WO1999003926A1 - Composition alcoxysilane/polymere organique destinee a la production de fines pellicules isolantes et procede d'utilisation - Google Patents
Composition alcoxysilane/polymere organique destinee a la production de fines pellicules isolantes et procede d'utilisation Download PDFInfo
- Publication number
- WO1999003926A1 WO1999003926A1 PCT/JP1998/003186 JP9803186W WO9903926A1 WO 1999003926 A1 WO1999003926 A1 WO 1999003926A1 JP 9803186 W JP9803186 W JP 9803186W WO 9903926 A1 WO9903926 A1 WO 9903926A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thin film
- organic polymer
- alkoxysilane
- group
- solvent
- Prior art date
Links
- 229920000620 organic polymer Polymers 0.000 title claims abstract description 113
- 239000000203 mixture Substances 0.000 title claims abstract description 74
- 238000004519 manufacturing process Methods 0.000 title abstract description 27
- 239000010409 thin film Substances 0.000 claims abstract description 189
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 134
- 239000002131 composite material Substances 0.000 claims abstract description 75
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 67
- 239000002904 solvent Substances 0.000 claims abstract description 50
- 239000004065 semiconductor Substances 0.000 claims abstract description 40
- 239000003960 organic solvent Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 29
- 230000007062 hydrolysis Effects 0.000 claims abstract description 21
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 21
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 19
- 230000018044 dehydration Effects 0.000 claims abstract description 18
- 125000004185 ester group Chemical group 0.000 claims abstract description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 33
- 229920000642 polymer Polymers 0.000 claims description 26
- 125000001931 aliphatic group Chemical group 0.000 claims description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- 238000010304 firing Methods 0.000 claims description 17
- 239000011148 porous material Substances 0.000 claims description 16
- 238000006482 condensation reaction Methods 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 11
- 239000004417 polycarbonate Substances 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 8
- 229920000515 polycarbonate Polymers 0.000 claims description 8
- 229920000570 polyether Polymers 0.000 claims description 8
- 125000001033 ether group Chemical group 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 229920003232 aliphatic polyester Polymers 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 229920005576 aliphatic polyanhydride Polymers 0.000 claims description 3
- 150000001721 carbon Chemical group 0.000 claims description 3
- 239000000539 dimer Substances 0.000 claims description 3
- 229920001515 polyalkylene glycol Polymers 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 2
- 125000005586 carbonic acid group Chemical group 0.000 claims 1
- 230000003301 hydrolyzing effect Effects 0.000 claims 1
- 239000010408 film Substances 0.000 abstract description 30
- 238000009833 condensation Methods 0.000 abstract description 8
- 230000005494 condensation Effects 0.000 abstract description 8
- 125000003368 amide group Chemical group 0.000 abstract 1
- -1 polytetrafluoroethylene Polymers 0.000 description 43
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 23
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 23
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 23
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 20
- 239000000499 gel Substances 0.000 description 19
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 17
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 17
- 229920001223 polyethylene glycol Polymers 0.000 description 17
- 239000000047 product Substances 0.000 description 16
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 15
- 239000000243 solution Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 12
- 150000002430 hydrocarbons Chemical group 0.000 description 12
- 229910021426 porous silicon Inorganic materials 0.000 description 11
- 239000000758 substrate Substances 0.000 description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229910000077 silane Inorganic materials 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 229920002538 Polyethylene Glycol 20000 Polymers 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 238000001879 gelation Methods 0.000 description 6
- 239000012046 mixed solvent Substances 0.000 description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N oxalic acid group Chemical group C(C(=O)O)(=O)O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 5
- 239000002033 PVDF binder Substances 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 5
- 239000012298 atmosphere Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- DRUOQOFQRYFQGB-UHFFFAOYSA-N ethoxy(dimethyl)silicon Chemical compound CCO[Si](C)C DRUOQOFQRYFQGB-UHFFFAOYSA-N 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- 150000004703 alkoxides Chemical class 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- FJKCDSVHCNEOOS-UHFFFAOYSA-N ethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[SiH](OCC)C1=CC=CC=C1 FJKCDSVHCNEOOS-UHFFFAOYSA-N 0.000 description 4
- RSIHJDGMBDPTIM-UHFFFAOYSA-N ethoxy(trimethyl)silane Chemical compound CCO[Si](C)(C)C RSIHJDGMBDPTIM-UHFFFAOYSA-N 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- ARYZCSRUUPFYMY-UHFFFAOYSA-N methoxysilane Chemical compound CO[SiH3] ARYZCSRUUPFYMY-UHFFFAOYSA-N 0.000 description 4
- 229910017604 nitric acid Inorganic materials 0.000 description 4
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 4
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- ATHHXGZTWNVVOU-UHFFFAOYSA-N N-methylformamide Chemical compound CNC=O ATHHXGZTWNVVOU-UHFFFAOYSA-N 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- UGAPHEBNTGUMBB-UHFFFAOYSA-N acetic acid;ethyl acetate Chemical compound CC(O)=O.CCOC(C)=O UGAPHEBNTGUMBB-UHFFFAOYSA-N 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 150000008064 anhydrides Chemical group 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 229920001610 polycaprolactone Polymers 0.000 description 3
- 229920001451 polypropylene glycol Polymers 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229920001221 xylan Polymers 0.000 description 3
- CYSGHNMQYZDMIA-UHFFFAOYSA-N 1,3-Dimethyl-2-imidazolidinon Chemical compound CN1CCN(C)C1=O CYSGHNMQYZDMIA-UHFFFAOYSA-N 0.000 description 2
- JTXMVXSTHSMVQF-UHFFFAOYSA-N 2-acetyloxyethyl acetate Chemical compound CC(=O)OCCOC(C)=O JTXMVXSTHSMVQF-UHFFFAOYSA-N 0.000 description 2
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- PMDCZENCAXMSOU-UHFFFAOYSA-N N-ethylacetamide Chemical compound CCNC(C)=O PMDCZENCAXMSOU-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 125000005587 carbonate group Chemical group 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 150000001991 dicarboxylic acids Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003623 enhancer Substances 0.000 description 2
