JP5735593B2 - 気相成長を介して連続的な銅薄膜を形成する方法 - Google Patents
気相成長を介して連続的な銅薄膜を形成する方法 Download PDFInfo
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- JP5735593B2 JP5735593B2 JP2013178345A JP2013178345A JP5735593B2 JP 5735593 B2 JP5735593 B2 JP 5735593B2 JP 2013178345 A JP2013178345 A JP 2013178345A JP 2013178345 A JP2013178345 A JP 2013178345A JP 5735593 B2 JP5735593 B2 JP 5735593B2
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- Prior art keywords
- carbon atoms
- alkyl
- formula
- copper
- independently
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- 239000010949 copper Substances 0.000 title claims description 200
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 175
- 229910052802 copper Inorganic materials 0.000 title claims description 171
- 238000000034 method Methods 0.000 title claims description 59
- 239000010409 thin film Substances 0.000 title description 3
- 238000007740 vapor deposition Methods 0.000 title description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 108
- 125000000217 alkyl group Chemical group 0.000 claims description 67
- 238000000151 deposition Methods 0.000 claims description 44
- 239000000758 substrate Substances 0.000 claims description 43
- 239000001257 hydrogen Substances 0.000 claims description 42
- 229910052739 hydrogen Inorganic materials 0.000 claims description 42
- 229910052707 ruthenium Inorganic materials 0.000 claims description 42
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical group [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 41
- 239000002243 precursor Substances 0.000 claims description 38
- -1 alkyl nitrile Chemical class 0.000 claims description 37
- 150000001408 amides Chemical class 0.000 claims description 33
- 125000003545 alkoxy group Chemical group 0.000 claims description 32
- 239000003446 ligand Substances 0.000 claims description 31
- 239000012691 Cu precursor Substances 0.000 claims description 29
- 230000008021 deposition Effects 0.000 claims description 29
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 26
- 125000003118 aryl group Chemical group 0.000 claims description 23
- 150000002431 hydrogen Chemical class 0.000 claims description 21
- 125000004429 atom Chemical group 0.000 claims description 18
- 239000003638 chemical reducing agent Substances 0.000 claims description 15
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 13
- 150000001336 alkenes Chemical class 0.000 claims description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- 150000001345 alkine derivatives Chemical class 0.000 claims description 8
- 150000001361 allenes Chemical class 0.000 claims description 7
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 claims description 7
- 125000004122 cyclic group Chemical group 0.000 claims description 7
- 125000003709 fluoroalkyl group Chemical group 0.000 claims description 7
