WO2005101472A1 - 半導体集積回路装置の製造方法 - Google Patents
半導体集積回路装置の製造方法 Download PDFInfo
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- WO2005101472A1 WO2005101472A1 PCT/JP2005/000463 JP2005000463W WO2005101472A1 WO 2005101472 A1 WO2005101472 A1 WO 2005101472A1 JP 2005000463 W JP2005000463 W JP 2005000463W WO 2005101472 A1 WO2005101472 A1 WO 2005101472A1
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- Prior art keywords
- wafer
- film
- integrated circuit
- semiconductor integrated
- circuit device
- Prior art date
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- 239000004065 semiconductor Substances 0.000 title claims description 148
- 238000004519 manufacturing process Methods 0.000 title claims description 112
- 238000000034 method Methods 0.000 title claims description 110
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 169
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 162
- 239000010941 cobalt Substances 0.000 claims abstract description 162
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 75
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 74
- 238000004544 sputter deposition Methods 0.000 claims description 74
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 41
- 229910052710 silicon Inorganic materials 0.000 claims description 41
- 239000010703 silicon Substances 0.000 claims description 41
- 238000010438 heat treatment Methods 0.000 claims description 35
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 30
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 24
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 19
- 229910052782 aluminium Inorganic materials 0.000 claims description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 17
- 238000005192 partition Methods 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 15
- 238000002955 isolation Methods 0.000 claims description 14
- 229920005591 polysilicon Polymers 0.000 claims description 12
- 229910052759 nickel Inorganic materials 0.000 claims description 11
- AIOWANYIHSOXQY-UHFFFAOYSA-N cobalt silicon Chemical compound [Si].[Co] AIOWANYIHSOXQY-UHFFFAOYSA-N 0.000 claims description 10
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 22
- 230000002093 peripheral effect Effects 0.000 abstract description 16
- 230000007423 decrease Effects 0.000 abstract description 7
- 229910052581 Si3N4 Inorganic materials 0.000 abstract description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 abstract description 5
- 239000010408 film Substances 0.000 description 276
- 235000012431 wafers Nutrition 0.000 description 136
- 239000010410 layer Substances 0.000 description 61
- 239000000758 substrate Substances 0.000 description 52
- 238000009826 distribution Methods 0.000 description 37
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 22
- 239000010936 titanium Substances 0.000 description 19
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 18
- 238000000151 deposition Methods 0.000 description 18
- 229910052719 titanium Inorganic materials 0.000 description 18
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 16
- 239000007789 gas Substances 0.000 description 14
- 230000008021 deposition Effects 0.000 description 11
- 238000000137 annealing Methods 0.000 description 10
- 229910052786 argon Inorganic materials 0.000 description 9
- 239000012535 impurity Substances 0.000 description 9
- 239000010935 stainless steel Substances 0.000 description 9
- 229910001220 stainless steel Inorganic materials 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 239000012298 atmosphere Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- -1 silicide compound Chemical class 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 5
- 238000011068 loading method Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- NVIVJPRCKQTWLY-UHFFFAOYSA-N cobalt nickel Chemical compound [Co][Ni][Co] NVIVJPRCKQTWLY-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 238000005422 blasting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 238000001755 magnetron sputter deposition Methods 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- DJNHLZWTYLEQCN-UHFFFAOYSA-N [Si].[Co].[Co] Chemical compound [Si].[Co].[Co] DJNHLZWTYLEQCN-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 description 2
- 229910021334 nickel silicide Inorganic materials 0.000 description 2
- PEUPIGGLJVUNEU-UHFFFAOYSA-N nickel silicon Chemical compound [Si].[Ni] PEUPIGGLJVUNEU-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- IEQUNHXCJVILJQ-UHFFFAOYSA-N aluminum palladium Chemical compound [Al].[Pd] IEQUNHXCJVILJQ-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- IVHJCRXBQPGLOV-UHFFFAOYSA-N azanylidynetungsten Chemical compound [W]#N IVHJCRXBQPGLOV-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000010419 fine particle 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
- 238000005468 ion implantation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910021424 microcrystalline silicon Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/665—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using self aligned silicidation, i.e. salicide
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/34—Gas-filled discharge tubes operating with cathodic sputtering
- H01J37/3411—Constructional aspects of the reactor
- H01J37/3447—Collimators, shutters, apertures
-
- 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
- H01L21/28518—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 the conductive layers comprising silicides
-
- 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
- H01L21/70—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
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/8238—Complementary field-effect transistors, e.g. CMOS
- H01L21/823828—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes
- H01L21/823835—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes silicided or salicided gate conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7833—Field effect transistors with field effect produced by an insulated gate with lightly doped drain or source extension, e.g. LDD MOSFET's; DDD MOSFET's
Definitions
- the present invention relates to a technology for manufacturing a semiconductor integrated circuit device, and particularly to a technology effective when applied to a salicide (SALICIDE: Self Aligned Silicide) process using a metal film formed by a sputtering method. It is.
- SALICIDE Self Aligned Silicide
- Cobalt is used to cool silicon substrates at temperatures lower than the temperature at which cobalt (CoSi) is formed.
- a cobalt-silicon (Co Si) film or cobalt silicide (Co Si) is formed at the interface between cobalt and silicon.
- Patent Document 1 Japanese Patent Application Laid-Open No. 9-69497
- Patent Document 2 US Pat. No. 5,780,361
- the temperature of the substrate including the silicon region is adjusted to any temperature up to a force of 200 ° C up to 400 ° C, and the upper surface of the silicon region is subjected to collimate sputtering or Long Throw.
- a metal film is formed by a sputtering method, a protective film is continuously formed on the upper surface of the metal film, and then a heat treatment is performed on the metal film, the protective film, and the silicon region to form a silicide film on the silicon region.
- a forming technique is described in Japanese Patent Application Laid-Open No. 2003-158091 (Patent Document 3). This corresponds to US Patent Application Publication No. 2003Z096491 (Patent Document 4).
- Patent Document 5 Japanese Patent Application Laid-Open No. H10-121234 (Patent Document 5) describes a technique for eliminating the asymmetry of film formation by increasing the force as it approaches a peripheral portion.
- Patent Document 6 a technique of changing the aperture of a collimator in the radial direction in order to secure flatness of a film is disclosed in Japanese Patent Application Laid-Open No. H11-200029.
- Patent Document 7 discloses a technique for using a snuttering device having a collimator for forming cobalt silicide and the like.
- Patent document 1 JP-A-9-69497
- Patent Document 2 US Pat. No. 5,780,361
- Patent Document 3 JP 2003-158091A
- Patent Document 4 U.S. Patent Application Publication No. 2003Z096491
- Patent Document 5 JP-A-10-121234
- Patent Document 6 JP-A-11-200029
- Patent Document 7 JP 08-031769 A
- the refractory metal film is formed on a semiconductor wafer (hereinafter simply referred to as a wafer) by, for example, a collimated sputtering method.
- a plate called a collimator with a large number of control holes is installed between the target and the wafer, and only the components perpendicular to the wafer of sputter particles that have sputtered from the target in various directions are taken out. This is a technology for forming a film, which can reduce damage to the wafer due to electron charging.