- ZZRGHKUNLAYDTC-UHFFFAOYSA-N ethoxy(methyl)silane Chemical compound CCO[SiH2]C ZZRGHKUNLAYDTC-UHFFFAOYSA-N 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 108010025899 gelatin film Proteins 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- POPACFLNWGUDSR-UHFFFAOYSA-N methoxy(trimethyl)silane Chemical compound CO[Si](C)(C)C POPACFLNWGUDSR-UHFFFAOYSA-N 0.000 description 2
- BKXVGDZNDSIUAI-UHFFFAOYSA-N methoxy(triphenyl)silane Chemical compound C=1C=CC=CC=1[Si](C=1C=CC=CC=1)(OC)C1=CC=CC=C1 BKXVGDZNDSIUAI-UHFFFAOYSA-N 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- XNLICIUVMPYHGG-UHFFFAOYSA-N pentan-2-one Chemical compound CCCC(C)=O XNLICIUVMPYHGG-UHFFFAOYSA-N 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000004632 polycaprolactone Substances 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 238000006884 silylation reaction Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 description 2
- 238000000352 supercritical drying Methods 0.000 description 2
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 description 2
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 2
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- UFXTUVMLZXCPLH-UHFFFAOYSA-N (2,3-dimethylphenoxy)silane Chemical compound C1=C(C(=C(C=C1)O[SiH3])C)C UFXTUVMLZXCPLH-UHFFFAOYSA-N 0.000 description 1
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 1
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 1
- ZVYSYCLZXICWLH-UHFFFAOYSA-N 1,3-dioxetan-2-one Chemical compound O=C1OCO1 ZVYSYCLZXICWLH-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- LNWWQYYLZVZXKS-UHFFFAOYSA-N 1-pyrrolidin-1-ylethanone Chemical compound CC(=O)N1CCCC1 LNWWQYYLZVZXKS-UHFFFAOYSA-N 0.000 description 1
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 1
- QQZOPKMRPOGIEB-UHFFFAOYSA-N 2-Oxohexane Chemical class CCCCC(C)=O QQZOPKMRPOGIEB-UHFFFAOYSA-N 0.000 description 1
- STMSRQMGUCRAKM-UHFFFAOYSA-N 2-n-ethyl-1,3,5-triazine-2,4,6-triamine Chemical compound CCNC1=NC(N)=NC(N)=N1 STMSRQMGUCRAKM-UHFFFAOYSA-N 0.000 description 1
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 1
- 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 1
- IRWNICCEFSGCRT-UHFFFAOYSA-N 4-ethyl-1,3-dimethylimidazolidin-2-one Chemical compound CCC1CN(C)C(=O)N1C IRWNICCEFSGCRT-UHFFFAOYSA-N 0.000 description 1
- DEVXQDKRGJCZMV-UHFFFAOYSA-K Aluminum acetoacetate Chemical compound [Al+3].CC(=O)CC([O-])=O.CC(=O)CC([O-])=O.CC(=O)CC([O-])=O DEVXQDKRGJCZMV-UHFFFAOYSA-K 0.000 description 1
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- NIINUVYELHEORX-UHFFFAOYSA-N triethoxy(triethoxysilylmethyl)silane Chemical compound CCO[Si](OCC)(OCC)C[Si](OCC)(OCC)OCC NIINUVYELHEORX-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
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- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
- H05K3/4673—Application methods or materials of intermediate insulating layers not specially adapted to any one of the previous methods of adding a circuit layer
- H05K3/4676—Single layer compositions
Definitions
- the present invention relates to an alkoxysilane-organic polymer composition for producing an insulating thin film. More specifically, the present invention relates to (A) a specific alkoxysilane, (B) a specific organic polymer, and (C) a solvent for the alkoxysilane (A) and the organic polymer (B). And a solvent containing an organic solvent having a mid group and / or an ester group. Since the composition of the present invention is used as a raw material, it can be easily used in the current semiconductor device manufacturing process, and has a low dielectric constant for a multilayer wiring structure of a semiconductor device. An insulating layer can be manufactured.
- the present invention provides a multilayer wiring structure of a semiconductor device, including an insulating layer composed of a thin film obtained by using the above composition and a wiring formed thereon, and a multilayer wiring structure of the semiconductor element.
- the present invention relates to a semiconductor device including a structure.
- Indispensable for multilayer wiring structures of semiconductor devices including LSI As a material for the edge layer, silica having a dielectric constant of 4.0 to 4.5 has been generally used. However, in recent years, the wiring of semiconductor elements such as LSIs has been continuously increasing in density, and accordingly, the distance between adjacent wirings on a substrate has been reduced. As a result, the wiring adjacent to the insulator interposed between them functions as a capacitor. At this time, if the dielectric constant of the insulator is high, the capacitance of the capacitor increases, and as a result, the delay of the transmission of the electric signal transmitted through the wiring becomes remarkable, which poses a problem. In order to solve such a problem, use of a material having a low dielectric constant as an insulating layer material for a multilayer wiring structure is being studied.
- the currently known substance with the lowest dielectric constant is polytetrafluoroethylene, which has a dielectric constant of about 1.9, but in general, fluoropolymers are not compatible with substrates and wiring. Due to poor adhesion and heat resistance, there is a problem as a material for the insulating layer for a multilayer wiring structure.In addition, in recent years, the dielectric constant of the insulating layer has been required to be less than 1.9. It is getting to be done.
- an insulating layer having a lower dielectric constant which is made of a composite of air and a dielectric constant of 1, which is made of an existing material made porous.
- a typical porous material is silica air mouth gel.
- it is essential to carry out supercritical drying for the production of silica air mouth gel. As a result, it takes a long time to produce a gel with a gel with a porous air port. It is virtually impossible to introduce the manufacturing process of the insulating layer composed of silica airgel into the current semiconductor device manufacturing process, because it always requires complicated processes and special equipment.
- US Pat. No. 5,472,913 discloses a method for obtaining a porous silica using a special technique without performing supercritical drying. However, since the process is rather complicated, it is difficult to use this method to introduce the manufacturing process of an insulating layer composed of porous silica into the current semiconductor device manufacturing process.
- Japanese Patent Application Laid-Open No. Hei 8 — 245,278 discloses that a metal alkoxide solution to which poly (ethylene glycol) is added is coated on a substrate, and then heated and fired to obtain a ceramic. A method for producing a porous thin film is disclosed.