- 125000004407 fluoroaryl group Chemical group 0.000 claims description 7
- 125000005843 halogen group Chemical group 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 6
- 150000001343 alkyl silanes Chemical class 0.000 claims description 6
- 229920001774 Perfluoroether Polymers 0.000 claims description 5
- 150000001993 dienes Chemical class 0.000 claims description 5
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 5
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910000085 borane Inorganic materials 0.000 claims description 4
- 229910000078 germane Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 150000005671 trienes Chemical class 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 3
- YGSZIPUVXAXCLY-UHFFFAOYSA-N isocyanosilane Chemical compound [SiH3][N+]#[C-] YGSZIPUVXAXCLY-UHFFFAOYSA-N 0.000 claims description 3
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- 229910000086 alane Inorganic materials 0.000 claims description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 150000004756 silanes Chemical class 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 112
- 239000010408 film Substances 0.000 description 58
- 229910052751 metal Inorganic materials 0.000 description 45
- 239000002184 metal Substances 0.000 description 43
- 238000000231 atomic layer deposition Methods 0.000 description 35
- 230000004888 barrier function Effects 0.000 description 34
- 230000008569 process Effects 0.000 description 25
- 238000005229 chemical vapour deposition Methods 0.000 description 23
- 125000001424 substituent group Chemical group 0.000 description 19
- 239000003153 chemical reaction reagent Substances 0.000 description 15
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 239000003292 glue Substances 0.000 description 9
- 238000005240 physical vapour deposition Methods 0.000 description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052731 fluorine Inorganic materials 0.000 description 6
- 239000011737 fluorine Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 125000002524 organometallic group Chemical group 0.000 description 6
- 238000004627 transmission electron microscopy Methods 0.000 description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 5
- 229910052697 platinum Inorganic materials 0.000 description 5
- 229910052703 rhodium Inorganic materials 0.000 description 5
- 239000010948 rhodium Substances 0.000 description 5
- 229910052715 tantalum Inorganic materials 0.000 description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 5
- GVNVAWHJIKLAGL-UHFFFAOYSA-N 2-(cyclohexen-1-yl)cyclohexan-1-one Chemical compound O=C1CCCCC1C1=CCCCC1 GVNVAWHJIKLAGL-UHFFFAOYSA-N 0.000 description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 101150065749 Churc1 gene Proteins 0.000 description 4
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- 102100038239 Protein Churchill Human genes 0.000 description 4
