JP2011524078A - 銅表面上への選択的コバルト堆積 - Google Patents
銅表面上への選択的コバルト堆積 Download PDFInfo
- Publication number
- JP2011524078A JP2011524078A JP2011507595A JP2011507595A JP2011524078A JP 2011524078 A JP2011524078 A JP 2011524078A JP 2011507595 A JP2011507595 A JP 2011507595A JP 2011507595 A JP2011507595 A JP 2011507595A JP 2011524078 A JP2011524078 A JP 2011524078A
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- JP
- Japan
- Prior art keywords
- cobalt
- substrate
- during
- layer
- copper surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010941 cobalt Substances 0.000 title claims abstract description 168
- 229910017052 cobalt Inorganic materials 0.000 title claims abstract description 168
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title claims abstract description 161
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 73
- 239000010949 copper Substances 0.000 title claims abstract description 73
- 230000008021 deposition Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 136
- 230000008569 process Effects 0.000 claims abstract description 103
- 239000000758 substrate Substances 0.000 claims abstract description 97
- 238000000151 deposition Methods 0.000 claims abstract description 40
- 239000002243 precursor Substances 0.000 claims abstract description 36
- 238000012545 processing Methods 0.000 claims abstract description 30
- 238000005019 vapor deposition process Methods 0.000 claims abstract description 25
- 230000004888 barrier function Effects 0.000 claims abstract description 23
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 21
- 150000001879 copper Chemical class 0.000 claims abstract description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 73
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical group N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 40
- -1 methylcyclopentadienyl Chemical group 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 37
- 229910021529 ammonia Inorganic materials 0.000 claims description 35
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 24
- 239000007789 gas Substances 0.000 claims description 24
- 239000001257 hydrogen Substances 0.000 claims description 24
- 229910052739 hydrogen Inorganic materials 0.000 claims description 24
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 20
- 238000000231 atomic layer deposition Methods 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 14
- 239000003153 chemical reaction reagent Substances 0.000 claims description 10
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 9
- 239000005751 Copper oxide Substances 0.000 claims description 9
- 229910000431 copper oxide Inorganic materials 0.000 claims description 9
- 150000002431 hydrogen Chemical class 0.000 claims description 9
- ZSEHKBVRLFIMPB-UHFFFAOYSA-N cobalt;cyclopenta-1,3-diene Chemical compound [Co].C=1C=C[CH-]C=1 ZSEHKBVRLFIMPB-UHFFFAOYSA-N 0.000 claims description 8
- 125000002097 pentamethylcyclopentadienyl group Chemical group 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 125000000058 cyclopentadienyl group Chemical group C1(=CC=CC1)* 0.000 claims description 6
- ZSWFCLXCOIISFI-UHFFFAOYSA-N endo-cyclopentadiene Natural products C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 claims description 6
- 239000003446 ligand Substances 0.000 claims description 6
- DXONNDNQGWPSSU-UHFFFAOYSA-N [Co]C1C=CC=C1 Chemical compound [Co]C1C=CC=C1 DXONNDNQGWPSSU-UHFFFAOYSA-N 0.000 claims description 5
- 239000007983 Tris buffer Substances 0.000 claims description 4
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 3
