JP3954577B2 - ケイ素含有膜を付着させるための前駆体およびそのプロセス - Google Patents
ケイ素含有膜を付着させるための前駆体およびそのプロセス Download PDFInfo
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- JP3954577B2 JP3954577B2 JP2004015984A JP2004015984A JP3954577B2 JP 3954577 B2 JP3954577 B2 JP 3954577B2 JP 2004015984 A JP2004015984 A JP 2004015984A JP 2004015984 A JP2004015984 A JP 2004015984A JP 3954577 B2 JP3954577 B2 JP 3954577B2
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- Prior art keywords
- dimethylhydrazino
- tris
- bis
- silane
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims description 71
- 230000008569 process Effects 0.000 title claims description 68
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims description 31
- 229910052710 silicon Inorganic materials 0.000 title claims description 31
- 239000010703 silicon Substances 0.000 title claims description 31
- 238000000151 deposition Methods 0.000 title description 55
- 239000002243 precursor Substances 0.000 title description 33
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 86
- 229910021529 ammonia Inorganic materials 0.000 claims description 43
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 43
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 41
- 239000007983 Tris buffer Substances 0.000 claims description 36
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 34
- DVHMVRMYGHTALQ-UHFFFAOYSA-N silylhydrazine Chemical compound NN[SiH3] DVHMVRMYGHTALQ-UHFFFAOYSA-N 0.000 claims description 32
- 238000006243 chemical reaction Methods 0.000 claims description 28
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 23
- 229910000077 silane Inorganic materials 0.000 claims description 23
- 238000005229 chemical vapour deposition Methods 0.000 claims description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 18
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- KCWYOFZQRFCIIE-UHFFFAOYSA-N ethylsilane Chemical compound CC[SiH3] KCWYOFZQRFCIIE-UHFFFAOYSA-N 0.000 claims description 11
- -1 dimethylhydrazino Chemical group 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- DNAJDTIOMGISDS-UHFFFAOYSA-N prop-2-enylsilane Chemical compound [SiH3]CC=C DNAJDTIOMGISDS-UHFFFAOYSA-N 0.000 claims description 10
- YYVGYULIMDRZMJ-UHFFFAOYSA-N propan-2-ylsilane Chemical compound CC(C)[SiH3] YYVGYULIMDRZMJ-UHFFFAOYSA-N 0.000 claims description 10
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 8