- 238000003917 TEM image Methods 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 238000009713 electroplating Methods 0.000 description 4
- 235000019253 formic acid Nutrition 0.000 description 4
- 229910052741 iridium Inorganic materials 0.000 description 4
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 239000011733 molybdenum Substances 0.000 description 4
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- 229910052720 vanadium Inorganic materials 0.000 description 4
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 4
- 229910052726 zirconium Inorganic materials 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229960004643 cupric oxide Drugs 0.000 description 3
- 229910000071 diazene Inorganic materials 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 2
- 239000005751 Copper oxide Substances 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- ILAHWRKJUDSMFH-UHFFFAOYSA-N boron tribromide Chemical compound BrB(Br)Br ILAHWRKJUDSMFH-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 150000001879 copper Chemical class 0.000 description 2
- 229910000431 copper oxide Inorganic materials 0.000 description 2
- RAABOESOVLLHRU-UHFFFAOYSA-N diazene Chemical compound N=N RAABOESOVLLHRU-UHFFFAOYSA-N 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 150000002891 organic anions Chemical class 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RTZYCRSRNSTRGC-LNTINUHCSA-K (z)-4-oxopent-2-en-2-olate;ruthenium(3+) Chemical compound [Ru+3].C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O RTZYCRSRNSTRGC-LNTINUHCSA-K 0.000 description 1
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical class C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 208000012868 Overgrowth Diseases 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- JJHTYXOJDCGTIH-UHFFFAOYSA-H [Al+3].[Al+3].[Cl-].[Cl-].[Cl-].[Br-].[Br-].[Br-] Chemical compound [Al+3].[Al+3].[Cl-].[Cl-].[Cl-].[Br-].[Br-].[Br-] JJHTYXOJDCGTIH-UHFFFAOYSA-H 0.000 description 1
- GPWHDDKQSYOYBF-UHFFFAOYSA-N ac1l2u0q Chemical compound Br[Br-]Br GPWHDDKQSYOYBF-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 125000005234 alkyl aluminium group Chemical group 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000006117 anti-reflective coating Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- YMEKEHSRPZAOGO-UHFFFAOYSA-N boron triiodide Chemical compound IB(I)I YMEKEHSRPZAOGO-UHFFFAOYSA-N 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- NQZFAUXPNWSLBI-UHFFFAOYSA-N carbon monoxide;ruthenium Chemical group [Ru].[Ru].[Ru].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-].[O+]#[C-] NQZFAUXPNWSLBI-UHFFFAOYSA-N 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 description 1
