KR100880521B1 - 평탄화제를 이용한 금속 전해 도금 방법 - Google Patents
평탄화제를 이용한 금속 전해 도금 방법 Download PDFInfo
- Publication number
- KR100880521B1 KR100880521B1 KR1020050118660A KR20050118660A KR100880521B1 KR 100880521 B1 KR100880521 B1 KR 100880521B1 KR 1020050118660 A KR1020050118660 A KR 1020050118660A KR 20050118660 A KR20050118660 A KR 20050118660A KR 100880521 B1 KR100880521 B1 KR 100880521B1
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- South Korea
- Prior art keywords
- copper
- electrolytic plating
- electroplating method
- electrodeposition
- seconds
- Prior art date
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- 238000009713 electroplating Methods 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 71
- 239000002184 metal Substances 0.000 title 1
- 239000010949 copper Substances 0.000 claims abstract description 111
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 108
- 229910052802 copper Inorganic materials 0.000 claims abstract description 108
- 238000004070 electrodeposition Methods 0.000 claims abstract description 45
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 42
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 38
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000012964 benzotriazole Substances 0.000 claims abstract description 32
- LMPMFQXUJXPWSL-UHFFFAOYSA-N 3-(3-sulfopropyldisulfanyl)propane-1-sulfonic acid Chemical compound OS(=O)(=O)CCCSSCCCS(O)(=O)=O LMPMFQXUJXPWSL-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 22
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 22
- 229910000365 copper sulfate Inorganic materials 0.000 claims abstract description 21
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 21
- 239000011780 sodium chloride Substances 0.000 claims abstract description 19
- 238000000151 deposition Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 34
- 239000000758 substrate Substances 0.000 claims description 25
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 239000000654 additive Substances 0.000 claims description 15
- 230000000996 additive effect Effects 0.000 claims description 13
- 239000003637 basic solution Substances 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 10
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 10
- 239000012498 ultrapure water Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000002585 base Substances 0.000 claims description 6
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 claims description 2
- -1 sulfopropyl Chemical group 0.000 claims description 2
- 239000010409 thin film Substances 0.000 abstract description 28
- 239000000126 substance Substances 0.000 abstract description 7
- 230000008021 deposition Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000007517 polishing process Methods 0.000 abstract description 4
- 239000004065 semiconductor Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000003112 inhibitor Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229940075397 calomel Drugs 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- PXQLVRUNWNTZOS-UHFFFAOYSA-N sulfanyl Chemical class [SH] PXQLVRUNWNTZOS-UHFFFAOYSA-N 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/38—Electroplating: Baths therefor from solutions of copper
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
Description
구리 전해 도금 방법(A) | 구리 전해 도금 방법(B) | ||||
전기 전착 | 후기 전착 | 전기 전착 | 후기 전착 | ||
전착 시간 (s) | 5 ~ 50 | 140 | 5 ~ 50 | 140 | |
평탄제 BTA | - | 0.01 ~ 5 mM | 0.01 ~ 5 mM | 0.01 ~ 5 mM | |
첨가제 | PEG | 88 μM | - | 88 μM | 88 μM |
Cl- | 1 mM | - | 1 mM | 1 mM | |
SPS | 50 μM | - | 0.01 ~1 mM | 0.01 ~1 mM |
Claims (7)
- 삭제
- 황산구리, 황산, 폴리에틸렌글리콜, 염화나트륨, 비스(3-설포프로필)디설파이드를 기본 조성으로 하는 구리 전해 도금 방법에 있어서,평탄제로 벤조트리아졸을 사용하여 후기 전착 또는 전 및 후기 전착하는 것을 특징으로 하는 구리 전해 도금 방법.
- 제 2항에 있어서,상기 구리 전해 도금 방법은(ⅰ) 황산구리, 황산으로 이루어지는 기본 용액에 폴리에틸렌글리콜, 염화나트륨, 비스(3-설포프로필)디설파이드를 첨가한 구리 전해 도금 용액에서 5 내지 50 초간 기판을 전기 전착하는 단계;(ⅱ) 상기 전기 전착된 기판을 초순수로 1 내지 5 초간 세척하고 질소 가스로 물기를 제거하는 단계;(ⅲ) 상기 기본 용액에 벤조트리아졸을 첨가하고, 상기 물기가 제거된 기판 을 140 초간 후기 전착하는 단계; 및(ⅳ) 상기 후기 전착된 기판을 초순수로 5 내지 10 초간 세척하고 질소 가스로 물기를 제거하는 단계;를 포함하여 이루어지는 방법(A)인 것을 특징으로 하는 구리 전해 도금 방법.
