KR20050086476A - 반도체 인터커넥트 구조 상의 금속층 증착 방법 - Google Patents
반도체 인터커넥트 구조 상의 금속층 증착 방법 Download PDFInfo
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- KR20050086476A KR20050086476A KR1020057008286A KR20057008286A KR20050086476A KR 20050086476 A KR20050086476 A KR 20050086476A KR 1020057008286 A KR1020057008286 A KR 1020057008286A KR 20057008286 A KR20057008286 A KR 20057008286A KR 20050086476 A KR20050086476 A KR 20050086476A
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- Prior art keywords
- layer
- depositing
- sputter etching
- metal conductor
- liner layer
- Prior art date
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 71
- 239000002184 metal Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000000151 deposition Methods 0.000 title claims abstract description 31
- 239000004065 semiconductor Substances 0.000 title claims abstract description 19
- 239000004020 conductor Substances 0.000 claims abstract description 29
- 238000000992 sputter etching Methods 0.000 claims abstract description 24
- 229910052786 argon Inorganic materials 0.000 claims abstract description 13
- 239000010949 copper Substances 0.000 claims description 33
- 229910052802 copper Inorganic materials 0.000 claims description 31
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 29
- 229910052721 tungsten Inorganic materials 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000000059 patterning Methods 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- 239000005368 silicate glass Substances 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- 229910004166 TaN Inorganic materials 0.000 claims 4
- 239000011521 glass Substances 0.000 claims 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 20
- 230000008569 process Effects 0.000 abstract description 13
- 235000012431 wafers Nutrition 0.000 description 20
- 230000008021 deposition Effects 0.000 description 10
- 230000004888 barrier function Effects 0.000 description 9
- 230000027756 respiratory electron transport chain Effects 0.000 description 9
- 239000007789 gas Substances 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 239000003989 dielectric material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- JUZTWRXHHZRLED-UHFFFAOYSA-N [Si].[Cu].[Cu].[Cu].[Cu].[Cu] Chemical compound [Si].[Cu].[Cu].[Cu].[Cu].[Cu] JUZTWRXHHZRLED-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 229910021360 copper silicide Inorganic materials 0.000 description 2
- 238000005137 deposition process Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 208000029523 Interstitial Lung disease Diseases 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 poly (arylene ether Chemical compound 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76841—Barrier, adhesion or liner layers
- H01L21/76843—Barrier, adhesion or liner layers formed in openings in a dielectric
- H01L21/76844—Bottomless liners
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76805—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics the opening being a via or contact hole penetrating the underlying conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76841—Barrier, adhesion or liner layers
- H01L21/76853—Barrier, adhesion or liner layers characterized by particular after-treatment steps
- H01L21/76865—Selective removal of parts of the layer
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
Claims (20)
- 반도체 웨이퍼에 대한 인터커넥트 구조 상에 금속층을 증착하는 방법에 있어서,유전체층으로 피복된 금속 도전체를 포함하는 인터커넥트 구조를 제공하는 단계;상기 금속 도전체가 노출되는 개구를 형성하기 위해 상기 유전체층을 패터닝하는 단계;상기 개구의 벽 및 바닥 상에 라이너층(liner layer)을 증착하는 단계;상기 금속 도전체를 노출시키기 위해 상기 라이너층을 스퍼터 에칭하고, 상기 개구의 측벽 상에 상기 라이너층을 최소한 부분적으로 재증착하는 단계; 및상기 개구의 벽 상에 최소한 하나의 추가층을 증착하고, 상기 재증착된 라이너층을 피복하는 단계를 포함하는 방법.
- 제1항에 있어서,상기 라이너층은 TaN, Ta, Ti, Ti(Si)N 및 W을 포함하는 그룹으로부터 선택되고, 상기 추가층은 TaN, Ta, Ti, Ti(Si)N, W 및 Cu을 포함하는 그룹으로부터 선택되는 방법.
- 제1항에 있어서,상기 개구를 구리로 충진하는 단계를 더 포함하는 방법.
- 제1항에 있어서,상기 개구는 비아(via) 또는 트렌치(trench)인 방법.
- 제1항에 있어서,상기 금속 도전체는 구리, 텅스텐 및 알루미늄을 포함하는 그룹으로부터 선택되는 방법.
- 제1항에 있어서,상기 스퍼터 에칭용 가스는 Ar, He, Ne, Xe, N2, H2, NH3, N2H2 또는 이들의 혼합물을 포함하는 그룹으로부터 선택되는 방법.
- 제1항에 있어서,상기 스퍼터 에칭하는 단계에서 상기 스퍼터 에칭은 상기 금속 도전체 탑(top) 표면 상에서 멈추는 방법.
- 제1항에 있어서,상기 스퍼터 에칭하는 단계에서 상기 스퍼터 에칭은 최소한 부분적으로 상기 금속 도전체를 스퍼터 에칭한 후에 멈추는 방법.