- 150000001412 amines Chemical class 0.000 claims description 7
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 6
- KNSVRQSOPKYFJN-UHFFFAOYSA-N tert-butylsilicon Chemical compound CC(C)(C)[Si] KNSVRQSOPKYFJN-UHFFFAOYSA-N 0.000 claims description 6
- JHPPXVFERKMZJA-UHFFFAOYSA-N 1-N,1-N,3-N,3-N,5-N,5-N-hexamethyl-1,3,5,2,4,6-triazatrisilinane-1,3,5-triamine Chemical compound CN(C)N1[SiH2]N(N(C)C)[SiH2]N(N(C)C)[SiH2]1 JHPPXVFERKMZJA-UHFFFAOYSA-N 0.000 claims description 5
- 238000000231 atomic layer deposition Methods 0.000 claims description 5
- WGGQTCUOCJKTRX-UHFFFAOYSA-N butan-2-ylsilicon Chemical compound CCC(C)[Si] WGGQTCUOCJKTRX-UHFFFAOYSA-N 0.000 claims description 5
- UIUXUFNYAYAMOE-UHFFFAOYSA-N methylsilane Chemical compound [SiH3]C UIUXUFNYAYAMOE-UHFFFAOYSA-N 0.000 claims description 5
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 5
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 claims description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 2
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims description 2
- XTWKHDSVKYFUOR-UHFFFAOYSA-N CN(C)N1[SiH2]N([SiH2]N([SiH2]N([SiH2]1)N(C)C)N(C)C)N(C)C Chemical compound CN(C)N1[SiH2]N([SiH2]N([SiH2]N([SiH2]1)N(C)C)N(C)C)N(C)C XTWKHDSVKYFUOR-UHFFFAOYSA-N 0.000 claims 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 3
- 125000000717 hydrazino group Chemical group [H]N([*])N([H])[H] 0.000 claims 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 60
- 230000008021 deposition Effects 0.000 description 52
- 239000010408 film Substances 0.000 description 49
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 31
- 235000012431 wafers Nutrition 0.000 description 31
- RHUYHJGZWVXEHW-UHFFFAOYSA-N 1,1-Dimethyhydrazine Chemical compound CN(C)N RHUYHJGZWVXEHW-UHFFFAOYSA-N 0.000 description 18
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 18
- 230000015572 biosynthetic process Effects 0.000 description 15
- 239000000376 reactant Substances 0.000 description 15
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 14
- 239000007789 gas Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 13
- 239000012299 nitrogen atmosphere Substances 0.000 description 12
- 239000011541 reaction mixture Substances 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 11
- 239000000243 solution Substances 0.000 description 11
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 10
