WO2006016672A1 - フラットバンドシフトの少ないシリカ質膜およびその製造法 - Google Patents
フラットバンドシフトの少ないシリカ質膜およびその製造法 Download PDFInfo
- Publication number
- WO2006016672A1 WO2006016672A1 PCT/JP2005/014819 JP2005014819W WO2006016672A1 WO 2006016672 A1 WO2006016672 A1 WO 2006016672A1 JP 2005014819 W JP2005014819 W JP 2005014819W WO 2006016672 A1 WO2006016672 A1 WO 2006016672A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- aluminum
- siliceous film
- perhydropolysilazane
- group
- compound
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 47
- -1 aluminum compound Chemical class 0.000 claims abstract description 32
- 239000008199 coating composition Substances 0.000 claims abstract description 24
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 239000012298 atmosphere Substances 0.000 claims abstract description 15
- 238000010304 firing Methods 0.000 claims abstract description 15
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 13
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 7
- 229920001709 polysilazane Polymers 0.000 claims description 27
- 150000001875 compounds Chemical class 0.000 claims description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 14
- 239000002904 solvent Substances 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 125000000962 organic group Chemical group 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 125000004429 atom Chemical group 0.000 claims description 4
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 4
- 239000011229 interlayer Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 125000005843 halogen group Chemical group 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000010408 film Substances 0.000 description 62
- 239000000243 solution Substances 0.000 description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 11
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical class CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 4
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 4
- 239000012299 nitrogen atmosphere Substances 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 3
- FYGHSUNMUKGBRK-UHFFFAOYSA-N 1,2,3-trimethylbenzene Chemical compound CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 description 2
- XLLIQLLCWZCATF-UHFFFAOYSA-N 2-methoxyethyl acetate Chemical compound COCCOC(C)=O XLLIQLLCWZCATF-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- HGCIXCUEYOPUTN-UHFFFAOYSA-N cyclohexene Chemical compound C1CCC=CC1 HGCIXCUEYOPUTN-UHFFFAOYSA-N 0.000 description 2
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 description 2
- MTHHTRVJDXYJHE-UHFFFAOYSA-N di(butan-2-yloxy)alumanyl triethyl silicate Chemical compound CCO[Si](OCC)(OCC)O[Al](OC(C)CC)OC(C)CC MTHHTRVJDXYJHE-UHFFFAOYSA-N 0.000 description 2
- IIEWJVIFRVWJOD-UHFFFAOYSA-N ethylcyclohexane Chemical compound CCC1CCCCC1 IIEWJVIFRVWJOD-UHFFFAOYSA-N 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 2
- 239000002808 molecular sieve Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- BKIMMITUMNQMOS-UHFFFAOYSA-N nonane Chemical class CCCCCCCCC BKIMMITUMNQMOS-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- CFJYNSNXFXLKNS-UHFFFAOYSA-N p-menthane Chemical compound CC(C)C1CCC(C)CC1 CFJYNSNXFXLKNS-UHFFFAOYSA-N 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- POILWHVDKZOXJZ-ARJAWSKDSA-M (z)-4-oxopent-2-en-2-olate Chemical compound C\C([O-])=C\C(C)=O POILWHVDKZOXJZ-ARJAWSKDSA-M 0.000 description 1
- VIDOPANCAUPXNH-UHFFFAOYSA-N 1,2,3-triethylbenzene Chemical compound CCC1=CC=CC(CC)=C1CC VIDOPANCAUPXNH-UHFFFAOYSA-N 0.000 description 1
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- NHTMVDHEPJAVLT-UHFFFAOYSA-N Isooctane Chemical class CC(C)CC(C)(C)C NHTMVDHEPJAVLT-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- 101100020663 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) ppm-1 gene Proteins 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910007991 Si-N Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910006294 Si—N Inorganic materials 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- CECABOMBVQNBEC-UHFFFAOYSA-K aluminium iodide Chemical compound I[Al](I)I CECABOMBVQNBEC-UHFFFAOYSA-K 0.000 description 1
- JPUHCPXFQIXLMW-UHFFFAOYSA-N aluminium triethoxide Chemical compound CCO[Al](OCC)OCC JPUHCPXFQIXLMW-UHFFFAOYSA-N 0.000 description 1
- MQPPCKJJFDNPHJ-UHFFFAOYSA-K aluminum;3-oxohexanoate Chemical group [Al+3].CCCC(=O)CC([O-])=O.CCCC(=O)CC([O-])=O.CCCC(=O)CC([O-])=O MQPPCKJJFDNPHJ-UHFFFAOYSA-K 0.000 description 1
- IKHOZNOYZQPPCK-UHFFFAOYSA-K aluminum;4,4-diethyl-3-oxohexanoate Chemical compound [Al+3].CCC(CC)(CC)C(=O)CC([O-])=O.CCC(CC)(CC)C(=O)CC([O-])=O.CCC(CC)(CC)C(=O)CC([O-])=O IKHOZNOYZQPPCK-UHFFFAOYSA-K 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000002484 cyclic voltammetry Methods 0.000 description 1
- DYHSMQWCZLNWGO-UHFFFAOYSA-N di(propan-2-yloxy)alumane Chemical compound CC(C)O[AlH]OC(C)C DYHSMQWCZLNWGO-UHFFFAOYSA-N 0.000 description 1
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- POLCUAVZOMRGSN-UHFFFAOYSA-N dipropyl ether Chemical compound CCCOCCC POLCUAVZOMRGSN-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003759 ester based solvent Substances 0.000 description 1
- 239000004210 ether based solvent Substances 0.000 description 1
- 125000005909 ethyl alcohol group Chemical group 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 229940087305 limonene Drugs 0.000 description 1
- 235000001510 limonene Nutrition 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical class CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229930004008 p-menthane Natural products 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229930195734 saturated hydrocarbon Chemical class 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 description 1