- HFDWIMBEIXDNQS-UHFFFAOYSA-L copper;diformate Chemical compound [Cu+2].[O-]C=O.[O-]C=O HFDWIMBEIXDNQS-UHFFFAOYSA-L 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 description 1
- 229940112669 cuprous oxide Drugs 0.000 description 1
- 125000006165 cyclic alkyl group Chemical group 0.000 description 1
- 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 1
- 125000000058 cyclopentadienyl group Chemical group C1(=CC=CC1)* 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- UCXUKTLCVSGCNR-UHFFFAOYSA-N diethylsilane Chemical compound CC[SiH2]CC UCXUKTLCVSGCNR-UHFFFAOYSA-N 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- UBHZUDXTHNMNLD-UHFFFAOYSA-N dimethylsilane Chemical compound C[SiH2]C UBHZUDXTHNMNLD-UHFFFAOYSA-N 0.000 description 1
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- ZSWFCLXCOIISFI-UHFFFAOYSA-N endo-cyclopentadiene Natural products C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 1
- GCSJLQSCSDMKTP-UHFFFAOYSA-N ethenyl(trimethyl)silane Chemical compound C[Si](C)(C)C=C GCSJLQSCSDMKTP-UHFFFAOYSA-N 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 1
- KCWYOFZQRFCIIE-UHFFFAOYSA-N ethylsilane Chemical compound CC[SiH3] KCWYOFZQRFCIIE-UHFFFAOYSA-N 0.000 description 1
- 229940104869 fluorosilicate Drugs 0.000 description 1
- 150000002258 gallium Chemical class 0.000 description 1
- UPWPDUACHOATKO-UHFFFAOYSA-K gallium trichloride Chemical compound Cl[Ga](Cl)Cl UPWPDUACHOATKO-UHFFFAOYSA-K 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 125000001188 haloalkyl group Chemical group 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- PARWUHTVGZSQPD-UHFFFAOYSA-N phenylsilane Chemical compound [SiH3]C1=CC=CC=C1 PARWUHTVGZSQPD-UHFFFAOYSA-N 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- DNAJDTIOMGISDS-UHFFFAOYSA-N prop-2-enylsilane Chemical compound [SiH3]CC=C DNAJDTIOMGISDS-UHFFFAOYSA-N 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- FZHCFNGSGGGXEH-UHFFFAOYSA-N ruthenocene Chemical compound [Ru+2].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 FZHCFNGSGGGXEH-UHFFFAOYSA-N 0.000 description 1
- 238000000682 scanning probe acoustic microscopy Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- AIFMYMZGQVTROK-UHFFFAOYSA-N silicon tetrabromide Chemical class Br[Si](Br)(Br)Br AIFMYMZGQVTROK-UHFFFAOYSA-N 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- JHGCXUUFRJCMON-UHFFFAOYSA-J silicon(4+);tetraiodide Chemical class [Si+4].[I-].[I-].[I-].[I-] JHGCXUUFRJCMON-UHFFFAOYSA-J 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006557 surface reaction Methods 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
- 125000003944 tolyl group Chemical group 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
- RXJKFRMDXUJTEX-UHFFFAOYSA-N triethylphosphine Chemical compound CCP(CC)CC RXJKFRMDXUJTEX-UHFFFAOYSA-N 0.000 description 1
- WRTMQOHKMFDUKX-UHFFFAOYSA-N triiodide Chemical compound I[I-]I WRTMQOHKMFDUKX-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
