JP2011040741A - 化学気相成長用組成物 - Google Patents
化学気相成長用組成物 Download PDFInfo
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- JP2011040741A JP2011040741A JP2010174006A JP2010174006A JP2011040741A JP 2011040741 A JP2011040741 A JP 2011040741A JP 2010174006 A JP2010174006 A JP 2010174006A JP 2010174006 A JP2010174006 A JP 2010174006A JP 2011040741 A JP2011040741 A JP 2011040741A
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- precursor
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- film
- ammonia
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- 238000005229 chemical vapour deposition Methods 0.000 title claims abstract description 29
- 239000000203 mixture Substances 0.000 title claims abstract description 7
- 239000002243 precursor Substances 0.000 claims abstract description 88
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 64
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000010703 silicon Substances 0.000 claims abstract description 60
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 41
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 88
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 86
- 229910052757 nitrogen Inorganic materials 0.000 claims description 47
- 229910021529 ammonia Inorganic materials 0.000 claims description 42
- 125000004122 cyclic group Chemical group 0.000 claims description 30
- 125000000623 heterocyclic group Chemical group 0.000 claims description 18
- 125000003118 aryl group Chemical group 0.000 claims description 15
- 229920006395 saturated elastomer Polymers 0.000 claims description 15
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 claims description 15
- 125000000217 alkyl group Chemical group 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 13
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 9
- 125000001424 substituent group Chemical group 0.000 claims description 8
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 7
- 229910000077 silane Inorganic materials 0.000 claims description 7
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 6
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 132
- 238000000151 deposition Methods 0.000 description 64
- 230000008021 deposition Effects 0.000 description 60
- WZUCGJVWOLJJAN-UHFFFAOYSA-N diethylaminosilicon Chemical compound CCN([Si])CC WZUCGJVWOLJJAN-UHFFFAOYSA-N 0.000 description 48
- 230000015572 biosynthetic process Effects 0.000 description 40
- 150000001875 compounds Chemical class 0.000 description 33
- 229910052581 Si3N4 Inorganic materials 0.000 description 28
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 28
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 28
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 24
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 24
