KR100792358B1 - 반도체 소자의 금속배선 및 그 형성방법 - Google Patents
반도체 소자의 금속배선 및 그 형성방법 Download PDFInfo
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- KR100792358B1 KR100792358B1 KR1020060096346A KR20060096346A KR100792358B1 KR 100792358 B1 KR100792358 B1 KR 100792358B1 KR 1020060096346 A KR1020060096346 A KR 1020060096346A KR 20060096346 A KR20060096346 A KR 20060096346A KR 100792358 B1 KR100792358 B1 KR 100792358B1
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 184
- 239000002184 metal Substances 0.000 title claims abstract description 184
- 239000004065 semiconductor Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims description 117
- 230000004888 barrier function Effects 0.000 claims abstract description 59
- 230000007797 corrosion Effects 0.000 claims abstract description 54
- 238000005260 corrosion Methods 0.000 claims abstract description 54
- 239000000956 alloy Substances 0.000 claims abstract description 23
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims description 39
- 238000005498 polishing Methods 0.000 claims description 16
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 15
- 229910016570 AlCu Inorganic materials 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 14
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 11
- 239000003112 inhibitor Substances 0.000 claims description 11
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 10
- 229910008482 TiSiN Inorganic materials 0.000 claims description 10
- QRXWMOHMRWLFEY-UHFFFAOYSA-N isoniazide Chemical compound NNC(=O)C1=CC=NC=C1 QRXWMOHMRWLFEY-UHFFFAOYSA-N 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 238000005536 corrosion prevention Methods 0.000 claims description 9
- 238000000151 deposition Methods 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 8
- 150000004702 methyl esters Chemical class 0.000 claims description 7
- 230000001590 oxidative effect Effects 0.000 claims description 6
- 239000007800 oxidant agent Substances 0.000 claims description 5
- 238000007517 polishing process Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 4
- 239000008119 colloidal silica Substances 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims 2
- 238000009413 insulation Methods 0.000 abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 68
- 229910052782 aluminium Inorganic materials 0.000 description 66
- 239000010949 copper Substances 0.000 description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 22
- 229910052802 copper Inorganic materials 0.000 description 22
- 239000010410 layer Substances 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000007788 liquid Substances 0.000 description 11
- 238000005229 chemical vapour deposition Methods 0.000 description 8
- 238000005530 etching Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- 238000005240 physical vapour deposition Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000006227 byproduct Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000001020 plasma etching Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 3
- 230000027756 respiratory electron transport chain Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000010349 cathodic reaction Methods 0.000 description 2
- 239000013522 chelant Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 1
- NOVHEGOWZNFVGT-UHFFFAOYSA-N hydrazine Chemical compound NN.NN NOVHEGOWZNFVGT-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
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- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
- H01L23/53209—Conductive materials based on metals, e.g. alloys, metal silicides
- H01L23/53214—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being aluminium
- H01L23/53223—Additional layers associated with aluminium layers, e.g. adhesion, barrier, cladding layers
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- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
- H01L21/02068—Cleaning during device manufacture during, before or after processing of conductive layers, e.g. polysilicon or amorphous silicon layers
- H01L21/02074—Cleaning during device manufacture during, before or after processing of conductive layers, e.g. polysilicon or amorphous silicon layers the processing being a planarization of conductive layers
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- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
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- H01L21/76853—Barrier, adhesion or liner layers characterized by particular after-treatment steps
- H01L21/76855—After-treatment introducing at least one additional element into the layer
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Abstract
Description
Claims (25)
- 트렌치가 형성된 절연막;상기 트렌치를 포함한 상기 절연막 상부면 단차를 따라 형성된 장벽금속막;상기 트렌치가 매립되도록 상기 장벽금속막 상에 형성된 금속막; 및상기 금속막과 상기 장벽금속막 간의 계면에 형성된 갈바닉 부식 방지막을 포함하여 이루어진 반도체 소자의 금속배선.
- 제 1 항에 있어서,상기 갈바닉 부식 방지막은 상기 금속막 물질을 함유한 합금막으로 이루어지는 반도체 소자의 금속배선.
- 제 1 항에 있어서,상기 금속막은 Al로 이루어진 반도체 소자의 금속배선.
- 제 1 항에 있어서,상기 갈바닉 부식 방지막은 AlCu 합금막으로 이루어진 반도체 소자의 금속배선.