- 239000004065 semiconductor Substances 0.000 description 10
- ANEOQSDZHUAKPH-UHFFFAOYSA-N 2-[(2,2-dimethylhydrazinyl)-ethylsilyl]-1,1-dimethylhydrazine Chemical compound CN(C)N[SiH](CC)NN(C)C ANEOQSDZHUAKPH-UHFFFAOYSA-N 0.000 description 9
- 239000007787 solid Substances 0.000 description 9
- 238000003786 synthesis reaction Methods 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 8
- 235000019270 ammonium chloride Nutrition 0.000 description 7
- 238000009835 boiling Methods 0.000 description 7
- 238000011109 contamination Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 7
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical class [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 7
- 238000006557 surface reaction Methods 0.000 description 7
- 239000000460 chlorine Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000007740 vapor deposition Methods 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 229910007991 Si-N Inorganic materials 0.000 description 5
- 229910006294 Si—N Inorganic materials 0.000 description 5
- 150000007513 acids Chemical class 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000003989 dielectric material Substances 0.000 description 5
- 238000004821 distillation Methods 0.000 description 5
- 238000005001 rutherford backscattering spectroscopy Methods 0.000 description 5
- 150000004756 silanes Chemical class 0.000 description 5
- 238000005292 vacuum distillation Methods 0.000 description 5
- 239000005046 Chlorosilane Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 238000001994 activation Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 4
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical class Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 150000004767 nitrides Chemical class 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229910018540 Si C Inorganic materials 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000005137 deposition process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 239000003446 ligand Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000005979 thermal decomposition reaction Methods 0.000 description 3
- DIIIISSCIXVANO-UHFFFAOYSA-N 1,2-Dimethylhydrazine Chemical compound CNNC DIIIISSCIXVANO-UHFFFAOYSA-N 0.000 description 2
- OZPKQCRMNJXCGZ-UHFFFAOYSA-N 2-[(2,2-dimethylhydrazinyl)-methylsilyl]-1,1-dimethylhydrazine Chemical compound CN(C)N[SiH](C)NN(C)C OZPKQCRMNJXCGZ-UHFFFAOYSA-N 0.000 description 2
