JP4293359B2 - 酸化膜の原子層堆積方法 - Google Patents
酸化膜の原子層堆積方法 Download PDFInfo
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- JP4293359B2 JP4293359B2 JP2004043728A JP2004043728A JP4293359B2 JP 4293359 B2 JP4293359 B2 JP 4293359B2 JP 2004043728 A JP2004043728 A JP 2004043728A JP 2004043728 A JP2004043728 A JP 2004043728A JP 4293359 B2 JP4293359 B2 JP 4293359B2
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- hafnium
- precursor
- nitrate
- chamber
- containing precursor
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- 238000000034 method Methods 0.000 title claims description 158
- 238000000231 atomic layer deposition Methods 0.000 title claims description 27
- 239000002243 precursor Substances 0.000 claims description 302
- 230000008569 process Effects 0.000 claims description 113
- 229910000449 hafnium oxide Inorganic materials 0.000 claims description 99
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 claims description 99
- 229910052735 hafnium Inorganic materials 0.000 claims description 91
- 238000000151 deposition Methods 0.000 claims description 85
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 69
- TZNXTUDMYCRCAP-UHFFFAOYSA-N hafnium(4+);tetranitrate Chemical compound [Hf+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O TZNXTUDMYCRCAP-UHFFFAOYSA-N 0.000 claims description 68
- 238000010926 purge Methods 0.000 claims description 64
- 239000000758 substrate Substances 0.000 claims description 52
- 239000007800 oxidant agent Substances 0.000 claims description 43
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 37
- 229910052710 silicon Inorganic materials 0.000 claims description 37
- 239000010703 silicon Substances 0.000 claims description 37
- 239000004065 semiconductor Substances 0.000 claims description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 25
- 239000001301 oxygen Substances 0.000 claims description 25
- 229910052760 oxygen Inorganic materials 0.000 claims description 25
- -1 hafnium halide Chemical class 0.000 claims description 24
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 23
- 229910002651 NO3 Inorganic materials 0.000 claims description 21
- 239000003446 ligand Substances 0.000 claims description 21
- 238000000137 annealing Methods 0.000 claims description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- 239000011261 inert gas Substances 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- SDTMFDGELKWGFT-UHFFFAOYSA-N 2-methylpropan-2-olate Chemical compound CC(C)(C)[O-] SDTMFDGELKWGFT-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 125000002524 organometallic group Chemical group 0.000 claims description 5
- 150000004703 alkoxides Chemical class 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- FLVFLHZPYDNHJE-UHFFFAOYSA-N chloro hypochlorite;hafnium Chemical compound [Hf].ClOCl FLVFLHZPYDNHJE-UHFFFAOYSA-N 0.000 claims description 4
- BQYMOILRPDTPPJ-UHFFFAOYSA-J hafnium(4+);trifluoromethanesulfonate Chemical compound [Hf+4].[O-]S(=O)(=O)C(F)(F)F.[O-]S(=O)(=O)C(F)(F)F.[O-]S(=O)(=O)C(F)(F)F.[O-]S(=O)(=O)C(F)(F)F BQYMOILRPDTPPJ-UHFFFAOYSA-J 0.000 claims description 4
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 claims description 4
- 125000001424 substituent group Chemical group 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 125000005594 diketone group Chemical group 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- HRJSLUPAMXKPPM-UHFFFAOYSA-N 5-methyl-2-(3-methylphenyl)pyrazol-3-amine Chemical compound N1=C(C)C=C(N)N1C1=CC=CC(C)=C1 HRJSLUPAMXKPPM-UHFFFAOYSA-N 0.000 claims description 2