- a high-melting point metal film for example, a cobalt (Co) film is formed by a collimated sputtering method
- the thickness distribution of the cobalt film on the wafer surface is affected by the collimator. Becomes thicker at the periphery of wafer
- the thickness of the cobalt silicide film formed by the silicide reaction largely depends on the thickness of the cobalt film before the silicide reaction. Therefore, the uneven thickness distribution of the cobalt film appears as an uneven thickness distribution of the cobalt silicide film, and the thickness distribution of the cobalt silicide film in the wafer surface becomes thicker at the center of the wafer. In the periphery of Become thin. However, the distance between the cobalt silicide film and the interface of the pn junction becomes short at the center of the wafer where the cobalt silicide film is formed thickly, causing an increase in the leakage current at the pn junction.
- An object of the present invention is to provide a technique capable of improving the uniformity of film thickness distribution in a wafer surface of a film formed by a sputtering method.
- One of the inventions of the present application is that a collimator provided with a large number of control holes is provided between a substrate and a target, and the target is sputtered to form a second collimator on a main surface of the substrate at a relatively high temperature.
- the method includes the step of depositing one film, and changes the aspect ratio of a large number of control holes in one collimator according to the film thickness distribution of the first film.
- a method of manufacturing a semiconductor integrated circuit device including the following steps:
- a collimator provided with a number of control holes is provided between a substrate and a target, and the target is sputtered to form a first film on a main surface of the substrate at a relatively high temperature. The process of being deposited,
- collimator comprises:
- the aspect ratio of the plurality of control holes is changed according to the thickness distribution of the first film.
- the aspect ratio force of the plurality of control holes is continuously reduced toward a peripheral portion of a central portion of the collimator.
- the aspect ratio force of the plurality of control holes is continuously increased toward a peripheral portion of a central portion of the collimator.
- the aspect ratio of the plurality of control holes is set to be the smallest!
- the value divided by the ratio is the peripheral range centered at 0.8.
- the number of the control holes is the smallest, and the aspect ratio is the largest of the number of the control holes.
- the value divided by the aspect ratio is between 0.7 and 0.9.
- the temperature of the substrate is 300 ° C. or higher.
- the temperature of the substrate is 350 ° C. or more.
- the temperature of the substrate is 400 ° C. or higher.
- a material of the collimator is aluminum, an aluminum alloy, stainless steel, or titanium, or the surface of the collimator is made of aluminum. Or stainless steel or titanium coated with an aluminum alloy.
- the sputtering is a highly directional sputtering method.
- the method for manufacturing a semiconductor integrated circuit device according to any one of the above items 1 to 15, further includes the following steps:
- step (b) after the step (a), performing a first heat treatment on the main surface of the substrate at a first temperature to cause a reaction between the substrate and the first film;
- step (d) After the step (c), a step of performing a second heat treatment on the main surface of the substrate at a second temperature higher than the first temperature.
- the method for manufacturing a semiconductor integrated circuit device according to item 16 further includes the following steps.
- step (e) performing a third heat treatment on the main surface of the substrate at a third temperature lower than the first temperature before the step (b).
- the first film is a cobalt film.
- the thickness of the first film deposited on the substrate is in a range of 7 nm to 10 nm. .
- the thickness of the first film deposited on the substrate is in a range of 5 nm to 15 nm. . 21. In the method for manufacturing a semiconductor integrated circuit device according to any one of the above items 1 to 18, the thickness of the first film deposited on the substrate is in a range of 3 nm to 20 nm. .
- the first film is a nickel film or a nickel-cobalt alloy film.
- step (f) a step of depositing a second film having an oxidation preventing function on the first film before the step (b).
- the second film is a titanium nitride film, a tungsten nitride film, or a tantalum nitride film.
- step (g) a step of sequentially depositing a second film and a third film having an oxidation preventing function on the first film before the step (b).
- the second film is a titanium nitride film
- the third film is a titanium film
- a method of manufacturing a semiconductor integrated circuit device including the following steps:
- step (f) After the step (e), a step of converting the second silicide film into a third silicide film containing cobalt disilicide (CoSi) as a main component by a second heat treatment.
- CoSi cobalt disilicide
- the first temperature range is not less than 300 degrees Celsius and less than 450 degrees Celsius.
- the first temperature range is 350 degrees Celsius or more and less than 450 degrees Celsius.
- the first temperature range is 400 degrees Celsius or more and less than 450 degrees Celsius.
- the first temperature range is not less than 300 degrees Celsius and less than 400 degrees Celsius.
- the collimator can be used upside down every time the amount of adhesion is near the limit of strain. Can be.
- the aperture ratio of the collimator decreases due to an increase in the amount of adhesion after alternate use of force, the collimator itself needs to be cleaned or regenerated.
- a process such as blasting the conoreto attached to the surface of stainless steel together with the underlying aluminum by blasting or the like is effective as a regeneration process in terms of dust generation and prevention of consumption of the base material.
- the base material is titanium, dust generation can be relatively reduced even without aluminum coating. Titanium also has the advantage of being more resistant to deformation than stainless steel. Further, aluminum or the like may be coated on the titanium base material).
- the aspect ratio change rate of the collimator is less than 98% and 50% or more.
- an aperture ratio of a portion of the collimator facing the wafer is 85% or more.
- the base material of the collimator includes stainless steel as a main component.
- the aspect ratio change rate of the collimator is less than 95% and 65% or more.
- the aspect ratio change rate of the collimator is less than 90% and 70% or more.
- the aspect ratio change rate of the collimator is less than 85% and 75% or more.
- the thickness of the partition wall of the collimator is less than 3 mm and not less than 0.3 mm (strength with respect to deformation of the collimator. High is effective for securing the aperture ratio).
- the thickness of the partition wall of the collimator is less than 2 mm and 0.5 mm or more.
- the thickness of the partition wall of the collimator is less than 1.5 mm and 0.7 mm or more.
- the size of the plurality of openings is (the size of the opening is a distance between opposing partition walls. Dimensionally the distance between sides), less than 20mm, more than 5mm (in order to secure the cobalt deposition rate of lOnmZ or more which is generally required for mass production, and microscopic deposition uniformity It is necessary to ensure that this does not preclude lower deposition rates).
- the size of the plurality of openings is less than 15 mm and 7 mm or more.
- a method of manufacturing a semiconductor integrated circuit device including the following steps:
- step (d) After the step (c), performing a first heat treatment while controlling the temperature of the first main surface of the wafer within a second temperature range of 400 ° C. or more and less than 600 ° C. Process;
- a second heat treatment is performed in a state where the temperature of the first main surface of the wafer is controlled within a third temperature range of not less than 600 degrees Celsius and less than 850 degrees Celsius. Process.
- the first temperature range is 350 degrees Celsius or more and less than 450 degrees Celsius.
- the first temperature range is not less than 400 degrees Celsius and less than 450 degrees Celsius.
- the first temperature range is 300 ° C. or more and less than 400 ° C.
- the collimator is substantially rotationally symmetric, and is vertically arranged with respect to a plane of symmetry perpendicular to the axis to be rotated. It is almost plane symmetric.
- the plurality of openings are regular hexagons having substantially the same opening area, and are substantially hexagonal. They are arranged to form a close-packed lattice.
- the aspect ratio change rate of the collimator is less than 98% and 50% or more.
- the partition walls of the plurality of openings of the collimator are formed in a straight line connecting the center of the wafer and the center of the cobalt target. , Are substantially parallel.
- an aperture ratio of a portion of the collimator opposed to the wafer is 85% or more.