- ZPPDMHPYGZZIID-UHFFFAOYSA-N C(C)[Co]C1C=CC=C1 Chemical compound C(C)[Co]C1C=CC=C1 ZPPDMHPYGZZIID-UHFFFAOYSA-N 0.000 claims description 3
- KSHBKZVIDAJCJJ-UHFFFAOYSA-N C[Co]C1C=CC=C1 Chemical compound C[Co]C1C=CC=C1 KSHBKZVIDAJCJJ-UHFFFAOYSA-N 0.000 claims description 3
- HAPVSOMXSKSUFV-UHFFFAOYSA-N N(=O)[Co] Chemical compound N(=O)[Co] HAPVSOMXSKSUFV-UHFFFAOYSA-N 0.000 claims description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical group O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 3
- NZSKIHJMERAYNW-UHFFFAOYSA-N [Co]C1=CC=C1 Chemical compound [Co]C1=CC=C1 NZSKIHJMERAYNW-UHFFFAOYSA-N 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims description 3
- 150000001345 alkine derivatives Chemical class 0.000 claims description 3
- UFTVFWCQVIKGSO-UHFFFAOYSA-N cobalt(2+) 5-methylcyclopenta-1,3-diene Chemical compound [Co++].C[c-]1cccc1.C[c-]1cccc1 UFTVFWCQVIKGSO-UHFFFAOYSA-N 0.000 claims description 3
- 125000003678 cyclohexadienyl group Chemical group C1(=CC=CCC1)* 0.000 claims description 3
- 238000002230 thermal chemical vapour deposition Methods 0.000 claims description 2
- IBZAAOVLBXXVHW-UHFFFAOYSA-N cobalt;ethene Chemical compound [Co].C=C IBZAAOVLBXXVHW-UHFFFAOYSA-N 0.000 claims 1
- 239000010410 layer Substances 0.000 description 106
- 210000002381 plasma Anatomy 0.000 description 56
- 238000005229 chemical vapour deposition Methods 0.000 description 12
- 239000000356 contaminant Substances 0.000 description 11
- 239000003989 dielectric material Substances 0.000 description 11
- 238000011065 in-situ storage Methods 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000005240 physical vapour deposition Methods 0.000 description 6
- 238000005498 polishing Methods 0.000 description 6
- 229910052814 silicon oxide Inorganic materials 0.000 description 6
- 125000003368 amide group Chemical group 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 5
- 229910010271 silicon carbide Inorganic materials 0.000 description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007517 polishing process Methods 0.000 description 4
- 229910052715 tantalum Inorganic materials 0.000 description 4
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 4
- 235000012431 wafers Nutrition 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 3
- 238000005137 deposition process Methods 0.000 description 3
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 3
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 3
- NVOKNHORTXQFMT-UHFFFAOYSA-N CC1=C(C(=C(C1(C)[Co])C)C)C Chemical compound CC1=C(C(=C(C1(C)[Co])C)C)C NVOKNHORTXQFMT-UHFFFAOYSA-N 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 229910021332 silicide Inorganic materials 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
- 239000000243 solution Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- CGHIBGNXEGJPQZ-UHFFFAOYSA-N 1-hexyne Chemical group CCCCC#C CGHIBGNXEGJPQZ-UHFFFAOYSA-N 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- FWQBADUOUPOXQK-UHFFFAOYSA-N [Co].C=C.C=C Chemical compound [Co].C=C.C=C FWQBADUOUPOXQK-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000005103 alkyl silyl group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910000085 borane Inorganic materials 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- ZOCHARZZJNPSEU-UHFFFAOYSA-N diboron Chemical compound B#B ZOCHARZZJNPSEU-UHFFFAOYSA-N 0.000 description 1
- UBHZUDXTHNMNLD-UHFFFAOYSA-N dimethylsilane Chemical compound C[SiH2]C UBHZUDXTHNMNLD-UHFFFAOYSA-N 0.000 description 1
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000008246 gaseous mixture 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