- MCFIMQJAFAOJPD-MTOQALJVSA-J hafnium(4+) (Z)-4-oxopent-2-en-2-olate Chemical compound [Hf+4].C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O MCFIMQJAFAOJPD-MTOQALJVSA-J 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 239000010408 film Substances 0.000 description 93
- 229910052751 metal Inorganic materials 0.000 description 74
- 239000002184 metal Substances 0.000 description 74
- 230000008021 deposition Effects 0.000 description 42
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 35
- 239000010409 thin film Substances 0.000 description 35
- 229910044991 metal oxide Inorganic materials 0.000 description 33
- 150000004706 metal oxides Chemical class 0.000 description 33
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 31
- 239000010410 layer Substances 0.000 description 28
- 229910052782 aluminium Inorganic materials 0.000 description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 23
- 230000001590 oxidative effect Effects 0.000 description 23
- 239000000463 material Substances 0.000 description 19
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 16
- 238000005229 chemical vapour deposition Methods 0.000 description 16
- 235000012239 silicon dioxide Nutrition 0.000 description 16
- 239000000377 silicon dioxide Substances 0.000 description 16
- 238000001179 sorption measurement Methods 0.000 description 13
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- 239000000376 reactant Substances 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
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- 229910001960 metal nitrate Inorganic materials 0.000 description 8
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- 230000006870 function Effects 0.000 description 7
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 7
- 229910001928 zirconium oxide Inorganic materials 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 238000005137 deposition process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- PDPJQWYGJJBYLF-UHFFFAOYSA-J hafnium tetrachloride Chemical compound Cl[Hf](Cl)(Cl)Cl PDPJQWYGJJBYLF-UHFFFAOYSA-J 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000011534 incubation Methods 0.000 description 5
- 239000012705 liquid precursor Substances 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 238000010574 gas phase reaction Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000007086 side reaction Methods 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- CECABOMBVQNBEC-UHFFFAOYSA-K aluminium iodide Chemical compound I[Al](I)I CECABOMBVQNBEC-UHFFFAOYSA-K 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
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- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- USPBSVTXIGCMKY-UHFFFAOYSA-N hafnium Chemical compound [Hf].[Hf] USPBSVTXIGCMKY-UHFFFAOYSA-N 0.000 description 2
- FEEFWFYISQGDKK-UHFFFAOYSA-J hafnium(4+);tetrabromide Chemical compound Br[Hf](Br)(Br)Br FEEFWFYISQGDKK-UHFFFAOYSA-J 0.000 description 2
- QHEDSQMUHIMDOL-UHFFFAOYSA-J hafnium(4+);tetrafluoride Chemical compound F[Hf](F)(F)F QHEDSQMUHIMDOL-UHFFFAOYSA-J 0.000 description 2
- YCJQNNVSZNFWAH-UHFFFAOYSA-J hafnium(4+);tetraiodide Chemical compound I[Hf](I)(I)I YCJQNNVSZNFWAH-UHFFFAOYSA-J 0.000 description 2
- 150000002431 hydrogen Chemical group 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
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- 238000005259 measurement Methods 0.000 description 2