- Japanese Patent Application Laid-Open No. 7-109389 discloses that a metal alkoxide or the like is hydrolyzed and condensed in the presence of an organic polymer, and then calcined to obtain a petroleum refinery. A method for producing a catalyst support has been disclosed.
- WO97Z069696 discloses a recoating solution prepared by dissolving a metal alkoxide, an acid and an organic polymer in a mixed solvent comprising a first solvent and water. This solution is applied to a glass substrate, the gel film formed on the substrate is dried, the gel film is immersed in a second solvent, and the organic polymer is extracted from the film.
- a method for producing a porous metal oxide film by firing a film is disclosed.
- the present inventors have proposed a multilayer wiring structure for a semiconductor device which has a low dielectric constant and can be manufactured by a method which can be easily implemented in the current semiconductor device manufacturing process.
- a silica-organic polymer obtained by molding a composition comprising a thin film and heat-treating the obtained thin film.
- the composite thin film and the porous silica thin film obtained by removing the organic thin film from the composite thin film have a low dielectric constant and are considered to be suitable as an insulating layer for a multilayer wiring structure of a semiconductor device. Therefore, it can be manufactured by a method that can be easily implemented in the current semiconductor device manufacturing process. And have completed the present invention.
- one object of the present invention is to provide an insulating layer for a multilayer wiring structure of a semiconductor device, which has a low dielectric constant and can be manufactured by a method which can be easily implemented in a current semiconductor device manufacturing process.
- a composition for producing the same is to provide an insulating layer for a multilayer wiring structure of a semiconductor device, which has a low dielectric constant and can be manufactured by a method which can be easily implemented in a current semiconductor device manufacturing process.
- Another object of the present invention is to provide an insulating composite thin film obtained by using the above composition, a porous silicon thin film obtained from the composite thin film, and uses thereof. It is here.
- each R independently represents a linear or branched alkyl group having 16 carbon atoms
- RR 2 and R 3 each independently represent a hydrogen atom or a monovalent monovalent having 6 carbon atoms.
- alkoxysilane selected from the group consisting of (4) monoanorokeoxysilane and (5) trialkoxysilane dimer, provided that the above-mentioned alkoxysilane (3) and (4) (Ii) at least one selected from the group consisting of the above alkoxysilanes (1), (2) and (5);
- (C) a solvent for the alkoxysilane (A) and the organic polymer (B), which is at least selected from the group consisting of an organic solvent having an amide bond and an organic solvent having an ester bond.
- Alkoxysilanes for the production of insulating thin films A reminder composition is provided.
- each R independently represents a linear or branched alkyl group having 1 to 6 carbon atoms
- RR 2 and R 3 each independently represent a hydrogen atom or a carbon atom having 1 to 6 carbon atoms.
- R 4 represents a divalent hydrocarbon group having 6 carbon atoms.
- Aliphatic polyester chain having a repeating unit containing an aliphatic polycarbonate chain having a repeating unit having a carbon number of 2 to 12, and ananhan having a repeating unit of 2 to 12 carbon atoms At least at least one kind of aliphatic polymer selected from the group consisting of aliphatic polyanhydride chains having a hydrid group-containing repeating unit.
- (C) a solvent for the alkoxysilane (A) and the organic polymer (B), which is at least selected from the group consisting of an organic solvent having an amide bond and an organic solvent having an ester bond. Also a solvent containing one organic solvent,
- An alkoxysilane-organic polymer composition for producing an insulating thin film comprising:
- the alkoxysilane (A) comprises at least one kind of the above-mentioned alkoxysilanes (1) and the above-mentioned alkoxysilanes (2) to (2).
- the alkoxysilane (A) is at least one of the above trialkoxysilanes (2), or at least one of the above trialkoxysilanes (2) and the above alkoxysilanes.
- the composition according to the above (1) which is a mixture with at least one kind of alkoxysilane selected from the group consisting of (3) to (5).
- the organic polymer (B) is a polyalkylene glycol having a number average molecular weight of 200 to 100,000 and having an ether group-containing repeating unit having 2 to 12 carbon atoms. 6.
- the content of the organic polymer (B) in the composition is from 0.1 to 1 part by weight based on 1 part by weight of a product obtained by hydrolysis and dehydration condensation of the entire alkoxysilane (A). 7.
- 8.A thin film is formed by molding the composition described in any one of the above items 1 to 7,
- the alkoxysilane (A) in the thin film is gelled by its hydrolysis / dehydration condensation reaction, and
- silica-organic polymer composite thin film according to item 8 wherein the film thickness is 0.1 or more: L O Om.
- silica-organic polymer composite thin film according to the item 8 or 9, wherein the silica-organic polymer thin film is transparent to visible light having a wavelength of 0.4 to 0.7 m.
- silica-organic polymer composite including a plurality of insulating layers and wiring formed thereon, wherein at least one of the insulating layers is A multilayer wiring structure comprising a thin film.
- a semiconductor device including the multilayer wiring structure according to 11 above, 13.
- a porous silica thin film obtained by removing the organic polymer from the silica-organic polymer-composite thin film according to any one of the above items 8 to 10.
- porous silica thin film according to any one of the above items 13 to 15, characterized in that the porous silica thin film is surface-treated with a silylating agent.
- a plurality of insulating layers and wiring formed thereon are included, and at least one of the insulating layers is made of a porous silica thin film described in any one of the above items 13 to 16.
- a multilayer wiring structure is included.
- At least one kind of alkoxysilane used as the component (A) of the alkoxysilane-organic polymer composition of the present invention has the following formula (1) to (5):
- each R independently represents a linear or branched alkyl group having 1 to 6 carbon atoms
- RR 2 and R 3 each independently represent a hydrogen atom or 1 to 6 carbon atoms.
- R 4 represents a divalent hydrocarbon group having 1 to 6 carbon atoms.
- alkyl groups suitable as R in the formula are methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl and t-butyl. is there.
- alkyl groups suitable as R 2 and R 3 in the formula are a hydrogen atom, a methyl group and a phenyl group.
- divalent hydrocarbon group suitable as R 4 in the formula include a methylene group, an ethylene group, an isopropylidene group and And a phenylene group.
