JP4741965B2 - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- JP4741965B2 JP4741965B2 JP2006081084A JP2006081084A JP4741965B2 JP 4741965 B2 JP4741965 B2 JP 4741965B2 JP 2006081084 A JP2006081084 A JP 2006081084A JP 2006081084 A JP2006081084 A JP 2006081084A JP 4741965 B2 JP4741965 B2 JP 4741965B2
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- 239000004065 semiconductor Substances 0.000 title claims description 28
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 239000010949 copper Substances 0.000 claims description 127
- 229910052802 copper Inorganic materials 0.000 claims description 122
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 120
- 230000004888 barrier function Effects 0.000 claims description 103
- 229910045601 alloy Inorganic materials 0.000 claims description 91
- 239000000956 alloy Substances 0.000 claims description 91
- 239000011229 interlayer Substances 0.000 claims description 46
- 229910052751 metal Inorganic materials 0.000 claims description 41
- 239000002184 metal Substances 0.000 claims description 41
- 239000010410 layer Substances 0.000 claims description 17
- 229910052735 hafnium Inorganic materials 0.000 claims description 11
- 229910052715 tantalum Inorganic materials 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 7
- 238000005229 chemical vapour deposition Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 description 55
- 230000001070 adhesive effect Effects 0.000 description 55
- 238000000034 method Methods 0.000 description 21
- 239000000463 material Substances 0.000 description 16
- 230000009977 dual effect Effects 0.000 description 15
- 238000005530 etching Methods 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 229910004298 SiO 2 Inorganic materials 0.000 description 9
- 239000010936 titanium Substances 0.000 description 8
- 229910052719 titanium Inorganic materials 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 7
- 229910052758 niobium Inorganic materials 0.000 description 7
- 229910052726 zirconium Inorganic materials 0.000 description 7
- 229910000881 Cu alloy Inorganic materials 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000000231 atomic layer deposition Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 229910017566 Cu-Mn Inorganic materials 0.000 description 3
- 229910017871 Cu—Mn Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- -1 Al and Ag Chemical compound 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910017028 MnSi Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- JUZTWRXHHZRLED-UHFFFAOYSA-N [Si].[Cu].[Cu].[Cu].[Cu].[Cu] Chemical compound [Si].[Cu].[Cu].[Cu].[Cu].[Cu] JUZTWRXHHZRLED-UHFFFAOYSA-N 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910021360 copper silicide Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004808 supercritical fluid chromatography Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
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- H—ELECTRICITY
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- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- 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
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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
- H01L21/76801—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
- H01L21/76829—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 characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
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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
- H01L21/76801—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
- H01L21/76829—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 characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
- H01L21/76831—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 characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers in via holes or trenches, e.g. non-conductive sidewall 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
- H01L21/76838—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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- 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
- H01L21/76855—After-treatment introducing at least one additional element into the layer
- H01L21/76859—After-treatment introducing at least one additional element into the layer by ion implantation
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- 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
- H01L21/76871—Layers specifically deposited to enhance or enable the nucleation of further layers, i.e. seed layers