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- 239000007769 metal material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 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 description 2
- 238000002161 passivation Methods 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 description 2
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 2
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 description 2
- WCGXJPFHTHQNJL-UHFFFAOYSA-N 1-[5-ethyl-2-hydroxy-4-[6-methyl-6-(2H-tetrazol-5-yl)heptoxy]phenyl]ethanone Chemical compound CCC1=CC(C(C)=O)=C(O)C=C1OCCCCCC(C)(C)C1=NNN=N1 WCGXJPFHTHQNJL-UHFFFAOYSA-N 0.000 description 1
- IZYHZMFAUFITLK-UHFFFAOYSA-N 1-ethenyl-2,4-difluorobenzene Chemical compound FC1=CC=C(C=C)C(F)=C1 IZYHZMFAUFITLK-UHFFFAOYSA-N 0.000 description 1
- ZAWWRCDFZPMIQT-UHFFFAOYSA-N 2-(carbamoylamino)-3-(3,4-dimethoxyphenyl)-2-methylpropanoic acid Chemical compound COC1=CC=C(CC(C)(NC(N)=O)C(O)=O)C=C1OC ZAWWRCDFZPMIQT-UHFFFAOYSA-N 0.000 description 1
- CYXWZTKRUQZGBI-UHFFFAOYSA-N 2-cyano-n-(3-ethoxypropyl)acetamide Chemical compound CCOCCCNC(=O)CC#N CYXWZTKRUQZGBI-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- BIMNYOYXNJTOFO-UHFFFAOYSA-N C1=CC=CC1[Hf](C)(C)C1C=CC=C1 Chemical compound C1=CC=CC1[Hf](C)(C)C1C=CC=C1 BIMNYOYXNJTOFO-UHFFFAOYSA-N 0.000 description 1
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- 239000004215 Carbon black (E152) Chemical group 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- UHCOEQZUSAFLHQ-UHFFFAOYSA-L Cl[Hf](Cl)(C1C=CC=C1)C1C=CC=C1 Chemical compound Cl[Hf](Cl)(C1C=CC=C1)C1C=CC=C1 UHCOEQZUSAFLHQ-UHFFFAOYSA-L 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 241001024304 Mino Species 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical class CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000000560 X-ray reflectometry Methods 0.000 description 1
- 125000005595 acetylacetonate group Chemical group 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 238000000277 atomic layer chemical vapour deposition Methods 0.000 description 1
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- 229910052796 boron Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- 238000011109 contamination Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- VBCSQFQVDXIOJL-UHFFFAOYSA-N diethylazanide;hafnium(4+) Chemical compound [Hf+4].CC[N-]CC.CC[N-]CC.CC[N-]CC.CC[N-]CC VBCSQFQVDXIOJL-UHFFFAOYSA-N 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000572 ellipsometry Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- JLBDCKZHXIMIPW-UHFFFAOYSA-L hafnium(4+);2-propan-2-ylcyclopenta-1,3-diene;dichloride Chemical compound [Cl-].[Cl-].[Hf+4].CC(C)C1=[C-]CC=C1.CC(C)C1=[C-]CC=C1 JLBDCKZHXIMIPW-UHFFFAOYSA-L 0.000 description 1
- 229930195733 hydrocarbon Chemical group 0.000 description 1
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- 238000007654 immersion Methods 0.000 description 1
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- 229910052738 indium Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
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- 238000002955 isolation Methods 0.000 description 1
- 239000005001 laminate film Substances 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000004681 metal hydrides Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000002120 nanofilm Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 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 1
- 239000002245 particle Substances 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000000391 spectroscopic ellipsometry Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