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- H01L21/28556—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by chemical means, e.g. CVD, LPCVD, PECVD, laser CVD
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- 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
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- 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
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- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
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- H01L21/0262—Reduction or decomposition of gaseous compounds, e.g. CVD
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28556—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by chemical means, e.g. CVD, LPCVD, PECVD, laser CVD
- H01L21/28562—Selective deposition
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
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Description
該堆積工程が、前記ルテニウム領域上に約20Å〜約2,000Åの第1の厚さを含む第2層を提供し、前記銅領域上に約0〜約1,000Åの第2の厚さを含む第2層を提供し、該第1の厚さが該第2の厚さよりも大きい、第1層と第2層を含む多層基材を調製するための、上記のニーズの少なくとも1つを満足させる方法を提供する。
Xは酸素及びNR5から選択され、
R1、R2、R3及びR5はそれぞれ独立して水素原子、ハロゲン原子、式NO2を有するニトロ基、式CnH2n+1(式中、nは1〜20の数である)を有するアルキル、式CnHxFy(式中、(x+y)は(2n+1)に等しく、nは1〜20の数である)を有するフルオロアルキル、式(R6)3Si(式中、R6はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アルコキシ又はアミドである)を有するアルキルシラン、6〜12個の炭素原子を含むアリール基、6〜12個の炭素原子を含むアルキル置換のアリール、6〜12個の炭素原子を含むフルオロアルキル置換のアリール、6〜12個の炭素原子を含むフルオロアリール、式(CH2)nO(CmH2m+1)(式中、n及びmは独立して1〜20の数である)を有するエーテル、式(CnHxFy)O(CmHwFz)(式中、(x+y)=2n、(w+z)=(2m+1)であり、n及びmはそれぞれ独立して1〜20の数である)を有するフルオロエーテル、式(R7)3SiO(式中、R7はそれぞれ独立して1〜20個の炭素原子を含むアルキルであるか又は6〜12個の炭素原子を含むアリールである)を有するシリルエーテル、1〜20個の炭素原子を含むアルコキシ、及び1〜20個の炭素原子を含むアミドから選択され、
R4は、式CnH2n+1(式中、nは1〜20の数である)を有するアルキル、式CnHxFy(式中、(x+y)は(2n+1)に等しく、nは1〜20の数である)を有するフルオロアルキル、式(R6)3Si(式中、R6はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アルコキシ又はアミドである)を有するアルキルシラン、6〜12個の炭素原子を含むアリール、6〜12個の炭素原子を含むアルキル置換のアリール、6〜12個の炭素原子を含むフルオロアルキル置換のアリール、6〜12個の炭素原子を含むフルオロアリール、式(CH2)nO(CmH2m+1)(式中、n及びmは独立して1〜20の数である)を有するエーテル、式(CnHxFy)O(CmHwFz)(式中、(x+y)=2n、(w+z)=(2m+1)であり、n及びmはそれぞれ独立して1〜20の数である)を有するフルオロエーテル、式(R7)3SiO(式中、R7はそれぞれ独立して1〜20個の炭素原子を含むアルキル基であるか又は6〜12個の炭素原子を含むアリール基である)を有するシリルエーテル、1〜20個の炭素原子を含むアルコキシ、及び1〜20個の炭素原子を含むアミドから選択され、かつR4は、水素、原子又は基を取り去ることによってLと結合し、
Lは、2〜20個の炭素原子を含むアルキルニトリル、式(R8)3SiCN(式中、R8はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アルコキシ又はアミドである)を有するシリルニトリル、1〜20個の炭素原子を含むアルキン、式(R9)3SiCCR10(式中、R9はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アミド又はアルコキシであり、R10は水素、1〜20個の炭素原子を含むアルコキシ、アミド又はアルキルである)を有するシリルアルキン、式(R11)3SiCCSi(R11)3(式中、R11はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アミド又はアルコキシである)を有するシリルアルキン、1〜20個の炭素原子を含むアルケン、ジエン又はトリエン、式(R12)3SiCR13C(R13)2(式中、R12はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アルコキシ、アリール、ビニル又はアミドであり、R13はそれぞれ独立して水素、1〜20個の炭素原子を含むアルキル又は6〜12個の炭素原子を含むアリールである)を有するシリルアルケン、式(R14)3SiCR13CR13Si(R14)3(式中、R14はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アルコキシ又はアミドであり、R13はそれぞれ独立して水素原子又は1〜20個の炭素原子を含むアルキルである)を有するビス(シリル)アルケン、3〜20個の炭素を含むアレン、式(R15)2CCC(R15)2(式中、R15はそれぞれ独立して水素原子又は式(R16)3Si(式中、R16はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アミド又はアルコキシである)を有するアルキルシランである)を有するアレン、式R17NC(式中、R17は1〜20個の炭素原子を含むアルキルである)を有するアルキルイソシアニド、式(R18)3SiNC(式中、R18はそれぞれ独立して1〜20個の炭素原子を含むアルキルである)を有するシリルイソシアニド、及び6〜12個の炭素原子を含むアリール基から選択された配位子であり、かつLは、水素、原子又は基を取り去ることによってR4と結合し、
MとLの間の有機金属結合は2つの単結合及び1つの単結合から選択される。1つの特定の実施態様では、堆積工程の少なくとも一部は還元剤の存在下で実施される。
Cu(CF3C(O)CHC(NCH2CH2OSiMe2C2H3)CF3)、
Cu(CF3C(O)CHC(NCH2CH2OSiMe2C2H3)Me)、
Cu(CF3C(O)CHC(NCH2CH2NMeSiMe2C2H3)CF3)、
Cu(CF3C(O)CHC(NCH2CH2NMeSiMe2C2H3)Me)
Cu(CF3C(O)CHC(NCH2CHMeOSiMe2C2H3)CF3)、及び
Cu(CF3C(O)CHC(NCH2CHMeOSiMe2C2H3)Me)
が挙げられる。
(物理気相成長によって堆積され、純度が99.999%である)約200Å厚さの銅膜を有するシリコンウェハを3つの等しい試料片、即ち、C1、C2及びC3にカットした。銅前駆体Cu((CH2)3NCCHC(NCH2CH2OSiMe2C2H3)Me)試料2.0gをALD処理に適合した実験室規模の反応器である供給源容器に装入し、窒素下で密閉した。次いで容器の温度を90℃に調整した。ルテニウム基材試料R1及び銅試料C1をALD反応器のプロセスチャンバーに装入し、これらに純水素ガスを0.5Torrの圧力で20標準立方センチメートル毎分(sccm)の連続流量で通した。銅基材の表面に存在する如何なる天然の酸化銅も金属銅に還元するために、基材の温度を375℃に調整して連続流の純水素ガスで1時間保持した。
銅前駆体Cu(CF3C(O)CHC(NCH2CH2OSiMe2C2H3)CF3)を、PVD銅基材とともに4つの異なるルテニウム基材を装入するのと平行して、例1に記載したのと同じALD反応器に装入した。水素中で同じく375℃の予熱を用い、続いて150℃まで冷却し、次いで670のALDサイクルを開始することに加え、前駆体、窒素及び水素に関して上記と同じサイクル時間を用いてシステムを運転した。PVD銅上に銅の堆積は観察しなかったが、200Åの銅がルテニウム試料上に堆積していることをTEMによって観察した。
Claims (9)
- ルテニウム領域と銅領域を含む第1層を提供する工程と、
該第1層上に下記の式(Ia)を有する少なくとも1つの前駆体を用いて銅を含む第2層を堆積し多層基材を提供する堆積工程と
を含み、該堆積工程が、
前記ルテニウム領域上に20Å〜2,000Åの第1の厚さと、
前記銅領域上に該第1の厚さよりも少なくとも90%小さい第2の厚さと
を含む第2層を提供し、該第1の厚さが該第2の厚さよりも大きく、
該堆積工程の少なくとも一部が還元剤の存在下で実施される、第1層と第2層を含む多層基材を調製するための方法。
(式中、Mは銅であり、
R1、R2及びR3はそれぞれ独立して水素原子、ハロゲン原子、式NO2を有するニトロ基、式CnH2n+1(式中、nは1〜20の数である)を有するアルキル、式CnHxFy(式中、(x+y)は(2n+1)に等しく、nは1〜20の数である)を有するフルオロアルキル、式(R6)3Si(式中、R6はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アルコキシ又はアミドである)を有するアルキルシラン、6〜12個の炭素原子を含むアリール基、6〜12個の炭素原子を含むアルキル置換のアリール、6〜12個の炭素原子を含むフルオロアルキル置換のアリール、6〜12個の炭素原子を含むフルオロアリール、式(CH2)nO(CmH2m+1)(式中、n及びmは独立して1〜20の数である)を有するエーテル、式(CnHxFy)O(CmHwFz)(式中、(x+y)=2n、(w+z)=(2m+1)であり、n及びmはそれぞれ独立して1〜20の数である)を有するフルオロエーテル、式(R7)3SiO(式中、R7はそれぞれ独立して1〜20個の炭素原子を含むアルキルであるか又は6〜12個の炭素原子を含むアリールである)を有するシリルエーテル、1〜20個の炭素原子を含むアルコキシ、及び1〜20個の炭素原子を含むアミドから選択され、
R4は、式CnH2n+1(式中、nは1〜20の数である)を有するアルキル、式CnHxFy(式中、(x+y)は(2n+1)に等しく、nは1〜20の数である)を有するフルオロアルキル、式(R6)3Si(式中、R6はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アルコキシ又はアミドである)を有するアルキルシラン、6〜12個の炭素原子を含むアリール、6〜12個の炭素原子を含むアルキル置換のアリール、6〜12個の炭素原子を含むフルオロアルキル置換のアリール、6〜12個の炭素原子を含むフルオロアリール、式(CH2)nO(CmH2m+1)(式中、n及びmは独立して1〜20の数である)を有するエーテル、式(CnHxFy)O(CmHwFz)(式中、(x+y)=2n、(w+z)=(2m+1)であり、n及びmはそれぞれ独立して1〜20の数である)を有するフルオロエーテル、式(R7)3SiO(式中、R7はそれぞれ独立して1〜20個の炭素原子を含むアルキル基であるか又は6〜12個の炭素原子を含むアリール基である)を有するシリルエーテル、1〜20個の炭素原子を含むアルコキシ、及び1〜20個の炭素原子を含むアミドから選択され、かつR4は、水素、原子又は基を取り去ることによってLと結合し、