- 제 1 항에 있어서,상기 장벽금속막은 Ti/TiN, Ti/TiN/Ti, Ta/TaN, Ta/TaN/Ta, Ti/TiSiN 및 Ti/TiSiN/Ti 중 어느 하나의 적층막으로 이루어진 반도체 소자의 금속배선.
- 복수의 트렌치를 구비한 절연막이 형성된 기판을 제공하는 단계;상기 트렌치를 포함한 상기 절연막 상부면 단차를 따라 장벽금속막을 형성하는 단계;상기 장벽금속막 상부면 단차를 따라 제1 금속막을 형성하는 단계;상기 트렌치가 매립되도록 상기 제1 금속막 상에 제2 금속막을 형성하는 단계; 및열공정을 통해 상기 장벽금속막과 상기 제2 금속막 간의 계면에 갈바닉 부식 방지막을 형성하는 단계를 포함하는 반도체 소자의 금속배선 형성방법.
- 제 6 항에 있어서,상기 갈바닉 부식 방지막은 상기 제1 및 제2 금속막 물질이 서로 결합된 합 금막으로 형성하는 반도체 소자의 금속배선 형성방법.
- 제 6 항에 있어서,상기 제1 및 제2 금속막은 서로 반대의 극성을 갖는 금속으로 형성하는 반도체 소자의 금속배선 형성방법.
- 제 6 항에 있어서,상기 제1 금속막은 Cu로 형성하고, 상기 제2 금속막은 Al로 형성하는 반도체 소자의 금속배선 형성방법.
- 제 6 항에 있어서,상기 장벽금속막은 Ti/TiN, Ti/TiN/Ti, Ta/TaN, Ta/TaN/Ta, Ti/TiSiN 및 Ti/TiSiN/Ti 중 어느 하나의 적층막으로 형성하는 반도체 소자의 금속배선 형성방법.
- 제 6 항 내지 제 10 항 중 어느 하나의 항에 있어서,상기 갈바닉 부식 방지막을 형성한 후,상기 제2 금속막을 화학적기계적연마하여 이웃하는 상기 제2 금속막을 서로 분리시키는 단계; 및세정공정을 실시하는 단계를 더 포함하는 반도체 소자의 금속배선 형성방법.
- 제 11 항에 있어서,상기 화학적기계적연마 공정은 상기 제2 금속막을 산화시킨 후 pH가 4~6인 연마 슬러리를 이용하여 상기 절연막 상부의 제2 금속막을 제거하는 방식으로 이루어지는 반도체 소자의 금속배선 형성방법.
- 제 12 항에 있어서,상기 화학적기계적연마 공정시에는 산화제를 2~6% 첨가하여 상기 제2 금속막을 산화시키고 상기 연마 슬러리로는 콜로이드성의 실리카 또는 알루미늄산화막계의 연마입자를 사용하는 반도체 소자의 금속배선 형성방법.
- 제 11 항에 있어서,상기 세정공정은 세정액이 염기성이 되도록 순수 세정액에 금속부식방지제, 아민 계열의 히드라진 및 불산 중 어느 하나를 첨가하여 이루어지는 반도체 소자의 금속배선 형성방법.
- 제 14 항에 있어서,상기 금속부식방지제로는 메틸 에스테르를 사용하는 반도체 소자의 금속배선 형성방법.
- 복수의 트렌치를 구비한 절연막이 형성된 기판을 제공하는 단계;상기 트렌치를 포함한 상기 절연막 상부면 단차를 따라 장벽금속막을 형성하는 단계; 및상기 트렌치가 매립되도록 장벽금속막 상에 제1 금속으로 이루어진 금속막을 증착하는 동시에 제2 금속 가스를 주입하여 상기 장벽금속막과 상기 금속막 간의 계면에 갈바닉 부식 방지막을 형성하는 단계를 포함하는 반도체 소자의 금속배선 형성방법.
- 제 16 항에 있어서,상기 갈바닉 부식 방지막은 상기 제1 및 제2 금속이 결합된 합금막으로 형성하는 반도체 소자의 금속배선 형성방법.
- 제 16 항에 있어서,상기 제1 및 제2 금속은 서로 반대의 극성을 갖는 반도체 소자의 금속배선 형성방법.
