KR100472856B1 - 반도체 소자의 금속 배선 형성 방법 - Google Patents
반도체 소자의 금속 배선 형성 방법 Download PDFInfo
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- KR100472856B1 KR100472856B1 KR10-2002-0085427A KR20020085427A KR100472856B1 KR 100472856 B1 KR100472856 B1 KR 100472856B1 KR 20020085427 A KR20020085427 A KR 20020085427A KR 100472856 B1 KR100472856 B1 KR 100472856B1
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- Prior art keywords
- metal wiring
- semiconductor device
- metal layer
- electroless plating
- barrier metal
- Prior art date
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 86
- 239000002184 metal Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000004065 semiconductor Substances 0.000 title claims abstract description 18
- 239000010410 layer Substances 0.000 claims abstract description 63
- 230000004888 barrier function Effects 0.000 claims abstract description 36
- 238000007772 electroless plating Methods 0.000 claims abstract description 34
- 238000007747 plating Methods 0.000 claims abstract description 26
- 239000011229 interlayer Substances 0.000 claims abstract description 22
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 230000003064 anti-oxidating effect Effects 0.000 claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 6
- 238000011065 in-situ storage Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 5
- 239000010949 copper Substances 0.000 claims description 10
- 238000005240 physical vapour deposition Methods 0.000 claims description 9
- 229910052723 transition metal Inorganic materials 0.000 claims description 8
- 150000003624 transition metals Chemical class 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000005229 chemical vapour deposition Methods 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 4
- 238000007517 polishing process Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 5
- 230000009977 dual effect Effects 0.000 abstract description 2
- 230000004913 activation Effects 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- 238000009713 electroplating Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- -1 copper cations Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- 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
- H01L21/76877—Filling of holes, grooves or trenches, e.g. vias, with conductive material
-
- 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
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/2855—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by physical means, e.g. sputtering, evaporation
-
- 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
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28556—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by chemical means, e.g. CVD, LPCVD, PECVD, laser CVD
-
- 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
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/288—Deposition of conductive or insulating materials for electrodes conducting electric current from a liquid, e.g. electrolytic deposition
-
- 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
- H01L21/76807—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 for dual damascene structures
-
- 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
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- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
Claims (13)
- 층간 절연막에 콘택홀이 형성되어 하부 구조의 소정 영역이 노출되는 반도체 기판이 제공되는 단계;전체 상부 표면에 장벽 금속층을 형성하는 단계;상기 콘택홀 저면의 상기 하부 구조 상에 형성된 상기 장벽 금속층을 선택적으로 제거하여 상기 하부 구조의 상부 표면을 노출시키는 단계;상기 노출된 하부 구조를 포함한 전체 상부 표면에 산화 방지막을 형성하는 단계; 및상기 기판을 무전해 도금액에 침전시켜, 상기 산화 방지막이 제거되면서 노출되는 상기 하부 구조의 표면으로부터 도금층을 성장시키는 단계를 포함하는 것을 특징으로 하는 반도체 소자의 금속 배선 형성 방법.
- 제 1 항에 있어서,상기 장벽 금속층은 화학기상 증착법이나 물리기상 증착법으로 Ta, TaN, TaC, WN, TiW, WBN 또는 WC을 증착하여 형성하는 것을 특징으로 하는 반도체 소자의 금속 배선 형성 방법.
- 제 1 항에 있어서,상기 장벽 금속층은 PVD 모듈에서 리스퍼터링 방법으로 제거하는 것을 특징으로 하는 반도체 소자의 금속 배선 형성 방법.
- 제 3 항에 있어서,상기 리스퍼터링 방법은 13.56MHz rf 제네레이터를 이용하여 50 내지 1000W의 rf 파워를 인가하고, 플라즈마 형성을 위한 DC 파워를 1 내지 30kW 인가한 상태에서 전이 금속을 이용하여 실시하는 것을 특징으로 하는 반도체 소자의 금속 배선 형성 방법.
- 제 4 항에 있어서,상기 전이 금속으로 Ta, Ti 또는 W의 전이 금속을 사용하는 것을 특징으로 하는 반도체 소자의 금속 배선 형성 방법.
- 제 1 항에 있어서,상기 산화 방지막은 상기 무전해 도금액의 pH를 고려하여 상기 무전해 도금액에 쉽게 부식될 수 있는 물질로 형성하는 것을 특징으로 하는 반도체 소자의 금속 배선 형성 방법.
- 제 1 항에 있어서,상기 산화 방지막은 알루미늄으로 형성하는 것을 특징으로 하는 반도체 소자의 금속 배선 형성 방법.
- 제 1 항 또는 제 7 항에 있어서,상기 산화 방지막은 상기 장벽 금속층을 제거한 챔버에서 인-시투로 형성되는 것을 특징으로 하는 반도체 소자의 금속 배선 형성 방법.
- 제 1 항 또는 제 7 항에 있어서,상기 산화 방지막은 20 내지 2000Å의 두께로 형성하는 것을 특징으로 하는 반도체 소자의 금속 배선 형성 방법.
- 제 1 항에 있어서,상기 무전해 도금액은 구리를 도금하는 경우 Cu2+가 10-4 내지 101 의 M(mol/L)이고 pH는 10 내지 13인 것을 특징으로 하는 반도체 소자의 금속 배선 형성 방법.
- 제 10 항에 있어서,상기 무전해 도금액의 온도는 20 내지 100℃로 유지하는 것을 특징으로 하는 반도체 소자의 금속 배선 형성 방법.
- 제 1 항에 있어서, 상기 도금층을 형성한 후,상기 층간 절연막의 상부 표면이 노출되도록 화학적 기계적 연마 공정을 실시하여 상기 층간 절연막 상부의 상기 장벽 금속층과, 상기 층간 절연막의 표면 상부로 돌출된 상기 도금층을 제거하는 단계; 및소정의 세정 공정을 실시하고 열처리를 실시하는 단계를 더 포함하는 것을 특징으로 하는 반도체 소자의 금속 배선 형성 방법.
- 제 12 항에 있어서,상기 열처리 공정은 150 내지 450℃의 온도에서 실시하는 것을 특징으로 하는 반도체 소자의 금속 배선 형성 방법.
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KR10-2002-0085427A KR100472856B1 (ko) | 2002-12-27 | 2002-12-27 | 반도체 소자의 금속 배선 형성 방법 |
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KR10-2002-0085427A KR100472856B1 (ko) | 2002-12-27 | 2002-12-27 | 반도체 소자의 금속 배선 형성 방법 |
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KR20040058909A KR20040058909A (ko) | 2004-07-05 |
KR100472856B1 true KR100472856B1 (ko) | 2005-03-10 |
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KR101127025B1 (ko) * | 2004-12-07 | 2012-03-26 | 매그나칩 반도체 유한회사 | 반도체 소자의 구리 배선 형성방법 |
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