- WSEZIRYWIYEDEK-UHFFFAOYSA-N 2-[bis(2,2-dimethylhydrazinyl)-ethylsilyl]-1,1-dimethylhydrazine Chemical compound CN(C)N[Si](CC)(NN(C)C)NN(C)C WSEZIRYWIYEDEK-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical class B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- UCXUKTLCVSGCNR-UHFFFAOYSA-N diethylsilane Chemical compound CC[SiH2]CC UCXUKTLCVSGCNR-UHFFFAOYSA-N 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 238000000572 ellipsometry Methods 0.000 description 2
- 238000010574 gas phase reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- ZOYFEXPFPVDYIS-UHFFFAOYSA-N trichloro(ethyl)silane Chemical compound CC[Si](Cl)(Cl)Cl ZOYFEXPFPVDYIS-UHFFFAOYSA-N 0.000 description 2
- FRDLVDRCNYUZPN-UHFFFAOYSA-N 2-[tert-butyl-bis(2,2-dimethylhydrazinyl)silyl]-1,1-dimethylhydrazine Chemical group CN(C)N[Si](NN(C)C)(NN(C)C)C(C)(C)C FRDLVDRCNYUZPN-UHFFFAOYSA-N 0.000 description 1
- VUGMARFZKDASCX-UHFFFAOYSA-N 2-methyl-N-silylpropan-2-amine Chemical compound CC(C)(C)N[SiH3] VUGMARFZKDASCX-UHFFFAOYSA-N 0.000 description 1
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 238000001157 Fourier transform infrared spectrum Methods 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- UMVBXBACMIOFDO-UHFFFAOYSA-N [N].[Si] Chemical group [N].[Si] UMVBXBACMIOFDO-UHFFFAOYSA-N 0.000 description 1
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 125000002015 acyclic group Chemical group 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000001505 atmospheric-pressure chemical vapour deposition Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- LNENVNGQOUBOIX-UHFFFAOYSA-N azidosilane Chemical class [SiH3]N=[N+]=[N-] LNENVNGQOUBOIX-UHFFFAOYSA-N 0.000 description 1
- 229910000085 borane Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- VPZDAHBNTYZYHC-UHFFFAOYSA-N chlorosilylamine Chemical compound N[SiH2]Cl VPZDAHBNTYZYHC-UHFFFAOYSA-N 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- KTQYJQFGNYHXMB-UHFFFAOYSA-N dichloro(methyl)silicon Chemical compound C[Si](Cl)Cl KTQYJQFGNYHXMB-UHFFFAOYSA-N 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000005048 methyldichlorosilane Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- VYIRVGYSUZPNLF-UHFFFAOYSA-N n-(tert-butylamino)silyl-2-methylpropan-2-amine Chemical compound CC(C)(C)N[SiH2]NC(C)(C)C VYIRVGYSUZPNLF-UHFFFAOYSA-N 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920001709 polysilazane Polymers 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009790 rate-determining step (RDS) Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 241000894007 species Species 0.000 description 1
