WO2006082739A1 - タンタル化合物、その製造方法、タンタル含有薄膜、及びその形成方法 - Google Patents
タンタル化合物、その製造方法、タンタル含有薄膜、及びその形成方法 Download PDFInfo
- Publication number
- WO2006082739A1 WO2006082739A1 PCT/JP2006/301116 JP2006301116W WO2006082739A1 WO 2006082739 A1 WO2006082739 A1 WO 2006082739A1 JP 2006301116 W JP2006301116 W JP 2006301116W WO 2006082739 A1 WO2006082739 A1 WO 2006082739A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tantalum
- carbon atoms
- alkyl group
- general formula
- thin film
- Prior art date
Links
- 229910052715 tantalum Inorganic materials 0.000 title claims abstract description 80
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 150000003482 tantalum compounds Chemical class 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000010409 thin film Substances 0.000 title claims description 69
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 31
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 26
- 239000000126 substance Substances 0.000 claims abstract description 17
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 13
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 11
- -1 alkali metal salt Chemical class 0.000 claims description 20
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 14
- 229910052783 alkali metal Inorganic materials 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 8
- 125000005843 halogen group Chemical group 0.000 claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 6
- 150000001340 alkali metals Chemical class 0.000 claims description 4
- 125000001153 fluoro group Chemical group F* 0.000 claims description 3
- 150000003481 tantalum Chemical class 0.000 claims description 3
- 125000004665 trialkylsilyl group Chemical group 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 abstract description 7
- 239000010408 film Substances 0.000 description 33
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 27
- 239000007789 gas Substances 0.000 description 25
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 24
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 21
- 238000006243 chemical reaction Methods 0.000 description 21
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 20
- 230000015572 biosynthetic process Effects 0.000 description 19
- 239000002904 solvent Substances 0.000 description 18
- 238000005229 chemical vapour deposition Methods 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- 238000000231 atomic layer deposition Methods 0.000 description 15
- 239000007787 solid Substances 0.000 description 15
- 239000000758 substrate Substances 0.000 description 15
- 229910052786 argon Inorganic materials 0.000 description 12
- 229910052710 silicon Inorganic materials 0.000 description 11
- 239000010703 silicon Substances 0.000 description 11
- UHOVQNZJYSORNB-MICDWDOJSA-N deuteriobenzene Chemical compound [2H]C1=CC=CC=C1 UHOVQNZJYSORNB-MICDWDOJSA-N 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 239000012159 carrier gas Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 6
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 238000009834 vaporization Methods 0.000 description 6
- 230000008016 vaporization Effects 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 5
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 5
- 239000000706 filtrate Substances 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- 238000002076 thermal analysis method Methods 0.000 description 5
- 239000008096 xylene Substances 0.000 description 5
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000001819 mass spectrum Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- BKIMMITUMNQMOS-UHFFFAOYSA-N nonane Chemical compound CCCCCCCCC BKIMMITUMNQMOS-UHFFFAOYSA-N 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 239000006228 supernatant Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005160 1H NMR spectroscopy Methods 0.000 description 3
- 238000005481 NMR spectroscopy Methods 0.000 description 3
- LVKCSZQWLOVUGB-UHFFFAOYSA-M magnesium;propane;bromide Chemical compound [Mg+2].[Br-].C[CH-]C LVKCSZQWLOVUGB-UHFFFAOYSA-M 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 238000005240 physical vapour deposition Methods 0.000 description 3
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- OEIMLTQPLAGXMX-UHFFFAOYSA-I tantalum(v) chloride Chemical compound Cl[Ta](Cl)(Cl)(Cl)Cl OEIMLTQPLAGXMX-UHFFFAOYSA-I 0.000 description 3
- IQSUNBLELDRPEY-UHFFFAOYSA-N 1-ethylcyclopenta-1,3-diene Chemical compound CCC1=CC=CC1 IQSUNBLELDRPEY-UHFFFAOYSA-N 0.000 description 2
