JP7177209B2 - 有機アミノジシラン前駆体、及びそれを含む膜の堆積方法 - Google Patents
有機アミノジシラン前駆体、及びそれを含む膜の堆積方法 Download PDFInfo
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- JP7177209B2 JP7177209B2 JP2021069016A JP2021069016A JP7177209B2 JP 7177209 B2 JP7177209 B2 JP 7177209B2 JP 2021069016 A JP2021069016 A JP 2021069016A JP 2021069016 A JP2021069016 A JP 2021069016A JP 7177209 B2 JP7177209 B2 JP 7177209B2
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- 239000002243 precursor Substances 0.000 title claims description 185
- 238000000034 method Methods 0.000 title claims description 129
- 238000000151 deposition Methods 0.000 title claims description 74
- DSWDPPJBJCXDCZ-UHFFFAOYSA-N ctk0h9754 Chemical compound N[SiH2][SiH3] DSWDPPJBJCXDCZ-UHFFFAOYSA-N 0.000 title claims description 13
- 230000008569 process Effects 0.000 claims description 64
- 239000000758 substrate Substances 0.000 claims description 59
- 125000000217 alkyl group Chemical group 0.000 claims description 51
- 238000000231 atomic layer deposition Methods 0.000 claims description 45
- 238000005229 chemical vapour deposition Methods 0.000 claims description 44
- 238000010926 purge Methods 0.000 claims description 42
- 125000000041 C6-C10 aryl group Chemical group 0.000 claims description 38
- 229910007991 Si-N Inorganic materials 0.000 claims description 25
- 229910006294 Si—N Inorganic materials 0.000 claims description 25
- 125000003118 aryl group Chemical group 0.000 claims description 25
- 125000004122 cyclic group Chemical group 0.000 claims description 24
- 229910008045 Si-Si Inorganic materials 0.000 claims description 23
- 229910006411 Si—Si Inorganic materials 0.000 claims description 23
- 125000001931 aliphatic group Chemical group 0.000 claims description 23
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 12
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 11
- ANSYKGYLJJTCPH-UHFFFAOYSA-N N-butan-2-yl-N-(disilanyl)butan-2-amine Chemical group CCC(C)N([SiH2][SiH3])C(C)CC ANSYKGYLJJTCPH-UHFFFAOYSA-N 0.000 claims description 10
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 8
- CQXQGICGTOFIAG-UHFFFAOYSA-N CC1CCCC(C)N1[SiH2][SiH3] Chemical compound CC1CCCC(C)N1[SiH2][SiH3] CQXQGICGTOFIAG-UHFFFAOYSA-N 0.000 claims description 5
- 238000007740 vapor deposition Methods 0.000 claims description 4
- OXOZETZHAVYWSA-UHFFFAOYSA-N N-[cyclohexyl(silyl)silyl]propan-2-amine Chemical compound CC(C)N[SiH]([SiH3])C1CCCCC1 OXOZETZHAVYWSA-UHFFFAOYSA-N 0.000 claims 1
- STUGKIUJFPTJKE-UHFFFAOYSA-N N-tert-butyl-N-(disilanyl)-2-methylpropan-2-amine Chemical compound CC(C)(C)N([SiH2][SiH3])C(C)(C)C STUGKIUJFPTJKE-UHFFFAOYSA-N 0.000 claims 1
- 239000010408 film Substances 0.000 description 175
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 98
- 229910052710 silicon Inorganic materials 0.000 description 96
- 239000010703 silicon Substances 0.000 description 96
- 230000008021 deposition Effects 0.000 description 55
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 44
- 229910052760 oxygen Inorganic materials 0.000 description 44
- 239000001301 oxygen Substances 0.000 description 44
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 43
- 125000006575 electron-withdrawing group Chemical group 0.000 description 41
- 229910052739 hydrogen Inorganic materials 0.000 description 40
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 39
- 239000001257 hydrogen Substances 0.000 description 39
