JP6971539B2 - フッ素含有量が少ないタングステン膜 - Google Patents
フッ素含有量が少ないタングステン膜 Download PDFInfo
- Publication number
- JP6971539B2 JP6971539B2 JP2016105216A JP2016105216A JP6971539B2 JP 6971539 B2 JP6971539 B2 JP 6971539B2 JP 2016105216 A JP2016105216 A JP 2016105216A JP 2016105216 A JP2016105216 A JP 2016105216A JP 6971539 B2 JP6971539 B2 JP 6971539B2
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- Prior art keywords
- tungsten
- fluorine
- containing film
- less
- chamber
- Prior art date
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- 229910052721 tungsten Inorganic materials 0.000 title claims description 173
- 239000010937 tungsten Substances 0.000 title claims description 173
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims description 172
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims description 82
- 229910052731 fluorine Inorganic materials 0.000 title claims description 82
- 239000011737 fluorine Substances 0.000 title claims description 82
- 238000000034 method Methods 0.000 claims description 145
- 230000008569 process Effects 0.000 claims description 85
- 238000000151 deposition Methods 0.000 claims description 78
- 239000002243 precursor Substances 0.000 claims description 61
- 239000000758 substrate Substances 0.000 claims description 54
- 230000008021 deposition Effects 0.000 claims description 47
- 239000003638 chemical reducing agent Substances 0.000 claims description 41
- 238000012545 processing Methods 0.000 claims description 33
- 238000005229 chemical vapour deposition Methods 0.000 claims description 28
- 239000012528 membrane Substances 0.000 claims description 27
- 239000007789 gas Substances 0.000 claims description 26
- 230000006911 nucleation Effects 0.000 claims description 19
- 238000010899 nucleation Methods 0.000 claims description 19
- 125000004429 atom Chemical group 0.000 claims description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- 230000004888 barrier function Effects 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 229910052732 germanium Inorganic materials 0.000 claims description 7
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 7
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 239000010410 layer Substances 0.000 description 95
- 238000000231 atomic layer deposition Methods 0.000 description 44
- 239000010408 film Substances 0.000 description 43
- 239000000463 material Substances 0.000 description 25
- 235000012431 wafers Nutrition 0.000 description 25
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 19
- 238000011049 filling Methods 0.000 description 17
- 238000004519 manufacturing process Methods 0.000 description 11
- 239000004065 semiconductor Substances 0.000 description 11
- 239000000376 reactant Substances 0.000 description 9
- 239000010936 titanium Substances 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 239000012159 carrier gas Substances 0.000 description 7
- 238000005137 deposition process Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000005530 etching Methods 0.000 description 6