- the alkoxysilane (A) may be used in at least one of the alkoxysilanes selected from the group consisting of the alkoxysilanes (1), (2) and (5), and if desired, the alkoxysilane (3) and (4) It is preferable that the alkoxy silane (A) obtained by adding at least one type of alkoxy silane selected from the group consisting of: In particular, the above-mentioned anolecoxysilane (A) is
- At least one of the above alkoxysilanes (3) and (4) is selected from the group consisting of the above alkoxysilanes.
- the alkoxysilane (A) is replaced with the alkoxysilane
- the content of (1) is increased, the crosslinking density of the product obtained by the hydrolysis and dehydration condensation of the alkoxysilane (A) is increased, and the silica-polyorganic polymer of the present invention described later is used.
- the mechanical strength of the mer composite thin film and the porous silicon thin film is improved.
- the content of the tetraalkoxysilane (1 ′) is reduced, and at least one kind selected from the group consisting of the alkoxysilanes (2) to (5) is used.
- the content of the alkoxysilane is increased, the crosslink density of the product obtained by hydrolysis and dehydration condensation of the alkoxysilane (A) is reduced, so that the product has a crack ( Cracks) are less likely to occur.
- a hydrocarbon group is directly connected to a silicon atom, the hygroscopicity of the above product is greatly reduced due to the influence of the hydrocarbon group.
- Each of (1) to (3) and (5) may be partially hydrolyzed.
- any other metal alkoxide that can be condensed with each of the above-mentioned alkoxysilanes (1) to (5) for example, aluminum, titanium, zirconium, borane C 1 to C 6 alcohols, preferably elemental, magnesium, germanium, zinc, tin, niobium, lead, strontium, lithium, and lithium, preferably phenolic arm, titanium down, C of zirconyl two c beam, ⁇ C 6 alkoxy de the Arco Kishishira switch (1) can also this added to (5).
- the addition amount is alkoxysilane
- alkoxysilanes that can be used as the above-mentioned alkoxysilanes (1) to (5) include tetramethoxysilane and tetraethoxysilane. , Tetra
- n-Proboxy silane Tetra (i-Proboxy) silane, Tetra (n-butoxy) silane, Tetra (t-butoxy) silane, Trime Toxicylane, triethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, dimethyinoresin Toxisilane, Dimethyl ethoxy silane, Diphenyl ethoxy silane, Diphenyl ethoxy silane, Phenyl dimethyl siloxane, Phenyl ethoxy silane, Methyl dimethyl silane, Methyl ethoxy silane And phenylmethyl Dimethoxy silane, phenylmethyl ethoxy silane, trimethyl methoxy silane, trimethyl ethoxy silane, triphenyl methoxy silane, triphenyl methoxy silane, triphenyl meth
- tetramethoxysilane, tetraethoxysilane, trimethoxysilane, triethoxysilane, methyltrimethoxysilane, methyltriethoxysilane Preference is given to xysilane, dimethyl dimethyl xylan, dimethyl methoxy xylan, trimethyl methoxy silane and trimethyl ethoxy silane.
- Examples of the organic polymer used as the component (B) of the alkoxysilane-organic polymer composition of the present invention include a compound having a carbon number of 2 to 12 as apparent from the specific examples described below.
- G-containing repeating unit And at least one fat selected from the group consisting of an aliphatic polycarbonate chain having an aliphatic group having 2 to 12 carbon atoms and an aliphatic group having a repeating unit having 2 to 12 carbon atoms.
- An organic polymer having a main chain mainly composed of an aromatic polymer chain is used.
- the organic polymer (B) may be a single polymer or a mixture of a plurality of polymers.
- the main chain of the organic polymer (B) may contain a polymer chain having any repeating unit other than those described above as long as the effects of the present invention are not impaired, and may be at the terminal. It may have a functional group.
- the terminal of the polyether, the polyester, the polycarbonate, and the polyanhydride is usually a hydroxyl group or a carboxyl group, but the terminal functional group in the present invention is not limited thereto, and the present invention is not limited thereto. It may be modified with any functional group as long as the effect of the above is not impaired.
- Examples of the aliphatic polyether having an ether group-containing repeating unit having 2 to 12 carbon atoms include poly (ethylene glycol), poly (propylene glycol), poly (methylendrene) glycol, and poly (tetraethylene).
- Alkylene glycols such as lamethylene glycol, polypentamethylen glycol, polyhexamethylen glycol, polydioxolan, and polydioxepane can be mentioned.
- aliphatic polycarbonates are polyglycolide, polycaprolactone, polyprolactone triol, and polypyrrololactone.
- ring-opening copolymers of epoxides and acid anhydrides are polyglycolide, polycaprolactone, polyprolactone triol, and polypyrrololactone.
- Examples of the aliphatic polycarbonate having a carbonate group-containing repeating unit having 2 to 12 carbon atoms include polyethylene carbonate, polypropylene carbonate, and polytricarbonate.
- Polycondensates of carbonic acid and alkylendalcol, such as methylene carbonate, polytetramethylene carbonate, polylene methylcarbonate, and polyhexamethylene carbonate, can be mentioned. You.
- Examples of aliphatic polyanhydrides having an anhydride group-containing repeating unit having 2 to 12 carbon atoms include poly (malonyl oxide), poly (adiboyl oxide), and poly (pi-methyol).
- Examples include polycondensates of dicarboxylic acids such as loyloxide, polyhydroxyloxide, polyazelaoyloxide, and polysebaccoinoleoxide.
- polyethylene glycol, polypropylene glycol, polypropylactatone, polyprolactone triol polyethylene carbonate, polypentamethylene It is preferable to use polycarbonate, polymethylene carbonate, or polyaziboyl oxide, polyazeoinoleoxide, or polycoxyl oxide.
- alkylene glycol refers to a dihydric alcohol obtained by substituting two hydrogen atoms of an alkyl group having 2 or more carbon atoms that are not bonded to the same carbon atom with hydroxyl groups.
- dicarboxylic acids are organic compounds having two carboxyl groups such as oxalic acid, malonic acid, succinic acid, glutanoleic acid, adipic acid, pimelic acid, suberic acid, azelic acid, and sebacic acid. Refers to acids.