- the base material has a base material other than aluminum as a main component
- the surface of the collimator has aluminum-palladium. It has a coating layer as a main component.
- the base material of the collimator is mainly made of stainless steel.
- the aspect ratio change rate of the collimator is less than 95% and 65% or more.
- the aspect ratio change rate of the collimator is less than 90% and 70% or more.
- the aspect ratio change rate of the collimator is less than 85% or more than 75%.
- the thickness of the partition wall of the collimator is less than 3 mm and 0.3 mm or more.
- the thickness of the partition wall of the collimator is less than 2 mm and 0.5 mm or more.
- the thickness of the partition wall of the collimator is less than 1.5 mm and 0.7 mm or more.
- the size of the plurality of openings is (the size of the openings is a distance between opposing partition walls. The dimension is the distance between sides), less than 20 mm, and more than 5 mm. 40. In the method for manufacturing a semiconductor integrated circuit device according to any one of Items 22 to 38, the size of the plurality of openings is less than 15 mm and 7 mm or more.
- the contour of the principal surface of the collimator is a second-order or higher-order curved surface.
- a method of manufacturing a semiconductor integrated circuit device including the following steps:
- a mechanical collimator having a large number of openings with non-uniform aspect ratios the base material of which has a coating layer whose main component is other than aluminum and whose main component is aluminum.
- collimated sputtering in which an object is interposed between the wafer and a target mainly composed of cobalt or nickel, cobalt or nickel is deposited on the element isolation region on the first main surface of the wafer and on the silicon surface of the source and drain regions.
- a low-resistance silicide layer having a small leakage current at a pn junction can be formed.
- FIG. 1 is a fragmentary cross-sectional view of a semiconductor substrate, illustrating an example of a method for manufacturing a semiconductor integrated circuit device according to an embodiment of the present invention.
- FIG. 2 is an essential part cross sectional view of a semiconductor substrate, showing an example of a method of manufacturing a semiconductor integrated circuit device according to an embodiment of the present invention.
- FIG. 3 is a fragmentary cross-sectional view of a semiconductor substrate, illustrating an example of a method for manufacturing a semiconductor integrated circuit device according to an embodiment of the present invention.
- FIG. 4 is a schematic sectional view of a sputtering apparatus used for forming a cobalt film according to an embodiment of the present invention.
- FIG. 5 shows a collimator used in a sputtering apparatus according to an embodiment of the present invention, wherein (a) is a schematic plan view, and (b) is a schematic view taken along line aa ′ of FIG. It is sectional drawing.
- FIG. 6 is a view illustrating a case where a cobalt film according to an embodiment of the present invention is formed by a sputtering method.
- FIG. 4 is a process sequence diagram showing an example of a change over time of a wafer temperature, an argon gas flow rate, and a DC power.
- FIG. 7 is a cross-sectional view of a principal part of a semiconductor substrate, illustrating an example of a method of manufacturing a semiconductor integrated circuit device according to an embodiment of the present invention.
- FIG. 8 is a graph showing the relationship between the sheet resistance defect rate of a polycrystalline silicon film having a cobalt silicide layer formed thereon and the surface temperature of a wafer when depositing a cobalt film.
- FIG. 9 is a cross-sectional view of a principal part of a semiconductor substrate, illustrating an example of a method for manufacturing a semiconductor integrated circuit device according to an embodiment of the present invention.
- FIG. 10 (a) shows an in-wafer film thickness distribution table showing the in-wafer film thickness distribution of a cobalt film formed on a dummy wafer, and (b) shows a measurement position on the wafer It is a schematic plan view.
- FIG. 11 (a) is an in-wafer film thickness distribution table showing the in-wafer film thickness distribution of a cobalt silicide layer formed by a silicide reaction, and (b) is a measurement position on the wafer.
- FIG. 12 is a cross-sectional view of a principal part of a semiconductor substrate, illustrating an example of a method for manufacturing a semiconductor integrated circuit device according to an embodiment of the present invention.
- FIG. 13 is a fragmentary cross-sectional view of a semiconductor substrate, illustrating another example of a method of manufacturing a semiconductor integrated circuit device according to an embodiment of the present invention.
- FIG. 14 is a cross-sectional view of a principal part of a semiconductor substrate, illustrating an example of a method of manufacturing a semiconductor integrated circuit device according to an embodiment of the present invention.
- FIG. 15 is a cross-sectional view of a principal part of a semiconductor substrate, illustrating an example of a method for manufacturing a semiconductor integrated circuit device according to an embodiment of the present invention.
- FIG. 16 is a cross-sectional view of a principal part of a semiconductor substrate, illustrating an example of a method of manufacturing a semiconductor integrated circuit device according to an embodiment of the present invention.
- FIG. 17 is a cross-sectional view of a principal part of a semiconductor substrate, illustrating an example of a method of manufacturing a semiconductor integrated circuit device according to an embodiment of the present invention.
- FIGS. 18 (a) and (b) are cross-sectional views of a collimator according to an embodiment of the present invention, and (c) is a cross-sectional view of a collimator studied by the present inventors.
- the present invention can be applied to a wafer having a diameter of about 300 mm, a wafer having a diameter of about 300 mm, and a wafer having a diameter larger or smaller than that described for a wafer having a diameter (diameter) of about 200 mm for convenience.
- the number of elements when referring to the number of elements (including the number, numerical value, amount, range, etc.), the number is particularly limited, and the number is limited to a specific number in principle. Except in the case where the number is limited, the number is not limited to the specific number but may be a specific number or more.
- constituent elements are not necessarily required unless otherwise specified and in cases where it is deemed essential in principle. It's not essential, it's not necessary!
- the axial direction perpendicular to and substantially the same as the axial direction of the main surface of c (for example, when the device surface of the wafer is turned downward, laterally, or obliquely during sputtering, gravity It goes without saying that it is no longer in the opposite direction.)
- semiconductor integrated circuit device refers to only a device formed on a silicon single crystal wafer, and a device formed on a SOI (Silicon On Insulator) substrate unless otherwise specified. As well as those made on other substrates such as TFT (Thin Film Transistor) liquid crystal. Similarly, when referring to a wafer, unless otherwise specified, an SOI substrate that can be formed only of a silicon single crystal wafer, or a substantially disk-shaped or rectangular integrated circuit substrate for producing a TFT liquid crystal or the like. Shall be included.
- silicon for a silicon substrate surface portion
- a so-called polysilicon electrode, or the like silicon is used as necessary unless otherwise specified or otherwise clearly specified.
- amorphous surface silicon and microcrystalline silicon that are not limited to typical polycrystalline silicon are also included. Shall be included. This is because, in general, polysilicon may be amorphous at the beginning of its formation, and this is a force that usually changes to polysilicon in a narrow sense by a subsequent heat treatment. This is because it is difficult to identify.
- CMOS Complementary Metal Oxide Semiconductor
- the gate insulating film is not limited to the oxide film.
- a material in which a silicon nitride film, which is a non-oxidized film-based inorganic insulating film, is used as a gate insulating film is included. This is the same for “metal” and “semiconductor”.
- the present invention is not limited to this, and may be selected on the source and drain regions. It also includes an elevated source drain method for forming an epitaxial silicon layer or the like. On the other hand, there is an advantage that the process can be greatly simplified by forming it directly substantially as in the embodiment. Note that the term “direct” does not exclude a treatment layer, an intervening layer, and the like having a small thickness.
