KR20010066730A - 원자층 증착법을 이용한 금속층 형성방법 및 그 금속층을장벽금속층, 커패시터의 상부전극, 또는 하부전극으로구비한 반도체 소자 - Google Patents
원자층 증착법을 이용한 금속층 형성방법 및 그 금속층을장벽금속층, 커패시터의 상부전극, 또는 하부전극으로구비한 반도체 소자 Download PDFInfo
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- KR20010066730A KR20010066730A KR1020000006251A KR20000006251A KR20010066730A KR 20010066730 A KR20010066730 A KR 20010066730A KR 1020000006251 A KR1020000006251 A KR 1020000006251A KR 20000006251 A KR20000006251 A KR 20000006251A KR 20010066730 A KR20010066730 A KR 20010066730A
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- Prior art keywords
- layer
- metal layer
- metal
- nitrogen
- atomic
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 292
- 239000002184 metal Substances 0.000 title claims abstract description 292
- 238000000034 method Methods 0.000 title claims abstract description 104
- 238000000231 atomic layer deposition Methods 0.000 title claims abstract description 66
- 239000004065 semiconductor Substances 0.000 title claims abstract description 62
- 230000004888 barrier function Effects 0.000 title claims description 73
- 239000003990 capacitor Substances 0.000 title claims description 24
- 229910010037 TiAlN Inorganic materials 0.000 claims abstract description 60
- 238000010926 purge Methods 0.000 claims abstract description 38
- 239000000758 substrate Substances 0.000 claims abstract description 37
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims description 122
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 121
- 229910052757 nitrogen Inorganic materials 0.000 claims description 71
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 61
- 229910052760 oxygen Inorganic materials 0.000 claims description 61
- 239000001301 oxygen Substances 0.000 claims description 61
- 239000000203 mixture Substances 0.000 claims description 55
- 238000009792 diffusion process Methods 0.000 claims description 45
- 239000010936 titanium Substances 0.000 claims description 40
- 229910052782 aluminium Inorganic materials 0.000 claims description 39
- 238000002347 injection Methods 0.000 claims description 30
- 239000007924 injection Substances 0.000 claims description 30
- 238000002425 crystallisation Methods 0.000 claims description 29
- 230000008025 crystallization Effects 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 23
- 229910052719 titanium Inorganic materials 0.000 claims description 23
- 238000000151 deposition Methods 0.000 claims description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 20
- 229910052726 zirconium Inorganic materials 0.000 claims description 20
- 229910052721 tungsten Inorganic materials 0.000 claims description 18
- 229910052735 hafnium Inorganic materials 0.000 claims description 16
- 229910052750 molybdenum Inorganic materials 0.000 claims description 16
- 229910052715 tantalum Inorganic materials 0.000 claims description 16
- 229910052758 niobium Inorganic materials 0.000 claims description 15
- 229910052710 silicon Inorganic materials 0.000 claims description 15
- 239000004020 conductor Substances 0.000 claims description 14
- 229910052796 boron Inorganic materials 0.000 claims description 12
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 claims description 12
- PXSHDOMYSLTUTJ-UHFFFAOYSA-N [Ti]N Chemical compound [Ti]N PXSHDOMYSLTUTJ-UHFFFAOYSA-N 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 10
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 7
- SWWQQSDRUYSMAR-UHFFFAOYSA-N 1-[(4-hydroxyphenyl)methyl]-1,2,3,4-tetrahydroisoquinoline-6,7-diol;hydrochloride Chemical group Cl.C1=CC(O)=CC=C1CC1C2=CC(O)=C(O)C=C2CCN1 SWWQQSDRUYSMAR-UHFFFAOYSA-N 0.000 claims description 5
- 229910017464 nitrogen compound Inorganic materials 0.000 claims description 3
- 150000002830 nitrogen compounds Chemical class 0.000 claims description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 claims 1
