JP2005146292A - 微細回路配線の形成方法並びにこれに用いるめっき液およびめっき装置 - Google Patents
微細回路配線の形成方法並びにこれに用いるめっき液およびめっき装置 Download PDFInfo
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- JP2005146292A JP2005146292A JP2003380831A JP2003380831A JP2005146292A JP 2005146292 A JP2005146292 A JP 2005146292A JP 2003380831 A JP2003380831 A JP 2003380831A JP 2003380831 A JP2003380831 A JP 2003380831A JP 2005146292 A JP2005146292 A JP 2005146292A
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- Prior art keywords
- plating
- copper
- phosphorus
- phosphorus element
- fine circuit
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- 238000007747 plating Methods 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 title claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 75
- 229910052802 copper Inorganic materials 0.000 claims abstract description 74
- 239000010949 copper Substances 0.000 claims abstract description 74
- 239000011574 phosphorus Substances 0.000 claims abstract description 54
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 54
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000000758 substrate Substances 0.000 claims abstract description 31
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 22
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 11
- -1 chlorine ions Chemical class 0.000 claims abstract description 10
- 230000004888 barrier function Effects 0.000 claims abstract description 9
- 238000009713 electroplating Methods 0.000 claims abstract description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 14
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 9
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 4
- RAOSIAYCXKBGFE-UHFFFAOYSA-K [Cu+3].[O-]P([O-])([O-])=O Chemical compound [Cu+3].[O-]P([O-])([O-])=O RAOSIAYCXKBGFE-UHFFFAOYSA-K 0.000 claims description 2
- 229910001392 phosphorus oxide Inorganic materials 0.000 claims description 2
- VSAISIQCTGDGPU-UHFFFAOYSA-N tetraphosphorus hexaoxide Chemical compound O1P(O2)OP3OP1OP2O3 VSAISIQCTGDGPU-UHFFFAOYSA-N 0.000 claims 1
- 150000003018 phosphorus compounds Chemical class 0.000 abstract description 4
- 239000000460 chlorine Substances 0.000 abstract description 3
- 229910052801 chlorine Inorganic materials 0.000 abstract description 2
- 238000013508 migration Methods 0.000 abstract description 2
- 230000005012 migration Effects 0.000 abstract description 2
- 229910000366 copper(II) sulfate Inorganic materials 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 45
- 239000010410 layer Substances 0.000 description 29
- 239000004065 semiconductor Substances 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 5
- 229910001431 copper ion Inorganic materials 0.000 description 5
- 230000008021 deposition Effects 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 239000012086 standard solution Substances 0.000 description 4
- 239000003637 basic solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- JZCCFEFSEZPSOG-UHFFFAOYSA-L copper(II) sulfate pentahydrate Chemical compound O.O.O.O.O.[Cu+2].[O-]S([O-])(=O)=O JZCCFEFSEZPSOG-UHFFFAOYSA-L 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000006259 organic additive Substances 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- 229940085991 phosphate ion Drugs 0.000 description 2
- 150000003017 phosphorus Chemical class 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910017888 Cu—P Inorganic materials 0.000 description 1
- RIRXDDRGHVUXNJ-UHFFFAOYSA-N [Cu].[P] Chemical compound [Cu].[P] RIRXDDRGHVUXNJ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hcl hcl Chemical compound Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- LUXYLEKXHLMESQ-UHFFFAOYSA-N iridium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ir+3].[Ir+3] LUXYLEKXHLMESQ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- LFGREXWGYUGZLY-UHFFFAOYSA-N phosphoryl Chemical class [P]=O LFGREXWGYUGZLY-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- PXQLVRUNWNTZOS-UHFFFAOYSA-N sulfanyl Chemical class [SH] PXQLVRUNWNTZOS-UHFFFAOYSA-N 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