- 239000011521 glass Substances 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- UIUXUFNYAYAMOE-UHFFFAOYSA-N methylsilane Chemical compound [SiH3]C UIUXUFNYAYAMOE-UHFFFAOYSA-N 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
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- 229910000077 silane Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
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- 238000009997 thermal pre-treatment Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- LALRXNPLTWZJIJ-UHFFFAOYSA-N triethylborane Chemical compound CCB(CC)CC LALRXNPLTWZJIJ-UHFFFAOYSA-N 0.000 description 1
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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Classifications
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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
- C23C16/06—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 metallic material
- C23C16/16—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 metallic material from metal carbonyl compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28556—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by chemical means, e.g. CVD, LPCVD, PECVD, laser CVD
-
- 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
- C23C16/02—Pretreatment of the material to be coated
- C23C16/0209—Pretreatment of the material to be coated by heating
- C23C16/0218—Pretreatment of the material to be coated by heating in a reactive atmosphere
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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
- C23C16/02—Pretreatment of the material to be coated
- C23C16/0227—Pretreatment of the material to be coated by cleaning or etching
- C23C16/0245—Pretreatment of the material to be coated by cleaning or etching by etching with a plasma
-
- 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
- C23C16/06—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 metallic material
- C23C16/18—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 metallic material from metallo-organic compounds
-
- 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
- C23C16/45536—Use of plasma, radiation or electromagnetic fields
- C23C16/4554—Plasma being used non-continuously in between ALD reactions
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- 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
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- C23C16/45523—Pulsed gas flow or change of composition over time
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Abstract
Description
Claims (15)
- 基板上の銅表面をキャッピングするための方法であって、
汚染された銅表面および誘電表面を含む基板を処理チャンバー内に位置決めするステップと、
前処理プロセスの間に金属銅表面を形成している間に前記汚染された銅表面を還元剤にさらすステップと、
気相堆積プロセスの間に前記誘電表面を露出したままにしながら前記金属銅表面上にコバルトキャッピング層を選択的に形成するために前記基板をコバルト前駆体ガスにさらすステップと、
前記コバルトキャッピング層および前記誘電表面の上に誘電障壁層を堆積させるステップと
を含む方法。 - 前記前処理プロセスの間に前記金属銅表面を形成するために前記汚染された銅表面上の酸化銅を化学的に還元するステップをさらに含む、請求項1に記載の方法。
- 前記汚染された銅表面は前記還元剤にさらされ、前記前処理プロセスの間にプラズマが点火され、前記還元剤が、窒素(N2)、アンモニア(NH3)、水素(H2)、アンモニア/窒素混合物、およびそれらの組合せから成る群から選択される試薬を含む、請求項1に記載の方法。
- 前記汚染された銅表面は約5秒から約15秒の範囲内の時間に亘って前記プラズマにさらされる、請求項3に記載の方法。
- 前記還元剤は水素ガスを含み、前記前処理プロセスは熱プロセスであり、前記基板は前記熱プロセスの間に約200℃から約400℃の範囲内の温度に加熱される、請求項1に記載の方法。
- 前記誘電障壁層を堆積させるステップに先行する後処理プロセスの間に前記コバルトキャッピング層を試薬およびプラズマにさらすステップをさらに含み、前記試薬が、窒素(N2)、アンモニア(NH3)、水素(H2)、アンモニア/窒素混合物、およびそれらの組合せから成る群から選択される、請求項1に記載の方法。
- 堆積−処理サイクルは、前記気相堆積プロセスを実行した後に前記後処理プロセスを実行するステップを含み、前記誘電表面を露出したままにしながら互いの上に複数のコバルトキャッピング層を堆積させるために2回、3回、または4回以上実行される、請求項6に記載の方法。
- 前記コバルトキャッピング層の各々は、前記堆積−処理サイクルの各々の間に約3Åから約5Åの範囲内の厚さに堆積される、請求項7に記載の方法。