- 238000007740 vapor deposition Methods 0.000 claims 1
- 229910003074 TiCl4 Inorganic materials 0.000 abstract 1
- 238000005137 deposition process Methods 0.000 abstract 1
- 238000002513 implantation Methods 0.000 abstract 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 abstract 1
- 239000010408 film Substances 0.000 description 82
- 230000003647 oxidation Effects 0.000 description 22
- 238000007254 oxidation reaction Methods 0.000 description 22
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 20
- 229920005591 polysilicon Polymers 0.000 description 20
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 12
- 230000008021 deposition Effects 0.000 description 11
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 8
- 150000002739 metals Chemical class 0.000 description 8
- 238000005229 chemical vapour deposition Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000001039 wet etching Methods 0.000 description 7
- 229910052786 argon Inorganic materials 0.000 description 6
- 239000012298 atmosphere Substances 0.000 description 5
- 229910052734 helium Inorganic materials 0.000 description 5
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 5
- 229910052697 platinum Inorganic materials 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910002367 SrTiO Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910052745 lead Inorganic materials 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 229910010282 TiON Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- 229910001936 tantalum oxide Inorganic materials 0.000 description 3
- 229910015801 BaSrTiO Inorganic materials 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910004200 TaSiN Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229910008482 TiSiN Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- QRXWMOHMRWLFEY-UHFFFAOYSA-N isoniazide Chemical compound NNC(=O)C1=CC=NC=C1 QRXWMOHMRWLFEY-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000005300 metallic glass Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000005546 reactive sputtering Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—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
- H01L21/06—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 selenium or tellurium in uncombined form other than as impurities in semiconductor bodies of other materials
- H01L21/10—Preliminary treatment of the selenium or tellurium, its application to the foundation plate, or the subsequent treatment of the combination
- H01L21/108—Provision of discrete insulating layers, i.e. non-genetic barrier layers
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- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/34—Nitrides
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- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45527—Atomic layer deposition [ALD] characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations
- C23C16/45529—Atomic layer deposition [ALD] characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations specially adapted for making a layer stack of alternating different compositions or gradient compositions
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- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45527—Atomic layer deposition [ALD] characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations
- C23C16/45531—Atomic layer deposition [ALD] characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations specially adapted for making ternary or higher compositions
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28556—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by chemical means, e.g. CVD, LPCVD, PECVD, laser CVD
- H01L21/28562—Selective deposition
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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