- MIS FET Metal Insulator Semiconductor Field Effect Transistor
- pMIS p-channel MIS'FET
- nMIS nMIS.
- This embodiment is applied to a CMOS type integrated circuit (including a non-oxidized silicon-based high-k gate insulating film), and the manufacturing method thereof is shown in FIGS. It will be described in order of use.
- a semiconductor substrate (hereinafter, referred to as a substrate or wafer) 1 made of a p-type single crystal silicon having a specific resistance of about 110 ⁇ cm, for example.
- the element isolation groove 2 is formed by etching the substrate 1 in the element isolation region, and then an oxide silicon film 3 is deposited on the substrate 1 including the inside of the element isolation groove 2 by a CVD (Chemical Vapor Deposition) method. Subsequently, unnecessary silicon oxide film 3 outside element isolation trench 2 is polished and removed by CMP (Chemical Mechanical Polishing).
- CVD Chemical Vapor Deposition
- boron (B) is ion-implanted into a part of the substrate 1 and phosphorus (P) is ion-implanted into the other part, thereby forming a p-type well 4 and an n-type well 5.
- the substrate 1 is subjected to steam oxidation to form a gate oxide film 6 on each surface of the P-type well 4 and the n-type well 5.
- a gate electrode 7 is formed on each of the p-type cell 4 and the n-type cell 5 (a so-called dual-gate CMOS or CMIS (a so-called dual-gate CMOS or CMIS (a so-called dual-gate CMOS or CMIS (a so-called dual-gate CMOS or CMIS (a so-called dual-gate CMOS or CMIS (a so-called dual-gate CMOS or CMIS (a so-called dual-gate CMOS or CMIS (
- Gate electrode 7 In order to form it, for example, a polycrystalline silicon film is formed on the gate oxide film 6 by a CVD method (in practice, it is often in an amorphous state at the time of deposition, but is polycrystallized by any subsequent heat treatment. For the sake of convenience, unless otherwise specified, these are also referred to as “polycrystalline silicon”), and then phosphorus is ion-implanted into the polycrystalline silicon film on the p-type well 4, and n After boron ions are implanted into the polycrystalline silicon film on the upper part of the mold well 5, the polycrystalline silicon film is patterned by dry etching using a resist pattern as a mask.
- an n-type semiconductor region 8 having a low impurity concentration is formed by ion-implanting phosphorus or arsenic (As) into the p-type well 4, and boron is ion-implanted into the n-type well 5.
- a P- type semiconductor region 9 having a low impurity concentration is formed.
- the silicon nitride film deposited on the substrate 1 by the CVD method is anisotropically etched to form sidewalls 10 on the sidewalls of the gate electrode 7 and Expose the surface of l (n-type semiconductor region 8, p-type semiconductor region 9).
- an n + type semiconductor region (source, drain) 11 having a high impurity concentration is formed by ion-implanting phosphorus or arsenic into the p-type well 4, and boron is ion-implanted into the n-type well 5.
- a P + type semiconductor region (source, drain) 12 having a high impurity concentration is formed.
- junction depth of the pn junction of the n + semiconductor region 11 (the interface where the n + semiconductor region 11 and the p-type well 4 are in contact) (the surface force of the substrate 1 in the thickness direction of the substrate 1 up to the above pn junction) Depth) and the junction depth of the pn junction (the interface between the p + semiconductor region 12 and the n-type well 5) of the p + semiconductor region 12 are in the range of 50 nm to 300 nm.
- the gate electrode 7 and the surfaces of the source and the drain are formed by the following method.
- a cobalt silicide layer is formed. This is a so-called salicide method, in which silicidation on the gate electrode and on the source and drain is performed in a self-aligned manner by utilizing the separating action of the side wall of the gate electrode.
- This method has an advantage that silicide can be simultaneously performed on the gate electrode and low resistance can be obtained.
- a polymetal gate electrode or In the case of (silicon electrode) the gate electrode is covered with an insulating film before depositing the cobalt film because it is not subjected to silicidation since the metal is further reduced in resistance on the gate electrode. Need to be kept.
- FIG. 4 is a schematic sectional view of a DC magnetron sputtering apparatus used for forming a cobalt film.
- the sputtering apparatus 100 includes a vacuum vessel 102 that forms a sputtering chamber 101, and the sputtering chamber 101 is evacuated by a vacuum pump such as a cryopump or a dry pump.
- a loading / unloading port 103 for loading / unloading the wafer 1 is provided in the sputtering chamber 101, and the loading / unloading port 103 is configured to be opened and closed by a gate valve 104.
- a gas supply pipe 106 for supplying an inert (and large) mass for generating ions and supplying an argon (Ar) gas 105 as a discharge gas is inserted into the sputtering chamber 101.
- a backing plate 107 is provided at the upper opening of the vacuum vessel 102 so as to seal the sputtering chamber 101, and a target 108 is exchangeably mounted in contact with the knocking plate 107.
- the target 108 is formed by sputtering with argon ions to eject the composition and form a nottering film on the wafer 1 which is a substrate to be processed.
- the cobalt purity of the target 108, excluding nonmetallic impurities, is 99.99% by weight or more, and more preferably 99.999% by weight or more.
- the cobalt target is described in International Patent Publication WO98Z42009 pamphlet of Nishihara et al. This corresponds to US Pat. No. 6,693,001 (issued February 17, 2004).
- a lift 109 is installed at the bottom of the vacuum vessel 102 in a vertically upward direction, and an electrostatic chuck 110 having a heating mechanism is supported on the lift 109 so as to move up and down.
- the electrostatic chuck 110 is configured to hold the wafer 1 on the upper surface and to heat the wafer 1.
- a power supply for applying a DC voltage or a high-frequency voltage is electrically connected between the electrostatic chuck 110 and the backing plate 107.
- a lower shield 111 Under the electrostatic chuck 110, a lower shield 111 is provided, and a sputtering chamber is provided.
- An upper shield 112 is disposed above the 101 so as to surround a region directly below the target 108, and is held at an upper end opening of the vacuum vessel 102.
- the lower shield 111 and the upper shield 112 are made of stainless steel or aluminum or the like, and are configured to surround the target 108 to prevent fine particles sputtered from the target 108 from adhering to the inner wall of the sputtering chamber 101. Have been.
- a disk-shaped magnet plate 113 for holding plasma is arranged horizontally concentrically with the sputtering chamber 101, and the magnet plate 113 is arranged on the center line of the sputtering chamber 101.
- the rotation shaft 114 is configured to rotate.
- a collimator 115 is erected so as to traverse the target 108 and the wafer 1 horizontally at predetermined height positions with respect to the target 108 and the wafer 1, respectively.
- FIG. 5 (a) is a schematic plan view of the collimator
- FIG. 5 (b) is a schematic cross-sectional view taken along line a of FIG. 5 (a).
- the collimator 115 includes a main body 116 formed in a disk shape larger than the wafer 1, and the main body 116 has a large number of hexagonal control holes 117 penetrating in the thickness direction.
- the products are arranged so as to be substantially uniform over the entire surface, and all the control holes 117 are provided at predetermined intervals and substantially in parallel with each other. Many control holes 117 are formed by cutting or the like.
- a high melting point metal film or a metal alloy such as aluminum, an aluminum alloy, stainless steel, or titanium can be used as a material of the collimator 115.