- SQLWOAWYBWWOBU-UHFFFAOYSA-N CC1=CC=CC=C1.COCCO[AlH]OCCOC.[Na] Chemical compound CC1=CC=CC=C1.COCCO[AlH]OCCOC.[Na] SQLWOAWYBWWOBU-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical class C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229910010082 LiAlH Inorganic materials 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- VQYPKWOGIPDGPN-UHFFFAOYSA-N [C].[Ta] Chemical compound [C].[Ta] VQYPKWOGIPDGPN-UHFFFAOYSA-N 0.000 description 2
- BKHJHGONWLDYCV-UHFFFAOYSA-N [C]=O.[C] Chemical compound [C]=O.[C] BKHJHGONWLDYCV-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 150000001793 charged compounds Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000000921 elemental analysis Methods 0.000 description 2
- 239000004210 ether based solvent Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000002198 insoluble material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 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
- DIIIISSCIXVANO-UHFFFAOYSA-N 1,2-Dimethylhydrazine Chemical compound CNNC DIIIISSCIXVANO-UHFFFAOYSA-N 0.000 description 1
- QZOJRSAENHTURL-UHFFFAOYSA-N 1-azidobutane Chemical compound CCCCN=[N+]=[N-] QZOJRSAENHTURL-UHFFFAOYSA-N 0.000 description 1
- 229920001393 Crofelemer Polymers 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- SDXNSNVRODGBMP-UHFFFAOYSA-N [CH3].[Ta] Chemical compound [CH3].[Ta] SDXNSNVRODGBMP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 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
- XKLVLDXNZDIDKQ-UHFFFAOYSA-N butylhydrazine Chemical compound CCCCNN XKLVLDXNZDIDKQ-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000007809 chemical reaction catalyst Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 150000001940 cyclopentanes Chemical class 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- XZGGQBBRFYZKTL-UHFFFAOYSA-L dichlorotantalum Chemical compound Cl[Ta]Cl XZGGQBBRFYZKTL-UHFFFAOYSA-L 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- JJVJPJWQXDQCEI-UHFFFAOYSA-N ethenylhydrazine Chemical compound NNC=C JJVJPJWQXDQCEI-UHFFFAOYSA-N 0.000 description 1
- WHRIKZCFRVTHJH-UHFFFAOYSA-N ethylhydrazine Chemical compound CCNN WHRIKZCFRVTHJH-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- ZBDWUWNQBVXRMA-UHFFFAOYSA-N lithium;5-ethylcyclopenta-1,3-diene Chemical compound [Li+].CC[C-]1C=CC=C1 ZBDWUWNQBVXRMA-UHFFFAOYSA-N 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 125000002524 organometallic group Chemical group 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
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 125000005003 perfluorobutyl group Chemical group FC(F)(F)C(F)(F)C(F)(F)C(F)(F)* 0.000 description 1
- 125000005004 perfluoroethyl group Chemical group FC(F)(F)C(F)(F)* 0.000 description 1
- 125000005008 perfluoropentyl group Chemical group FC(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)* 0.000 description 1
- 125000005009 perfluoropropyl group Chemical group FC(C(C(F)(F)F)(F)F)(F)* 0.000 description 1
- UXGJIYZFPDSEBM-UHFFFAOYSA-N phenol;azide Chemical compound [N-]=[N+]=[N-].OC1=CC=CC=C1 UXGJIYZFPDSEBM-UHFFFAOYSA-N 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 1
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229910003468 tantalcarbide Inorganic materials 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 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
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 1
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 1
- 239000005052 trichlorosilane Substances 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
-
- 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
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F17/00—Metallocenes
-
- 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
- C07F19/00—Metal compounds according to more than one of main groups C07F1/00 - C07F17/00
-
- 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
-
- 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
- H01L21/34—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 not provided for in groups H01L21/0405, H01L21/0445, H01L21/06, H01L21/16 and H01L21/18 with or without impurities, e.g. doping materials
- H01L21/44—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/38 - H01L21/428
Definitions
- Tantalum compound production method thereof, tantalum-containing thin film, and formation method thereof
- the present invention relates to a novel tantalum compound and a method for producing the same.
- the tantalum compound of the present invention is useful for forming a tantalum-containing thin film by chemical vapor deposition (CVD) or atomic layer deposition (ALD).
- the present invention also relates to a method for forming a tantalum-containing thin film useful for manufacturing a semiconductor element and a tantalum-containing thin film.