- 239000007789 gas Substances 0.000 description 22
- 239000000376 reactant Substances 0.000 description 20
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 18
- 239000007788 liquid Substances 0.000 description 18
- 0 [*+][n]1cccc1 Chemical compound [*+][n]1cccc1 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 16
- VYIRVGYSUZPNLF-UHFFFAOYSA-N n-(tert-butylamino)silyl-2-methylpropan-2-amine Chemical compound CC(C)(C)N[SiH2]NC(C)(C)C VYIRVGYSUZPNLF-UHFFFAOYSA-N 0.000 description 16
- 238000004821 distillation Methods 0.000 description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- 238000003786 synthesis reaction Methods 0.000 description 14
- 235000012431 wafers Nutrition 0.000 description 14
- 238000005137 deposition process Methods 0.000 description 12
- 239000012528 membrane Substances 0.000 description 12
- BIVNKSDKIFWKFA-UHFFFAOYSA-N N-propan-2-yl-N-silylpropan-2-amine Chemical compound CC(C)N([SiH3])C(C)C BIVNKSDKIFWKFA-UHFFFAOYSA-N 0.000 description 10
- 150000001412 amines Chemical class 0.000 description 10
- 239000006227 byproduct Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000004065 semiconductor Substances 0.000 description 10
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 8
- JONMXZBHLFHDKT-UHFFFAOYSA-N N,N-disilylcyclohexanamine Chemical compound [SiH3]N([SiH3])C1CCCCC1 JONMXZBHLFHDKT-UHFFFAOYSA-N 0.000 description 8
- 238000000231 atomic layer deposition Methods 0.000 description 8
- 238000009835 boiling Methods 0.000 description 8
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 8
- 235000012239 silicon dioxide Nutrition 0.000 description 8
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 6
- 229910018540 Si C Inorganic materials 0.000 description 6
- 229910007991 Si-N Inorganic materials 0.000 description 6
- 229910006294 Si—N Inorganic materials 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 6
- 229910052801 chlorine Inorganic materials 0.000 description 6
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 6
- 238000010790 dilution Methods 0.000 description 6
- 239000012895 dilution Substances 0.000 description 6
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 6
- 125000004433 nitrogen atom Chemical group N* 0.000 description 6
- PARWUHTVGZSQPD-UHFFFAOYSA-N phenylsilane Chemical compound [SiH3]C1=CC=CC=C1 PARWUHTVGZSQPD-UHFFFAOYSA-N 0.000 description 6
- 229910010271 silicon carbide Inorganic materials 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- REJKHFAZHZLNOP-UHFFFAOYSA-N (tert-butylamino)silicon Chemical compound CC(C)(C)N[Si] REJKHFAZHZLNOP-UHFFFAOYSA-N 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 235000019270 ammonium chloride Nutrition 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 4
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 4