- H01L21/76843—Barrier, adhesion or liner layers formed in openings in a dielectric
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- 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
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76841—Barrier, adhesion or liner layers
- H01L21/76843—Barrier, adhesion or liner layers formed in openings in a dielectric
- H01L21/76846—Layer combinations
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- H—ELECTRICITY
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- 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
- H01L21/76856—After-treatment introducing at least one additional element into the layer by treatment in plasmas or gaseous environments, e.g. nitriding a refractory metal liner
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- 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
- H01L21/7687—Thin films associated with contacts of capacitors
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- H01L28/40—Capacitors
- H01L28/60—Electrodes
- H01L28/75—Electrodes comprising two or more layers, e.g. comprising a barrier layer and a metal layer
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- Condensed Matter Physics & Semiconductors (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Semiconductor Memories (AREA)
- Chemical Vapour Deposition (AREA)
- Electrodes Of Semiconductors (AREA)
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- Physical Deposition Of Substances That Are Components Of Semiconductor Devices (AREA)
Abstract
Description
시료 1 | 시료 2 | 시료 3 | |
Ti | 35% | 24% | 21% |
Al | 15% | 26% | 31% |
N | 30% | 35% | 35% |
C | 17% | 10% | 8% |
Cl | 3% | 3% | 3% |
Ti:Al | 1:0.43 | 1:1.1 | 1:1.48 |
비저항ρ(μΩ-cm) | 589 | 3701 | 9161 |
Claims (36)
- 반도체 기판 상에 반응성 금속(A), 질소(N), 및 상기 반응성 금속과 질소의 결정화를 방지하기 위한 알루미늄(B)의 각 소스가스들을 펄스 형태로 주입하여 상기 반도체 기판 상에 상기 소스가스들을 화학흡착시킴으로써 복수의 원자층들이 적층된 A-B-N 구조의 금속층 형성방법에 있어서,상기 각 소스가스들을 서로 교번되도록 순서를 정하여 주입함으로써 각 원자층이 서로 교대로 배열되도록 하고, 상기 각 소스가스의 주입회수를 조절하여 상기 금속층의 조성비를 결정함을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제1항에 있어서, 상기 반응성 금속(A)은 Ti, Ta, W, Zr, Hf, Mo 및 Nb로 이루어진 일군에서 선택된 어느 하나인 것을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제1항에 있어서, 상기 알루미늄의 소스 가스의 주입회수를 조절함으로써 상기 금속층의 전기전도도 및 저항을 결정함을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제1항에 있어서, 상기 금속층이 TiAlN층인 경우, 상기 TiAlN층에서의 Ti에 대한 Al의 함량은 10∼35 %로 함을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제1항에 있어서, 상기 반응성 금속(A)이 Ti인 경우, Ti의 소스가스는 TiCl4, TDMAT(Tetrakis DeMethyl Amino Titanium) 및 TDEAT(Tetrakis DeEthyl Amino Titanium)으로 이루어진 일군에서 선택된 어느 하나를 사용함을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제1항에 있어서, 상기 알루미늄(Al)의 소스가스는 TMA(TriMethyl Aluminum), TEA(TriEthyl Aluminum), TIBA(Tri-I-Buthyl Aluminum) 및 AlClx으로 이루어진 일군에서 선택된 어느 하나를 사용함을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제1항에 있어서, 상기 질소(N)의 소스가스로는 N2또는 NH3를 사용함을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제1항에 있어서, 상기 소스가스를 퍼지하기 위한 퍼지가스는 상기 금속층 형성시 처음부터 끝까지 연속적으로 주입됨을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제1항에 있어서, 상기 소스가스를 퍼지하기 위한 퍼지가스는 상기 금속층 형성시 각 소스가스가 주입되지 않는 시간에 주입되도록 펄스형으로 주입됨을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 반도체기판 상에 콘택홀을 구비한 절연막; 상기 콘택홀의 저면 상에 형성된 도전성 물질막; 및 상기 콘택홀 내부의 도전성 물질막 상부에 형성된 하부전극, 상기 하부전극 상에 형성된 고유전막 및 상기 고유전막 상부에 형성된 상부전극을 포함하는 커패시터를 구비한 반도체 소자에 있어서,상기 콘택홀 내부의 도전성 물질막과 상기 하부전극 사이에, 반응성 금속(A), 질소(N), 및 상기 반응성 금속 및 질소의 결정화를 방지하기 위한 알루미늄(B)이 원자층 증착법에 의하여 서로 교대로 적층된 상태로 배열된 원자층들로 구성된 A-B-N 구조의 장벽금속층을 구비하며, 상기 장벽금속층의 각 원자층의 조성비는 각 원자층의 적층회수에 의하여 결정됨을 특징으로 하는 반도체 소자.
- 제10항에 있어서, 상기 반응성금속은 Ti, Ta, W, Zr, Hf, Mo 및 Nb로 이루어진 일군에서 선택된 어느 하나인 것을 특징으로 하는 반도체 소자.
- 제10항에 있어서, 상기 알루미늄에 의한 원자층의 적층회수의 비율에 따라 상기 장벽금속층의 전기전도도 및 저항을 결정함을 특징으로 하는 반도체 소자.
- 제10항에 있어서, 상기 장벽금속층이 TiAlN인 경우 알루미늄(Al)의 조성비가 커질수록 장벽금속층의 비저항이 커짐을 특징으로 하는 반도체 소자.
- 제10항에 있어서, 상기 장벽금속층이 TiAlN인 경우 반응성금속에 대한 Al의 함량은 10∼35 % 임을 특징으로 하는 반도체 소자.