- the homogeneity of the resulting silica-organic polymer composite thin film is insufficient.
- problems such as an increase in the sintering temperature have arisen, and the present semiconductor device manufacturing process requires that the silica-organic polymer composite thin film and the porous silica thin film of the present invention be manufactured. Becomes difficult.
- any other polymer may be added for the purpose of, for example, adjusting viscosity or improving coating properties.
- the content of the organic polymer (B) in the composition of the present invention varies depending on the physical properties to be possessed by the silica-organic polymer composite thin film and the porous silica thin film described below.
- Serial total amount hydrolysis of alkoxysilane emissions (A) with respect to product 1 part by weight obtained by dehydration condensation, 1 0 _ 2 to 1 0 0 parts by weight, preferable properly 1 0 1 to 1 0 weight Parts, more preferably in the range of 0.5 to 5 parts by weight. If the content of the organic polymer (B) is less than 10 to 2 parts by weight based on 1 part by weight of the above product, a thick film cannot be applied and crack resistance cannot be obtained, so that the composite is not obtained.
- the characteristics of the body do not appear, and a porous silica thin film having a sufficient porosity cannot be obtained. Also, if the amount is more than 100 parts by weight, the properties of the composite do not appear because the mechanical properties do not increase, and a porous silica thin film having sufficient mechanical strength cannot be obtained, so that practicality is not improved. Scarce.
- the number average molecular weight of the organic polymer (B) is preferably from 200,000 to 100,000. It should be noted here that the pore size of the porous silicon thin film is extremely small, independent of the molecular weight of the organic polymer. This is a major difference between the present invention and the conventional technology, and the composite or porous silica of the present invention is particularly excellent as an insulating layer for a multilayer wiring structure of a semiconductor device. This is one reason.
- the solvent for the alkoxysilane (A) and the organic polymer (B) used as the component (C) of the alkoxysilane-organic polymer composition composition of the present invention is amide. It is necessary to contain at least one organic solvent selected from the group consisting of an organic solvent having a bond and an organic solvent having an ester bond.
- At least one organic solvent selected from the group consisting of an organic solvent having an amide bond and an organic solvent having an ester bond in the solvent (C) is a silica-organic solvent described later.
- the polymer composite thin film has an effect of preventing the organic polymer (B) dispersed almost molecularly in the thin film from associating to increase the size of the polymer phase.
- a group consisting of an organic solvent having an amide bond and an organic solvent having an ester bond is used.
- the molecules of the organic polymer (B) are aggregated as described below.
- the organic polymer (B) dispersed in the silica-organic polymer composite thin film associates and the size of the polymer phase increases.
- a porous silica thin film described later is manufactured using such a composite thin film, a large amount of the porous silica thin film is contained in the porous silica thin film. Such holes often cause defects in a multilayer wiring structure in a semiconductor device.
- the content of the organic solvent having an amide bond and / or the organic solvent having an ester bond in the solvent (C) is preferably 1% by weight or more of the whole solvent (C). Content is 1 weight
- the organic solvent having an amide bond and / or the organic solvent having an ester bond is poor, and the organic polymer (B) in the silica-organic polymer composite thin film is reduced.
- the size of the polymer phase becomes large, and as a result, a porous silica thin film having small pores and large porosity may not be obtained.
- Examples of the solvent having an amide bond that can be used in the present invention include formamide, N—methylformamide, N—ethylformamide, N, N—dimethylformamide, N , N—Jethylformamide, N—Methylacetamide, N—Ethylacetamide, N, N—Dimetylacetamide, N, N—Jethylformamide, N — Methylpyrrolidone, N—Horminole monolefolin, N—Acetinolemorpholin, N—Hormilipeperidine, N—Acetylbiperidine, N—Honoremilpyrrolidine, N—Acetylpyrrolidine, N , N'-diformylpiperazine, N, N'-amides such as diacetyl-biperazine, tetramethyl terephthalate, N, N'-dimethyl-imidazolidinone, etc.
- Examples of the solvent having an ester bond that can be used in the present invention include ethyl formate and methyl acetate.
- N N—dimethylformamide
- N N—dimethylformamide
- One kind of organic solvent selected from the group consisting of an organic solvent having an amide bond and an organic solvent having an ester bond may be used alone as the solvent (C).
- Mixed solvent consisting of at least one organic solvent and at least one other organic solvent
- (C) is preferred because the viscosity of the composition of the present invention and the evaporation rate of the solvent (C) can be easily controlled.
- other solvents include alcohols such as C i -C 4 monohydric alcohol, C i -C 4 dihydric alcohol, glycerin, etc.
- tilsnorefoxide dimethylsnorefon, and sulfolane.
- C monohydric alcohol one le of ⁇ C 4, C i ⁇ C 4 bivalent Anoreko Lumpur, grayed Li Se Li down, ethyl Renguri Konoremono main Chinoreetenore, pro pin render Li co Rumo Roh main switch
- a solvent having a hydroxyl group such as a diether, because a thin film having a uniform film thickness can be easily produced when the composition of the present invention is molded to produce a thin film.
- the amount of the solvent (C) in the composition of the present invention is preferably 0.05% by weight or more based on the total weight of the composition of the present invention. If the content is less than 0.05% by weight, the alkoxysilane (A) in the composition of the present invention will not be sufficiently gelled by the hydrolysis / dehydration condensation reaction, so Obtain a certain silica organic polymer composite thin film or porous silica thin film It can be difficult.
- the composition of the present invention may contain a substance that functions as a catalyst for accelerating the hydrolysis / dehydration condensation reaction of the alkoxysilane (A).
- a substance that functions as a catalyst include hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, formic acid, acetic acid, oxalic acid, malonic acid, maleic acid, toluenesulfonic acid, and the like, and ammonia water.
- bases such as potassium hydroxide, sodium hydroxide, triethylamine, triethanolamine, pyridine, pyridine and colin.
- the acid and the base may be used alone or in combination of two or more. It is also possible to carry out stepwise treatment using both an acid and a base.
- stepwise treatment refers to, for example, treatment with an acid catalyst before treatment with a base catalyst or vice versa. In this case, two types of catalysts are added to the composition.