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000003989 dielectric material Substances 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 239000001307 helium Substances 0.000 description 4
- 229910052734 helium Inorganic materials 0.000 description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 4
- 238000002329 infrared spectrum Methods 0.000 description 4
- 150000001282 organosilanes Chemical class 0.000 description 4
- 230000037361 pathway Effects 0.000 description 4
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 4
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 238000005891 transamination reaction Methods 0.000 description 4
- DIIIISSCIXVANO-UHFFFAOYSA-N 1,2-Dimethylhydrazine Chemical compound CNNC DIIIISSCIXVANO-UHFFFAOYSA-N 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 2
- RYNJDBJNKUPMPH-UHFFFAOYSA-N CC(C)(C)N([SiH3])[SiH2]N([SiH3])C(C)(C)C Chemical compound CC(C)(C)N([SiH3])[SiH2]N([SiH3])C(C)(C)C RYNJDBJNKUPMPH-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- FPQJYZRZOUANLL-UHFFFAOYSA-N N,N-disilylpropan-2-amine Chemical compound CC(C)N([SiH3])[SiH3] FPQJYZRZOUANLL-UHFFFAOYSA-N 0.000 description 2
- ZZHXBZOWQPNBCA-UHFFFAOYSA-N N-(propan-2-ylamino)silylpropan-2-amine Chemical compound CC(C)N[SiH2]NC(C)C ZZHXBZOWQPNBCA-UHFFFAOYSA-N 0.000 description 2
- KFFDXHFTFPJYGR-UHFFFAOYSA-N N-[cyclohexyl(silyl)amino]silyl-N-silylcyclohexanamine Chemical compound C1CCCCC1N([SiH3])[SiH2]N([SiH3])C1CCCCC1 KFFDXHFTFPJYGR-UHFFFAOYSA-N 0.000 description 2
- 229910003818 SiH2Cl2 Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 150000003973 alkyl amines Chemical class 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- PHUNDLUSWHZQPF-UHFFFAOYSA-N bis(tert-butylamino)silicon Chemical compound CC(C)(C)N[Si]NC(C)(C)C PHUNDLUSWHZQPF-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 125000005265 dialkylamine group Chemical group 0.000 description 2
- KSFBTBXTZDJOHO-UHFFFAOYSA-N diaminosilicon Chemical compound N[Si]N KSFBTBXTZDJOHO-UHFFFAOYSA-N 0.000 description 2
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 2
- UCXUKTLCVSGCNR-UHFFFAOYSA-N diethylsilane Chemical compound CC[SiH2]CC UCXUKTLCVSGCNR-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- UAOMVDZJSHZZME-UHFFFAOYSA-N diisopropylamine Chemical compound CC(C)NC(C)C UAOMVDZJSHZZME-UHFFFAOYSA-N 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- IDIOJRGTRFRIJL-UHFFFAOYSA-N iodosilane Chemical compound I[SiH3] IDIOJRGTRFRIJL-UHFFFAOYSA-N 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- HCZCGHSBNHRSLG-UHFFFAOYSA-N n,n-disilylmethanamine Chemical compound CN([SiH3])[SiH3] HCZCGHSBNHRSLG-UHFFFAOYSA-N 0.000 description 2