- 前記コバルトキャッピング層は約4Åから約20Åの範囲内の厚さを有する、請求項1に記載の方法。
- 前記基板は前記気相堆積プロセスの間に前記コバルト前駆体ガスおよび水素ガスを含む堆積ガスにさらされ、前記気相堆積プロセスは熱化学気相堆積プロセスまたは原子層堆積プロセスである、請求項9に記載の方法。
- 前記コバルト前駆体ガスは、一般化学式(CO)xCoyLzを有するコバルト前駆体を含み、ここで、
Xは、1、2、3、4、5、6、7、8、9、10、11、または12であり、
Yは、1、2、3、4、または5であり、
Zは、1、2、3、4、5、6、7、または8であり、
Lは、シクロペンタジエニル、アルキルシクロペンタジエニル、メチルシクロペンタジエニル、ペンタメチルシクロペンタジエニル、ペンタジエニル、アルキルペンタジエニル、シクロブタジエニル、ブタジエニル、アリル、エチレン、プロピレン、アルケン、ジアルケン、アルキン、ニトロシル、アンモニア、それらの誘導体、およびそれらの組合せから成る群から単独で選択されるリガンドである、請求項1に記載の方法。 - 前記コバルト前駆体ガスは、トリカルボニルアリルコバルト、シクロペンタジエニルコバルトビス(カルボニル)、メチルシクロペンタジエニルコバルトビス(カルボニル)、エチルシクロペンタジエニルコバルトビス(カルボニル)、ペンタメチルシクロペンタジエニルコバルトビス(カルボニル)、ジコバルトオクタ(カルボニル)、ニトロシルコバルトトリス(カルボニル)、ビス(シクロペンタジエニル)コバルト、(シクロペンタジエニル)コバルト(シクロヘキサジエニル)、シクロペンタジエニルコバルト(1,3−ヘキサジエニル)、(シクロブタジエニル)コバルト(シクロペンタジエニル)、ビス(メチルシクロペンタジエニル)コバルト、(シクロペンタジエニル)コバルト(5−メチルシクロペンタジエニル)、ビス(エチレン)コバルト(ペンタメチルシクロペンタジエニル)、それらの誘導体、それらの錯体、それらのプラズマ、およびそれらの組合せから成る群から選択されるコバルト前駆体を含む、請求項1に記載の方法。
- 前記コバルト前駆体は、シクロペンタジエニルコバルトビス(カルボニル)を含む、請求項12に記載の方法。
- 基板上の銅表面をキャッピングするための方法であって、
汚染された銅表面および誘電表面を含む基板を処理チャンバー内に位置決めするステップと、
前処理プロセスの間に金属銅表面を形成している間に前記汚染された銅表面を還元剤にさらすステップと、
堆積−処理サイクルの間に前記誘電表面を露出したままにしながら前記金属銅表面を覆ってコバルトキャッピング材料を堆積させるステップであって、前記堆積−処理サイクルが、
気相堆積プロセスの間に前記誘電表面を露出したままにしながら前記金属銅表面を覆って第1のコバルト層を選択的に形成するために前記基板をコバルト前駆体ガスにさらすステップと、
処理プロセスの間に前記第1のコバルト層を窒素(N2)、アンモニア、アンモニア/窒素混合物、または水素を含むプラズマにさらすステップと、
前記気相堆積プロセスの間に前記誘電表面を露出したままにしながら前記第1のコバルト層上に第2のコバルト層を選択的に形成するために前記基板を前記コバルト前駆体ガスにさらすステップと、
前記処理プロセスの間に前記第2のコバルト層を前記プラズマにさらすステップと
を含むステップと、
前記コバルトキャッピング材料および前記誘電表面の上に誘電障壁層を堆積させるステップと
を含む方法。 - 前記気相堆積プロセスの間に前記誘電表面を露出したままにしながら前記第2のコバルト層上に第3のコバルト層を選択的に形成するために前記基板を前記コバルト前駆体ガスにさらすステップと、
前記処理プロセスの間に前記第3のコバルト層を前記プラズマにさらすステップと
をさらに含む、請求項14に記載の方法。
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US12/111,921 | 2008-04-29 | ||
US12/111,921 US20090269507A1 (en) | 2008-04-29 | 2008-04-29 | Selective cobalt deposition on copper surfaces |
PCT/US2009/042030 WO2009134840A2 (en) | 2008-04-29 | 2009-04-29 | Selective cobalt deposition on copper surfaces |
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JP2016166166A (ja) * | 2014-06-09 | 2016-09-15 | 東ソー株式会社 | コバルト錯体及びその製造方法、コバルト含有薄膜及びその作製方法 |
JP2016540368A (ja) * | 2013-09-27 | 2016-12-22 | アプライド マテリアルズ インコーポレイテッドApplied Materials,Incorporated | シームレスのコバルト間隙充填を可能にする方法 |
JP2017007975A (ja) * | 2015-06-22 | 2017-01-12 | 東ソー株式会社 | 置換シクロペンタジエニルコバルト錯体及びその製造方法、コバルト含有薄膜及びその作製方法 |
KR20170046733A (ko) * | 2014-08-27 | 2017-05-02 | 어플라이드 머티어리얼스, 인코포레이티드 | 알코올 선택적 환원 및 보호에 의한 선택적 증착 |
JP2017534173A (ja) * | 2014-10-15 | 2017-11-16 | アプライド マテリアルズ インコーポレイテッドApplied Materials,Incorporated | プラズマ損傷保護のための多層誘電体スタック |
JP2019535900A (ja) * | 2016-11-01 | 2019-12-12 | バーサム マテリアルズ ユーエス,リミティド ライアビリティ カンパニー | コバルト化合物、その製造方法及びその使用方法 |
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JP6146948B2 (ja) | 2017-06-14 |
KR101938841B1 (ko) | 2019-01-15 |
US20090269507A1 (en) | 2009-10-29 |
US11959167B2 (en) | 2024-04-16 |
CN102007573B (zh) | 2013-02-13 |
TWI441939B (zh) | 2014-06-21 |
US20220298625A1 (en) | 2022-09-22 |
KR20170091171A (ko) | 2017-08-08 |
KR101654001B1 (ko) | 2016-09-05 |
TW201447012A (zh) | 2014-12-16 |
KR20100137582A (ko) | 2010-12-30 |
TWI530580B (zh) | 2016-04-21 |
CN102007573A (zh) | 2011-04-06 |
WO2009134840A3 (en) | 2010-01-14 |
KR101802452B1 (ko) | 2017-11-28 |
TW201009107A (en) | 2010-03-01 |
KR101764163B1 (ko) | 2017-08-02 |
US20170321320A1 (en) | 2017-11-09 |
KR20160102574A (ko) | 2016-08-30 |
US20150325446A1 (en) | 2015-11-12 |
KR20170132901A (ko) | 2017-12-04 |
WO2009134840A2 (en) | 2009-11-05 |
US11384429B2 (en) | 2022-07-12 |
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