- 125000006619 (C1-C6) dialkylamino group Chemical group 0.000 description 38
- 229910052814 silicon oxide Inorganic materials 0.000 description 37
- 239000000203 mixture Substances 0.000 description 34
- 239000007789 gas Substances 0.000 description 33
- 238000006243 chemical reaction Methods 0.000 description 30
- 125000003342 alkenyl group Chemical group 0.000 description 24
- 125000000304 alkynyl group Chemical group 0.000 description 24
- 150000002431 hydrogen Chemical class 0.000 description 24
- 229910052757 nitrogen Inorganic materials 0.000 description 24
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 24
- 229910052751 metal Inorganic materials 0.000 description 22
- 239000002184 metal Substances 0.000 description 22
- 238000009835 boiling Methods 0.000 description 21
- 239000002904 solvent Substances 0.000 description 20
- GNZBDLMUHMACNZ-UHFFFAOYSA-N N-(disilanyl)-N-propan-2-ylpropan-2-amine Chemical compound CC(C)N([SiH2][SiH3])C(C)C GNZBDLMUHMACNZ-UHFFFAOYSA-N 0.000 description 19
- 125000006549 C4-C10 aryl group Chemical group 0.000 description 18
- 229910052581 Si3N4 Inorganic materials 0.000 description 17
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 17
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- -1 but not limited to Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 11
- 239000006227 byproduct Substances 0.000 description 11
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 10
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 9
- 125000003545 alkoxy group Chemical group 0.000 description 9
- 125000004432 carbon atom Chemical group C* 0.000 description 9
- 239000003638 chemical reducing agent Substances 0.000 description 9
- 238000005137 deposition process Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 9
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- 239000003153 chemical reaction reagent Substances 0.000 description 8
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 8
- 239000004065 semiconductor Substances 0.000 description 8
- 229910000077 silane Inorganic materials 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000000460 chlorine Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- IIEWJVIFRVWJOD-UHFFFAOYSA-N ethylcyclohexane Chemical compound CCC1CCCCC1 IIEWJVIFRVWJOD-UHFFFAOYSA-N 0.000 description 6
- 125000000524 functional group Chemical group 0.000 description 6
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000003960 organic solvent Substances 0.000 description 6
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical class [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 description 5
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 5
- 238000000560 X-ray reflectometry Methods 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 229910052740 iodine Inorganic materials 0.000 description 5
- 239000003446 ligand Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 125000001424 substituent group Chemical group 0.000 description 5
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 5
- 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
- WFNUAGZMSKASFQ-UHFFFAOYSA-N N-(disilanyl)-N-ethylethanamine Chemical compound CCN(CC)[SiH2][SiH3] WFNUAGZMSKASFQ-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 125000004429 atom Chemical group 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000012159 carrier gas Substances 0.000 description 4