- MOOUPSHQAMJMSL-UHFFFAOYSA-N tert-butyl(trichloro)silane Chemical compound CC(C)(C)[Si](Cl)(Cl)Cl MOOUPSHQAMJMSL-UHFFFAOYSA-N 0.000 description 1
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 description 1
- UNWUYTNKSRTDDC-UHFFFAOYSA-N tert-butylsilane Chemical compound CC(C)(C)[SiH3] UNWUYTNKSRTDDC-UHFFFAOYSA-N 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 238000007725 thermal activation Methods 0.000 description 1
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- GBXOGFTVYQSOID-UHFFFAOYSA-N trichloro(2-methylpropyl)silane Chemical compound CC(C)C[Si](Cl)(Cl)Cl GBXOGFTVYQSOID-UHFFFAOYSA-N 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
- 239000012808 vapor phase Substances 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
- H01L21/02219—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound comprising silicon and nitrogen
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/10—Compounds having one or more C—Si linkages containing nitrogen having a Si-N linkage
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/308—Oxynitrides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
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Description
i)シランおよびジクロロシランは自然発火性、毒性のある圧縮ガスであること;及び
ii)ジクロロシランから形成される膜は、例えば塩素および塩化アンモニウムのような副生成物として形成される汚染物を有すること。
1)該前駆体はN−メチル基を含有するが、このメチル基はシリコン表面に容易に移行する傾向があり、CVDプロセス中に膜を炭素で汚染させる。炭素の量を低減するために、該プロセスは高温(>700℃)および高アンモニア比(>10:1)を伴う。アンモニア比が増大すると、反応物欠乏に起因して蒸着速度が劇的に低下する。
2)該前駆体はN−H結合を含有せず、第2級シラン類を含まない。
3)低温では蒸着速度および均一性が非常に不良である(>5%)。
[R1 2N−NH]nSi(R2)4-n
[R1 2N−NH]nSi(R2)4-n
1)ヒドラジノシラン類は非自然発火性、揮発性の安定な液体であるか又は低融点で揮発性の固体である。
2)ヒドラジノシラン類はその分子中に塩素を含有しない。これに対し、ジクロロシランのSi−Cl結合は、塩化アンモニウムの生成を招き、これがチューブのバックエンドで又は単一ウェハ反応器の壁で付着し、頻繁なクリーニングを必要とする。
3)得られる窒化ケイ素膜は、ラザフォード散乱分光測定により示されるように、比較的に炭素を含まない。
4)ヒドラジノシラン類は優れた付着均一性を与える。
5)ジアミノ、ジメチルアミノおよび他のアルキルアミン類を配位子とするシラン類のような他の利用可能な前駆体を用いる場合に比べて、ヒドラジノシラン前駆体を用いる場合には、蒸着温度を150〜300℃低くすることができる。
1)反応物が反応室に導入され、必要に応じ、場合により、不活性ガスで希釈される;
2)反応物が基板に拡散させられる;
3)反応物が基板上で吸着され、吸着された分子が移動(migration)を受ける;および
4)表面上で化学反応が起こり、付着された膜を残して、反応のガス状副生成物が脱離する。反応は幾つかの方法、例えば熱または光子により開始される。LPCVDプロセスでは熱エネルギーが用いられる。