- H01L21/76873—Layers specifically deposited to enhance or enable the nucleation of further layers, i.e. seed layers for electroplating
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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
- H01L23/53228—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being copper
- H01L23/53238—Additional layers associated with copper layers, e.g. adhesion, barrier, cladding layers
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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
- H01L23/5329—Insulating materials
- H01L23/53295—Stacked insulating layers
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- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- H01L2924/30—Technical effects
- H01L2924/301—Electrical effects
- H01L2924/3011—Impedance
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- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Formation Of Insulating Films (AREA)
Description
基板上に形成された下層導電膜と、
前記下層導電膜上に形成され、前記下層導電膜に達する凹部が形成された層間絶縁膜と、
前記層間絶縁膜の前記凹部側壁を覆うように形成されたSiNまたはSiCNのバリア絶縁膜と、
前記凹部の底面で前記下層導電膜に接するとともに前記凹部の側壁で前記バリア絶縁膜に接して前記凹部内壁を覆うように形成された、銅と、Hf、Ta、およびNbから選択される少なくとも一の金属との合金膜と、
銅を主成分として含み、前記合金膜上に当該合金膜に接して前記凹部を埋め込んで形成された上層導電膜と、を含む半導体装置が提供される。
基板上に形成された下層導電膜上に層間絶縁膜を形成する工程と、
前記層間絶縁膜に、前記下層導電膜に達する凹部を形成する工程と、
前記凹部内壁を覆うように、SiNまたはSiCNのバリア絶縁膜を形成する工程と、
前記凹部底面の前記下層導電膜と接する領域の前記バリア絶縁膜を除去して前記下層導電膜を露出させる工程と、
前記凹部内壁を覆うように、銅と、Hf、Ta、およびNbから選択される少なくとも一の金属との合金膜を形成する工程と、
前記凹部内に、銅を主成分として含む上層導電膜を前記合金膜に接して形成し、前記凹部を埋め込む工程と、を含む半導体装置の製造方法が提供される。
半導体装置100は、トランジスタ等の素子が表面に形成された半導体基板(不図示)、半導体基板上に形成された第1の層間絶縁膜102、第1のエッチング阻止膜104、第2の層間絶縁膜106、第1のキャップ絶縁膜108、第3の層間絶縁膜110、第2のエッチング阻止膜112、および第4の層間絶縁膜114を含む。
ここでは、下層配線126が形成された状態からの手順を説明する。下層配線126を形成後、下層配線126上に、第1のキャップ絶縁膜108、第3の層間絶縁膜110、第2のエッチング阻止膜112、および第4の層間絶縁膜114をこの順で積層する。
102 第1の層間絶縁膜
104 第1のエッチング阻止膜
106 第2の層間絶縁膜
108 第1のキャップ絶縁膜
110 第3の層間絶縁膜
112 第2のエッチング阻止膜
114 第4の層間絶縁膜
120 第1のバリア絶縁膜
122 第1の接着合金膜
124 第1の銅含有導電膜
126 下層配線
128 第2のバリア絶縁膜
130 第2の接着合金膜
132 第2の銅含有導電膜
134 上層配線
140 デュアルダマシン配線溝
Claims (4)
- 基板上に形成された下層導電膜と、
前記下層導電膜上に形成され、前記下層導電膜に達する凹部が形成された層間絶縁膜と、
前記層間絶縁膜の前記凹部側壁を覆うように形成されたSiNまたはSiCNのバリア絶縁膜と、
前記凹部の底面で前記下層導電膜に接するとともに前記凹部の側壁で前記バリア絶縁膜に接して前記凹部内壁を覆うように形成された、銅と、Hf、Ta、およびNbから選択される少なくとも一の金属との合金膜と、
銅を主成分として含み、前記合金膜上に当該合金膜に接して前記凹部を埋め込んで形成された上層導電膜と、を含む半導体装置。 - 請求項1に記載の半導体装置において、
前記合金膜は、前記上層導電膜と接する界面から前記バリア絶縁膜と接する界面にわたって、前記合金膜の組成が略均一に構成された半導体装置。 - 基板上に形成された下層導電膜上に層間絶縁膜を形成する工程と、
前記層間絶縁膜に、前記下層導電膜に達する凹部を形成する工程と、
前記凹部内壁を覆うように、SiNまたはSiCNのバリア絶縁膜を形成する工程と、
前記凹部底面の前記下層導電膜と接する領域の前記バリア絶縁膜を除去して前記下層導電膜を露出させる工程と、
前記凹部内壁を覆うように、銅と、Hf、Ta、およびNbから選択される少なくとも一の金属との合金膜を形成する工程と、
前記凹部内に、銅を主成分として含む上層導電膜を前記合金膜に接して形成し、前記凹部を埋め込む工程と、を含む半導体装置の製造方法。 - 請求項3に記載の半導体装置の製造方法において、
前記バリア絶縁膜を形成する工程において、化学気相成長法により、前記バリア絶縁膜を形成する半導体装置の製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2006081084A JP4741965B2 (ja) | 2006-03-23 | 2006-03-23 | 半導体装置およびその製造方法 |
US11/723,498 US7755191B2 (en) | 2006-03-23 | 2007-03-20 | Semiconductor device and method of manufacturing the same |
CN200710089394.2A CN101043028A (zh) | 2006-03-23 | 2007-03-23 | 半导体器件及其制造方法 |
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JP2006081084A JP4741965B2 (ja) | 2006-03-23 | 2006-03-23 | 半導体装置およびその製造方法 |
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JP2007258457A JP2007258457A (ja) | 2007-10-04 |
JP4741965B2 true JP4741965B2 (ja) | 2011-08-10 |
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JP2006081084A Expired - Fee Related JP4741965B2 (ja) | 2006-03-23 | 2006-03-23 | 半導体装置およびその製造方法 |
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US (1) | US7755191B2 (ja) |
JP (1) | JP4741965B2 (ja) |
CN (1) | CN101043028A (ja) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6764940B1 (en) | 2001-03-13 | 2004-07-20 | Novellus Systems, Inc. | Method for depositing a diffusion barrier for copper interconnect applications |
US8298933B2 (en) * | 2003-04-11 | 2012-10-30 | Novellus Systems, Inc. | Conformal films on semiconductor substrates |
US7842605B1 (en) | 2003-04-11 | 2010-11-30 | Novellus Systems, Inc. | Atomic layer profiling of diffusion barrier and metal seed layers |
US7510634B1 (en) | 2006-11-10 | 2009-03-31 | Novellus Systems, Inc. | Apparatus and methods for deposition and/or etch selectivity |
US7772110B2 (en) * | 2007-09-28 | 2010-08-10 | Tokyo Electron Limited | Electrical contacts for integrated circuits and methods of forming using gas cluster ion beam processing |
KR101649714B1 (ko) * | 2008-03-21 | 2016-08-30 | 프레지던트 앤드 펠로우즈 오브 하바드 칼리지 | 상호접속부를 위한 자기정렬 배리어 층 |
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JP2005347511A (ja) * | 2004-06-03 | 2005-12-15 | Matsushita Electric Ind Co Ltd | 半導体装置及びその製造方法 |
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