- FXMNVBZEWMANSQ-UHFFFAOYSA-N chloro(silyl)silane Chemical compound [SiH3][SiH2]Cl FXMNVBZEWMANSQ-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 125000004663 dialkyl amino group Chemical group 0.000 description 4
- 239000002019 doping agent Substances 0.000 description 4
- 238000004817 gas chromatography Methods 0.000 description 4
- 125000004433 nitrogen atom Chemical group N* 0.000 description 4
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 4
- 150000003961 organosilicon compounds Chemical class 0.000 description 4
- 230000009257 reactivity Effects 0.000 description 4
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 235000012431 wafers Nutrition 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 150000004703 alkoxides Chemical class 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- JFDZBHWFFUWGJE-UHFFFAOYSA-N benzonitrile Chemical compound N#CC1=CC=CC=C1 JFDZBHWFFUWGJE-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- ZYLGGWPMIDHSEZ-UHFFFAOYSA-N dimethylazanide;hafnium(4+) Chemical compound [Hf+4].C[N-]C.C[N-]C.C[N-]C.C[N-]C ZYLGGWPMIDHSEZ-UHFFFAOYSA-N 0.000 description 3
- 150000002170 ethers Chemical class 0.000 description 3
- HOXINJBQVZWYGZ-UHFFFAOYSA-N fenbutatin oxide Chemical compound C=1C=CC=CC=1C(C)(C)C[Sn](O[Sn](CC(C)(C)C=1C=CC=CC=1)(CC(C)(C)C=1C=CC=CC=1)CC(C)(C)C=1C=CC=CC=1)(CC(C)(C)C=1C=CC=CC=1)CC(C)(C)C1=CC=CC=C1 HOXINJBQVZWYGZ-UHFFFAOYSA-N 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 3
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000004949 mass spectrometry Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 239000012686 silicon precursor Substances 0.000 description 3
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- LISDBLOKKWTHNH-UHFFFAOYSA-N 1,3,5-Trisilacyclohexan Natural products C1[SiH2]C[SiH2]C[SiH2]1 LISDBLOKKWTHNH-UHFFFAOYSA-N 0.000 description 2
- RXYPXQSKLGGKOL-UHFFFAOYSA-N 1,4-dimethylpiperazine Chemical compound CN1CCN(C)CC1 RXYPXQSKLGGKOL-UHFFFAOYSA-N 0.000 description 2
- PAMIQIKDUOTOBW-UHFFFAOYSA-N 1-methylpiperidine Chemical compound CN1CCCCC1 PAMIQIKDUOTOBW-UHFFFAOYSA-N 0.000 description 2
- DMSPFACBWOXIBX-UHFFFAOYSA-N 1-phenyl-N-silylmethanamine Chemical compound [SiH3]NCC1=CC=CC=C1 DMSPFACBWOXIBX-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000005046 Chlorosilane Substances 0.000 description 2
- WJIVAMBJMCBKAX-UHFFFAOYSA-N N-(disilanyl)-N-methylmethanamine Chemical compound CN(C)[SiH2][SiH3] WJIVAMBJMCBKAX-UHFFFAOYSA-N 0.000 description 2
- SFLARCZJKUXPCE-UHFFFAOYSA-N N-butan-2-yl-N-silylbutan-2-amine Chemical compound CCC(C)N([SiH3])C(C)CC SFLARCZJKUXPCE-UHFFFAOYSA-N 0.000 description 2
- BIVNKSDKIFWKFA-UHFFFAOYSA-N N-propan-2-yl-N-silylpropan-2-amine Chemical compound CC(C)N([SiH3])C(C)C BIVNKSDKIFWKFA-UHFFFAOYSA-N 0.000 description 2
- HKQQUUMRNMOVQK-UHFFFAOYSA-N N[SiH]([SiH3])Cl Chemical compound N[SiH]([SiH3])Cl HKQQUUMRNMOVQK-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 238000001069 Raman spectroscopy Methods 0.000 description 2
- 229910007264 Si2H6 Inorganic materials 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 239000005388 borosilicate glass Substances 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 2
- 229910052729 chemical element Inorganic materials 0.000 description 2