- the amount of the catalyst, alkoxysilane emissions (A) 1 mol per 1 mol or less, preferable properly is suitably 1 0 1 mol. If the amount is more than 1 mol, a precipitate is formed, and it may be difficult to obtain a uniform porous silica thin film.
- water is required for hydrolysis of the alkoxysilane (A).
- Water may be added to the composition of the present invention in advance, or if the above catalyst is added as an aqueous solution to the composition of the present invention. In this case, water as the solvent may be used.
- water as the solvent may be used.
- the hydrolysis of the alkoxysilane (A) is carried out in an atmosphere containing a sufficient amount of water vapor, it is not necessary to particularly add water.
- suitable amount of water added ⁇ Rukokishishira emissions (A) versus the Kei atom 1 mol contained in 1 0 4 mol or less, preferable properly 10 moles or less.
- 1 0 4 mode Ruyo Li large, there are cases where homogeneity of the silica force one organopolyphosphite M a composite thin film is lowered.
- additives such as a photocatalyst generator for imparting photosensitivity, an adhesion enhancer for enhancing adhesion to a substrate, and a stabilizer for long-term storage may be added. Can be added to the composition of the present invention within a range that does not impair the properties.
- a thin film is formed by molding the composition obtained as described above, and the alkoxysilane (A) in the obtained thin film is gelled by the hydrolysis and dehydration condensation reaction. Then, by a method including removing the solvent (C) remaining in the thin film, a silica-organic polymer composite thin film can be obtained.
- silicon refers to a material having a hydrocarbon group or a hydrogen atom on silicon in addition to SiO 2 .
- a thin film is formed by applying the composition of the present invention on a substrate.
- the thin film can be formed by a known method such as casting, immersion, or spin coating, but a spin coat is preferable for use in manufacturing an insulating layer for a multilayer wiring structure of a semiconductor device. It is.
- the thickness of the thin film can be adjusted by changing the viscosity and rotation speed of the composition. It can be controlled in the range of ⁇ 10 1 ⁇ . 1 ⁇ ⁇ ⁇ ⁇ If thick, cracks may occur.
- As an insulating layer for a multi-layer wiring structure of a semiconductor element usually 0.5 in! A ⁇ 5 m thin film is used.
- Substrates include semiconductor substrates such as silicon and germanium, and compound semiconductor substrates such as gallium-arsenic and indium-antimony.
- a plate or the like can be used, or a thin film of another substance can be formed on these surfaces.
- the thin film may be a thin film made of a metal such as aluminum, titanium, chromium, nickel, copper, silver, tantanore, tungsten, osmium, platinum, gold, or silicon dioxide.
- a thin film composed of an inorganic compound such as silsesquioxane fluoride, a thin film composed of methylsilsesquioxane, amonoreforescarbon, fluorinated amonorefuse carbon, polyimide, or any other organic polymer is used. Can be done.
- the surface of the substrate may be treated with an adhesion enhancer in advance.
- an adhesion enhancer in this case, those used as a so-called silane coupling agent or an aluminum kill compound can be used.
- silane coupling agent or an aluminum kill compound
- Particularly preferred are 3-aminopropyl trimethoxysilane, 3-aminopropyltriethoxysilane, and N-aminopropyl trimethoxysilane.
- the thin film obtained as described above When the alkoxysilane (A) in the thin film obtained as described above is gelated by a hydrolysis-dehydration condensation reaction, the thin film has a silicon dioxide-like three-dimensional network structure. It becomes a product.
- the temperature of the hydrolysis / dehydration condensation reaction of the alkoxysilane (A) is not particularly limited, but is usually in the range of 0 to 180 ° C, preferably 30 to 150 ° C.
- the temperature is lower than 0 ° C, the reaction rate is low, and it takes a long time for the alkoxysilane (A) to sufficiently gel.
- the temperature is higher than 180 ° C, a huge void is formed. It is easy to form, and the homogeneity of the silica-organic polymer composite thin film described later decreases.
- Hydrolysis of alkoxyxylan (A) '' Dehydration condensation The time required for the reaction varies depending on the temperature of the heat treatment, the amount of the catalyst, and the like, but is usually in the range of several minutes to several days.
- the gelation of the alkoxysilane (A) and the evaporation of at least a portion of the solvent (C) occur simultaneously, but by adjusting the boiling point of the solvent (C), the type of catalyst, and the amount added. It is also possible to adjust the speed of both. In general, it is better to adjust at least part of the solvent (C) to remain in the thin film until the alkoxysilane (A) gels sufficiently. Is often given.
- the thin film is subsequently dried to remove the remaining solvent (C).
- the drying temperature depends on the type of the solvent used, but is usually in the range of 30 to 250 ° C. Drying under reduced pressure is also effective. In order to control the generation of voids and obtain a homogeneous silica-organic polymer composite thin film, it is also preferable to use a method of gradually increasing the temperature while drying.
- a silica-organic polymer composite thin film can be obtained.
- the organic polymer (B) is dispersed in the composite thin film in a state of a molecular chain without meeting.
- the composite thin film becomes transparent to visible light having a wavelength of 0.4 to 0.7 m.
- the silica-organic polymer composite thin film thus obtained has a lower dielectric constant and a thicker film-forming property than the silicon dioxide thin film obtained using only alkoxysilane. Therefore, it can be used as it is as an insulating layer for a multilayer wiring structure of a semiconductor element.
- this composite thin film into a porous silica thin film for the purpose of obtaining an insulating layer having a lower dielectric constant for a multilayer wiring structure of a semiconductor device.
- the conversion of the composite thin film into a porous silica thin film is performed by removing the organic polymer (B) from the composite thin film.
- the molecular chain of the organic polymer (B) in the silica-organic polymer composite thin film is occupied.
- the remaining space remains unbroken as pores in the porous silica thin film.
- a porous silicon thin film having a high porosity and a low dielectric constant can be obtained.
- Examples of the method for removing the organic polymer (B) include heating and baking, plasma treatment, and solvent extraction. However, it is preferable because it can be easily carried out in the current semiconductor device manufacturing process. What is new is heating and firing.