- OWKFQWAGPHVFRF-UHFFFAOYSA-N n-(diethylaminosilyl)-n-ethylethanamine Chemical compound CCN(CC)[SiH2]N(CC)CC OWKFQWAGPHVFRF-UHFFFAOYSA-N 0.000 description 2
- TWVSWDVJBJKDAA-UHFFFAOYSA-N n-[bis(dimethylamino)silyl]-n-methylmethanamine Chemical compound CN(C)[SiH](N(C)C)N(C)C TWVSWDVJBJKDAA-UHFFFAOYSA-N 0.000 description 2
- FFXRCCZYEXDGRJ-UHFFFAOYSA-N n-bis(propan-2-ylamino)silylpropan-2-amine Chemical compound CC(C)N[SiH](NC(C)C)NC(C)C FFXRCCZYEXDGRJ-UHFFFAOYSA-N 0.000 description 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 125000000962 organic group Chemical group 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 150000004756 silanes Chemical class 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- NBGFPUNMQOIQRM-UHFFFAOYSA-N CCC(C)N(C(C)CC)S(O)=C Chemical compound CCC(C)N(C(C)CC)S(O)=C NBGFPUNMQOIQRM-UHFFFAOYSA-N 0.000 description 1
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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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02205—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition
- H01L21/02208—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si
- H01L21/02211—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound being a silane, e.g. disilane, methylsilane or chlorosilane
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/025—Silicon compounds without C-silicon linkages
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
-
- 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
- C23C16/36—Carbonitrides
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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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/02167—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material being a silicon carbide not containing oxygen, e.g. SiC, SiC:H or silicon carbonitrides
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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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02205—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition
- H01L21/02208—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si
- H01L21/02219—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound comprising silicon and nitrogen
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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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02205—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition
- H01L21/02208—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si
- H01L21/02219—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound comprising silicon and nitrogen
- H01L21/02222—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound comprising silicon and nitrogen the compound being a silazane