- 반도체기판 상의 물질층 상에 형성된 하부전극, 상기 하부전극 상에 형성된 고유전막 및 상기 고유전막 상부에 형성된 상부전극을 구비한 커패시터를 포함하는 반도체 소자에 있어서,상기 하부 전극은 A-B-N 구조의 질소화합물을 구성하는 반응성 금속(A), 질소(N), 및 상기 반응성 금속 및 질소의 결정화를 방지하기 위한 비정질 결합용 원소(B)가 원자층 증착법에 의하여 서로 교대로 적층된 상태로 배열된 원자층들로 구성되며, 상기 하부전극의 각 원자층의 조성비는 각 원자층의 적층회수에 의하여 결정됨을 특징으로 하는 반도체 소자.
- 제15항에 있어서, 상기 반응성 금속(A)은 Ti, Ta, W, Zr, Hf, Mo 및 Nb로 이루어진 일군에서 선택된 어느 하나인 것을 특징으로 하는 반도체 소자.
- 제15항에 있어서, 상기 반응성 금속 및 질소의 결정화를 방지하기 위한 비정질 결합용 원소(B)는 Si 또는 B인 것을 특징으로 하는 반도체 소자.
- 제15항에 있어서, 상기 반응성 금속 및 질소의 결정화를 방지하기 위한 비정질 결합용 원소(B)는 Al인 것을 특징으로 하는 반도체 소자.
- 제15항에 있어서, 상기 상부 전극은 A-B-N 구조의 질소화합물을 구성하는 반응성 금속(A), 질소(N), 및 상기 반응성 금속 및 질소의 결정화를 방지하기 위한 비정질 결합용 원소(B)가 원자층 증착법에 의하여 서로 교대로 적층된 상태로 배열된 원자층들로 구성되며, 상기 상부전극의 각 원자층의 조성비는 각 원자층의 적층회수에 의하여 결정됨을 특징으로 하는 반도체 소자.
- 제15항에 있어서, 상기 비정질 결합용 원소에 의한 원자층의 적층회수의 비율에 따라 상기 하부 전극의 전기전도도 및 저항을 결정함을 특징으로 하는 반도체 소자.
- 반도체 기판 상에 A-B-N 구조의 질소화합물을 구성하는 반응성 금속(A), 질소(N) 및 상기 반응성 금속 및 질소의 결정화를 방지하기 위한 비정질결합용 원소(B)의 각 소스가스를 펄스형태로 서로 교번되도록 순서를 정하여 공급하고, 조성비를 조절하게끔 상기 각 소스가스의 주입회수를 조절하면서 공급하여 상기 반도체 기판 상에 화학흡착시킴으로써 A-B-N 구조의 금속층을 형성하는 단계; 및상기 금속층 상에 산소 확산 방지층을 형성하여 상기 금속층과 산소 확산 방지층이 각각 복수회 증착된 다중 금속층을 형성하는 단계를 포함하여 이루어지는 것을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제21항에 있어서, 상기 산소 확산 방지층은 상기 금속층이 형성된 반도체 기판 상에 금속 원소 및 산소의 소스 가스를 펄스 형태로 서로 교번되도록 공급하여 형성하는 것을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제21항에 있어서, 상기 산소 확산 방지층은 상기 금속층 상에 원자층 증착법으로 산소가 포함된 물질층을 형성하는 단계와, 상기 금속층 및 물질층이 형성된 반도체 기판을 열처리하는 단계를 포함하여 얻어지는 것을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제21항에 있어서, 상기 반응성 금속(A)은 Ti, Ta, W, Zr, Hf, Mo 및 Nb로 이루어진 일군에서 선택된 어느 하나인 것을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제21항에 있어서, 상기 반응성 금속과 질소의 결정화를 방지하기 위한 비정질 결합용 원소(B)는 Al, Si 및 B로 이루어진 일군에서 선택된 어느 하나인 것을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제21항에 있어서, 상기 비정질 결합용 원소의 소스 가스의 주입회수를 조절함으로써 상기 금속층의 전기전도도 및 저항을 결정함을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제21항에 있어서, 상기 반응성 금속(A)이 Ti인 경우, Ti의 소스가스는 TiCl4, TDMAT(Tetrakis DeMethyl Amino Titanium) 및 TDEAT(Tetrakis DeEthyl Amino Titanium)으로 이루어진 일군에서 선택된 어느 하나를 사용함을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제21항에 있어서, 상기 반응성 금속과 질소의 결정화를 방지하기 위한 비정질 결합용 원소(B)가 Al인 경우, 상기 Al의 소스가스는 TMA(TriMethyl Aluminum), TEA(TriEthyl Aluminum), TIBA(Tri-I-Buthyl Aluminum) 및 AlClx으로 이루어진 일군에서 선택된 어느 하나를 사용함을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제21항에 있어서, 상기 질소(N)의 소스가스로는 N2또는 NH3을 사용함을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 제21항에 있어서, 상기 산소 확산 방지층은 알루미늄 산화막으로 형성하는 것을 특징으로 하는 원자층 증착법을 이용한 금속층 형성방법.