- the base material is made of a high melting point metal or metal alloy such as stainless steel or titanium, and the surface is blasted (blasting the blast material to the base material with compressed air or continuously projecting with a rotor blade, After a surface treatment technology to remove surface dirt), the coating is sprayed using aluminum or an aluminum alloy (metal, ceramic, etc. melted by a heat source such as combustion gas, arc, plasma, etc. is sprayed onto the product to form a coating). You can also use the collimator 115, which has a coating technology.
- the main body 116 of the collimator 115 also has a central portion whose force is gradually thinned toward the peripheral portion.
- the upper surface and the lower surface of the main body 116 have outwardly convex shaped surfaces vertically symmetrically. I have.
- the aspect ratio of a large number of control holes 117 (hole depth dZ The diameter w) of the collimator 115 also decreases continuously at the central portion of the collimator 115 toward the peripheral portion.
- the aspect ratio of the outermost control hole 117 of the main body 116 is 1, the appropriate aspect ratio of the control hole 117 located at the center of the main body 116 is considered to be, for example, 1.05 to 1.5.
- the range suitable for mass production is 1.15 to 1.35, and the peripheral range with a center value of 1.25 is considered to be the most suitable.
- the value (ApZAc) obtained by dividing the aspect ratio Ap of the outermost control hole 117 of the main body 116 by the aspect ratio Ac of the control hole 117 located at the center of the main body 116 (ApZAc) is, for example, 0.65 to 0.95. It is considered to be a range (although it is not limited to this range depending on other conditions).
- a range suitable for mass production is considered to be 0.7 to 0.9, but a peripheral range centered at 0.8 is considered to be the most suitable.
- the oblique component cobalt atoms collide with the inner peripheral surface of the control hole of the collimator and are trapped, and only the vertical component cobalt atoms reach the wafer.
- This is slower than the sputtering method, and the rate of the slowdown depends on the aspect ratio of the control hole provided in the collimator. That is, as the aspect ratio of the control hole provided in the collimator increases, the film forming speed decreases. Therefore, by making the aspect ratio of the control hole provided in the center of the collimator larger than the aspect ratio of the control hole provided in the periphery of the collimator, the deposition rate of the conore film in the wafer surface can be improved. Can be made substantially uniform.
- the aspect ratio of the control hole located at the periphery of the collimator is smaller than that of the control hole located at the center, the amount of cobalt atoms passing through the control hole located at the periphery is reduced.
- the thickness distribution of the cobalt film in the wafer surface can be controlled uniformly over the entire wafer because the amount of cobalt atoms is larger than the amount of cobalt atoms passing through the wafer.
- the aspect ratio of many control holes of the collimator that was insufficient at the periphery of the wafer was set so that the collimator could eliminate the cobalt film deposited on the wafer in response to the non-uniform film thickness on the wafer surface. Is done.
- the hole depth d is 12.5 mm.
- This type of collimator is called a biconvex lens collimator. This is almost symmetrical in the upper, lower, left, and right directions (it goes without saying that it is not limited to such a target shape). This is done for the following reasons. By repeating the sputtering, a cobalt film is rapidly deposited on the target side of the collimator. In this state, since the collimator is deformed, the collimator is used upside down every several sputtering processes in order to balance the upper and lower volume films.
- the aperture ratio of the opening (the area of the opening is divided by the area of the upper surface of the wafer based on the orthogonal projection of the collimator onto the wafer surface) (Or its percentage), it is desirable to remove the deposited cobalt film by cleaning the collimator when the deposited cobalt film thickness becomes about 0.2 mm.
- the deposition rate is reduced from 1Z6 to 1Z8 as compared with sputtering without a collimator, ie, non-collimated sputtering.
- the partition walls should be almost vertical and the opening rate of the collimator should be 80% or more. (Approximately 91% in this embodiment). Also, in order to achieve such a high aperture ratio, a hexagonal close-packed lattice array in which the shape of the unit aperture is almost a regular hexagon (when considering the uniformity of deposition as a whole, It is desirable that the sizes be almost the same. (The same applies to nickel silicide as well.)
- the diameter of the wafer is about 200 mm
- the diameter of the target is about 330 mm
- the diameter of the entire collimator opening (control hole) is about 315 mm
- the minimum distance between the target surface and the collimator is 46 mm. It goes without saying that the dimensions are not limited to these values. It is desirable that the thickness of the control holes, that is, the partition walls that separate the individual openings, be around 1 mm on an average basis. Also, considering the deformation during use, 0. 7mm or more is suitable for mass production. Nearest in the aspect ratio (A) of the opening near the center
- the wafer 1 is washed, and thereafter, the wafer 1 is heated to, for example, 200 ° C. in a processing chamber different from the sputtering chamber 101 of the sputtering apparatus 100.
- the wafer 1 is loaded into the sputtering chamber 101 of the sputtering apparatus 100 from the loading / unloading port 103, and delivered to the upper surface of the electrostatic chuck 110.
- the sputtering chamber 101 is evacuated to a predetermined pressure in advance.
- the electrostatic chuck 110 is raised by the lift 109, and the wafer 1 placed on the upper surface of the electrostatic chuck 110 is set at a preset height.
- an argon gas 105 as a discharge gas is supplied to the sputtering chamber 101 from the gas supply pipe 106 until the sputtering chamber 101 reaches a predetermined pressure.
- the flow rate of the argon gas 105 is, for example, 15 to 150 sccm.
- the temperature of the wafer 1 also gradually rises and is set to a predetermined temperature, for example, 420 ° C.
- a DC voltage or a high-frequency voltage is applied between the target 108 and the wafer 1 by the backing plate 107 and the electrostatic chuck.
- the magnetic plate 113 is rotated by the rotating shaft 114 while being applied through the terminal 110.
- the DC power when a DC voltage is applied is set, for example, to 500 W to 2000 W, and the flow rate of the argon gas is set to 15 to 40 sccm.
- the pressure of the argon atmosphere is, for example, 0.4 to 2 Pa (not limited to this range), and the target distance (the shortest distance between the target 108 and the wafer 1 during operation) is , For example, 90 mm.
- the target 108 is sputtered by argon ions, and cobalt particles are sputtered from the target 108 as sputtered particles.
- the cobalt particles struck out of the target 108 fly in the direction of the wafer 1, pass through a number of control holes 117 of the collimator 115, and adhere to the wafer 1.
- a cobalt film (first film) 13 is deposited on the main surface (integrated circuit forming surface) of the substrate (wafer) 1.
- the film thickness of the cobalt film 13 is considered to be, for example, 3 nm to 20 nm in an appropriate range (it is not limited to this range depending on other conditions).
- the range suitable for mass production is considered to be 5 nm to 15 nm, but the peripheral range from 7 nm to 10 ⁇ m with 8.5 nm as the central value is considered to be the most suitable. If the thickness of the cobalt film 13 is thinner than 3 nm, the effect of low resistance resistance is not sufficiently obtained because the thickness of the cobalt silicide layer formed by the silicide reaction is as thin as about 10.5 nm.
- the thickness of the cobalt film 13 When the thickness of the cobalt film 13 is larger than 20 nm, the thickness of the cobalt silicide layer formed by the silicide reaction becomes about 70 nm, and the junction depth of the pn junction, for example, becomes deeper than 50 nm. May increase.
- the cobalt film 13 is deposited at a temperature of 300 ° C. or higher, preferably 350 ° C. or higher, more preferably 400 ° C. or higher (and lower than 450 ° C.).