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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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
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- H—ELECTRICITY
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Abstract
Description
Rは、直鎖、分枝若しくは環状の飽和若しくは不飽和C1〜C10アルキル基、芳香族、複素環、又は式Cにおいてシリルから選択され、
R1は、直鎖、分枝又は環状の飽和又は不飽和のC2〜C10アルキル基、芳香族、複素環、水素、シリル基から選択され、置換基を有していても又は有していなくてもよく、
式AにおいてRとR1を結合して環状基(CH2)n(式中、nは1〜6、好ましくは4及び5である)にすることも可能であり、かつ
R2は、単結合、(CH2)n鎖、環、SiR2又はSiH2を表す)。
プラズマ堆積の問題を招くことなく、低い熱条件において誘電膜の形成を促進できること;
Si−C結合のSi−N結合に対する比を制御すること、及びそれにより得られる膜の特性を制御することを可能にするために、種々の化学量論量において、アミノシランを、他の前駆体、例えばアンモニアと混合できること;
高い屈折率及び膜応力を有する膜を生成できること;
低い酸エッチ速度を有する膜を生成できること;
高密度の膜を生成できること;
塩素汚染を避けながら、膜を生成できること;
製造可能なバッチ炉(100個以上のウェハ)において、低い圧力(20mTorr〜2Torr)で操作できること;並びに
低温、例えば550℃以下の低い温度で、SixCyNz膜を生成できること。
[ジエチルアミノシランの合成]
トリフルオロメタンスルホン酸50g(0.33mol)とトルエン100mlを、250mlのフラスコに添加した。窒素の保護下でフラスコを−40℃に冷却した。トリルシラン40.6g(0.33mol)をゆっくりと添加した。次いで、フラスコを−60℃に冷却した。トリエチルアミン33.5gをゆっくりと添加し、次いでジエチルアミン24gを添加した。添加後、フラスコの温度を室温まで徐々に温めた。2つの液層が形成された。分液漏斗を用いて上層を分離した。減圧蒸留により、ジエチルアミノシラン25gを得た。ジエチルアミノシランの沸点は、210mmHgにおいて40〜42℃であった。
[ジ−イソ−プロピルアミノシランの合成]
トリフルオロメタンスルホン酸50g(0.33mol)とペンタン80mlを、250mlのフラスコに添加した。窒素の保護下でフラスコを−40℃に冷却した。フェニルシラン35.6g(0.33mol)をゆっくりと添加した。次いで、フラスコを−60℃に冷却した。トリエチルアミン33.3g(0.33mol)をゆっくりと添加し、次いでペンタン15ml中ジ−イソ−プロピルアミン33.3g(0.33mol)の溶液を添加した。添加後、フラスコの温度を室温まで徐々に温めた。2つの液層が形成された。分液漏斗を用いて上層を分離した。蒸留により、溶媒と副生成物のベンゼンを除去した。減圧蒸留によりジ−イソ−プロピルアミノシラン30gを得た。ジ−イソ−プロピルアミノシランの沸点は、106mmHgにおいて55℃であった。
[シクロヘキシルジシリルアミン及び2,4−ジシクロヘキシル−2,4−ジアザ−1,3,5−トリシラペンタンの合成]
トリフルオロメタンスルホン酸62.5gとペンタン100mlを、500mlのフラスコに添加した。窒素の保護下でフラスコを−40℃に冷却した。フェニルシラン45gをゆっくりと添加した。次いで、フラスコを−60℃に冷却した。トリエチルアミン42gをゆっくりと添加し、次いでペンタン15ml中のシクロヘキシルアミン20.6gの溶液を添加した。添加後、フラスコの温度を室温まで徐々に温めた。2つの液層が形成された。分液漏斗を用いて上層を分離した。蒸留により溶媒と副生成物のベンゼンを除去した。減圧蒸留により、シクロヘキシルジシリルアミン15gを得た。シクロヘキシルジシリルアミンの沸点は、17mmHgにおいて54〜55℃であった。残りの高沸点部分は、96.6%の2,4−ジシクロヘキシル−2,4−ジアザ−1,3,5−トリシラペンタンを含有している。
[シクロヘキシルジシリルアミン及び2,4−ジ−tert−ブチル−2,4−ジアザ−1,3,5−トリシラペンタンの合成]
トリフルオロメタンスルホン酸50.0g(0.33mol)とペンタン100mlを、500mlのフラスコに添加した。窒素の保護下でフラスコを−40℃に冷却した。フェニルシラン35.6g(0.33mol)をゆっくりと添加した。次いで、フラスコを−60℃に冷却した。トリエチルアミン33.3gをゆっくりと添加し、次いでペンタン15ml中ビス−t−ブチルアミノシラン28.7g(0.165mol)の溶液を添加した。添加後、フラスコの温度を室温まで徐々に温めた。2つの液層が形成された。分液漏斗を用いて上層を分離した。蒸留により、溶媒と副生成物のベンゼンを除去した。減圧蒸留により、2,4−ジ−tert−ブチル−2,4−ジアザ−1,3,5−トリシラペンタン21gを得た。
[ジエチルアミノシラン前駆体を用いた炭窒化ケイ素膜の形成]
[一般的手順]
炭窒化ケイ素堆積物のための実験用前駆体を資格認定するのに用いられるLPCVD反応器においてアミノシラン前駆体を試験する。前駆体を脱ガスし、必要に応じて低圧マスフローコントローラ(MFC)を通じて反応器に計量供給する。化学物質の質量損失対流れ時間に対してMFC流量を較正する。明記されている場合には、アンモニアなどの追加の反応体、並びに窒素及びヘリウムなどの希釈剤も同様に、必要に応じて、較正されたMFCを通じて反応器に計量供給する。反応器を10−4Torr(0.013Pa)未満に排気することができるルーツブロワー/ドライポンプの組み合わせに連結する。堆積中においては、シリコンウェハの装填物を横切る温度は設定点の1℃以内にする。
[NH3なしでN2を用いたジエチルアミノシラン前駆体による炭窒化ケイ素膜の形成]
プロセス条件を除いて例4の手順に従った。NH3の代わりに窒素を用いた。本例においては、ジエチルアミノシラン(DEAS)10sccmを、N240sccmとともに、1.0Torr(133Pa)で以って、40分の堆積時間にわたり600℃で、反応器に流した。