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical class Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 125000000058 cyclopentadienyl group Chemical group C1(=CC=CC1)* 0.000 description 2
- 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 2
- VJDVOZLYDLHLSM-UHFFFAOYSA-N diethylazanide;titanium(4+) Chemical compound [Ti+4].CC[N-]CC.CC[N-]CC.CC[N-]CC.CC[N-]CC VJDVOZLYDLHLSM-UHFFFAOYSA-N 0.000 description 2
- GOVWJRDDHRBJRW-UHFFFAOYSA-N diethylazanide;zirconium(4+) Chemical compound [Zr+4].CC[N-]CC.CC[N-]CC.CC[N-]CC.CC[N-]CC GOVWJRDDHRBJRW-UHFFFAOYSA-N 0.000 description 2
- DWCMDRNGBIZOQL-UHFFFAOYSA-N dimethylazanide;zirconium(4+) Chemical compound [Zr+4].C[N-]C.C[N-]C.C[N-]C.C[N-]C DWCMDRNGBIZOQL-UHFFFAOYSA-N 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- NPEOKFBCHNGLJD-UHFFFAOYSA-N ethyl(methyl)azanide;hafnium(4+) Chemical compound [Hf+4].CC[N-]C.CC[N-]C.CC[N-]C.CC[N-]C NPEOKFBCHNGLJD-UHFFFAOYSA-N 0.000 description 2
- LNKYFCABELSPAN-UHFFFAOYSA-N ethyl(methyl)azanide;titanium(4+) Chemical compound [Ti+4].CC[N-]C.CC[N-]C.CC[N-]C.CC[N-]C LNKYFCABELSPAN-UHFFFAOYSA-N 0.000 description 2
- SRLSISLWUNZOOB-UHFFFAOYSA-N ethyl(methyl)azanide;zirconium(4+) Chemical compound [Zr+4].CC[N-]C.CC[N-]C.CC[N-]C.CC[N-]C SRLSISLWUNZOOB-UHFFFAOYSA-N 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- DAZXVJBJRMWXJP-UHFFFAOYSA-N n,n-dimethylethylamine Chemical compound CCN(C)C DAZXVJBJRMWXJP-UHFFFAOYSA-N 0.000 description 2
- WMAAIGILTZEOHE-UHFFFAOYSA-N n-[bis(ethylamino)-[tris(ethylamino)silyl]silyl]ethanamine Chemical compound CCN[Si](NCC)(NCC)[Si](NCC)(NCC)NCC WMAAIGILTZEOHE-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 150000002825 nitriles Chemical class 0.000 description 2
- BKIMMITUMNQMOS-UHFFFAOYSA-N nonane Chemical compound CCCCCCCCC BKIMMITUMNQMOS-UHFFFAOYSA-N 0.000 description 2
- 239000003791 organic solvent mixture Substances 0.000 description 2
- 125000002524 organometallic group Chemical group 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- DFKWUUAUOWORTP-UHFFFAOYSA-N piperidin-1-yl(piperidin-1-ylsilyl)silane Chemical compound C1CCCCN1[SiH2][SiH2]N1CCCCC1 DFKWUUAUOWORTP-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 150000003335 secondary amines Chemical class 0.000 description 2
- 150000004756 silanes Chemical class 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 150000003512 tertiary amines Chemical class 0.000 description 2
- 125000001302 tertiary amino group Chemical group 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- LXEXBJXDGVGRAR-UHFFFAOYSA-N trichloro(trichlorosilyl)silane Chemical compound Cl[Si](Cl)(Cl)[Si](Cl)(Cl)Cl LXEXBJXDGVGRAR-UHFFFAOYSA-N 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- VOSJXMPCFODQAR-UHFFFAOYSA-N trisilylamine group Chemical group [SiH3]N([SiH3])[SiH3] VOSJXMPCFODQAR-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 238000005292 vacuum distillation Methods 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- BJNGFYSJWFVHAO-UHFFFAOYSA-N (2,5-dimethylpiperidin-1-yl)-silylsilane Chemical compound CC1N(CC(CC1)C)[SiH2][SiH3] BJNGFYSJWFVHAO-UHFFFAOYSA-N 0.000 description 1
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- 125000003282 alkyl amino group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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- LNENVNGQOUBOIX-UHFFFAOYSA-N azidosilane Chemical class [SiH3]N=[N+]=[N-] LNENVNGQOUBOIX-UHFFFAOYSA-N 0.000 description 1