- UAEJRRZPRZCUBE-UHFFFAOYSA-N trimethoxyalumane Chemical compound [Al+3].[O-]C.[O-]C.[O-]C UAEJRRZPRZCUBE-UHFFFAOYSA-N 0.000 description 1
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 1
- OBROYCQXICMORW-UHFFFAOYSA-N tripropoxyalumane Chemical compound [Al+3].CCC[O-].CCC[O-].CCC[O-] OBROYCQXICMORW-UHFFFAOYSA-N 0.000 description 1
- CNWZYDSEVLFSMS-UHFFFAOYSA-N tripropylalumane Chemical compound CCC[Al](CCC)CCC CNWZYDSEVLFSMS-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/60—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule in which all the silicon atoms are connected by linkages other than oxygen atoms
- C08G77/62—Nitrogen atoms
-
- 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
- C09D183/16—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 in which all the silicon atoms are connected by linkages other than oxygen atoms
-
- 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
- H01L21/02112—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 characterised by the material of the layer
- H01L21/02123—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 characterised by the material of the layer the material containing silicon
- H01L21/02126—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 characterised by the material of the layer the material containing silicon the material containing Si, O, and at least one of H, N, C, F, or other non-metal elements, e.g. SiOC, SiOC:H or SiONC
-
- 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
- H01L21/02112—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 characterised by the material of the layer
- H01L21/02123—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 characterised by the material of the layer the material containing silicon
- H01L21/02142—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 characterised by the material of the layer the material containing silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides
- H01L21/02145—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 characterised by the material of the layer the material containing silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides the material containing aluminium, e.g. AlSiOx
-
- 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
- H01L21/02222—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 the compound being a silazane
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- 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
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02282—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process liquid deposition, e.g. spin-coating, sol-gel techniques, spray coating
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- 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
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02318—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment
- H01L21/02337—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment treatment by exposure to a gas or vapour
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/312—Organic layers, e.g. photoresist
- H01L21/3121—Layers comprising organo-silicon compounds
- H01L21/3125—Layers comprising organo-silicon compounds layers comprising silazane compounds
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/314—Inorganic layers
- H01L21/316—Inorganic layers composed of oxides or glassy oxides or oxide based glass
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/314—Inorganic layers
- H01L21/316—Inorganic layers composed of oxides or glassy oxides or oxide based glass
- H01L21/31604—Deposition from a gas or vapour
- H01L21/31616—Deposition of Al2O3
- H01L21/3162—Deposition of Al2O3 on a silicon body
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—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
- H01L21/02112—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 characterised by the material of the layer
- H01L21/02123—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 characterised by the material of the layer the material containing silicon
- H01L21/02164—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 characterised by the material of the layer the material containing silicon the material being a silicon oxide, e.g. SiO2
Definitions
- the present invention relates to a method for producing a siliceous film. More specifically, the present invention relates to a method for producing a siliceous film having a small flat band shift value and excellent insulating properties.
- an electronic device such as a semiconductor device
- semiconductor elements such as transistors, resistors, and the like are arranged on a substrate. These must be electrically insulated. Therefore, a region for separating the elements is necessary between these elements, and this is called an isolation region.
- a siliceous film is generally used as a material for forming such an isolation region.
- the siliceous film produced by these methods has a flat band shift of the CV curve due to residual nitrogen, carbon, and hydrogen, which is thought to be caused by the raw material polysilazane and solvent.
- the siliceous film formed by the method there is room for improvement in the insulation properties that are high.
- the heating temperature is required to be kept low by limiting the heat resistance and oxidation resistance of the substrate to be applied, the residual nitrogen, carbon, or hydrogen tends to increase.