[NH3なしでN2を用いたジイソプロピルアミノシラン前駆体による炭窒化ケイ素膜の形成]
前駆体を除いて例5の手順に従った。ジイソプロピルアミノシラン(DIPAS)10sccmを、He20sccm及びN220sccmとともに、1.0Torr(133Pa)で以って、70分の堆積時間にわたり570℃で反応器に流した。
[NH3なしでN2を用いた対照標準としてのビス(三級ブチルアミノ)シラン前駆体による炭窒化ケイ素膜の形成]
前駆体を除いて例5の手順に従い、それを対照標準として用いた。BTBASは生成プロセスにおいて世界中で用いられている前駆体であり、性能特性が十分に一般に認められているので、代表的な比較用アミノシランとして選択した。
[窒化ケイ素及び炭窒化ケイ素膜のエッチ抵抗性]
本例においては、種々の窒化ケイ素及び炭窒化ケイ素膜のエッチング結果が、表1に示される。表1は、1%の(49%)HFにおける幾つかの前駆体からの膜のエッチング結果を示している。エッチ速度は、同時にエッチングされた熱成長二酸化ケイ素のエッチ速度に対して与えられている。膜のエッチ速度が低いほど、望ましくない二酸化ケイ素を除去するときに、幾何学的形状を維持し及び下地の層を保護するのに良好である。
Rは、直鎖、分枝若しくは環状の飽和若しくは不飽和C1〜C10アルキル基、芳香族、複素環、又は式Cにおいてシリルから選択され、
R1は、直鎖、分枝又は環状の飽和又は不飽和のC2〜C10アルキル基、芳香族、複素環、水素、シリル基から選択され、置換基を有していても又は有していなくてもよく、
式AにおいてRとR1を結合して環状基(CH2)n(式中、nは2〜6、好ましくは4及び5である)にすることも可能であり、かつ
R2は、単結合、(CH2) m 鎖、環、SiR2又はSiH2を表す)。
Rは、直鎖、分枝若しくは環状の飽和若しくは不飽和C1〜C10アルキル基、芳香族、複素環、又は式Cにおいてシリルから選択され、
R1は、直鎖、分枝又は環状の飽和又は不飽和のC2〜C10アルキル基、芳香族、複素環、水素、シリル基から選択され、置換基を有していても又は有していなくてもよく、
式AにおいてRとR1を結合して環状基(CH2)n(式中、nは2〜6、好ましくは4及び5である)にすることも可能であり、かつ
R2は、単結合、(CH2) m 鎖、環、SiR2又はSiH2を表す)。
プラズマ堆積の問題を招くことなく、低い熱条件において誘電膜の形成を促進できること;
Si−C結合のSi−N結合に対する比を制御すること、及びそれにより得られる膜の特性を制御することを可能にするために、種々の化学量論量において、アミノシランを、他の前駆体、例えばアンモニアと混合できること;
高い屈折率及び膜応力を有する膜を生成できること;
低い酸エッチ速度を有する膜を生成できること;
高密度の膜を生成できること;
塩素汚染を避けながら、膜を生成できること;
製造可能なバッチ炉(100個以上のウェハ)において、低い圧力(20mTorr〜2Torr)で操作できること;並びに
低温、例えば550℃以下の低い温度で、SixCyNz膜を生成できること。
[ジエチルアミノシランの合成]
トリフルオロメタンスルホン酸50g(0.33mol)とトルエン100mlを、250mlのフラスコに添加した。窒素の保護下でフラスコを−40℃に冷却した。トリルシラン40.6g(0.33mol)をゆっくりと添加した。次いで、フラスコを−60℃に冷却した。トリエチルアミン33.5gをゆっくりと添加し、次いでジエチルアミン24gを添加した。添加後、フラスコの温度を室温まで徐々に温めた。2つの液層が形成された。分液漏斗を用いて上層を分離した。減圧蒸留により、ジエチルアミノシラン25gを得た。ジエチルアミノシランの沸点は、210mmHgにおいて40〜42℃であった。
[ジ−イソ−プロピルアミノシランの合成]
トリフルオロメタンスルホン酸50g(0.33mol)とペンタン80mlを、250mlのフラスコに添加した。窒素の保護下でフラスコを−40℃に冷却した。フェニルシラン35.6g(0.33mol)をゆっくりと添加した。次いで、フラスコを−60℃に冷却した。トリエチルアミン33.3g(0.33mol)をゆっくりと添加し、次いでペンタン15ml中ジ−イソ−プロピルアミン33.3g(0.33mol)の溶液を添加した。添加後、フラスコの温度を室温まで徐々に温めた。2つの液層が形成された。分液漏斗を用いて上層を分離した。蒸留により、溶媒と副生成物のベンゼンを除去した。減圧蒸留によりジ−イソ−プロピルアミノシラン30gを得た。ジ−イソ−プロピルアミノシランの沸点は、106mmHgにおいて55℃であった。
[シクロヘキシルジシリルアミン及び2,4−ジシクロヘキシル−2,4−ジアザ−1,3,5−トリシラペンタンの合成]
トリフルオロメタンスルホン酸62.5gとペンタン100mlを、500mlのフラスコに添加した。窒素の保護下でフラスコを−40℃に冷却した。フェニルシラン45gをゆっくりと添加した。次いで、フラスコを−60℃に冷却した。トリエチルアミン42gをゆっくりと添加し、次いでペンタン15ml中のシクロヘキシルアミン20.6gの溶液を添加した。添加後、フラスコの温度を室温まで徐々に温めた。2つの液層が形成された。分液漏斗を用いて上層を分離した。蒸留により溶媒と副生成物のベンゼンを除去した。減圧蒸留により、シクロヘキシルジシリルアミン15gを得た。シクロヘキシルジシリルアミンの沸点は、17mmHgにおいて54〜55℃であった。残りの高沸点部分は、96.6%の2,4−ジシクロヘキシル−2,4−ジアザ−1,3,5−トリシラペンタンを含有している。
[シクロヘキシルジシリルアミン及び2,4−ジ−tert−ブチル−2,4−ジアザ−1,3,5−トリシラペンタンの合成]
トリフルオロメタンスルホン酸50.0g(0.33mol)とペンタン100mlを、500mlのフラスコに添加した。窒素の保護下でフラスコを−40℃に冷却した。フェニルシラン35.6g(0.33mol)をゆっくりと添加した。次いで、フラスコを−60℃に冷却した。トリエチルアミン33.3gをゆっくりと添加し、次いでペンタン15ml中ビス−t−ブチルアミノシラン28.7g(0.165mol)の溶液を添加した。添加後、フラスコの温度を室温まで徐々に温めた。2つの液層が形成された。分液漏斗を用いて上層を分離した。蒸留により、溶媒と副生成物のベンゼンを除去した。減圧蒸留により、2,4−ジ−tert−ブチル−2,4−ジアザ−1,3,5−トリシラペンタン21gを得た。