- 반도체기판 상에 콘택홀을 구비한 절연막; 상기 콘택홀의 저면 상에 형성된 도전성 물질막; 및 상기 콘택홀 내부의 도전성 물질막 상부에 형성된 하부전극, 상기 하부전극 상에 형성된 고유전막 및 상기 고유전막 상부에 형성된 상부전극을 포함하는 커패시터를 구비한 반도체 소자에 있어서,상기 콘택홀 내부의 도전성 물질막과 상기 하부전극 사이에, 반응성 금속(A), 질소(N) 및 상기 반응성 금속 및 질소의 결정화를 방지하기 위한 비정질결합용 원소(B)가 원자층 증착법에 의하여 서로 교대로 적층되고 적층 회수에 의하여 조성비가 결정되는 A-B-N 구조의 금속층과, 상기 금속층 상에 산소 확산 방지층이 형성되어 상기 금속층과 산소 확산 방지층이 각각 복수회 적층된 장벽 금속층이 형성되어 있는 것을 특징으로 하는 반도체 소자.
- 제31항에 있어서, 상기 산소 확산 방지층 상에 산소가 포함된 물질층이 더 형성되어 있는 것을 특징으로 하는 특징으로 하는 반도체 소자.
- 제31항에 있어서, 상기 반응성금속은 Ti, Ta, W, Zr, Hf, Mo 및 Nb로 이루어진 일군에서 선택된 어느 하나인 것을 특징으로 하는 반도체 소자.
- 제31항에 있어서, 상기 반응성 금속과 질소의 결정화를 방지하기 위한 비정질 결합용 원소(B)는 Al, Si 및 B로 이루어진 일군에서 선택된 어느 하나인 것을 특징으로 하는 반도체 소자.
- 제31항에 있어서, 상기 비정질 결합용 원소에 의한 원자층의 적층회수의 비율에 따라 상기 장벽 금속층의 전기전도도 및 저항을 결정함을 특징으로 하는 반도체 소자.
- 제31항에 있어서, 상기 산소 확산 방지층은 알루미늄 산화막인 것을 특징으로 하는 반도체 소자.