2つの添加漏斗、凝縮器およびメカニカルスターラを備えた2000mlの3首丸底フラスコに、ヘキサン500mlおよびトリエチルアミン303gを加えた。アイスバスにより冷却し、窒素雰囲気により保護しながら、ヘキサン100ml中のメチルジクロロシラン115gの溶液およびヘキサン50ml中の1,1−ジメチルヒドラジン150gの溶液を、2つの添加漏斗により、ほぼ等しい速度で添加した。次に、その反応混合物を室温まで温め、一晩攪拌した。窒素雰囲気中で、反応混合物を濾過し、固形アミン塩をヘキサンで洗浄した。溶媒および余分アミン類を減圧蒸留により除去した。減圧蒸留により、ビス(1,1−ジメチルヒドラジノ)メチルシラン125g、沸点45℃/22トル(2.8kPa)が得られた。
2つの添加漏斗、凝縮器およびメカニカルスターラを備えた5000mlの3首丸底フラスコに、ヘキサン1500mlおよびトリエチルアミン450gを加えた。アイスバスにより冷却し、窒素雰囲気により保護しながら、ヘキサン500ml中のエチルトリクロロシラン200gの溶液および1,1−ジメチルヒドラジン196gを、2つの添加漏斗により、ほぼ等しい速度で添加した。次に、その反応混合物を室温まで温め、一晩攪拌した。窒素雰囲気中で、反応混合物を濾過し、固形アミン塩をヘキサンで洗浄した。溶媒および余分アミン類を減圧蒸留により除去した。減圧蒸留により、ビス(1,1−ジメチルヒドラジノ)エチルシラン154g、沸点40℃/10トル(1.3kPa)が得られた。
2つの添加漏斗、凝縮器およびメカニカルスターラを備えた2000mlの3首丸底フラスコに、ヘキサン800mlおよびトリエチルアミン125gを加えた。アイスバスにより冷却し、窒素雰囲気により保護しながら、ヘキサン100ml中のt−ブチルトリクロロシラン48gの溶液およびヘキサン100ml中の1,1−ジメチルヒドラジン50gの溶液を、2つの添加漏斗により、ほぼ等しい速度で添加した。次に、その反応混合物を室温まで温め、一晩攪拌した。窒素雰囲気中で、反応混合物を濾過し、固形アミン塩をヘキサンで洗浄した。溶媒および余分アミン類を減圧蒸留により除去した。減圧蒸留により、トリス(1,1−ジメチルヒドラジノ)−t−ブチルシラン30g、沸点56℃/2トル(0.27kPa)が得られた。1H NMR:1.19(s,9H),2.34(s,18H)。
2つの添加漏斗、凝縮器およびメカニカルスターラを備えた5000mlの3首丸底フラスコに、ヘキサン1500mlおよびトリエチルアミン400gを加えた。アイスバスにより冷却し、窒素雰囲気により保護しながら、ヘキサン200ml中のイソ−ブチルトリクロロシラン200gの溶液および1,1−ジメチルヒドラジン240gを、2つの添加漏斗により、ほぼ等しい速度で添加した。次に、その反応混合物を室温まで温め、一晩攪拌した。窒素雰囲気中で、反応混合物を濾過し、固形アミン塩をヘキサンで洗浄した。溶媒および余分アミン類を減圧蒸留により除去した。減圧蒸留により、トリス(1,1−ジメチルヒドラジノ)−イソ−ブチルシラン170g、沸点61℃/2トル(0.27kPa)が得られた。
2つの添加漏斗、凝縮器およびメカニカルスターラを備えた5000mlの3首丸底フラスコに、ヘキサン2000mlおよびトリエチルアミン500gを加えた。アイスバスにより冷却し、窒素雰囲気により保護しながら、ヘキサン100ml中のエチルトリクロロシラン190gの溶液および1,1−ジメチルヒドラジン290gを、2つの添加漏斗により、ほぼ等しい速度で添加した。次に、その反応混合物を室温まで温め、一晩攪拌した。窒素雰囲気中で、反応混合物を濾過し、固形アミン塩をヘキサンで洗浄した。溶媒および余分アミン類を減圧蒸留により除去した。減圧蒸留により、トリス(1,1−ジメチルヒドラジノ)エチルシラン153g、沸点51℃/2トル(0.27kPa)が得られた。
2つの添加漏斗、凝縮器およびメカニカルスターラを備えた5000mlの3首丸底フラスコに、ヘキサン2000mlおよび1,1−ジメチルヒドラジン600gを加えた。ドライアイスバスにより冷却し、窒素雰囲気により保護しながら、ヘキサン350ml中の四塩化ケイ素170gの溶液を、ゆっくりと添加した。次に、その反応混合物を室温まで温め、一晩攪拌した。窒素雰囲気中で、反応混合物を濾過し、固形塩をヘキサンで洗浄した。減圧下で溶媒を部分的に除去し、溶液を約1リットルの量まで濃縮した。溶液から固体が沈殿し始めると、その溶液を冷蔵庫に入れた。固形生成物を濾過し、減圧下で乾燥した。テトラキス(1,1−ジメチルヒドラジノ)シラン185gが得られた。融点63℃。
本プロセスは、LPCVD条件(20ミリトル〜2トル(2.7Pa〜270Pa)の低圧力範囲)の下、トリス(ジメチルヒドラジノ)−t−ブチルシラン(TDMHtBS)の熱分解、または該前駆体とアンモニアとの反応を伴う。該前駆体およびアンモニア(または窒素希釈剤)を、加熱された反応器(200〜800℃)内に、そのドアに設けられたインジェクタにより導入した。該反応物を、排気した反応室のウェハ上に流した。アンモニア(または窒素)/ケイ素源は、1:1〜10:1の範囲の比で維持した。シリコンウェハ表面上に窒化ケイ素の連続膜が付着した。これらの膜は集積回路製造用に適したものである。一般の実験は150mmホットウォールLPCVD横型管反応器内で行ったが、装置構成は決定的でない。本プロセスは、石英反応器に75〜100のシリコンウェハを装填すること;系を排気すること;ウェハを蒸着が行われる所望の温度にすることを含む。本反応に必要なエネルギーは、単に抵抗加熱法により供給することができる。このことは、設備が安価になる点、およびプラズマ反応器で多くの場合に見られる照射による膜損傷(radiative film damage)を回避できる点で有利である。