- the device structure has been miniaturized. Since the wiring width in the device has become narrower and aluminum, which has been used as a conventional wiring material, delays in signal transmission become a problem, copper has been used. Although copper has a characteristic of low resistance, it has a drawback that it easily diffuses into the silicon oxide used for the insulating film between the wirings and lowers the performance of the insulating film. For this reason, a method of providing a barrier film for preventing diffusion between the wiring and the insulating film is taken. As the noria film, a tantalum nitride film is generally used because of its high ability to prevent diffusion of copper.
- the tantalum nitride film has poor adhesion to the copper seed film for forming the copper wiring by plating, and peeling occurs between the copper seed film during wiring formation or during flattening after wiring formation. causess the occurrence. Therefore, a method of preventing peeling by forming a metal tantalum film between a tantalum nitride film that is a barrier film and a copper seed film is used.
- PVD physical vapor deposition
- ALD atomic layer deposition
- a tantalum nitride film and a metal tantalum film are formed by the CVD method or the ALD method It is desirable that both films can be formed from the same tantalum raw material in one reaction tank, and halides such as TaCl and TaBr have been studied as raw materials for such a forming method.
- Cp TaH (Non-Patent Document 4) is known as an organometallic compound containing tantalum.
- Patent Document 1 US Patent No. 6491987
- Patent Document 2 US Pat. No. 6,743,473 Specification
- Non-Patent Document 1 X. Chen, H. L. Frisch, A. E. Kaloyeros, B. Arkles and J. Sullivan, J. Vac. Sci. Technol. B 1999, 17, 182
- Non-Patent Document 2 K. Sugiyama, S. Pac, Y. Takahashi and S. Motojima, J. El ectrochem. Soc. 1975, 122, 1545
- Non-Patent Document 3 M. H. Tsai, S. C. Sun, C. E. Tsai, S. H. Chuang and H. T. Chiu, J. Appl. Phys. 1996, 79, 6932
- Non-Patent Document 4 M. L. H. Green, J. A. McCleverty, L. Pratt and G. Wilkins on, J. Chem. Soc. 1961, 4854
- Non-Patent Document 5 A. H. Klazinga and J. H. Teuben, J. Organomet. Chem. 1 978, 157, 413
- the first object of the present invention is to provide a tantalum-containing thin film that does not contain halogen and nitrogen in its molecule and does not contain these elements, and various tantalums containing the target element by adding reactive gas. It is an object of the present invention to provide a novel tantalum compound and a method for producing the same that can make a contained thin film.
- the second object of the present invention is to provide a method for stably forming a tantalum-containing thin film containing the target element and a tantalum-containing thin film containing any element.
- the present inventors have found that the first object can be achieved by a tantalum compound represented by the following general formulas (1) and (2).
- the first invention provides the following general formula (1)
- R 1 represents a linear alkyl group having 2 to 6 carbon atoms.
- R 2 represents a linear alkyl group having 2 to 6 carbon atoms.
- R 2 is a linear alkyl group having 2 to 6 carbon atoms, M represents an alkali metal
- a reducing agent is reacted with an alkali metal salt of a substituted cyclopentagen.
- the tantalum compound represented by the general formula (2) is reacted with carbon monoxide. is there.
- the second object is a tantalum compound represented by the following general formula (6).
- R 3 to R 6 is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, A trialkylsilyl group having 3 to 6 carbon atoms, or an alkyl group having 1 to 6 carbon atoms, which may be substituted with one or more fluorine atoms, is used as a raw material.
- This is a method for forming a tantalum-containing thin film. Moreover, it is a tantalum containing thin film formed by the method.
- the novel tantalum compound of the present invention can be used as a raw material for a tantalum-containing thin film by the CVD method or the ALD method because of its vaporization and decomposition characteristics. Also, various tantalum-containing thin films containing the target element by forming a tantalum-containing thin film and adding a reactive gas without containing halogen and nitrogen in the molecule and thus not containing these elements. Can be formed.
- the novel tantalum compound of the present invention can also be expected to function as a reaction catalyst.
- various tantalum thin films containing a target element such as a metal tantalum thin film or a tantalum nitride thin film can be stably formed. Is possible.
- FIG. 1 shows the thermal analysis (TG and DSC) results of the tantalum compound obtained in Example 2.