- C30B25/02—Epitaxial-layer growth
- C30B25/14—Feed and outlet means for the gases; Modifying the flow of the reactive gases
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
- C30B25/02—Epitaxial-layer growth
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/16—Oxides
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Formation Of Insulating Films (AREA)
- Chemical Vapour Deposition (AREA)
Description
金属酸化物ナノラミネート膜を形成する間、第1の硝酸金属含有プリカーサ(硝酸金属を含有するプリカーサ)を第2の金属含有プリカーサ(金属を含有するプリカーサ)のための酸化剤として用いる方法が、本発明者らによる、同時係属出願中の「Atomic layer deposition of nanolaminate film」という名称の出願において提供される。本発明は、酸化ハフニウム膜を形成する間、硝酸ハフニウム含有プリカーサ(硝酸ハフニウムを含有するプリカーサ)を、酸素非含有のハフニウム含有プリカーサ(ハフニウムを含有するプリカーサ)のための酸化剤として用いる方法を提供する。
酸化物薄膜を堆積する原子層堆積法が提供される。この方法は、第1のプリカーサのニトレート配位子を、第2のプリカーサのための酸化剤として用いて、酸化ハフニウムを形成する。硝酸ハフニウムプリカーサおよび塩化ハフニウムプリカーサを用いることによって、この方法は、水素終端処理されたシリコン表面上に、ゲート誘電体またはキャパシタ誘電体に用いるHigh−k酸化ハフニウム誘電体を堆積することによく適している。
141 シリコン基板
142 フィールド酸化物
143 酸化ハフニウム層
143’ 他の酸化ハフニウム層
144 酸化アルミニウム層
144’ 他の酸化アルミニウム層
Claims (19)
- 酸化ハフニウム膜を形成する原子層堆積プロセスにおいて、硝酸ハフニウム含有プリカーサを、酸素非含有プリカーサであるハフニウム含有プリカーサのための酸化剤として用いる方法であって、
a.硝酸ハフニウム含有プリカーサを導入する工程と、
b.該硝酸ハフニウム含有プリカーサをパージする工程と、
c.硝酸ハフニウムと反応するよう選択された、酸素非含有プリカーサであるハフニウム含有プリカーサを導入する工程と、
d.該酸素非含有プリカーサであるハフニウム含有プリカーサをパージする工程と
を包含する、方法。 - 前記硝酸ハフニウム含有プリカーサのニトレート配位子のうちの一部であって、全てではないニトレート配位子が、置換基Rと置換され、該置換基Rは、水素、酸素、オキシニトレート、ヒドロキシル、芳香族、アミン、アルキル、シリル、アルコキシド、ジケトンおよびこれらの混合物からなる群から選択される、請求項1に記載の方法。
- 前記酸素非含有プリカーサであるハフニウム含有プリカーサは、ハフニウムアルキル、ハロゲン化ハフニウム、ハフニウムジケトネート、ハフニウムアルコキシド、ハフニウムハイドライド、ハフニウムシリル、ハフニウムアミド、ハフニウムアセチルアセトネート、ハフニウムt−ブトキシド、ハフニウムエトキシド、ならびにこれらの混合物および組合せからなる群から選択される、請求項1に記載の方法。
- 工程aの前に、200℃未満の温度まで前記基板を加熱する工程をさらに包含する、請求項1に記載の方法。
- 前記チャンバをパージする工程は、窒素または不活性ガスを前記チャンバに流すことによって達成される、請求項1に記載の方法。
- 前記チャンバをパージする工程は、前記チャンバから全てのガスを排出することによって達成される、請求項1に記載の方法。
- 前記酸化ハフニウム膜の膜厚として所望の厚さが得られるまで前記工程が繰り返される、請求項1に記載の方法。
- 前記酸化ハフニウム膜の膜厚として前記所望の厚さが得られた後に、堆積後のアニーリング工程をさらに包含する、請求項1に記載の方法。
- 半導体基板上に酸化ハフニウム膜を形成する原子層堆積プロセスにおいて、硝酸ハフニウムプリカーサを、酸素非含有プリカーサであるハフニウム含有プリカーサのための酸化剤として用いる方法であって、
a.水素終端処理されたシリコン表面を原子層堆積チャンバ内の半導体基板上に提供する工程と、
b.硝酸ハフニウムプリカーサを該チャンバに導入する工程と、
c.該チャンバをパージする工程と、
d.硝酸ハフニウムと反応するよう選択された、酸素非含有プリカーサであるハフニウム含有プリカーサを該チャンバに導入する工程と、
e.該チャンバをパージする工程と
を包含する、方法。 - 前記硝酸ハフニウムプリカーサは、無水窒化ハフニウムプリカーサである、請求項9に記載の方法。
- 前記酸素非含有プリカーサであるハフニウム含有プリカーサは、ハロゲン化ハフニウムプリカーサである、請求項9に記載の方法。
- 前記酸素非含有プリカーサであるハフニウム含有プリカーサは、ハフニウムt−ブトキシド、ハフニウムオキシクロリド、ハフニウムトリフレートからなる群から選択される有機金属プリカーサである、請求項9に記載の方法。
- 工程aの後、工程bの前に、200℃未満の温度まで前記基板を加熱する工程をさらに包含する、請求項9に記載の方法。
- 前記チャンバをパージする工程は、窒素または不活性ガスをチャンバに流すことによって達成される、請求項9に記載の方法。
- 前記チャンバをパージする工程は、該チャンバから全てのガスを排出することによって達成される、請求項9に記載の方法。
- 前記酸化ハフニウム膜の所望の厚さが得られるまで前記工程b〜前記工程eが繰り返され、最後の工程は、工程bまたは工程cである、請求項9に記載の方法。
- 前記酸化ハフニウム膜の所望の厚さが得られるまで前記工程b〜前記工程eが繰り返され、最後の工程は、工程dまたは工程eである、請求項9に記載の方法。
- 前記酸化ハフニウム膜の前記所望の厚さが得られた後に、堆積後アニーリング工程をさらに包含する、請求項17に記載の方法。
- 前記堆積後アニーリングの時間は、10秒から5分の間の時間であり、該堆積後アニーリングの温度は、400〜1000℃の間の温度である、請求項18に記載の方法。
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JP3920235B2 (ja) * | 2003-03-24 | 2007-05-30 | 株式会社ルネサステクノロジ | 半導体装置の製造方法 |
US7442415B2 (en) * | 2003-04-11 | 2008-10-28 | Sharp Laboratories Of America, Inc. | Modulated temperature method of atomic layer deposition (ALD) of high dielectric constant films |
JP2005064317A (ja) * | 2003-08-18 | 2005-03-10 | Semiconductor Leading Edge Technologies Inc | 半導体装置 |
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US20040168627A1 (en) | 2004-09-02 |
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TWI263695B (en) | 2006-10-11 |
JP2004256916A (ja) | 2004-09-16 |
TW200424344A (en) | 2004-11-16 |
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