- 제 2항에 있어서,상기 구리 전해 도금 방법은(ⅰ) 황산구리, 황산으로 이루어지는 기본 용액에 폴리에틸렌글리콜, 염화나트륨, 비스(3-설포프로필)디설파이드 및 벤조트리아졸을 첨가한 구리 전해 도금 용액에서 5 내지 50 초간 기판을 전기 전착하는 단계;(ⅱ) 상기 전기 전착된 기판을 초순수로 1 내지 5초간 세척하고 질소 가스로 물기를 제거하는 단계;(ⅲ) 상기 물기가 제거된 기판을 상기 (ⅰ)의 구리 전해 도금 용액으로 140 초간 후기 전착하는 단계; 및(ⅳ) 상기 후기 전착된 기판을 초순수로 5 내지 10 초간 세척하고 질소 가스로 물기를 제거하는 단계;를 포함하여 이루어지는 방법(B)인 것을 특징으로 하는 구리 전해 도금 방법.
- 제 3항에 있어서,상기 구리 전해 도금 방법(A)는 황산구리 0.25 M, 황산 1 M로 이루어진 기본 용액에, 첨가제로 폴리에틸렌글리콜 88 μM, 염화나트륨 1 mM, 비스(3-설포프로필)디설파이드 50 μM을 포함하는 구리 전해 도금 용액으로 전기 전착을 하고, 상기 기본 용액에 평탄제로 벤조트리아졸 0.01 내지 5 mM을 포함하는 구리 전해 도금 용액을 사용하여 후기 전착을 하는 것을 특징으로 하는 구리 전해 도금 방법.
- 제 4항에 있어서,상기 구리 전해 도금 방법(B)는 황산구리 0.25 M, 황산 1 M로 이루어진 기본 용액에, 첨가제로 폴리에틸렌글리콜 88 μM, 염화나트륨 1 mM, 비스(3-설포프로필)디설파이드 0.01 내지 1 mM 및 평탄제로 벤조트리아졸 0.01 내지 5 mM을 포함하는 구리 전해 도금 용액으로 전기 전착을 하고, 상기와 동일한 구성의 구리 전해 도금 용액으로 후기 전착을 하는 것을 특징으로 하는 구리 전해 도금 방법.
- 제 4항에 있어서,상기 구리 전해 도금 방법(B)는 전기 전착 단계(ⅰ)의 비스(3-설포프로필)디설파이드와 벤조트리아졸의 농도비가 1:1 내지 1:20이며, 후기 전착 단계(ⅲ)의 비스(3-설포프로필)디설파이드와 벤조트리아졸의 농도비가 1:1 내지 1:200인 것을 특징으로 하는 구리 전해 도금 방법.
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KR1020050118660A KR100880521B1 (ko) | 2005-12-07 | 2005-12-07 | 평탄화제를 이용한 금속 전해 도금 방법 |
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KR1020050118660A KR100880521B1 (ko) | 2005-12-07 | 2005-12-07 | 평탄화제를 이용한 금속 전해 도금 방법 |
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KR20070059617A KR20070059617A (ko) | 2007-06-12 |
KR100880521B1 true KR100880521B1 (ko) | 2009-01-28 |
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KR20030094098A (ko) * | 2002-06-03 | 2003-12-11 | 쉬플리 캄파니, 엘.엘.씨. | 평탄화제 화합물 |
KR20070006612A (ko) * | 2005-07-08 | 2007-01-11 | 롬 앤드 하스 일렉트로닉 머트어리얼즈, 엘.엘.씨. | 도금 방법 |
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KR20030094098A (ko) * | 2002-06-03 | 2003-12-11 | 쉬플리 캄파니, 엘.엘.씨. | 평탄화제 화합물 |
KR20070006612A (ko) * | 2005-07-08 | 2007-01-11 | 롬 앤드 하스 일렉트로닉 머트어리얼즈, 엘.엘.씨. | 도금 방법 |
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