- FIG. 2 shows the thermal analysis (TG and DSC) results of the tantalum compound obtained in Example 5.
- FIG. 3 is a mass spectrum measurement result of the tantalum compound obtained in Example 2.
- FIG. 4 is a mass spectrum measurement result of the tantalum compound obtained in Example 5.
- FIG. 5 shows the element distribution in the depth direction of the tantalum-containing thin film obtained in Example 8.
- FIG. 6 shows the element distribution state in the depth direction of the tantalum-containing thin film obtained in Example 9.
- Cp represents a cyclopentagel group
- Et represents an ethyl group
- Pr represents a propyl group
- Bu represents a butyl group
- THF represents a tetrahydrofuran
- R 1 and R 2 represent a linear alkyl group having 2 to 6 carbon atoms.
- R 1 and R 2 represent a linear alkyl group having 2 to 6 carbon atoms.
- R 1 and R 2 represent a linear alkyl group having 2 to 6 carbon atoms.
- the tantalum compound represented by the general formula (2) is a halo such as TaCl represented by the general formula (3).
- 5 Geny tantalum can be used as a raw material.
- the synthesis method is TaCp H synthesis method and
- R 2 is a linear alkyl group having 2 to 6 carbon atoms, X is halogen
- a method of synthesizing by reacting this with a reducing agent or MLH Green, JA McCleverty, L. Pratt and G. Wilkinson J. Chem. Soc.
- TaCl, TaBr, Tal, etc. are used as tantalum halides.
- TaCl is preferable in terms of price and availability.
- NaAlH (OCH) As a reducing agent, NaAlH (OCH
- alkali metal salt of Gen Na salt, K salt and Li salt are preferable.
- solvent for the reaction ether solvents such as jetyl ether and THF, and hydrocarbon solvents such as hexane, heptane, octane, toluene and xylene can be used.
- the tantalum compound represented by the general formula (1) can be synthesized by reacting carbon dioxide with the tantalum compound represented by the general formula (2).
- the reaction can be carried out by dissolving or suspending the tantalum compound represented by the general formula (2) in a solvent and under a carbon monoxide atmosphere under pressure or normal pressure.
- the solvent used in this case is a hydrocarbon solvent having a boiling point of 100 ° C or higher, such as toluene, Xylene, octane, Nan, decane and the like are preferred.
- the substituent R 2 in the tantalum compound represented by the general formula (2) is not changed by this reaction, and the substituent R 1 in the tantalum compound represented by the general formula (1) is used as it is. It becomes.
- the tantalum compound represented by the general formula (1) and the tantalum compound represented by the general formula (2) can be vaporized at 200 ° C or less by thermal analysis (TG and DSC). Since it is thermally decomposed at -30 ° C to 300 ° C, it can be used as a raw material for the formation of tantalum-containing thin films by CVD or ALD.
- the alkyl group having 1 to 6 carbon atoms represented by R 3 , R 4 , R 5 and R 6 includes a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group.
- Isopropyl group, tert-butyl group, etc., and examples of the trialkylsilyl group having 3 to 6 carbon atoms include trimethylsilyl group, ethyldimethylsilyl group, jetylmethylsilyl group, and triethylsilyl group. be able to.
- the alkyl group having 1 to 6 carbon atoms which may be substituted with one or more fluorine atoms includes trifluoromethyl group, perfluoroethyl group, perfluoropropyl group, perfluorobutyl.
- Groups, perfluoropentyl groups, perfluorinated hexyl groups, perfluoroisopropyl groups, perfluoro-tert-butyl groups and the like can be listed.
- the tantalum compound of the general formula (6) is used as a raw material for the tantalum-containing thin film.
- the method for forming the thin film is not particularly limited. In order to form a uniform film on the uneven surface, the CVD method or ALD method is preferred as the film formation method! In the ALD method, the raw material with a low melting point and high vapor pressure is preferred.
- the raw material with a low melting point and high vapor pressure is preferred.
- R 4 and R 6 are hydrogen atoms and R 3 R 5 is more preferably a linear alkyl group having 2 to 4 carbon atoms.
- R 4 and R 6 are preferably a hydrogen atom and R 3 and R 5 are preferably an ethyl group or a propyl group.