- 238000005240 physical vapour deposition Methods 0.000 description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- -1 for example Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 4
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 150000002431 hydrogen Chemical class 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- NXHILIPIEUBEPD-UHFFFAOYSA-H tungsten hexafluoride Chemical compound F[W](F)(F)(F)(F)F NXHILIPIEUBEPD-UHFFFAOYSA-H 0.000 description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- OQPDWFJSZHWILH-UHFFFAOYSA-N [Al].[Al].[Al].[Ti] Chemical compound [Al].[Al].[Al].[Ti] OQPDWFJSZHWILH-UHFFFAOYSA-N 0.000 description 3
- IVHJCRXBQPGLOV-UHFFFAOYSA-N azanylidynetungsten Chemical compound [W]#N IVHJCRXBQPGLOV-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- 229910000077 silane Inorganic materials 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 3
- 230000002123 temporal effect Effects 0.000 description 3
- 229910021324 titanium aluminide Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910000085 borane Inorganic materials 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical group [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- DOYIBAKSKZZYPC-UHFFFAOYSA-N cyclopenta-1,3-diene;nickel(2+);prop-1-ene Chemical compound [Ni+2].[CH2-]C=C.C=1C=C[CH-]C=1 DOYIBAKSKZZYPC-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical group 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012625 in-situ measurement Methods 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 230000009467 reduction Effects 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
- MNWRORMXBIWXCI-UHFFFAOYSA-N tetrakis(dimethylamido)titanium Chemical compound CN(C)[Ti](N(C)C)(N(C)C)N(C)C MNWRORMXBIWXCI-UHFFFAOYSA-N 0.000 description 2
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- RLJUCKFARAQBDA-UHFFFAOYSA-N C(C)C1(C=CC=C1)[W](N=O)(=C=O)=C=O Chemical group C(C)C1(C=CC=C1)[W](N=O)(=C=O)=C=O RLJUCKFARAQBDA-UHFFFAOYSA-N 0.000 description 1
- JVCWKXBYGCJHDF-UHFFFAOYSA-N CC(C)(C)N=[W](N(C)C)(=NC(C)(C)C)N(C)C Chemical group CC(C)(C)N=[W](N(C)C)(=NC(C)(C)C)N(C)C JVCWKXBYGCJHDF-UHFFFAOYSA-N 0.000 description 1
- OAMOJYZDVHZSDW-UHFFFAOYSA-N CC1(C=CC=C1)[W](N=O)(=C=O)=C=O Chemical compound CC1(C=CC=C1)[W](N=O)(=C=O)=C=O OAMOJYZDVHZSDW-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910004529 TaF 5 Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical class O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- ZKIHCVGCBDREBT-UHFFFAOYSA-N [F].[W] Chemical compound [F].[W] ZKIHCVGCBDREBT-UHFFFAOYSA-N 0.000 description 1
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000003282 alkyl amino group Chemical group 0.000 description 1
- 125000005277 alkyl imino group Chemical group 0.000 description 1
- 229910052786 argon 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
- 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