- 제1항에 있어서,상기 라이너층을 증착하는 단계 및 최소한 하나의 추가층을 증착하는 단계 사이에서 상기 웨이퍼가 에어브레이크(airbreak)에 노출되는 방법.
- 반도체 웨이퍼에 대한 인터커넥트 구조 상에 금속층 증착하는 방법에 있어서,캐핑층(capping layer) 및 유전체층으로 피복된 금속 도전체를 포함하는 인터커넥트 구조를 제공하는 단계;상기 금속 도전체가 노출되는 개구를 형성하기 위해 상기 유전체층 및 캐핑층을 패터닝하는 단계;상기 개구의 벽 및 바닥 상에 라이너층을 증착하는 단계;상기 금속 도전체를 노출시키기 위해 상기 라이너층을 스퍼터 에칭하고, 상기 개구의 측벽에 상기 라이너층을 최소한 부분적으로 재증착하는 단계; 및상기 개구의 벽에 최소한 하나의 추가층을 증착하고, 상기 재증착된 라이너층을 피복하는 단계를 포함하는 방법.
- 제10항에 있어서,상기 캐핑층은 실리콘 나이트라이드(silicon nitride), 실리콘 카바이드(silicon carbide), 실리콘 옥시카바이드(silicon oxycarbide), 수소처리된 실리콘 카바이드(hydrogenated silicon carbide), 실리콘 다이옥사이드(silicon dioxide), 유기 실리케이트 유리(organosilicate glass) 및 다른 low-k 재료를 포함하는 그룹으로부터 선택되는 방법.
- 제10항에 있어서,상기 캐핑층은 상기 유전체층보다 두께가 더 얇은 방법.
- 제10항에 있어서,상기 라이너층은 TaN, Ta, Ti, Ti(Si)N 및 W을 포함하는 그룹으로부터 선택되고, 상기 추가층은 TaN, Ta, Ti, Ti(Si)N, W 및 Cu을 포함하는 그룹으로부터 선택되는 방법.
- 제10항에 있어서,상기 개구를 구리로 충진하는 단계를 더 포함하는 방법.
- 제10항에 있어서,상기 개구는 비아 또는 트렌치인 방법.
- 제10항에 있어서,상기 금속 도전체는 구리, 텅스텐 및 알루미늄을 포함하는 그룹으로부터 선택되는 방법.
- 제10항에 있어서,스퍼터 에칭용 가스는 Ar, He, Ne, Xe, N2, H2, NH3, N2H2 또는 이들의 혼합물을 포함하는 그룹으로부터 선택되는 방법.
- 제10항에 있어서,상기 스퍼터 에칭하는 단계에서 상기 스퍼터 에칭은 상기 금속 도전체 탑 표면 상에서 멈추는 방법.
- 제10항에 있어서,상기 스퍼터 에칭하는 단계에서 상기 스퍼터 에칭은 최소한 부분적으로 상기 금속 도전체를 스퍼터 에칭한 후에 멈추는 방법.
- 제10항에 있어서,상기 라이너층을 증착하는 단계 및 최소 하나의 추가층을 증착하는 단계 사이에 상기 웨이퍼가 에어브레이크(airbreak)에 노출되는 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/318,605 | 2002-12-11 | ||
US10/318,605 US6949461B2 (en) | 2002-12-11 | 2002-12-11 | Method for depositing a metal layer on a semiconductor interconnect structure |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20050086476A true KR20050086476A (ko) | 2005-08-30 |
KR100702549B1 KR100702549B1 (ko) | 2007-04-04 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020057008286A KR100702549B1 (ko) | 2002-12-11 | 2003-12-08 | 반도체 인터커넥트 구조 상의 금속층 증착 방법 |
Country Status (8)
Country | Link |
---|---|
US (1) | US6949461B2 (ko) |
EP (1) | EP1570518A2 (ko) |
JP (1) | JP4767541B2 (ko) |
KR (1) | KR100702549B1 (ko) |
CN (1) | CN100461369C (ko) |
AU (1) | AU2003300263A1 (ko) |
TW (1) | TWI236099B (ko) |
WO (1) | WO2004053926A2 (ko) |
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JP4832807B2 (ja) * | 2004-06-10 | 2011-12-07 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
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US20070126120A1 (en) * | 2005-12-06 | 2007-06-07 | Taiwan Semiconductor Manufacturing Co., Ltd. | Semiconductor device |
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WO2004053926A3 (en) | 2004-11-25 |
WO2004053926A2 (en) | 2004-06-24 |
US6949461B2 (en) | 2005-09-27 |
TW200421542A (en) | 2004-10-16 |
AU2003300263A1 (en) | 2004-06-30 |
EP1570518A2 (en) | 2005-09-07 |
CN100461369C (zh) | 2009-02-11 |
JP2006518927A (ja) | 2006-08-17 |
CN1947236A (zh) | 2007-04-11 |
TWI236099B (en) | 2005-07-11 |
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