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- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
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- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 125000004803 chlorobenzyl group Chemical group 0.000 description 1
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- 230000000052 comparative effect Effects 0.000 description 1
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- 125000006165 cyclic alkyl group Chemical group 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
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- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
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- VSLPMIMVDUOYFW-UHFFFAOYSA-N dimethylazanide;tantalum(5+) Chemical compound [Ta+5].C[N-]C.C[N-]C.C[N-]C.C[N-]C.C[N-]C VSLPMIMVDUOYFW-UHFFFAOYSA-N 0.000 description 1
- UBHZUDXTHNMNLD-UHFFFAOYSA-N dimethylsilane Chemical compound C[SiH2]C UBHZUDXTHNMNLD-UHFFFAOYSA-N 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000005530 etching Methods 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
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- KCWYOFZQRFCIIE-UHFFFAOYSA-N ethylsilane Chemical compound CC[SiH3] KCWYOFZQRFCIIE-UHFFFAOYSA-N 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
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- 239000012530 fluid Substances 0.000 description 1
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- 125000005843 halogen group Chemical group 0.000 description 1
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- HTDJPCNNEPUOOQ-UHFFFAOYSA-N hexamethylcyclotrisiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O1 HTDJPCNNEPUOOQ-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 238000004050 hot filament vapor deposition Methods 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material 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
- 125000004491 isohexyl group Chemical group C(CCC(C)C)* 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 1
- JJWLVOIRVHMVIS-UHFFFAOYSA-N isopropylamine Chemical compound CC(C)N JJWLVOIRVHMVIS-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000012705 liquid precursor Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- AUHZEENZYGFFBQ-UHFFFAOYSA-N mesitylene Substances CC1=CC(C)=CC(C)=C1 AUHZEENZYGFFBQ-UHFFFAOYSA-N 0.000 description 1
- 125000001827 mesitylenyl group Chemical group [H]C1=C(C(*)=C(C([H])=C1C([H])([H])[H])C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
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- 238000001465 metallisation Methods 0.000 description 1
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- CBXZGERYGLVXSG-UHFFFAOYSA-N methyl(2-methylsilylethyl)silane Chemical compound C[SiH2]CC[SiH2]C CBXZGERYGLVXSG-UHFFFAOYSA-N 0.000 description 1
- OKHRRIGNGQFVEE-UHFFFAOYSA-N methyl(diphenyl)silicon Chemical compound C=1C=CC=CC=1[Si](C)C1=CC=CC=C1 OKHRRIGNGQFVEE-UHFFFAOYSA-N 0.000 description 1
- DSKSAXYFIBWFLQ-UHFFFAOYSA-N methyl(methylsilylmethyl)silane Chemical compound C[SiH2]C[SiH2]C DSKSAXYFIBWFLQ-UHFFFAOYSA-N 0.000 description 1
- OFLMWACNYIOTNX-UHFFFAOYSA-N methyl(methylsilyloxy)silane Chemical compound C[SiH2]O[SiH2]C OFLMWACNYIOTNX-UHFFFAOYSA-N 0.000 description 1
- UIUXUFNYAYAMOE-UHFFFAOYSA-N methylsilane Chemical compound [SiH3]C UIUXUFNYAYAMOE-UHFFFAOYSA-N 0.000 description 1