- R 4 and R 6 are preferably a hydrogen atom and R 3 and R 5 are preferably an ethyl group.
- the tantalum compound represented by the general formula (6) is a compound of a halogenated tantalum compound such as TaCl. Reactable Ta ((R 3 ) (R 4 ) Cp) ((R 5 ) (R 6 ) Cp) H with carbon monoxide jkmn 3
- Ta ((R 3 ) (R 4 ) Cp) ((R 5 ) (R 6 ) Cp) H is synthesized from (R 3 ) (R 4 ) Cp and (R 5 ) (R 6 ) jkmn 3 jkm
- TaCl, TaBr, Tal, etc. are used as tantalum halides.
- alkali metal salts of sodium Na salts, K salts and Li salts are preferred.
- ether solvents such as diethyl ether and THF
- hydrocarbon solvents such as hexane, heptane, octane, toluene and xylene can be used.
- the reaction In a suspended state, the reaction can be carried out under a pressurized condition in a carbon monoxide-carbon atmosphere or under normal pressure. When the reaction is carried out at normal pressure, it is preferable to carry out the reaction at a temperature of 100 ° C or higher.
- the solvent used is a hydrocarbon solvent having a boiling point of 100 ° C or higher, such as toluene. Xylene, octane, nonane, decane and the like are preferable.
- a tantalum compound represented by the general formula (6) is used as a starting material.
- it can be used by dissolving in an organic solvent.
- the organic solvent used in this case is not particularly limited as long as it does not react with the tantalum compound, but hydrocarbon solvents such as hexane, cyclohexane, heptane, octane, toluene and xylene are preferable.
- the raw material is gasified and supplied onto the substrate.
- a carrier gas such as Ar is blown into the liquid raw material together with the carrier gas.
- a publishing method in which a raw material is heated and sublimated by heating a solid raw material and a raw material gas is supplied onto the substrate together with a carrier gas.
- a liquefied raw material or a raw material solution is vaporized in a vaporizer and is then deposited on the substrate. It can be carried out by the liquid injection method to be supplied.
- the thin film is formed by decomposing the raw material supplied on the substrate. Decomposition is possible with heat alone, but plasma, light, etc. may be used in combination. In addition, when a thin film is formed, the composition of the thin film can be changed by coexisting a reactive gas.
- the metal tantalum thin film can also be converted into ammonia, methyl Tantalum nitride by supplying N-containing gas such as hydrazine, dimethyl hydrazine, ethyl hydrazine, jetyl hydrazine, butyl hydrazine, vinyl hydrazine, azide chill, butyl azide, and azide phenol
- N-containing gas such as hydrazine, dimethyl hydrazine, ethyl hydrazine, jetyl hydrazine, butyl hydrazine, vinyl hydrazine, azide chill, butyl azide, and azide phenol
- a silicon-containing tantalum thin film is formed by supplying a Si-containing gas such as monosilane, disilane, dichlorosilane, trichlorosilane, or tetrachlorosilane, and an oxygen-containing gas such as oxygen, ozone, or water vapor is supplied.
- a Si-containing gas such as monosilane, disilane, dichlorosilane, trichlorosilane, or tetrachlorosilane
- an oxygen-containing gas such as oxygen, ozone, or water vapor
- the raw material is in a liquid state! /
- Spin coating method in which the raw material is supplied as a solution, dipping method, spraying method, etc. are also included in the present invention. .
- Trihydridobis (propyl cyclopentagel) tantalum 11.2 g (28. lmmol) was heated in non-acid (200 ml) at 135 ° C. in a carbon monoxide-carbon atmosphere and stirred for 4 hours.
- the solvent was distilled off from the reaction mixture, and the residue extracted with hexane was concentrated to about 200 m and cooled to -70 ° C. The supernatant was removed, and the solid was washed twice with 20 ml of hexane and then dried under reduced pressure to obtain 7.45 g of a purple solid (yield 62.4%).
- Figure 1 shows the thermal analysis results of the resulting tantalum compound.
- the obtained tantalum compound has a wide temperature range in which it can be stably vaporized and is thermally decomposed at around 260 ° C, making it suitable as a raw material for tantalum-containing thin films by CVD or ALD. I understand that.