- the temperature of the anode 1 was 420 ° C.
- the temperature means the surface temperature of the wafer 1 in the sputtering chamber 101 (the main surface on the integrated circuit formation side).
- FIG. 8 shows an example of the relationship between the sheet resistance failure rate of a polycrystalline silicon film having a cobalt silicide layer formed thereon and the surface temperature of a wafer when a cobalt film is deposited.
- the cobalt silicide layer was formed under the same conditions, and the polycrystalline silicon film was doped with the same concentration of n-type impurities.
- the thickness of the cobalt film is 7, 9, and 11 nm, and the width of the polycrystalline silicon film is 55 nm.
- the sheet resistance failure rate of the silicide-doped polycrystalline silicon film decreases, and becomes approximately 20% or less at 400 ° C or higher.
- the cobalt film is formed at a relatively high temperature, the cobalt and the source and drain regions are formed while forming the film.
- the interface between the cobalt film and the silicon in the source and drain regions reacts with the silicon (polycrystalline silicon) to make the interface flat, and conoreto silicide formed by the subsequent silicide reaction Poor sheet resistance of the layer can be reduced.
- the interface between the cobalt film and single-crystal silicon Ueno
- the sheet resistance of the cobalt silicide layer can be reduced.
- electrostatic chuck 110 is used for holding and heating wafer 1. Since the electrostatic chuck 110 has good adhesion to the wafer 1, it has good temperature control and temperature distribution characteristics. However, even with the use of the electrostatic chuck 110, a temperature difference of about 30 ° C. is generated between the surface temperature of the wafer 1 and the surface temperature of the wafer 1. It is necessary to set the temperature of the hook 110 to about 450 ° C. Not only the electrostatic chuck 110 but also another type of chuck, for example, a mechanical clamp may be used. However, even if a mechanical clamp is used, a temperature difference of about 70 to 80 ° C. is generated between the surface temperature of the wafer 1 and the surface temperature of the wafer 1 as in the case of the electrostatic chuck 110. In order to reach about C, it is necessary to set the temperature of the mechanical clamp to about 490-500 ° C.
- the above-described sputtering operation is stopped, and a heat treatment (hold annealing; third heat treatment) of wafer 1 is performed in an argon atmosphere.
- a heat treatment hold annealing; third heat treatment
- the interface between the source / drain (n + type semiconductor region 11, p + type semiconductor region 12) formed on the substrate 1 and the cobalt film 13 and the gate electrode 7 made of a polycrystalline silicon film are formed.
- a dicobalt silicide (Co Si) layer 16a is formed on the interface between the silicon oxide layer and the conoreto film 13.
- the heat treatment be performed at a low temperature (third temperature) such that the entire film is not converted into a silicide layer, for example, a temperature range of 300 ° C. or more and less than 450 ° C. (surface temperature of wafer 1).
- the heat treatment was performed while maintaining the surface temperature of the wafer 1 at, for example, 420 ° C. and setting the flow rate of the argon gas to 15 force / 40 sccm. This heat treatment is carried from the sputtering chamber 101. It can be done after it is issued, or it can be omitted.
- wafer 1 is naturally cooled. Thereafter, the lift 109 is lowered, and the wafer 1 held by the electrostatic chuck 110 is returned to the loading / unloading position. Subsequently, the wafer 1 on which the film has been formed is carried out of the sputtering chamber 101. After that, it is cooled to about 50 ° C. or lower in a processing chamber different from the sputtering chamber 101, and is carried out of the sputtering apparatus 100.
- FIG. 10 (a) shows the in-wafer film thickness distribution showing the in-wafer film thickness distribution of a cobalt film formed on a dummy wafer (an actual integrated circuit pattern is formed on a wafer).
- FIG. 3B is a schematic plan view showing measurement positions on the wafer.
- a plurality of control holes according to the present embodiment are formed using a collimator (uniform aspect collimator) in which the aspect ratio is set to 1 to 1.25 from the outside to the center.
- 4 shows a film thickness distribution in a wafer surface. The cobalt film is formed by the sputtering apparatus 100 described above.
- the thickness of the cobalt film at the center of the wafer tends to be larger than that at the periphery, and the uniformity of the film thickness distribution in the wafer surface is ⁇ 3.1%. You. In contrast, in the collimator according to the present embodiment, the tendency of the cobalt film thickness to increase at the central portion of the wafer is eliminated, and the uniformity of the film thickness distribution on the wafer surface is improved to ⁇ 0.8%. .
- FIG. 11A is an in-wafer film thickness distribution table showing the in-wafer film thickness distribution of the cobalt silicide layer formed by the silicide reaction
- FIG. FIG. 4 is a schematic plan view showing an upper measurement position.
- Fig. 11 (a) shows the formation of a cobalt film using a collimator (vertical symmetric convex lens type collimator) in which the aspect ratio of many control holes according to the present embodiment is set to 1 to 1.25 from the outside to the center. Then, using a collimator in which the thickness distribution of the cobalt silicide layer formed by the silicidation reaction in the wafer surface and the aspect ratio of a large number of control holes studied by the present inventors were uniformly set throughout.
- a collimator vertical symmetric convex lens type collimator
- Cobalt silicide formed by forming a cobalt film and using this to form a silicide reaction 3 shows a film thickness distribution of a layer in a wafer surface.
- the cobalt film is formed by the sputtering device 100 described above.
- a cobalt silicide layer is formed on the polycrystalline silicon film under the same conditions, and the polycrystalline silicon film is doped with the same concentration of n-type impurities or p-type impurities.
- the thickness of the cobalt silicide layer at the center of the wafer tends to be larger than that at the periphery, and the uniformity of the film thickness distribution within the wafer surface is ⁇ 6.11. %.
- the collimator (vertical symmetric convex lens type collimator) according to the present embodiment the tendency of the thickness of the cobalt silicide layer to increase at the central portion of the wafer is eliminated, and the uniformity of the film thickness distribution in the wafer surface is eliminated. Is improved to ⁇ 2.6%. From FIGS. 10 and 11, it is clear that the thickness of the cobalt film is directly reflected on the thickness of the cobalt silicide layer.
- titanium nitride having a thickness of about 10 to 20 nm is formed on the cobalt film 13.
- TiN film (second film) 14 is deposited.
- the titanium nitride film 14 is used as an oxidation barrier film that prevents the surface of the cobalt film 13 from being oxidized in the process of forming the cobalt silicide layer.
- a metal nitride compound film such as a tungsten nitride (WN) film or a tantalum nitride (TaN) film can be used as the oxidation barrier film.
- the deposition of the titanium nitride film 14 is performed at such a low temperature that the silicide reaction between the substrate 1 and the cobalt film 13 deposited on the surface of the substrate 1 proceeds rapidly.
- a titanium (Ti) film (third film) 15 having a thickness of about 5 lOnm may be deposited on the titanium nitride film 14. Since the titanium nitride film 14 becomes a columnar crystal by the heat treatment, it is presumed that the cobalt film 13 which transmits oxygen and does not sufficiently function as an oxidation preventing film is slightly oxidized. Therefore, a titanium film 15 is formed on the surface of the titanium nitride film 14, and the effect of preventing the cobalt film 13 from oxidizing is improved by using the oxygen trapping effect of the titanium film 15.