- OIALYCJNSIXQJQ-UHFFFAOYSA-N methylsilyl(trimethylsilylcarbonylsilylmethylsilyl)methanone Chemical compound C[SiH2]C(=O)[SiH2]C[SiH2]C(=O)[Si](C)(C)C OIALYCJNSIXQJQ-UHFFFAOYSA-N 0.000 description 1
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- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 125000003506 n-propoxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000005244 neohexyl group Chemical group [H]C([H])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 125000003261 o-tolyl group Chemical group [H]C1=C([H])C(*)=C(C([H])=C1[H])C([H])([H])[H] 0.000 description 1
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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- 238000005086 pumping Methods 0.000 description 1
- 125000000168 pyrrolyl group Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013074 reference sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- OLRJXMHANKMLTD-UHFFFAOYSA-N silyl Chemical compound [SiH3] OLRJXMHANKMLTD-UHFFFAOYSA-N 0.000 description 1
- HVXTXDKAKJVHLF-UHFFFAOYSA-N silylmethylsilane Chemical compound [SiH3]C[SiH3] HVXTXDKAKJVHLF-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- MNWRORMXBIWXCI-UHFFFAOYSA-N tetrakis(dimethylamido)titanium Chemical compound CN(C)[Ti](N(C)C)(N(C)C)N(C)C MNWRORMXBIWXCI-UHFFFAOYSA-N 0.000 description 1
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 1
- XOAJIYVOSJHEQB-UHFFFAOYSA-N trimethyl trimethoxysilyl silicate Chemical compound CO[Si](OC)(OC)O[Si](OC)(OC)OC XOAJIYVOSJHEQB-UHFFFAOYSA-N 0.000 description 1
- PQDJYEQOELDLCP-UHFFFAOYSA-N trimethylsilane Chemical compound C[SiH](C)C PQDJYEQOELDLCP-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02205—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition
- H01L21/02208—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si
- H01L21/02211—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound being a silane, e.g. disilane, methylsilane or chlorosilane
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
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Description
式Iの特定の実施態様では、R1及びR2は、共に結合して環を形成する。1つの特定の実施態様では、R1及びR2は、直鎖又は分岐鎖のC3~C10のアルキル基から選択され、かつ結合して環を形成する。式Iの別の態様では、R1及びR2は、結合して環を形成しない。式Iの特定の態様では、R1及びR2は、それらがイソ-プロピルにならないという条件の下で、同じである。他の実施態様では、R1及びR2は、異なる。
ここに記載した組成物の特定の実施態様において、典型的な溶媒としては、限定されないが、エーテル、第三級アミン、アルキル炭化水素、芳香族炭化水素、第三級アミノエーテル、及びこれらの組合せが挙げられる。特定の実施態様では、有機アミノジシランの沸点と溶媒の沸点との差は、40℃以下である。
反応チャンバーに上記基材の上記少なくとも1つの表面を与える工程;及び
次の式Iで表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を用いて、化学気相成長プロセス及び原子層堆積プロセスから選択される堆積プロセスによって、上記少なくとも1つの表面に上記ケイ素含有膜を形成する工程:
1つの特定の実施態様では、R1及びR2は、同じである。他の実施態様では、R1及びR2は、異なる。上記実施態様又は他の実施態様において、共に結合して環を形成する。さらなる実施態様では、式Iの別の態様では、R1及びR2は、結合して環を形成しない。
a.基材を反応器に与える工程;
b.上記反応器に、次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を導入する工程:
c.上記反応器を、パージガスでパージする工程;
d.上記反応器に、酸素含有源を導入する工程;及び
e.上記反応器を、パージガスでパージする工程;
ここで、上記膜の所望の厚みが得られるまで、b~eの工程を繰り返す。
特定の実施態様では、R1及びR2は、同じである。他の実施態様では、R1及びR2は、異なる。上記実施態様又は他の実施態様において、共に結合して環を形成する。さらなる実施態様では、式Iの別の態様では、R1及びR2は、結合して環を形成しない。
a.基材を反応器に与える工程;
b.上記反応器に、次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を導入する工程:
c.酸素含有源を与えて、上記少なくとも1つの表面に上記膜を堆積する工程。
特定の実施態様では、R1及びR2は、同じである。他の実施態様では、R1及びR2は、異なる。上記実施態様又は他の実施態様において、共に結合して環を形成する。さらなる実施態様では、式Iの別の態様では、R1及びR2は、結合して環を形成しない。
a.基材を反応器に与える工程;
b.上記反応器に、次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を導入する工程:
c.上記反応器を、パージガスでパージする工程;
d.上記反応器に、窒素含有源を導入する工程;及び
e.上記反応器を、パージガスでパージする工程;
ここで、上記膜の所望の厚みが得られるまで、b~eの工程を繰り返す。