- FQNHWXHRAUXLFU-UHFFFAOYSA-N carbon monoxide;tungsten Chemical group [W].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-] FQNHWXHRAUXLFU-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- ZOCHARZZJNPSEU-UHFFFAOYSA-N diboron Chemical compound B#B ZOCHARZZJNPSEU-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- VXGHASBVNMHGDI-UHFFFAOYSA-N digermane Chemical compound [Ge][Ge] VXGHASBVNMHGDI-UHFFFAOYSA-N 0.000 description 1
- VSLPMIMVDUOYFW-UHFFFAOYSA-N dimethylazanide;tantalum(5+) Chemical compound [Ta+5].C[N-]C.C[N-]C.C[N-]C.C[N-]C.C[N-]C VSLPMIMVDUOYFW-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- KQOQPFZBBFTURE-UHFFFAOYSA-N formaldehyde;tungsten Chemical compound [W].O=C KQOQPFZBBFTURE-UHFFFAOYSA-N 0.000 description 1
- 229910000078 germane Inorganic materials 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- PEUPIGGLJVUNEU-UHFFFAOYSA-N nickel silicon Chemical compound [Si].[Ni] PEUPIGGLJVUNEU-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000000399 optical microscopy Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000013515 script Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- YOUIDGQAIILFBW-UHFFFAOYSA-J tetrachlorotungsten Chemical class Cl[W](Cl)(Cl)Cl YOUIDGQAIILFBW-UHFFFAOYSA-J 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 150000003657 tungsten Chemical class 0.000 description 1
- KPGXUAIFQMJJFB-UHFFFAOYSA-H tungsten hexachloride Chemical compound Cl[W](Cl)(Cl)(Cl)(Cl)Cl KPGXUAIFQMJJFB-UHFFFAOYSA-H 0.000 description 1
- WIDQNNDDTXUPAN-UHFFFAOYSA-I tungsten(v) chloride Chemical compound Cl[W](Cl)(Cl)(Cl)Cl WIDQNNDDTXUPAN-UHFFFAOYSA-I 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28556—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by chemical means, e.g. CVD, LPCVD, PECVD, laser CVD
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76841—Barrier, adhesion or liner layers
- H01L21/76871—Layers specifically deposited to enhance or enable the nucleation of further layers, i.e. seed layers
- H01L21/76876—Layers specifically deposited to enhance or enable the nucleation of further layers, i.e. seed layers for deposition from the gas phase, e.g. CVD
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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
- C23C16/0272—Deposition of sub-layers, e.g. to promote the adhesion of the main coating
- C23C16/0281—Deposition of sub-layers, e.g. to promote the adhesion of the main coating of metallic sub-layers
-
- 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
- C23C16/04—Coating on selected surface areas, e.g. using masks
- C23C16/045—Coating cavities or hollow spaces, e.g. interior of tubes; Infiltration of porous substrates
-
- 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
- C23C16/08—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 halides
- C23C16/14—Deposition of only one other metal element
-
- 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
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Description
装置
[適用例1]
方法であって、
フッ素含有タングステン前駆体と還元剤との交互のパルスに基板を曝露し、これによってタングステン含有膜を前記基板に堆積させることを含み、
前記フッ素含有タングステン前駆体がパルスを発生させている間、前記基板を収容しているチャンバのチャンバ圧力は10トル未満であり、前記タングステン含有膜中のフッ素濃度は、10 19 原子/cm 3 未満である、方法。
[適用例2]
前記チャンバ圧力は7トル未満である、適用例1に記載の方法。