- the solid obtained by washing twice with 24 ml of cold pentane was distilled under reduced pressure at 2.5 PaZlOO ° C to obtain 7.79 g (yield 10.1%) of a colorless liquid.
- the liquid turned into white crystals upon cooling to room temperature.
- FIG. 2 shows the thermal analysis results of the resulting tantalum compound. From this figure, the obtained tantalum compound does not decompose and has a wide temperature range where it can be stably vaporized. It is thermally decomposed at around 240 ° C, so there is a CVD method! Appropriate!
- the cylinder containing hydridobis (propyl cyclopentagel) carbo-tantalum was heated to 100 ° C, the internal pressure was kept at lOOTorr, and argon gas was blown in at a flow rate of lOOsc cm as a carrier gas for vaporization. This was diluted with argon gas at a flow rate of lOOsccm and introduced into a reaction vessel maintained at 4 Torr. This gas was pyrolyzed on a silicon substrate heated to 400 ° C to deposit a thin film. As a result of analyzing the lOOnm deposited thin film with an X-ray photoelectron spectrometer (XPS), it was a tantalum-containing thin film containing no nitrogen.
- XPS X-ray photoelectron spectrometer
- a cylinder containing hydridobis (propyl cyclopentagel) carbo-tantalum was heated to 100 ° C, the internal pressure was kept at lOOTorr, and argon gas was blown in as a carrier gas at a flow rate of lOOsc cm for vaporization. This was diluted with argon gas at a flow rate of lOOsccm and introduced into a reaction tank maintained at 4 Torr, and at the same time, ammonia gas was introduced into the reaction tank at a flow rate of 2 sccm. This gas was thermally decomposed on a silicon oxide / silicon substrate heated to 400 ° C. to deposit a thin film. As a result of analyzing the lOOnm deposited thin film with an X-ray photoelectron spectrometer (XPS), it was a tantalum-containing thin film containing nitrogen.
- XPS X-ray photoelectron spectrometer
- Caro heat was applied to 90 ° C, the internal pressure was maintained at 50 Torr, and argon gas was blown in as a carrier gas at a flow rate of 28 sccm for vaporization. This generates plasma and is 1.5 X 10 _3 Torr
- a thin film was deposited on a silicon oxide / silicon substrate heated to 300 ° C and introduced into a maintained reaction vessel. The plasma was generated in argon gas with a flow rate of lOsccm by a 2.45 GHz, 600 W microphone mouth wave and an applied magnetic field of 875 G.
- a cylinder containing bis (ethylcyclopentagel) hydridocarbon tantalum was heated to 90 ° C, the internal pressure was maintained at 50 Torr, and argon gas was blown in as a carrier gas at a flow rate of 28 sccm for vaporization.
- This was introduced into a reaction vessel where plasma was generated and maintained at 1.5 X 10 _3 Torr, and a thin film was deposited on a silicon substrate heated to 400 ° C.
- the plasma was generated in argon gas with a flow rate of lOsccm by 2.45GHz, 600W microwave and 875G applied magnetic field.
- the thin film deposited at 5 nm was analyzed using an X-ray photoelectron spectrometer (XP S). As a result, the thin film had a composition of 26% carbon, 19% oxygen, 51% tantalum, and 4% nitrogen. Further, when the resistivity was measured by a four-point probe resistivity measuring device, it was 100 ⁇ ′c
- a cylinder containing bis (ethylcyclopentagel) hydridocarbon tantalum was heated to 90 ° C, the internal pressure was maintained at 70 Torr, and argon gas was blown in as a carrier gas at a flow rate of 55 sccm for vaporization.
- This was introduced into a reaction vessel where plasma was generated and maintained at 7.5 X 10 _3 Torr, and a thin film was deposited on a silicon substrate heated to 300 ° C.
- the plasma was generated in a argon gas containing 4% hydrogen at a flow rate of 40 sccm by a 2.45 GHz, 600 W microphone mouth wave and an applied magnetic field of 875 G.
- the thin film had a composition of 31% carbon, 13% oxygen, and 56% tantalum.
- the resistivity was measured using a four-point probe resistivity measuring device.
- Japanese Patent Application 2005-26727 Japanese patent application filed on February 2, 2005 (Japanese Patent Application 2005-26728), and an application filed on August 24, 2005.