特定の実施態様では、R1及びR2は、同じである。他の実施態様では、R1及びR2は、異なる。上記実施態様又は他の実施態様において、共に結合して環を形成する。さらなる実施態様では、式Iの別の態様では、R1及びR2は、結合して環を形成しない。
a.基材を反応器に与える工程;
b.上記反応器に、次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体及び窒素含有源を導入する工程:
c.窒素含有源を与える工程であって、上記少なくとも1種の有機アミノジシラン前駆体と、上記窒素含有源とを反応させて、上記膜を上記少なくとも1つの表面に堆積させる工程。
特定の実施態様では、R1及びR2は、同じである。他の実施態様では、R1及びR2は、異なる。上記実施態様又は他の実施態様において、共に結合して環を形成する。さらなる実施態様では、式Iの別の態様では、R1及びR2は、結合して環を形成しない。
1以上の基材を反応器に配置し、これを周囲温度から約700℃の範囲の1以上の温度に加熱する工程;
次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を導入する工程:
還元剤源を上記反応器に与えて、上記少なくとも1種の有機アミノジシラン前駆体と少なくとも部分的に反応させて、そしてケイ素含有膜を上記1以上の基材に堆積させる工程。
この還元剤は、水素、水素プラズマ、塩化水素からなる群より選択される。このCVD法の特定の実施態様では、この反応器は、導入工程の間に、10mTorr~760Torrの範囲の圧力に維持される。上記の工程を、ここに記載した方法に関して1サイクルと定義し、所望の厚みの膜が得られるまで、この工程のサイクルを繰り返すことができる。特定の実施態様では、R1及びR2は、同じである。他の実施態様では、R1及びR2は、異なる。上記実施態様又は他の実施態様において、共に結合して環を形成する。さらなる実施態様では、式Iの別の態様では、R1及びR2は、結合して環を形成しない。
a.基材を反応器に与える工程;
b.上記反応器に、次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を導入する工程:
ここで、上記膜の所望の厚みが得られるまで、bの工程を繰り返す。
特定の実施態様では、上記膜の厚みは、1Å以上、1~10000Å、1~1000Å、又は1~100Åとなることができる。
n=2のさらなる1つの実施態様において、R1及びR1、R1及びR2、又はR2及びR2のいずれか1つ以上又は全てが結合して環を作ることができる。式Iの特定の実施態様では、R1及びR2は、それらが共にイソ-プロピルにはならないという条件で、同じである。他の実施態様では、R1及びR2は異なる。1つの実施態様では、R1及びR2は直鎖又は分岐鎖のC3~C6のアルキル基から選択され、かつ結合して環を形成する。さらなる実施態様では、R1及びR2は環を形成する結合をしない。
a.基材をALD反応器に与える工程;
b.上記ALD反応器に、次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を導入する工程:
c.上記少なくとも1種の有機アミノジシラン前駆体を、基材に化学吸着させる工程;
d.未吸着の上記少なくとも1種の有機アミノジシラン前駆体を、パージガスを用いてパージする工程;
e.窒素含有源を、加熱した上記基材上の前記有機アミノジシラン前駆体に与えて、上記吸着した少なくとも1種の有機アミノジシラン前駆体と反応させる工程;及び
f.随意に、あらゆる未反応の窒素含有源をパージ又は排気する工程。
a.基材を反応器に与える工程;
b.上記反応器に、次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体及び酸素を導入する工程:
c.上記反応器を、酸素と共にパージガスでパージする工程;
d.RFプラズマを適用する工程;
e.上記反応器を、パージガスでパージする工程、又は上記反応器を排気して反応副生成物を除去する工程;
ここで、上記膜の所望の厚みが得られるまで、b~eの工程を繰り返す。
a.基材を反応器に与える工程;
b.上記反応器に、次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を導入する工程:
c.上記少なくとも1種の有機アミノジシラン前駆体を、基材に化学吸着させる工程;
d.未吸着の上記少なくとも1種の有機アミノジシラン前駆体を、パージガスを用いてパージする工程;
e.酸素含有源を、加熱した上記基材上の上記有機アミノジシラン前駆体に与えて、上記吸着した少なくとも1種の有機アミノジシラン前駆体と反応させる工程;及び
f.随意に、あらゆる未反応の酸素含有源をパージ又は排気する工程。
a.基材を反応器に与える工程;
b.上記反応器に、次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体及び窒素含有源を導入する工程:
c.上記反応器を、上記窒素含有源と共にパージガスでパージする工程;
d.RFプラズマを適用する工程;及び
e.上記反応器をパージガスでパージして、又は上記反応器を排気して、未反応の有機アミノジシラン及び反応副生成物を除去する工程;
ここで、上記膜の所望の厚みが得られるまで、b~eの工程を繰り返す。
a.周囲温度から約700℃までの範囲の1点以上の温度に加熱した反応器に、1以上の基材を配置するステップ;
b.次の式Iで表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を導入するステップ:
c.酸素含有源を、上記反応器に与えて、上記少なくとも1種の有機アミノジシラン前駆体と少なくとも部分的に反応させ、そして上記1以上の基材にケイ素含有膜を堆積させるステップ。
このCVD法のある種の実施態様では、上記反応器を、上記導入工程の間に10mTorr~760Torrの範囲の圧力で維持する。ここ記載した方法に関して、上記の工程は1サイクルを構成し;このサイクルを、ケイ素含有膜の所望の厚みを得るまで繰り返すことができる。この実施態様又は他の実施態様において、本明細書に記載した方法の工程を、様々な順番で実行することができ、順次的に又は同時に(例えば、他の1つの工程の少なくとも一部の間に)実行でき、そしてこれらのあらゆる組合せで実行することができると理解される。前駆体及び酸素含有源又は窒素源を提供するそれぞれの工程を、それらを供給するための時間の持続時間を変えることによって実行して、生成するケイ素含有膜の化学量論的組成を変えることができる。ただし、ここでは、利用可能なケイ素に対して、常に酸素を化学量論量よりも少なくして用いる。
a.1以上の基材を反応器に配置し、これを周囲温度から約700℃の範囲の1以上の温度に加熱する工程;
b.次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を導入する工程:
c.還元剤源を上記反応器に与えて、上記少なくとも1種の有機アミノジシラン前駆体と少なくとも部分的に反応させて、そしてケイ素含有膜を1以上の基材に堆積させる工程。
還元剤は、水素、水素プラズマ、塩化水素からなる群より選択される。
このCVD法のある種の実施態様では、上記反応器を、上記導入工程の間に10mTorr~760Torrの範囲の圧力で維持する。ここに記載した方法に関して、上記の工程は1サイクルを構成し;このサイクルを、ケイ素含有膜の所望の厚みを得るまで繰り返すことができる。
a.1以上の基材を反応器に配置し、これを周囲温度から約700℃の範囲の1以上の温度に加熱する工程;
b.次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を導入する工程:
c.窒素含有源を、上記反応器に同時に与えて、上記少なくとも1種の有機アミノジシラン前駆体と少なくとも部分的に反応させ、そして上記1以上の基材にケイ素含有膜を堆積させるステップ。このCVD法のある種の実施態様では、上記反応器を、上記導入工程の間に10mTorr~760Torrの範囲の圧力で維持する。
a.基材を反応器に配置し、これを周囲温度から約700℃の範囲の温度に加熱する工程;
b.次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を導入する工程:
c.還元剤源を上記反応器に与えて、上記少なくとも1種の有機アミノシラン前駆体と少なくとも部分的に反応させて、そしてケイ素含有膜を1以上の基材に堆積させる工程、ここで還元剤は、水素、水素プラズマ、塩化水素からなる群より選択される。
ここに記載した方法に関して、上記の工程は1サイクルを構成し;このサイクルを、ケイ素含有膜の所望の厚みを得るまで繰り返すことができる。上記膜の所望の厚みは、1Å超、1~10000Åとなることができる。
a.基材を反応器に与える工程;
b.上記反応器に、次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を導入する工程:
c.上記反応器を、パージガスでパージする工程、
ここで、上記シリコン膜の所望の厚みが得られるまで、工程b及びcを繰り返す。
機械的撹拌器、コンデンサー、及び添加ロートを備えた3つ口丸底フラスコにおいて、1当量のモノクロロジシランのヘキサン溶液を、コールドバスを用いて-10℃に冷却した。撹拌しながら、2当量のイソ-プロピルアミンを、添加ロートから滴下して加えた。添加が完了した後に、反応混合物を室温まで温めた。この反応混合物を室温で2時間撹拌して、続いて濾過を行った。溶媒のヘキサンを濾液から蒸溜によって除去した。生成物であるジ-イソ-プロピルアミノジシランを、減圧蒸留によって得た。ガスクロマトグラフィ(GC)は、生成物が99%超の純度のジ-イソ-プロピルアミノジシラン(DIPADS)であることを示した[1H-NMR(500MHz,C7D8):δ=4.89(m、SiH2),3.31(t、SiH3),2.93(m、CHMe2),1.00(d、CHMe2)]。図1は、ジ-イソ-プロピルアミノジシランのTGA/DSCグラフを示しており、TGAは、この化合物が揮発性であることを示し、またDSCは、これが約157℃の沸点を有することを示している。
ジイソプロピルアミノジシラン(DIPADS)の約2.0mlのサンプルを、乾燥した不活性条件の下で、4つのステンレス鋼管に装填した。この管に蓋をして、ラボオーブンに置き、4日間80℃で加熱した。4つの加熱したサンプルを、GCで解析し、加熱していない参照サンプルに対しての劣化の程度を確認した。これらのサンプルは、加熱後に99.15%の平均純度を有しており、99.24%の初期純度に対して0.09%の平均劣化率を示しており、またDIPADSが、その優れた熱安定性に起因してケイ素含有膜堆積用の前駆体として適切であることを証明している。ジ-sec-ブチルアミノジシラン及び2,6-ジメチルピペリジノジシランの両方が、両方のケイ素原子の周りでDIPASと同じ化学的環境を有することから、同様の熱安定性を持つであろうことが予想される。
約2mlのジエチルアミノジシラン(DEADS)を、封止した2つのステンレス鋼管で80℃で3日間加熱した。加熱前後のサンプルのGC解析は、平均で4.4%の純度の低下を示した。ビス(ジエチルアミノ)ジシラン(ビス-DEADS)が、加熱の結果として3.0%まで生成した。ジシランを、GC-MSでも検出した。観察された劣化は、ジメチルアミノジシラン(DMADS)に関してAbediniら(Inorg. Chem. Vol 2, 608 (1963))によって報告されたものと、以下のように一致している。
2DEADS=ビス-DEADS+ジシラン
これは、DEADS及びDMADSの両方が、その不安定さに起因してケイ素含有膜を堆積するための前駆体として適切とはならない場合があることを示唆していると考えられる。
酸化ケイ素膜の原子層堆積を、ジ-イソ-プロピルアミノジシラン(DIPADS)を用いて行った。この堆積を、実験室スケールのALDプロセスツールで行った。この有機アミノジシラン前駆体を、55℃の原料温度で、そのチャンバーに気相で供給した。全てのガス(パージガス、酸素含有源ガス、及び反応物ガス)及び前駆体ラインを加熱して、それにより前駆体流が凝縮のない状態を確実にした。ガス及び前駆体流量を、高速で作動するALDダイヤフラムバルブで制御した。堆積で用いた基材は、12インチの長さのケイ素ストリップであった。基材温度を確認するために熱電対をサンプルホルダーに取り付けた。オゾンを酸素含有源ガスとして用いて堆積を行った。表4に堆積パラメーターを与える。
酸化ケイ素のALD堆積を、ASM Stellar 3000生産装置を用いて、300mmSiウェハー上に、DIPADS及びオゾンプラズマプロセスから行った。前駆体を、Arキャリアガスを用いて室温で供給する。酸素を、プロセス中で連続的に流して堆積時間を短くする。堆積温度を、30℃及び100℃に設定する。前駆体ラインを加熱して前駆体の凝縮を防いだ。チャンバーの圧力は、堆積の間3Torrにする。堆積の各工程及び堆積パラメーターを表7に与える。
ケイ素含有膜のALD堆積を、ASM Stellar 3000生産装置を用いて、300mmSiウェハー上に、DIPADS及び窒素-水素プラズマプロセスから行った。前駆体を、Arキャリアガスを用いて室温で供給した。堆積温度を、300℃に設定した。前駆体ラインを加熱して前駆体の凝縮を防いだ。チャンバーの圧力を、堆積の間3Torrにした。堆積の各工程及び堆積パラメーターを表9に与える。
ケイ素含有膜を、PMADS及びオゾンを用いて、サイクリック化学気相成長モードで堆積させた。堆積の各工程は、以下の表11に示すとおりであり、堆積温度は300℃であった。
Claims (7)
- 以下の工程を含む、気相成長でアモルファスシリコン膜又は結晶性シリコン膜を堆積する方法:
a.反応器に基材を与える工程;
b.前記反応器に、次の式Iによって表されるSi-N結合、Si-Si結合、及びSi-H3基を有する少なくとも1種の有機アミノジシラン前駆体を導入する工程:
c.パージガスを用いて前記反応器をパージする、又は前記反応器を排気する工程、
ここで、所望の厚みの前記膜が得られるまで、前記工程b~cを繰り返す。 - 前記気相成長が、化学気相成長、低圧気相成長、プラズマ化学気相成長、サイクリック化学気相成長、プラズマサイクリック化学気相成長、原子層堆積、及びプラズマ原子層堆積からなる群より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。
- 原子層堆積プロセスである、請求項1に記載の方法。
- プラズマサイクリック化学気相成長プロセスである、請求項1に記載の方法。
- 前記少なくとも1種の有機アミノジシラン前駆体が、ジ-sec-ブチルアミノジシラン、ジ-tert-ブチルアミノジシラン、2,6-ジメチルピペリジノジシラン、シクロヘキシル-イソ-プロピルアミノジシラン、及びジ-シクロヘキシルアミノジシランからなる群より選択される、請求項1~4のいずれか一項に記載の方法。
- 前記少なくとも1種の有機アミノジシラン前駆体が、ジ-sec-ブチルアミノジシランを含む、請求項5に記載の方法。
- 前記少なくとも1種の有機アミノジシラン前駆体が、2,6-ジメチルピペリジノジシランを含む、請求項5に記載の方法。
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