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KR10-2000-0006251A KR100385946B1 (ko) | 1999-12-08 | 2000-02-10 | 원자층 증착법을 이용한 금속층 형성방법 및 그 금속층을장벽금속층, 커패시터의 상부전극, 또는 하부전극으로구비한 반도체 소자 |
US09/511,598 US6287965B1 (en) | 1997-07-28 | 2000-02-23 | Method of forming metal layer using atomic layer deposition and semiconductor device having the metal layer as barrier metal layer or upper or lower electrode of capacitor |
TW089105232A TW444278B (en) | 1999-12-08 | 2000-03-22 | Method of forming metal layer using atomic layer deposition and semiconductor device having the metal layer as barrier metal layer or upper or lower electrode of capacitor |
JP2000371636A JP3949373B2 (ja) | 1999-12-08 | 2000-12-06 | 原子層蒸着法を利用した金属層形成方法およびこれを用いた半導体素子 |
US09/911,313 US6590251B2 (en) | 1999-12-08 | 2001-07-23 | Semiconductor devices having metal layers as barrier layers on upper or lower electrodes of capacitors |
JP2006328561A JP2007081427A (ja) | 1999-12-08 | 2006-12-05 | 原子層蒸着法を利用した金属層形成方法およびこれを用いた半導体素子 |
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KR10-2000-0006251A KR100385946B1 (ko) | 1999-12-08 | 2000-02-10 | 원자층 증착법을 이용한 금속층 형성방법 및 그 금속층을장벽금속층, 커패시터의 상부전극, 또는 하부전극으로구비한 반도체 소자 |
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- 2000-12-06 JP JP2000371636A patent/JP3949373B2/ja not_active Expired - Fee Related
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2001
- 2001-07-23 US US09/911,313 patent/US6590251B2/en not_active Expired - Fee Related
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2006
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KR100504554B1 (ko) * | 2000-12-21 | 2005-08-01 | 주식회사 하이닉스반도체 | 반도체 소자의 캐패시터 제조 방법 |
KR100604923B1 (ko) * | 2005-01-04 | 2006-07-28 | 삼성전자주식회사 | 원자층 증착법에 의한 티탄 알루미늄 질화막 형성방법 및이를 이용하여 제조된 발열 전극을 갖는 상변화 메모리 소자 |
US7585692B2 (en) | 2005-01-04 | 2009-09-08 | Samsung Electronics Co., Ltd. | Thin film layer, heating electrode, phase change memory including thin film layer and methods for forming the same |
WO2006098565A1 (en) * | 2005-03-16 | 2006-09-21 | Ips Ltd. | Method of depositing thin film using ald process |
KR100709033B1 (ko) * | 2005-08-06 | 2007-04-18 | 주식회사 아이피에스 | HfSiN 박막증착방법 |
KR100719803B1 (ko) * | 2005-09-08 | 2007-05-18 | 주식회사 아이피에스 | 원자층 증착 방법을 이용한 티타늄알미늄나이트라이드 박막형성 방법 |
KR20100002128A (ko) * | 2008-06-25 | 2010-01-06 | 가부시키가이샤 히다치 고쿠사이 덴키 | 반도체 장치의 제조 방법 및 기판 처리 장치 |
KR20200127949A (ko) * | 2013-03-14 | 2020-11-11 | 에이에스엠 아이피 홀딩 비.브이. | 저온에서 SiN을 퇴적시키기 위한 Si 전구체들 |
US11289327B2 (en) | 2013-03-14 | 2022-03-29 | Asm Ip Holding B.V. | Si precursors for deposition of SiN at low temperatures |
US11587783B2 (en) | 2013-03-14 | 2023-02-21 | Asm Ip Holding B.V. | Si precursors for deposition of SiN at low temperatures |
US9963784B2 (en) | 2013-10-18 | 2018-05-08 | Tokyo Electron Limited | Film forming method and film forming apparatus |
US11367613B2 (en) | 2014-09-17 | 2022-06-21 | Asm Ip Holding B.V. | Deposition of SiN |
US11133181B2 (en) | 2015-08-24 | 2021-09-28 | Asm Ip Holding B.V. | Formation of SiN thin films |
US11784043B2 (en) | 2015-08-24 | 2023-10-10 | ASM IP Holding, B.V. | Formation of SiN thin films |
CN112292476A (zh) * | 2018-06-28 | 2021-01-29 | 东京毅力科创株式会社 | 成膜方法、成膜系统以及成膜装置 |
Also Published As
Publication number | Publication date |
---|---|
TW444278B (en) | 2001-07-01 |
US20020000598A1 (en) | 2002-01-03 |
JP3949373B2 (ja) | 2007-07-25 |
US6590251B2 (en) | 2003-07-08 |
JP2007081427A (ja) | 2007-03-29 |
KR100385946B1 (ko) | 2003-06-02 |
JP2001217206A (ja) | 2001-08-10 |
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