- the titanium nitride film 14 (or a laminated film of the titanium nitride film 14 and the titanium film 15) is not deposited.
- the wafer 1 can be moved without being exposed to the outside air, so that the oxidation-resistant barrier film is used.
- Function as titanium nitride film 1 4 (or a laminated film of the titanium nitride film 14 and the titanium film 15) is not necessarily required.
- the wafer 1 is subjected to a heat treatment (first annealing; first heat treatment) in a non-oxidizing gas atmosphere, as shown in FIG. )
- a heat treatment first annealing; first heat treatment
- a non-oxidizing gas atmosphere as shown in FIG.
- a silicide layer containing a as a main component into a cobalt monosilicide (CoSi) layer 16b.
- the silicide reaction proceeds rapidly at the interface between the source and drain (the n + type semiconductor region 11 and the p + type semiconductor region 12) and the cobalt film 13 and at the interface between the gate electrode 7 and the cobalt film 13.
- (CoSi) layer is converted into a silicide layer 16b whose main component is a temperature that does not substantially generate cobalt disilicide (CoSi).
- the surface temperature of the wafer 1 is set to, for example, 450 ° C. in a nitrogen gas atmosphere, and a heat treatment of, for example, an RTA (Rapid Thermal Anneal) method is performed for 90 seconds.
- RTA Rapid Thermal Anneal
- the wafer 1 is mixed with ammonia (NH 2) and hydrogen peroxide (H 2 O 2).
- the titanium nitride film 14 (or the laminated film of the titanium nitride film 14 and the titanium film 15) is removed by wet etching using a 3 2 2 mixed solution, and then a mixed solution of hydrochloric acid (HC1) and hydrogen peroxide is removed. Unused cobalt film 13 is removed by etching. If the titanium nitride film 14 (or the laminated film of the titanium nitride film 14 and the titanium film 15) is not deposited on the conorelet film 13, the mixed acid (phosphoric acid (HPO), nitric acid (HNO), and acetic acid (CHCOOH )) And hydrogen peroxide
- HPO phosphoric acid
- HNO nitric acid
- CHCOOH acetic acid
- Unreacted cobalt film 13 is removed by wet etching using the mixed solution.
- the wafer 1 is subjected to a heat treatment (second annealing; second heat treatment) in a non-oxidizing gas atmosphere, thereby obtaining the cobalt monosilicide (CoSi) as shown in FIG.
- the silicide layer mainly composed of the layer 16b is converted to a cobalt disilicide (CoSi) layer 16.
- the heat treatment is desirably performed at a temperature higher than the first annealing (second temperature), specifically, in a temperature range of 600 ° C. or more and less than 850 ° C. (surface temperature of the wafer 1).
- the surface temperature of the wafer 1 is set to, for example, 745 ° C. in a nitrogen gas atmosphere, and the RTA heat treatment is performed, for example, for 30 seconds.
- the process of forming a silicide layer for depositing cobalt at a relatively low temperature is described in Japanese Patent Application No. 2002-361700 (filed on Feb. 13, 2002) by Ichinose et al. This corresponds to U.S. Application No. 10Z733377 (US The filing date is December 12, 2003).
- the thickness of the cobalt disilicide layer formed by the silicide reaction is about 3.5 times the thickness of the cobalt film ⁇ (Silicon VLSI Technology, James D. Plummer et. Al, Department of Electrical Engineering Stanford University (See Table 5) . If the thickness of the Connold film 13 is 10 nm, the thickness of the cobalt disilicide layer 16 is about 35 nm. In the present embodiment, the source and the drain (the n + type semiconductor region 11, The junction depth of the pn junction of the p + type semiconductor region 12) is about 50 to 300 nm, and the cobalt silicide layer 16 does not reach the pn junction.
- the distance from the cobalt disilicide layer 16 to the pn junction is about 10 nm or more.
- the thickness of the cobalt disilicide layer 16 is also non-uniform. For this reason, in the region where the cobalt film 13 is formed thick, the cobalt disilicide layer 16 becomes thicker than the designed value, and approaches or contacts the pn junction to generate a leak current.
- the cobalt disilicide layer 16 having a uniform thickness is formed in the wafer surface.
- the distance from the silicide layer 16 to the pn junction can be ensured, and leakage current at the pn junction can be prevented.
- the cobalt disilicide (CoSi) layer 16 is the main component at the interface between
- a silicide layer is formed to complete nMISQn and pMISQp.
- a silicon nitride film 17 and an oxidized silicon film 18 are deposited on the substrate 1 by a CVD method, and then a source and a drain (the n + type semiconductor region 11, the p + type semiconductor region) are deposited.
- a source and a drain are deposited.
- the silicon oxide film 18 and the silicon nitride film 17 on each of the regions 12 are dry-etched to form contact holes 19, tungsten (W) is formed on the silicon oxide film 18 including the inside of the contact holes 19.
- the wiring 20 is formed.
- a wiring plug filling the contact hole is formed by dry etching or CMP.
- a titanium film and a titanium nitride film are sequentially formed by a sputtering method.
- Aluminum and copper (a metal wiring material containing aluminum as a main component) are deposited and deposited by sputtering in an inert atmosphere such as nitrogen at a temperature of, for example, about 300 ° C.
- An aluminum alloy film is formed as a wiring metal film, and a laminated wiring layer is formed.
- the aspect ratio of the multiple control holes 117 provided in the collimator 115 is continuously increased from the periphery to the center of the collimator 115.
- the amount of cobalt atoms passing through the control holes 117 located at the periphery of the collimator 115 can be controlled to be larger than the number of cobalt atoms passing through the control holes 117 located at the center, so that the The film thickness distribution of the cobalt film 13 can be made uniform throughout.
- a cobalt film 13 is formed on the wafer 1 at a temperature range of 300 ° C or more, and the interface between the cobalt film 13 and the substrate 1 is formed at the same time.
- the thickness of the cobalt disilicide layer 16 formed by the silicide reaction in the wafer surface can be made more uniform, and the pn junction It is possible to prevent an increase in leakage current of the portion.
- a low-resistance cono-ret disilicide layer 16 can be formed by a silicide reaction.
- the thickness of the cobalt film 13 in the range of 3 nm to 2 Onm, the effect of lowering the resistance by the cobalt disilicide layer 16 formed by the silicide reaction can be obtained. Also, the thickness of the cobalt disilicide layer 16 can be made shallower than the pn junction, thereby preventing an increase in leak current.
- the shape of the collimator 115 is gradually reduced from the thick central portion to the peripheral portion, and the aspect ratio of the large number of control holes 117 is adjusted to the central force of the collimator 115.
- a film is formed on the wafer 1 Force that uniformly controls the thickness distribution of the cobalt film 13 on the wafer surface of the cobalt film 13
- the aspect ratio in accordance with the tendency of the thickness distribution of the cobalt film 13 on the wafer surface on the wafer 1 Is also good.
- the shape of the collimator 115 should be
- the central part force is made gradually thicker toward the peripheral part, and the upper and lower surfaces of the main body 116 are concavely outwardly symmetrical, like a concave lens (vertical symmetric concave lens collimator).
- the aspect ratio of the large number of control holes 117 continuously increases toward the central portion of the collimator 115 and the periphery thereof, and the film thickness distribution of the cobalt film 13 formed on the wafer 1 in the wafer surface becomes uniform. Can be controlled.