本プロセスは、例7のプロセスと同様のLPCVD条件(20ミリトル〜2トル(2.7Pa〜270Pa)の低圧力範囲)の下、トリス(ジメチルヒドラジノ)エチルシラン(TDMHES)の熱分解またはアンモニアとの反応を伴う。一般の実験は500℃および400ミリトル(53Pa)で60sccm NH3とともに30sccmのTDMHESを流した。80ウェハの平均蒸着速度は20Å/分であった。RBS分析は、これらの膜がMEMS用途のため低応力窒化物を得るための前提条件であるケイ素豊富(silicon rich)であることを示した。
本プロセスは、例7のプロセスと同様のLPCVD条件(20ミリトル〜2トル(2.7Pa〜270Pa)の低圧力範囲)の下、ビス(ジメチルヒドラジノ)メチルシラン(BDMHMS)の熱分解またはアンモニアとの反応を伴う。一般の実験は500℃および500ミリトル(67Pa)で120sccm N2とともに70sccmのBDMHMSを流した。80ウェハの平均蒸着速度は8.5Å/分であった。FT−IR分析は、これらの膜が、870cm-1 にSi−N伸縮をもち、低密度であり、窒素豊富であることを示した。
本プロセスは、例7のプロセスと同様のLPCVD条件(20ミリトル〜2トル(2.7Pa〜270Pa)の低圧力範囲)の下、ビス(ジメチルヒドラジノ)エチルシラン(BDMHES)の熱分解またはアンモニアとの反応を伴う。一般の実験は500℃および400ミリトル(53Pa)で60sccm NH3とともに34sccmのBDMHESを流した。80ウェハの平均蒸着速度は11.5Å/分であった。RBS分析は、これらの膜が窒化ケイ素であることを示した。偏光解析法は、これらの蒸着膜が時間経過とともに実質的に変化しない1.75の屈折率をもった低〜中密度のものであることを示した。温度の逆数に対する蒸着速度の追加的なデータを、アミノシラン類を用いた蒸着結果と比較して、図1に示す。
本プロセスは、単一ウェハプラズマ反応器内でのビス(ジメチルヒドラジノ)エチルシラン(BDMHES)およびアンモニアを用いたプラズマ助長化学蒸着を伴う。一般の実験は420℃および1000ミリトル(130Pa)で300sccm NH3とともに7sccmのBDMHESを流した。平均RF出力2.2ワット/cm2 の場合に、平均蒸着速度は85Å/分であり、屈折率は1.92であった。FT−IRは、これらの蒸着膜が860cm-1 にSi−N伸縮をもち、高密度のものであることを示した。370℃および420℃の名目温度での蒸着についての追加的データを図5に示す。
本プロセスは、ビス(ジメチルヒドラジノ)エチルシラン(BDMHES)およびアンモニアを用いた単一ウェハ反応器内での低圧化学蒸着を伴う。一般の実験は370℃および2000ミリトル(270Pa)で11sccm NH3とともに5.5sccmのBDMHESを流した。平均蒸着速度は15Å/分であり、屈折率は1.73であった。FT−IRは、これらの蒸着膜が872cm-1 にSi−N伸縮をもち、中〜低密度のものであることを示した。
2トル(270Pa)および8トル(1.1kPa)のプロセス圧力で単一ウェハ反応器内での本化合物(「F」)についての追加的な蒸着データを図6に示す。
Claims (30)
- 次式のヒドラジノシランを用いる、基板上での窒化ケイ素、酸化ケイ素及び酸窒化ケイ素から成る群から選択される物質の化学蒸着プロセス:
[R1 2N−NH]nSi(R2)4-n
[式中、各R1は独立してC1〜C6のアルキル基より選択され;各R2は独立して水素、アルキル基、ビニル基、アリル基およびフェニル基から成る群より選択され;n=1〜4である]。 - ヒドラジノシランが、ビス(1,1−ジメチルヒドラジノ)メチルシラン、トリス(1,1−ジメチルヒドラジノ)シラン、トリス(1,1−ジメチルヒドラジノ)t−ブチルシラン、トリス(1,1−ジメチルヒドラジノ)s−ブチルシラン、トリス(1,1−ジメチルヒドラジノ)エチルシラン、ビス(1,1−ジメチルヒドラジノ)エチルシラン、ビス(1,1−ジメチルヒドラジノ)イソ−プロピルシラン、ビス(1,1−ジメチルヒドラジノ)アリルシラン、ビス(1,1−ジメチルヒドラジノ)シラン、テトラキス(1,1−ジメチルヒドラジノ)シラン、N,N' ,N''−トリス(ジメチルアミノ)シクロトリシラザン、N,N' ,N'',N''' −テトラキス(ジメチルアミノ)シクロテトラシラザン、トリス(1,1−ジメチルヒドラジノ)イソ−プロピルシラン、トリス(1,1−ジメチルヒドラジノ)アリルシランおよびこれらの混合物から成る群より選択される、請求項1に記載のプロセス。
- 基板の温度が100〜800℃の範囲にある、請求項1に記載のプロセス。
- 圧力が10-5 トル〜760トル(1.3mPa〜101kPa)の範囲にある、請求項1に記載のプロセス。
- ヒドラジノシランが、窒素、アンモニア、ヒドラジン、アミン類およびこれらの混合物から成る群より選択される窒素源と反応される、請求項1に記載のプロセス。
- アンモニア/ヒドラジノシランのモル比をゼロ以上にすることができる、請求項5に記載のプロセス。
- 基板がシリコンである、請求項1に記載のプロセス。
- 基板が電子的デバイスである、請求項1に記載のプロセス。
- 基板がフラットパネル表示装置である、請求項1に記載のプロセス。