- Japanese patent application Japanese patent application filed August 24, 2005 (Japanese Patent Application 20 05-243054), December 2005 Japanese patent application (Japanese Patent Application 2005- 351086) The contents of which are incorporated herein by reference.
- a novel tantalum compound and a method for producing the same which can make a tantalum-containing thin film containing no halogen or the like and various tantalum-containing thin films containing a target element.
- a method for stably forming a tantalum-containing thin film containing the target element can be provided.
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Priority Applications (3)
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EP06712311A EP1852438B1 (en) | 2005-02-02 | 2006-01-25 | Tantalum compound, method for producing same, tantalum-containing thin film and method for forming same |
CN2006800036257A CN101111502B (zh) | 2005-02-02 | 2006-01-25 | 钽化合物及其制造方法、含钽薄膜及其形成方法 |
US11/815,386 US7592471B2 (en) | 2005-02-02 | 2006-01-25 | Tantalum compound, method for producing same, tantalum-containing thin film and method for forming same |
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JP2005-026728 | 2005-02-02 | ||
JP2005026728 | 2005-02-02 | ||
JP2005026727 | 2005-02-02 | ||
JP2005-026727 | 2005-02-02 | ||
JP2005243053 | 2005-08-24 | ||
JP2005243054 | 2005-08-24 | ||
JP2005-243054 | 2005-08-24 | ||
JP2005-243053 | 2005-08-24 |
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US9507269B2 (en) | 2011-07-11 | 2016-11-29 | Carl Zeiss Smt Gmbh | Illumination optical unit for projection lithography |
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US7605469B2 (en) * | 2004-06-30 | 2009-10-20 | Intel Corporation | Atomic layer deposited tantalum containing adhesion layer |
JP2009016782A (ja) * | 2007-06-04 | 2009-01-22 | Tokyo Electron Ltd | 成膜方法及び成膜装置 |
TWI425110B (zh) | 2007-07-24 | 2014-02-01 | Sigma Aldrich Co | 以化學相沉積法製造含金屬薄膜之方法 |
TWI382987B (zh) * | 2007-07-24 | 2013-01-21 | Sigma Aldrich Co | 應用於化學相沉積製程的有機金屬前驅物 |
WO2010012595A1 (en) * | 2008-08-01 | 2010-02-04 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method of forming a tantalum-containing layer on a substrate |
KR102627456B1 (ko) * | 2015-12-21 | 2024-01-19 | 삼성전자주식회사 | 탄탈럼 화합물과 이를 이용한 박막 형성 방법 및 집적회로 소자의 제조 방법 |
TW201741490A (zh) * | 2016-05-27 | 2017-12-01 | Tes股份有限公司 | 金屬碳膜的沈積方法 |
JP6777933B2 (ja) * | 2016-12-02 | 2020-10-28 | 株式会社高純度化学研究所 | 化学蒸着用原料及びその製造方法、並びに該化学蒸着用原料を用いて形成されるインジウムを含有する酸化物の膜の製造方法 |
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US5130172A (en) | 1988-10-21 | 1992-07-14 | The Regents Of The University Of California | Low temperature organometallic deposition of metals |
US6491987B2 (en) | 1999-05-03 | 2002-12-10 | Guardian Indusries Corp. | Process for depositing DLC inclusive coating with surface roughness on substrate |
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JP2002501075A (ja) * | 1998-01-23 | 2002-01-15 | アドバンスド.テクノロジー.マテリアルズ.インコーポレイテッド | 基板上に窒化タンタルを蒸着(deposition)するためのタンタルアミド前駆物質 |
JP2001329367A (ja) * | 2000-02-16 | 2001-11-27 | Applied Materials Inc | 新規な前駆体からの障壁の化学蒸着 |
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US9507269B2 (en) | 2011-07-11 | 2016-11-29 | Carl Zeiss Smt Gmbh | Illumination optical unit for projection lithography |
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EP1852438A4 (en) | 2008-02-06 |
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KR101215086B1 (ko) | 2012-12-24 |
KR20070101352A (ko) | 2007-10-16 |
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EP1852438A1 (en) | 2007-11-07 |
TWI369360B (en) | 2012-08-01 |
CN101111502A (zh) | 2008-01-23 |
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