- FIG. 18 is a cross-sectional view of the lens-type collimator according to the present embodiment and various collimators studied by the present inventors.
- the uniform aspect collimator 130 shown in Fig. 18 (c) studied by the present inventors has a substantially uniform thickness, and has a large number of control holes 131 with an aspect ratio of, for example, one. I have.
- the collimator 115 according to the present embodiment is thicker at the center and gradually thinner toward the peripheral portion of the central portion, as shown in FIG. It has a number of control holes 117 that vary continuously from 1 to 1.25 towards the center.
- the collimator 120 according to the present embodiment has a large number of pieces that continuously change from 1.25 to 1 from the outside to the center, for example, from the outside to the center by gradually increasing the force at the center, which is thin at the center, toward the periphery.
- a control hole 121 is provided.
- the aspect ratio of the large number of control holes 117 is not continuously reduced or increased from the center to the periphery of the collimator 115, and is adjusted according to the thickness of the cobalt film 13 required on the wafer 1. Adjustments may be made to reduce or increase the aspect ratio of some areas, or the area force may be continuously reduced or increased around its periphery.
- the surface of the target 108 is shaved non-uniformly, so that the film thickness distribution or the film forming speed of the cobalt film 13 in the wafer surface gradually changes as the sputtering is continued. Therefore, a plurality of collimators 115 having a large number of control holes 117 whose aspect ratio is adjusted according to the shaving state of the target 108 are prepared, and the shaving of the target 108 is prepared. Sputtering may be performed by changing the collimator 115 according to the state. Thus, it is possible to suppress a variation in the film thickness distribution or the film forming speed of the cobalt film 13 in the wafer surface caused by the abrasion of the target 108.
- a collimator 115 having a large number of control holes 117 whose aspect ratio is adjusted according to the temperature distribution of the heat treatment may be used (that is, the first annealing).
- a non-uniform aspect ratio collimator to provide a cobalt deposition distribution that offsets the temperature distribution within the wafer).
- the force using cobalt film 13 for forming the silicide layer is not limited to this.
- a nickel (Ni) film or a cobalt nickel (CoNi) alloy film is used. You may.
- the nickel film becomes a nickel monosilicide (NiSi) layer by a silicide reaction, and the thickness of the nickel disilicide layer is about 2.3 times the thickness of the nickel film.
- the cobalt nickel film becomes a cobalt disilicide (CoSi) layer by a silicide reaction.
- cobalt nickel film for example, a Co content of 98% and a Ni content of 2% can be used, but a little nickel is contained as an impurity in the cobalt disilicide layer.
- nickel addition technology PCT International Publication WO00Zl7939 by Shimadzu et al. (International publication date: March 30, 2000) is strong.
- the first annealing and the second annealing are performed by using an RTA apparatus other than the sputtering apparatus 100, for example, by using a single-wafer multi-chamber sputtering apparatus. May be.
- an oxidation-resistant barrier film (a titanium nitride film 14 or a laminated film of the titanium nitride film 14 and the titanium film 15) is essential. is not.
- processing at different processing temperatures increases the power throughput performed in another apparatus or another chamber of the same apparatus.
- a DC magnetron sputtering apparatus is used as an example.
- the present invention is not limited to this, and another collimation sputtering apparatus may be used.
- a technique may be used in which the magnet of the magnetron sputtering apparatus is devised (magnetic field change control) so that the deposited film distribution becomes uniform.
- the present invention is applied to a method of manufacturing any semiconductor integrated circuit device having a silicide layer formed by a salicide process described when applied to a method of manufacturing a CMOS integrated circuit. be able to. Furthermore, the present invention is applied to all film forming techniques such as forming a film on a printed wiring board, forming a film on a liquid crystal panel in a method of manufacturing a liquid crystal display device, or forming a film on a magnetic disk or compact disk. This comes out.
- the method for manufacturing a semiconductor integrated circuit device of the present invention is suitable for being applied to a salicide process for forming a silicide layer using a metal film formed by sputtering.
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JP2004100408A JP2007273490A (ja) | 2004-03-30 | 2004-03-30 | 半導体集積回路装置の製造方法 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US20090308739A1 (en) * | 2008-06-17 | 2009-12-17 | Applied Materials, Inc. | Wafer processing deposition shielding components |
US20090308732A1 (en) * | 2008-06-17 | 2009-12-17 | Applied Materials, Inc. | Apparatus and method for uniform deposition |
JP2010514940A (ja) * | 2007-01-02 | 2010-05-06 | オーツェー エルリコン バルツェルス アクチェンゲゼルシャフト | 陰極スパッタリングによって方向性を有する層を形成する方法、および上記方法を実施するための装置 |
US8338272B2 (en) | 2008-08-29 | 2012-12-25 | Renesas Electronics Corporation | Method for manufacturing a semiconductor device |
US9960024B2 (en) | 2015-10-27 | 2018-05-01 | Applied Materials, Inc. | Biasable flux optimizer / collimator for PVD sputter chamber |
Families Citing this family (6)
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KR101782355B1 (ko) * | 2009-04-24 | 2017-09-27 | 어플라이드 머티어리얼스, 인코포레이티드 | 웨이퍼 프로세싱 증착 차폐 부품 |
JP5450198B2 (ja) * | 2010-03-25 | 2014-03-26 | セイコーインスツル株式会社 | スパッタリング装置 |
US9831074B2 (en) * | 2013-10-24 | 2017-11-28 | Applied Materials, Inc. | Bipolar collimator utilized in a physical vapor deposition chamber |
JP6364295B2 (ja) * | 2014-09-22 | 2018-07-25 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法およびスパッタリング装置 |
US9543126B2 (en) * | 2014-11-26 | 2017-01-10 | Applied Materials, Inc. | Collimator for use in substrate processing chambers |
KR20180077291A (ko) * | 2015-11-24 | 2018-07-06 | 어플라이드 머티어리얼스, 인코포레이티드 | Vhf-rf pvd 챔버들에서 사용하기 위한 프리-코팅된 실드 |
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JP2010514940A (ja) * | 2007-01-02 | 2010-05-06 | オーツェー エルリコン バルツェルス アクチェンゲゼルシャフト | 陰極スパッタリングによって方向性を有する層を形成する方法、および上記方法を実施するための装置 |
US20090308739A1 (en) * | 2008-06-17 | 2009-12-17 | Applied Materials, Inc. | Wafer processing deposition shielding components |
US20090308732A1 (en) * | 2008-06-17 | 2009-12-17 | Applied Materials, Inc. | Apparatus and method for uniform deposition |
US8338272B2 (en) | 2008-08-29 | 2012-12-25 | Renesas Electronics Corporation | Method for manufacturing a semiconductor device |
US9960024B2 (en) | 2015-10-27 | 2018-05-01 | Applied Materials, Inc. | Biasable flux optimizer / collimator for PVD sputter chamber |
US10347474B2 (en) | 2015-10-27 | 2019-07-09 | Applied Materials, Inc. | Biasable flux optimizer / collimator for PVD sputter chamber |
US10727033B2 (en) | 2015-10-27 | 2020-07-28 | Applied Materials, Inc. | Biasable flux optimizer / collimator for PVD sputter chamber |
US11309169B2 (en) | 2015-10-27 | 2022-04-19 | Applied Materials, Inc. | Biasable flux optimizer / collimator for PVD sputter chamber |
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JP2007273490A (ja) | 2007-10-18 |
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