- 제 16 항에 있어서,상기 금속막은 Al로 형성하고 상기 제2 금속 가스는 Cu 가스인 반도체 소자의 금속배선 형성방법.
- 제 16 항에 있어서,상기 장벽금속막은 Ti/TiN, Ti/TiN/Ti, Ta/TaN, Ta/TaN/Ta, Ti/TiSiN 및 Ti/TiSiN/Ti 중 어느 하나의 적층막으로 형성하는 반도체 소자의 금속배선 형성방법.
- 제 16 항 내지 제 20 항 중 어느 하나의 항에 있어서,상기 갈바닉 부식 방지막을 형성한 후,상기 금속막을 화학적기계적연마하여 이웃하는 상기 금속막을 서로 분리시키는 단계; 및세정공정을 실시하는 단계를 더 포함하는 반도체 소자의 금속배선 형성방법.
- 제 21 항에 있어서,상기 화학적기계적연마 공정은 상기 금속막을 산화시킨 후 pH가 4~6인 연마 슬러리를 이용하여 상기 절연막 상부의 금속막을 제거하는 방식으로 실시하는 반도체 소자의 금속배선 형성방법.
- 제 22 항에 있어서,상기 화학적기계적연마 공정은 산화제를 2~6% 첨가하여 상기 금속막을 산화시키고 상기 연마 슬러리로는 콜로이드성의 실리카 또는 알루미늄산화막계의 연마입자를 사용하는 반도체 소자의 금속배선 형성방법.
- 제 21 항에 있어서,상기 세정공정은 세정액이 염기성이 되도록 순수 세정액에 금속부식방지제, 아민 계열의 히드라진 및 불산 중 어느 하나를 첨가하여 이루어지는 반도체 소자의 금속배선 형성방법.
- 제 24 항에 있어서,상기 금속부식방지제로는 메틸 에스테르를 사용하는 반도체 소자의 금속배선 형성방법.
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US11/770,681 US7648904B2 (en) | 2006-09-29 | 2007-06-28 | Metal line in semiconductor device and method for forming the same |
DE102007030812A DE102007030812B4 (de) | 2006-09-29 | 2007-07-03 | Metallische Leitung in Halbleitervorrichtung und Verfahren zum Bilden derselben |
TW096124753A TWI349977B (en) | 2006-09-29 | 2007-07-06 | Metal line in semiconductor device and method for forming the same |
JP2007201685A JP2008091875A (ja) | 2006-09-29 | 2007-08-02 | 半導体素子の金属配線及びその形成方法 |
CN2007101460182A CN101154646B (zh) | 2006-09-29 | 2007-09-05 | 半导体器件内的金属线及其形成方法 |
US12/688,738 US8120113B2 (en) | 2006-09-29 | 2010-01-15 | Metal line in semiconductor device |
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CN101654774B (zh) * | 2008-08-19 | 2011-09-07 | 中芯国际集成电路制造(上海)有限公司 | 抑制金属焊盘腐蚀的方法 |
JP5369544B2 (ja) * | 2008-08-29 | 2013-12-18 | 富士通株式会社 | 半導体装置およびその製造方法 |
CN102443787A (zh) * | 2011-10-12 | 2012-05-09 | 上海华力微电子有限公司 | 一种选择性生长镍的方法 |
TW201403782A (zh) * | 2012-07-04 | 2014-01-16 | Ind Tech Res Inst | 基底穿孔的製造方法、矽穿孔結構及其電容控制方法 |
CN111863712B (zh) * | 2019-04-24 | 2024-07-16 | 台湾积体电路制造股份有限公司 | 半导体结构和形成半导体结构的方法 |
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DE102007030812B4 (de) | 2009-08-20 |
CN101154646A (zh) | 2008-04-02 |
CN101154646B (zh) | 2012-03-21 |
US20080079156A1 (en) | 2008-04-03 |
US7648904B2 (en) | 2010-01-19 |
JP2008091875A (ja) | 2008-04-17 |
TWI349977B (en) | 2011-10-01 |
US8120113B2 (en) | 2012-02-21 |
DE102007030812A1 (de) | 2008-04-10 |
TW200816378A (en) | 2008-04-01 |
US20100117235A1 (en) | 2010-05-13 |
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