[適用例3]
前記チャンバ圧力は5トル未満である、適用例1に記載の方法。
[適用例4]
前記タングステン含有膜はタングステン核形成層である、適用例1に記載の方法。
[適用例5]
前記タングステン含有膜は、フッ素を含まないプロセスを介して堆積された第1のタングステン含有膜上に堆積される、適用例1〜4のいずれか一項に記載の方法。
[適用例6]
前記タングステン含有膜は、バリア層上に堆積される、適用例1〜4のいずれか一項に記載の方法。
[適用例7]
前記還元剤は、シリコン含有還元剤、ホウ素含有還元剤、およびゲルマニウム含有還元剤から選択される、適用例1〜4のいずれか一項に記載の方法。
[適用例8]
前記フッ素含有タングステン前駆体のパルスは、水素(H 2 )を含んでいる、適用例1〜4のいずれか一項に記載の方法。
[適用例9]
前記タングステン含有膜の抵抗率は130μΩ/cm未満である、適用例1〜4のいずれか一項に記載の方法。
[適用例10]
前記タングステン含有膜の抵抗率は110μΩ/cm未満である、適用例1〜4のいずれか一項に記載の方法。
[適用例11]
前記タングステン含有膜上への化学気相堆積(CVD)によってタングステンバルク層を堆積させることをさらに含む、適用例1〜4のいずれか一項に記載の方法。
[適用例12]
前記タングステン含有膜中のフッ素濃度は10 18 原子/cm 3 未満である、適用例1〜4のいずれか一項に記載の方法。
[適用例13]
方法であって、
フッ素を含まないプロセスによって第1のタングステン含有膜を基板上に堆積させることと、
フッ素含有前駆体を用いる原子層の堆積によって第2のタングステン含有膜を第1のタングステン含有膜に堆積させることと
を含み、
前記第2のタングステン含有膜の堆積中に前記基板を収容しているチャンバのチャンバ圧力が10トル未満である、方法。
[適用例14]
前記第1のタングステン含有膜は、バリア層上に堆積される、適用例13に記載の方法。
[適用例15]
前記第1のタングステン含有膜は、酸化シリコン上に堆積される、適用例13に記載の方法。
[適用例16]
前記チャンバ圧力は7トル未満である、適用例13または14に記載の方法。
[適用例17]
前記チャンバ圧力は5トル未満である、適用例13または14に記載の方法。
[適用例18]
前記第2のタングステン含有膜中のフッ素濃度は、10 19 原子/cm 3 未満である、適用例13または14に記載の方法。
[適用例19]
前記第2のタングステン含有膜中のフッ素濃度は、10 18 原子/cm 3 未満である、適用例13または14に記載の方法。
[適用例20]
基板を処理する装置であって、
(a)基板を保持するように構成された基台を備える少なくとも1つの処理チャンバと、
(b)真空空間に連結させるための少なくとも1つの出口と、
(c)1つ以上の処理ガス供給源に連結している1つ以上の処理ガス入口と、
(d)前記装置内の動作を制御するためのコントローラであって、還元剤およびフッ素含有タングステン前駆体を交互にパルスした状態で前記処理チャンバに導入するための機械可読命令を含む、コントローラと、を備え、
前記チャンバの圧力は10トル未満である、装置。
Claims (16)
- 方法であって、
フッ素含有タングステン前駆体と還元剤との交互のパルスに基板を曝露し、これによってタングステン含有膜を前記基板に堆積させることを含み、
前記フッ素含有タングステン前駆体がパルスを発生させている間、前記基板を収容しているチャンバのチャンバ圧力は5トル未満であり、前記タングステン含有膜中のフッ素濃度は、1018原子/cm3未満である、方法。 - 前記チャンバ圧力は3トル未満である、請求項1に記載の方法。
- 前記タングステン含有膜はタングステン核形成層である、請求項1に記載の方法。
- 前記タングステン含有膜は、フッ素を含まないプロセスを介して堆積された第1のタングステン含有膜上に堆積される、請求項1〜3のいずれか一項に記載の方法。
- 前記タングステン含有膜は、バリア層上に堆積される、請求項1〜3のいずれか一項に記載の方法。
- 前記還元剤は、シリコン含有還元剤、ホウ素含有還元剤、およびゲルマニウム含有還元剤から選択される、請求項1〜3のいずれか一項に記載の方法。
- 前記フッ素含有タングステン前駆体のパルスは、水素(H2)を含んでいる、請求項1〜3のいずれか一項に記載の方法。
- 前記タングステン含有膜の抵抗率は130μΩ/cm未満である、請求項1〜3のいずれか一項に記載の方法。
- 前記タングステン含有膜の抵抗率は110μΩ/cm未満である、請求項1〜3のいずれか一項に記載の方法。
- 前記タングステン含有膜上への化学気相堆積(CVD)によってタングステンバルク層を堆積させることをさらに含む、請求項1〜3のいずれか一項に記載の方法。
- 方法であって、
フッ素を含まないプロセスによって第1のタングステン含有膜を基板上に堆積させることと、
フッ素含有前駆体を用いる原子層の堆積によって第2のタングステン含有膜を前記第1のタングステン含有膜に堆積させることと
を含み、
前記第2のタングステン含有膜の堆積中に前記基板を収容しているチャンバのチャンバ圧力が5トル未満であり、前記第2のタングステン含有膜中のフッ素濃度は、1018原子/cm3未満である、方法。 - 前記第1のタングステン含有膜は、バリア層上に堆積される、請求項11に記載の方法。
- 前記第1のタングステン含有膜は、酸化シリコン上に堆積される、請求項11に記載の方法。
- 前記チャンバ圧力は3トル未満である、請求項11または12に記載の方法。
- 前記第2のタングステン含有膜中のフッ素濃度のプロフィールは、前記フッ素濃度が1018原子/cm3未満である第1のプロフィール部分を有することを特徴とし、前記第1のプロフィール部分は、前記第2のタングステン含有膜の厚みの大半を示す、請求項11または12に記載の方法。
- 基板を処理する装置であって、
(a)基板を保持するように構成された基台を備える少なくとも1つの処理チャンバと、
(b)真空空間に連結させるための少なくとも1つの出口と、
(c)1つ以上の処理ガス供給源に連結している1つ以上の処理ガス入口と、
(d)前記装置内の動作を制御するためのコントローラであって、還元剤およびフッ素含有タングステン前駆体を交互にパルスした状態で前記処理チャンバに導入して1018原子/cm3未満の合計フッ素濃度を有するタングステン含有膜を堆積するための機械可読命令を含む、コントローラと、を備え、
前記チャンバの圧力は5トル未満である、装置。
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US14/723,275 US9754824B2 (en) | 2015-05-27 | 2015-05-27 | Tungsten films having low fluorine content |
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