용해성이 향상되는 베이스 수지가 되는 고분자 화합물 100질량부에 대하여, 고분자 첨가제를 0.1 내지 50질량부의 범위로 포함하는 것을 특징으로 하는 레지스트 재료.
- 제1항 내지 제5항 중 어느 한 항에 기재된 레지스트 재료를 기판 상에 도포하는 공정과, 가열 처리 후 고에너지선으로 노광하는 공정과, 현상액을 사용하여 현상하는 공정을 포함하는 것을 특징으로 하는 패턴 형성 방법.
- 제8항에 있어서, 상기 고에너지선이 전자빔 또는 파장 3 내지 15nm 범위의 연 X선인 것을 특징으로 하는 패턴 형성 방법.
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