- the firing temperature depends on the type of the organic polymer (B) used, but is usually in the range of 300 ° C to 500 ° C, preferably in the range of 350 ° C to 450 ° C. It is. If the temperature is higher than 500 ° C., the pores of the porous silicon thin film are crushed and the film thickness is significantly reduced, and the dielectric constant increases. If the temperature is lower than 300 ° C, the decomposition of the organic polymer (B) is not sufficient. Therefore, there is a risk that a porous silicon thin film having a low dielectric constant cannot be obtained because an organic substance derived from the organic polymer (B) remains as an impurity in the obtained porous silicon thin film.
- the firing time is in the range of 1 minute to 24 hours. If the amount is less than 1 minute, the decomposition of the organic polymer (B) does not proceed sufficiently, and the organic substance derived from the organic polymer (B) remains as an impurity in the obtained porous silica thin film, so that the dielectric constant is reduced. There is a risk that a porous silica thin film with a low rate cannot be obtained. Further, since the thermal decomposition of the organic polymer (B) is usually completed within 24 hours, calcination for a longer time does not make sense.
- the firing may be performed in an inert atmosphere such as nitrogen, argon, or helium, or may be performed in an oxidizing atmosphere such as a gas containing oxygen gas, for example, air.
- an oxidizing atmosphere such as a gas containing oxygen gas, for example, air.
- firing in an oxidizing atmosphere tends to lower the firing temperature and shorten the firing time.
- the firing is performed in an atmosphere containing ammonia or hydrogen, the above-mentioned alkoxysilane
- the remaining silanol groups in the product obtained by the hydrolysis and dehydration condensation reaction of (A) react to be hydrogenated or nitrided, which can reduce the hygroscopicity of the porous silica thin film.
- the silica-organic polymer composite thin film and the porous silica thin film obtained by using the composition of the present invention can be processed into an arbitrary shape by a known method used in a current semiconductor device manufacturing process. Can be done. It is also effective to subject the obtained porous silica thin film to a surface treatment with a silylation agent to reduce water absorption and improve adhesion to other substances.
- Examples of silinolelating agents that can be used include trimethyl ethoxy silane, trimethyl ethoxy silane, dimethyl dimethoxy silane, dimethyl ethoxy silane, methyl triethoxy.
- Alkoxy silanes such as xyloxysilane, phenyl trimethoxy xylan, phenyl triethoxy silane, trimethyl chloro silane, dimethyl chloro silane, methino ole tri chloro Locylane, Methylcirocloane, Dimethinochlore Locirane, Dimethinolebi Noreclorosilane, methylvinyl dichlorosilane, methinochlor
- Mouth Mouth Silanes Hexametyldisilazane, N, N'-bis (trimethylsilyl phenol) urea, N-trimethylsilyl phenol acetamide, dimethynole trimethylsilyl
- Examples include silazanes such as rumin, getyl triethylsilyllamin, and trimethylsilylimidazole.
- Examples of silylation methods include application, dipping, and steam exposure.
- the composition of the present invention By using the composition of the present invention, special equipment is used. Without difficulty, the method can be easily implemented in the current semiconductor device manufacturing process, and it has a low-permittivity silica-organic polymer composite thin film and small pores and a high porosity. In addition, since a porous dielectric thin film having a low dielectric constant can be obtained, the composition of the present invention is used as an insulating layer for a multilayer wiring structure having a low dielectric constant, particularly for an LSI multilayer wiring structure. It is extremely useful as a raw material for the insulating layer.
- the evaluation of the silica-organic polymer composite thin film and the porous silica thin film was performed using the following apparatus.
- N 2 BET A nitrogen adsorption type surface area measuring device manufactured by Shimadzu Corporation, Japan was used.
- the number-average molecular weight (Mn) of the number of organic polymers used in the present invention was measured by gel permeation chromatography (GPC) using tetrahydrofuran as a carrier solvent, and was measured by standard single-molecule analysis. It was determined using dispersed polystyrene.
- TEOS Tetraetoxysilane
- MT ES Methyl triethoxysilane
- TMO S Tetramethoxysilane
- E A Echinole acetate
- Example 1 The same operation as in Example 1 was performed except that the types of the alkoxysilane, the organic polymer, and the solvent were changed. Table 1 shows the types and amounts of the alkoxysilanes, organic polymers and solvents used, and the results.
- the gel weight is a calculated value of the weight of the product obtained when all of the starting alkoxysilanes undergo hydrolysis and dehydration condensation.
- the obtained organic polymer thin films were all transparent.
- Example 2 The same operation as in Example 1 was performed except that polyvinyl ethyl ether (PVEE) and polyvinylidene fluoride (PVdF) were used as the organic polymers. Table 2 shows the results. In Comparative Examples 1 to 4, a transparent and homogeneous gel could not be obtained.
- PVEE polyvinyl ethyl ether
- PVdF polyvinylidene fluoride
- Polyethylene glycol (number-average molecular weight 200,000), polycaprolactone (number-average molecular weight 600,000) or polypentamethylene-hexamethylene carbonate (number-average molecular weight 200,000) 0 17 g of N, N-dimethylformamide (DMF), N-methylvinylidone ( ⁇ ), ethyl acetate or tetrahydrofuran (THF) with DMF mixture 1.
- DMF N-dimethylformamide
- ⁇ N-methylvinylidone
- ⁇ ethyl acetate or tetrahydrofuran
- THF tetrahydrofuran
- Ethyl silicate 40 (manufactured by Colcoat Co., Japan) 0.43 g, polypropylene glycol (number average molecular weight 400 000) 0.17 g was dimethylaminoformamide 1. It was dissolved in a mixed solvent of 2 g and 0.8 g of ethanol. 0.2 g of a 0.1 N aqueous ammonia solution was added to this solution, and the mixture was cast in a Petri dish to form a thin film. The Petri dish was sealed, and left at room temperature overnight. Then, ethyl silicate 40 was gelled.
- Ethyl silicate 40 (manufactured by Colcoat, Japan) 0.43 g and polystyrene (number average molecular weight 800.000) 0.17 g are dissolved in methylethylketone 2.0 g.
- the ethyl silicate 40 was allowed to gel overnight. Thereafter, the film was gradually heated to 120 ° C with a temperature of 60 ° C, and the thin film was dried by depressurizing the film while maintaining the temperature at 120 ° C. An organic polymer composite thin film was obtained.