- Electrodes Of Semiconductors (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
【解決手段】 微細な回路パターンが設けられ、バリア層および必要によりシード層が形成された電子回路用基板上に、銅−りん合金めっきによるめっき層で回路を形成することを特徴とする微細回路配線の形成方法およびこの方法に使用する、硫酸銅、硫酸および塩素イオンを含有する硫酸銅めっき液に、りん化合物をりん元素として1×10−6ないし50重量%含有することを特徴とするりん元素ドープ銅めっき液。
【選択図】 図1
Description
硫 酸 10から100g/L
塩素イオン 30から90mg/L
りん化合物 100から10000mg/L
(りん酸イオンとして)
ポリマー成分 10から40mL/L
キャリア成分 1から20mL/L
レベラー成分 1から20mL/L
下記組成の硫酸銅めっき液(基本液)1Lに対し50%りん酸を5ml添加し、りん元
素ドープ銅めっき液を調製した。このめっき液を用い、温度25℃、電流密度30mA/cm2、めっき時間1分間の条件で、150nm幅で、アスペクト比が5のビアが形成された半導体基板上にりん元素ドープ銅めっきを行った。なお、前記半導体基板は、常法によりバリア層およびシード層を形成した。
硫酸銅・五水塩 200g/L
硫 酸 50g/L
塩素イオン 50mg/L
りん化合物 100mg/L
(りん酸イオンとして)
ポリマー成分 30mL/L
キャリア成分 10mL/L
レベラー成分 10mL/L
2 … … 導電層
3 … … 層間絶縁層
4 … … バリア層
5 … … シード層または触媒層
6 … … りん元素ドープ銅めっき層
10 … … めっき処理槽
11 … … 陽極電極板
12 … … 被めっき基板
13 … … めっき液調整槽
14 … … 標準液槽
15 … … 補給液槽
16 … … 補給液槽
17 … … 補給液槽
18 … … 硫酸槽
19 … … 塩酸槽
20 … … フィルタ
21 … … サンプリング手段
22 … … 自動分析手段
23 … … 廃液タンク
24 … … レベルセンサ
25 … … 制御手段
26 … … りん酸層
P1〜P8 … … ポンプ
V1〜V7 … … バルブ
E … … めっき電源
以 上
Claims (9)
- 微細な回路パターンが設けられ、バリア層および必要によりシード層が形成された電子回路用基板上に、りん元素ドープ銅めっきによるめっき層で回路を形成することを特徴とする微細回路配線の形成方法。
- 前記めっき層中のりん元素含有率が1×10−6ないし10atom%である請求項1記載の微細回路配線の形成方法。
- 前記めっき層の体積抵抗率が5μΩ・cm以下である請求項1記載の微細回路配線の形成方法。
- 前記めっき層が電気めっき液により形成されるものである請求項1記載の微細回路配線の形成方法。
- 硫酸銅、硫酸および塩素イオンを含有する硫酸銅めっき液に、りん化合物をりん元素として1×10−6ないし50重量%含有することを特徴とするりん元素ドープ銅めっき液。
- 前記りん化合物がりん酸、酸化りんまたはりん酸銅である請求項第5項記載のりん元素ドープ銅めっき液。
- 陽極電極板と被めっき基板が対向して配置されためっき処理漕中にりん元素ドープ銅めっき液が収容され、該陽極電極板と被めっき基板の間にめっき電源からめっき電流を供給することにより、電解めっきにて被めっき基板の表面にめっき処理を行うめっき装置であって、少なくともめっき液を構成する成分を供給する手段として、りん化合物含有液を供給する手段を具備することを特徴とするめっき装置。
- 少なくともりん元素成分濃度を管理する装置を具備することを特徴とする請求項第7項記載のめっき装置。
- 前記陽極電極板は、不溶解性電極板である請求項第7項記載のめっき装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003380831A JP4226994B2 (ja) | 2003-11-11 | 2003-11-11 | 微細回路配線の形成方法並びにこれに用いるめっき液およびめっき装置 |
US10/980,320 US20050126919A1 (en) | 2003-11-07 | 2004-11-04 | Plating method, plating apparatus and a method of forming fine circuit wiring |
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JP2003380831A JP4226994B2 (ja) | 2003-11-11 | 2003-11-11 | 微細回路配線の形成方法並びにこれに用いるめっき液およびめっき装置 |
Publications (2)
Publication Number | Publication Date |
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JP2005146292A true JP2005146292A (ja) | 2005-06-09 |
JP4226994B2 JP4226994B2 (ja) | 2009-02-18 |
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JP2003380831A Expired - Fee Related JP4226994B2 (ja) | 2003-11-07 | 2003-11-11 | 微細回路配線の形成方法並びにこれに用いるめっき液およびめっき装置 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007051362A (ja) * | 2005-07-19 | 2007-03-01 | Ebara Corp | めっき装置及びめっき液の管理方法 |
JP2007088477A (ja) * | 2005-09-22 | 2007-04-05 | Samsung Electro-Mechanics Co Ltd | キャビティを備えた基板の製造方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20210000514A (ko) * | 2019-06-25 | 2021-01-05 | 삼성전기주식회사 | 인쇄회로기판 도금 방법 및 인쇄회로기판 |
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2003
- 2003-11-11 JP JP2003380831A patent/JP4226994B2/ja not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007051362A (ja) * | 2005-07-19 | 2007-03-01 | Ebara Corp | めっき装置及びめっき液の管理方法 |
JP2007088477A (ja) * | 2005-09-22 | 2007-04-05 | Samsung Electro-Mechanics Co Ltd | キャビティを備えた基板の製造方法 |
JP4648277B2 (ja) * | 2005-09-22 | 2011-03-09 | サムソン エレクトロ−メカニックス カンパニーリミテッド. | キャビティを備えた基板の製造方法 |
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JP4226994B2 (ja) | 2009-02-18 |
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