[ジエチルアミノシラン前駆体を用いた炭窒化ケイ素膜の形成]
[一般的手順]
炭窒化ケイ素堆積物のための実験用前駆体を資格認定するのに用いられるLPCVD反応器においてアミノシラン前駆体を試験する。前駆体を脱ガスし、必要に応じて低圧マスフローコントローラ(MFC)を通じて反応器に計量供給する。化学物質の質量損失対流れ時間に対してMFC流量を較正する。明記されている場合には、アンモニアなどの追加の反応体、並びに窒素及びヘリウムなどの希釈剤も同様に、必要に応じて、較正されたMFCを通じて反応器に計量供給する。反応器を10−4Torr(0.013Pa)未満に排気することができるルーツブロワー/ドライポンプの組み合わせに連結する。堆積中においては、シリコンウェハの装填物を横切る温度は設定点の1℃以内にする。
[NH3なしでN2を用いたジエチルアミノシラン前駆体による炭窒化ケイ素膜の形成]
プロセス条件を除いて例4の手順に従った。NH3の代わりに窒素を用いた。本例においては、ジエチルアミノシラン(DEAS)10sccmを、N240sccmとともに、1.0Torr(133Pa)で以って、40分の堆積時間にわたり600℃で、反応器に流した。
[NH3なしでN2を用いたジイソプロピルアミノシラン前駆体による炭窒化ケイ素膜の形成]
前駆体を除いて例5の手順に従った。ジイソプロピルアミノシラン(DIPAS)10sccmを、He20sccm及びN220sccmとともに、1.0Torr(133Pa)で以って、70分の堆積時間にわたり570℃で反応器に流した。
[NH3なしでN2を用いた対照標準としてのビス(三級ブチルアミノ)シラン前駆体による炭窒化ケイ素膜の形成]
前駆体を除いて例5の手順に従い、それを対照標準として用いた。BTBASは生成プロセスにおいて世界中で用いられている前駆体であり、性能特性が十分に一般に認められているので、代表的な比較用アミノシランとして選択した。
[窒化ケイ素及び炭窒化ケイ素膜のエッチ抵抗性]
本例においては、種々の窒化ケイ素及び炭窒化ケイ素膜のエッチング結果が、表1に示される。表1は、1%の(49%)HFにおける幾つかの前駆体からの膜のエッチング結果を示している。エッチ速度は、同時にエッチングされた熱成長二酸化ケイ素のエッチ速度に対して与えられている。膜のエッチ速度が低いほど、望ましくない二酸化ケイ素を除去するときに、幾何学的形状を維持し及び下地の層を保護するのに良好である。
Claims (18)
- 以下の式によって表されるアミノシラン及びそれらの混合物からなる群より選択される前駆体を用いることを含む、炭窒化ケイ素膜形成用前駆体の化学気相成長により基材上に炭窒化ケイ素膜を形成するための方法:
- 前記前駆体が式Aによって表され、R及びR1のそれぞれが少なくとも2個の炭素原子を有する、請求項1に記載の方法。
- R及びR1が2〜4個の炭素を有するアルキル基である、請求項2に記載の方法。
- R及びR1が環状である、請求項2に記載の方法。
- RとR1が(CH2)n(式中、nは4又は5)の形態の環に結合される、請求項4に記載の方法。
- R及びR1がエチル又はイソプロピルである、請求項2に記載の方法。
- アンモニア、窒素及びヒドラジンからなる群より選択された窒素源が用いられる、請求項1に記載の方法。
- 化学気相成長の際の前記基材の温度が約500〜700℃の範囲にある、請求項7に記載の方法。
- 化学気相成長の際の圧力が約20mTorr〜20Torrの範囲にある、請求項8に記載の方法。
- 前記窒素源がアンモニア又は窒素であり、前記窒素源が0.1〜4:1の窒素源:前駆体の範囲において存在する、請求項7に記載の方法。
- アンモニア又は窒素からなる群より選択される窒素源が前駆体として含まれ、前記窒素源が0.1〜4:1の窒素源:前駆体の範囲において存在する、請求項12に記載の方法。
- R及びR1がエチル又はイソプロピルである、請求項15に記載の方法。
- アンモニア又は窒素からなる群より選択される窒素源が、0.1〜4:1の窒素源:シラン前駆体比において用いられる、請求項16に記載の方法。
- 基材の温度が500〜700℃の範囲で維持され、圧力が20mTorr〜20Torrである、請求項17に記載の方法。
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JP2014523638A (ja) * | 2011-06-03 | 2014-09-11 | エア プロダクツ アンド ケミカルズ インコーポレイテッド | 炭素ドープケイ素含有膜を堆積するための組成物及び方法 |
JP2014027285A (ja) * | 2012-07-30 | 2014-02-06 | Air Products And Chemicals Inc | 酸素不含ケイ素系膜及びその形成方法 |
US9243324B2 (en) | 2012-07-30 | 2016-01-26 | Air Products And Chemicals, Inc. | Methods of forming non-oxygen containing silicon-based films |
JP2020014007A (ja) * | 2014-10-24 | 2020-01-23 | 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 | ケイ素含有膜の堆積のための組成物及びそれを使用した方法 |
JP2022000913A (ja) * | 2014-10-24 | 2022-01-04 | 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 | ケイ素含有膜の堆積のための組成物及びそれを使用した方法 |
JP7152576B2 (ja) | 2014-10-24 | 2022-10-12 | 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 | ケイ素含有膜の堆積のための組成物及びそれを使用した方法 |
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