- TEOS tetraethoxysilane
- polyethylene glycol number-average molecular weight: 200,000
- ether acetate weight ratio: 21
- 0.5 g of water and 0.15 g of 0.1 N hydrochloric acid were added thereto, followed by stirring for 4 hours.
- the resulting solution was spin-coated on a silicon wafer with a titanium nitride thin film at a speed of 150 rpm to form a thin film, and the thin film was heated at 120 ° C for 1 hour.
- a porous silica thin film was manufactured in the same manner as in Example 28 except that the amount of polyethylene dalicol was changed, and its dielectric constant was measured. Table 5 shows the results. The dielectric constant of each of the obtained porous silica thin films showed a low value.
- MTMS methyl trimethoxysilane
- poly (ethylene glycol) number average molecular weight: 200,000)
- N-methylpyrrolidone propylene glycol methyl acetate
- 2Z1 / 4 weight ratio: 2Z1 / 4
- 0.30 g of water and 0.15 g of 0.1 N nitric acid were added, and the mixture was stirred for 3 hours.
- the resulting solution is spin-coated on a silicon wafer with a titanium nitride thin film at a speed of 150 rpm to form a thin film, and the obtained thin film is heated at 120 ° C for 1 hour.
- a porous silica thin film was manufactured in the same manner as in Example 31 except that the amount of added polyethylene dalicol was changed, and the dielectric constant was measured. Table 6 shows the results. The dielectric constants of the obtained porous silica thin films were all low. Table 6
- MTMS methyltrimethoxysilane
- polyethylene glycol number average molecular weight: 20000
- MTMS methyltrimethoxysilane
- 0.1 N nitric acid 0.15 g were added, and the mixture was stirred for 2 hours.
- This solution was spin-coated on a silicon wafer at a speed of 150 rotations per minute to form a thin film, and the thin film was heated at 120 ° C for 1 hour to gel MTMS. The solvent was removed to obtain a silica-organic polymer composite thin film having a thickness of 0.887 m.
- methyltrimethoxysilane and 0.1 g of polysebacic anhydride are dissolved in 1.0 g of N, N-dimethylmethylphenolamide and added to water.
- 0.05 g and 0.1 g of 0.1 N hydrochloric acid were added, and the mixture was stirred at room temperature for 1 hour.
- This solution was cast on a watch plate made of polytetrafluoroethylene to form a thin film, and the obtained thin film was allowed to stand at 100 ° C. for 1 hour to gel methyltrimethoxysilane. Further, the thin film was vacuum-dried at 180 ° C to obtain a silica-organic polymer composite thin film.
- the composite film was transparent.
- the alkoxysilane-organic polymer composition for producing an insulating thin film of the present invention is molded to form a thin film, and the alkoxysilane in the obtained thin film is hydrolyzed and dehydrated and condensed to gel the alkoxysilane.
- the silica-organic polymer composite thin film obtained by removing the remaining solvent and the porous silica thin film obtained by removing the organic polymer from the composite thin film are made of a dielectric material. It has a low efficiency and is not only suitable as an insulating layer for a multilayer wiring structure of a semiconductor device, but also can be manufactured by a method which can be easily implemented in a current semiconductor device manufacturing process. Therefore, the alkoxysilane-organic polymer composition for producing an insulating thin film of the present invention can be extremely advantageously used in producing an insulating layer for a multilayer wiring structure of a semiconductor device such as LSI.
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Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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US09/423,798 US6448331B1 (en) | 1997-07-15 | 1998-07-15 | Alkoxysilane/organic polymer composition for thin insulating film production and use thereof |
AU82427/98A AU8242798A (en) | 1997-07-15 | 1998-07-15 | Alkoxysilane/organic polymer composition for thin insulating film production anduse thereof |
CA002289782A CA2289782C (en) | 1997-07-15 | 1998-07-15 | Alkoxysilane/organic polymer composition for use in producing an insulating thin film and use thereof |
JP50691499A JP4093596B2 (ja) | 1997-07-15 | 1998-07-15 | 絶縁薄膜製造用アルコキシシラン−有機ポリマー組成物、及びその用途 |
DE69827259T DE69827259T2 (de) | 1997-07-15 | 1998-07-15 | Zusammensetzungen aus alkoxysilan und organischem polymer zur herstellung von dünnen isolierenden schichten und deren verwendung |
EP98932538A EP0997497B1 (en) | 1997-07-15 | 1998-07-15 | Alkoxysilane/organic polymer composition for thin insulating film production and use thereof |
AT98932538T ATE280806T1 (de) | 1997-07-15 | 1998-07-15 | Zusammensetzungen aus alkoxysilan und organischem polymer zur herstellung von dünnen isolierenden schichten und deren verwendung |
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JP9/189767 | 1997-07-15 | ||
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WO1999003926A1 true WO1999003926A1 (fr) | 1999-01-28 |
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PCT/JP1998/003186 WO1999003926A1 (fr) | 1997-07-15 | 1998-07-15 | Composition alcoxysilane/polymere organique destinee a la production de fines pellicules isolantes et procede d'utilisation |
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CN (1) | CN1125138C (ja) |
AT (1) | ATE280806T1 (ja) |
AU (1) | AU8242798A (ja) |
CA (1) | CA2289782C (ja) |
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Also Published As
Publication number | Publication date |
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KR20010012887A (ko) | 2001-02-26 |
DE69827259T2 (de) | 2006-02-16 |
EP0997497B1 (en) | 2004-10-27 |
CA2289782A1 (en) | 1999-01-28 |
RU2180671C2 (ru) | 2002-03-20 |
JP4093596B2 (ja) | 2008-06-04 |
CA2289782C (en) | 2004-07-13 |
CN1125138C (zh) | 2003-10-22 |
EP0997497A1 (en) | 2000-05-03 |
ATE280806T1 (de) | 2004-11-15 |
CN1257529A (zh) | 2000-06-21 |
KR100334150B1 (ko) | 2002-04-25 |
AU8242798A (en) | 1999-02-10 |
DE69827259D1 (de) | 2004-12-02 |
EP0997497A4 (en) | 2001-07-11 |
TW401376B (en) | 2000-08-11 |
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