Lは、2〜20個の炭素原子を含むアルキルニトリル、式(R8)3SiCN(式中、R8はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アルコキシ又はアミドである)を有するシリルニトリル、1〜20個の炭素原子を含むアルキン、式(R9)3SiCCR10(式中、R9はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アミド又はアルコキシであり、R10は水素、1〜20個の炭素原子を含むアルコキシ、アミド又はアルキルである)を有するシリルアルキン、式(R11)3SiCCSi(R11)3(式中、R11はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アミド又はアルコキシである)を有するシリルアルキン、1〜20個の炭素原子を含むアルケン、ジエン又はトリエン、式(R12)3SiCR13C(R13)2(式中、R12はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アルコキシ、アリール、ビニル又はアミドであり、R13はそれぞれ独立して水素、1〜20個の炭素原子を含むアルキル又は6〜12個の炭素原子を含むアリールである)を有するシリルアルケン、式(R14)3SiCR13CR13Si(R14)3(式中、R14はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アルコキシ又はアミドであり、R13はそれぞれ独立して水素原子又は1〜20個の炭素原子を含むアルキルである)を有するビス(シリル)アルケン、3〜20個の炭素を含むアレン、式(R15)2CCC(R15)2(式中、R15はそれぞれ独立して水素原子又は式(R16)3Si(式中、R16はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アミド又はアルコキシである)を有するアルキルシランである)を有するアレン、式R17NC(式中、R17は1〜20個の炭素原子を含むアルキルである)を有するアルキルイソシアニド、式(R18)3SiNC(式中、R18はそれぞれ独立して1〜20個の炭素原子を含むアルキルである)を有するシリルイソシアニド、及び6〜12個の炭素原子を含むアリール基から選択された配位子であり、かつLは、水素、原子又は基を取り去ることによってR4と結合し、
MとLの間の有機金属結合は2つの単結合及び1つの単結合から選択される) - 前記還元剤が、アルコール、カルボン酸、水素ガス、水素プラズマ、遠隔水素プラズマ、シラン、ボラン、アラン、ゲルマン、ヒドラジン、アンモニア及びそれらの混合物から選択される少なくとも1つである、請求項1に記載の方法。
- R1、R2、R3及びR4のいずれか1つが結合して環状構造を形成する、請求項1又は2に記載の方法。
- ルテニウム領域と、銅領域とを含む第1層を提供する工程と、
該第1層上に少なくとも1つの銅前駆体を用いて銅を含む第2層を堆積し多層基材を提供する堆積工程と
を含み、該堆積工程が、
前記ルテニウム領域上に20Å〜2,000Åの第1の厚さと、
前記銅領域上に該第1の厚さよりも少なくとも90%小さい第2の厚さと
を含む第2層を提供し、
該堆積工程の少なくとも一部が還元剤の存在下で実施される、第1層と第2層を含む多層基材を調製するための方法。 - ルテニウム領域と銅領域を含む第1層を提供する工程と、
該第1層上に下記の式(Ib)を有する少なくとも1つの前駆体を用いて銅を含む第2層を堆積し多層基材を提供する堆積工程と
を含み、該堆積工程が、
前記ルテニウム領域上に20Å〜2,000Åの第1の厚さと、
前記銅領域上に該第1の厚さよりも少なくとも90%小さい第2の厚さと
を含む第2層を提供し、
該堆積工程の少なくとも一部が還元剤の存在下で実施される、第1層と第2層を含む多層基材を調製するための方法。
(式中、Xは酸素及びNR5から選択され、
R1、R2、R3及びR5はそれぞれ独立して水素原子、式CnH2n+1(式中、nは1〜20の数である)を有するアルキル、式CnHxFy(式中、(x+y)は(2n+1)に等しく、nは1〜20の数である)を有するフルオロアルキルから選択され、
R4は、式CnH2n+1(式中、nは1〜20の数である)を有するアルキル、1〜20個の炭素原子を含むアルコキシから選択され、かつR4は、水素、原子又は基を取り去ることによってLと結合し、
Lは、2〜20個の炭素原子を含むアルキルニトリル、式(R8)3SiCN(式中、R8はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アルコキシ又はアミドである)を有するシリルニトリル、1〜20個の炭素原子を含むアルキン、式(R9)3SiCCR10(式中、R9はそれぞれ独立してアルキルであり、R10は水素又は1〜20個の炭素原子を含むアルキルである)を有するシリルアルキン、式(R11)3SiCCSi(R11)3(式中、R11はそれぞれ独立して1〜20個の炭素原子を含むアルキルである)を有するシリルアルキン、1〜20個の炭素原子を含むアルケン、ジエン又はトリエン、式(R12)3SiCR13C(R13)2(式中、R12はそれぞれ独立して1〜20個の炭素原子を含むアルキル、アルコキシ、アリール、ビニル又はアミドであり、R13はそれぞれ独立して水素、1〜20個の炭素原子を含むアルキルである)を有するシリルアルケン、式(R14)3SiCR13CR13Si(R14)3(式中、R14はそれぞれ独立して1〜20個の炭素原子を含むアルキルであり、R13はそれぞれ独立して水素原子又は1〜20個の炭素原子を含むアルキルである)を有するビス(シリル)アルケン、及び3〜20個の炭素を含むアレンから選択された配位子であり、かつLは、水素、原子又は基を取り去ることによってR4と結合し、
CuとLの間の有機金属結合は2つの単結合及び1つの単結合から選択される) - X、R1、R2、R3及びR4のいずれか1つが結合して環状構造を形成する、請求項5に記載の方法。
- XとR1が結合して環状構造を形成する、請求項5に記載の方法。
- 前記還元剤が、アルコール、カルボン酸、水素ガス、水素プラズマ、遠隔水素プラズマ、シラン、ボラン、アラン、ゲルマン、ヒドラジン、アンモニア及びそれらの混合物から選択される少なくとも1つである、請求項5に記載の方法。
- 前記第2層の厚さが0である、請求項5に記載の方法。
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