- 各R1が独立してメチル基およびエチル基から成る群より選択され、各R2が独立して水素、メチル基、エチル基、プロピル基、イソ−プロピル基、n−ブチル基、イソ−ブチル基、t−ブチル基、アリル基およびフェニル基から成る群より選択される、請求項1に記載のプロセス。
- 前記物質が、窒化ケイ素である、請求項1に記載のプロセス。
- 前記物質が、酸窒化ケイ素である、請求項1に記載のプロセス。
- 前記物質が、窒化ケイ素であり、そして前記化学蒸着が、プラズマ助長化学蒸着である、請求項1に記載のプロセス。
- 前記物質が、酸化ケイ素であり、そして前記化学蒸着が、プラズマ助長化学蒸着である、請求項1に記載のプロセス。
- 前記物質が、酸窒化ケイ素であり、そして前記化学蒸着が、プラズマ助長化学蒸着である、請求項1に記載のプロセス。
- 前記化学蒸着が、原子層付着(atomic layer deposition)である、請求項1に記載のプロセス。
- 反応帯域での窒化ケイ素の低温化学蒸着プロセスであって、
a)基板を前記帯域で100〜800℃の範囲の温度に加熱する工程;
b)基板を前記帯域で10-5 トル〜760トル(1.3mPa〜101kPa)の範囲の圧力の真空中に維持する工程;
c)前記帯域に次式のヒドラジノシランを導入する工程:
[R1 2N−NH]nSi(R2)4-n
[式中、各R1は独立してC1〜C6のアルキル基より選択され;各R2は独立して水素、アルキル基、ビニル基、アリル基およびフェニル基から成る群より選択され;n=1〜4である];および
d)基板上に窒化ケイ素の膜を付着させるために十分な条件のa)〜c)を維持する工程を含むプロセス。 - ヒドラジノシランが、ビス(1,1−ジメチルヒドラジノ)メチルシラン、トリス(1,1−ジメチルヒドラジノ)シラン、トリス(1,1−ジメチルヒドラジノ)t−ブチルシラン、トリス(1,1−ジメチルヒドラジノ)s−ブチルシラン、トリス(1,1−ジメチルヒドラジノ)エチルシラン、ビス(1,1−ジメチルヒドラジノ)エチルシラン、ビス(1,1−ジメチルヒドラジノ)イソ−プロピルシラン、ビス(1,1−ジメチルヒドラジノ)アリルシラン、ビス(1,1−ジメチルヒドラジノ)シラン、テトラキス(1,1−ジメチルヒドラジノ)シラン、N,N' ,N''−トリス(ジメチルアミノ)シクロトリシラザン、N,N' ,N'',N''' −テトラキス(ジメチルアミノ)シクロテトラシラザン、トリス(1,1−ジメチルヒドラジノ)イソ−プロピルシラン、トリス(1,1−ジメチルヒドラジノ)アリルシランおよびこれらの混合物から成る群より選択される、請求項17に記載のプロセス。
- ヒドラジノシランが、窒素、アンモニア、ヒドラジンおよびこれらの混合物から成る群より選択される窒素源と反応される、請求項17に記載のプロセス。
- トリス(1,1−ジメチルヒドラジノ)シラン、トリス(1,1−ジメチルヒドラジノ)t−ブチルシラン、トリス(1,1−ジメチルヒドラジノ)s−ブチルシラン、トリス(1,1−ジメチルヒドラジノ)エチルシラン、ビス(1,1−ジメチルヒドラジノ)イソ−プロピルシラン、ビス(1,1−ジメチルヒドラジノ)アリルシラン、ビス(1,1−ジメチルヒドラジノ)シラン、テトラキス(1,1−ジメチルヒドラジノ)シラン、N,N' ,N''−トリス(ジメチルアミノ)シクロトリシラザン、N,N' ,N'',N''' −テトラキス(ジメチルアミノ)シクロテトラシラザン、トリス(1,1−ジメチルヒドラジノ)イソ−プロピルシランおよびトリス(1,1−ジメチルヒドラジノ)アリルシランから成る群より選択される物質を含む組成物。
- トリス(1,1−ジメチルヒドラジノ)シランを含む組成物。
- トリス(1,1−ジメチルヒドラジノ)t−ブチルシランを含む組成物。
- トリス(1,1−ジメチルヒドラジノ)s−ブチルシランを含む組成物。
- ビス(1,1−ジメチルヒドラジノ)イソ−プロピルシランを含む組成物。
- ビス(1,1−ジメチルヒドラジノ)アリルシランを含む組成物。
- ビス(1,1−ジメチルヒドラジノ)シランを含む組成物。
- テトラキス(1,1−ジメチルヒドラジノ)シランを含む組成物。
- N,N' ,N''−トリス(ジメチルアミノ)シクロトリシラザンを含む組成物。
- トリス(1,1−ジメチルヒドラジノ)イソ−プロピルシランを含む組成物。
- トリス(1,1−ジメチルヒドラジノ)アリルシランを含む組成物。
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US7122222B2 (en) | 2006-10-17 |
US20040146644A1 (en) | 2004-07-29 |
KR20040067950A (ko) | 2004-07-30 |
US7288145B2 (en) | 2007-10-30 |
CN1518076A (zh) | 2004-08-04 |
TW200413560A (en) | 2004-08-01 |
JP2004228585A (ja) | 2004-08-12 |
EP1441042A1 (en) | 2004-07-28 |
TWI248472B (en) | 2006-02-01 |
US20070004931A1 (en) | 2007-01-04 |
KR100654279B1 (ko) | 2006-12-08 |
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