- Patent Document 1 Patent No. 3511024
- Patent Document 2 Japanese Patent No. 3178412
- Patent Document 3 JP-A-8-5963
- Patent Document 4 Japanese Patent Application Laid-Open No. 11 105185
- Patent Document 5 JP-A-4 63833
- Patent Document 6 JP-A-9 31333
- Patent Document 7 Japanese Patent Application Laid-Open No. 8-176511
- Patent Document 8 JP-A-8-176512
- Patent Document 9 JP-A-5-345826
- the present invention solves such problems and provides a method for producing a siliceous film having a small flat band shift value, that is, excellent electrical characteristics such as insulating characteristics.
- the coating composition according to the present invention has a number average molecular weight of 100 to 50,000, a group strength including a perhydropolysilazane and a modified perhydropolysilazane.
- the selected one or more polysilazane compounds, an aluminum compound, and the aluminum content is not less than lOppb and not more than lOOppm in terms of a molar ratio of aluminum atoms to silicon atoms contained in the polysilazane compound.
- the method for producing a siliceous film according to the present invention includes at least one polysilazane salt having a number average molecular weight of 100 to 50,000, wherein perhydropolysilazane and modified perhydropolysilazane force are also selected.
- a coating solution containing a compound, an aluminum compound, and a solvent, and having an aluminum content of not less than lOppb and not more than lOOppm in terms of a mole ratio of aluminum atoms to silicon atoms contained in the polysilazane compound is applied to the substrate. And firing in an atmosphere containing water vapor, oxygen, or a mixed gas thereof.
- the siliceous film according to the present invention is a siliceous film obtained by applying a coating liquid containing a polysilazane compound and an aluminum compound to a substrate and baking it in an oxidizing atmosphere.
- the aluminum content is characterized in that the molar ratio of aluminum atoms to silicon atoms is not less than lOppb and not more than lOOppm.
- the invention's effect it is possible to produce a siliceous film having a small flat band shift value, whereby a semiconductor element having excellent electrical characteristics, for example, an element isolation film or a gate insulating film having excellent insulating characteristics. A film can be formed.
- perhydropolysilazane or modified perhydropolysilazane can also be used as needed.
- One or more polysilazane compounds can be used as needed.
- perhydropolysilazane is represented by the following general formula (I).
- n is a number representing the degree of polymerization.
- a modified perhydropolysilazane obtained by modifying the perhydropolysilazane of the general formula (I) with a silazane compound, alcohol, or amine can be used.
- perhydropolysilazane is preferably used in order to reduce the flat band shift of the siliceous film obtained using the coating composition. This is because when a polysilazane compound containing a relatively large amount of organic groups that contains organic groups other than hydrogen in the main chain is used, atoms such as carbon derived from the organic groups are contained in the siliceous film. This is because the effect of the present invention may be reduced.
- a modified perhydropolysilazane obtained by modifying a part of perhydropolysilazane from the viewpoints of the coating property of the coating solution during production, stability during storage, and the like.
- the compound that modifies perhydropolysilazane include compounds such as hexamethyldisilazane, methyl alcohol, ethyl alcohol, and ethylenediamine.
- a modified perhydropolysilazane can be obtained by substituting a part of hydrogen of perhydropolysilazane, particularly terminal hydrogen, using these.
- modified perhydropolysilazanes are described in Patent Documents 5 to 9.
- the weight average molecular weight of the perhydropolysilazane or modified perhydropolysilazane used in the coating composition according to the present invention is determined by the coating property of the coating composition, particularly when coated by spin coating. From the perspective of 100-50, 00 0, preferred ⁇ is 500 to 20,000.
- these polysilazane compounds are dissolved in a solvent.
- the solvent used at this time is preferably an inert organic solvent without active hydrogen.
- organic solvents include aromatic hydrocarbon solvents such as benzene, toluene, xylene, ethylbenzene, jetylbenzene, trimethylbenzene, and triethylbenzene; cyclohexane, cyclohexene, decahydronaphthalene, and ethylcyclohexane.
- Aliphatic hydrocarbon solvents such as xane, methylcyclohexane, p-menthane, dipentene (limonene), pinene; n pentane, i pentane, n-hexane, i monohexane, n-heptane, i-heptane, n Octane, i-octane, n-nonane, i-nonane, n-decane, saturated hydrocarbon compounds such as decane, ether solvents such as dipropyl ether and dibuchel ether; ketone solvents such as methyl isobutyl ketone; propylene And ester solvents such as glycol monomethyl ether acetate It is. Of these, those capable of sufficiently dissolving the aluminum compound described later are particularly preferred.
- the aluminum compound that can be used in the present invention is not particularly limited, but is preferably dissolved in the polysilazane solution. Therefore, it can be appropriately selected depending on the solvent used in the coating composition.
- the aluminum compound that can be used in the present invention can be represented, for example, by the following general formula.
- ⁇ , And Zeta 3 are each independently hydrogen, a hydroxyl group, a halogen atom, alkyl group, cycloalkyl group, Ariru group, Aruke - group, Shikuroaruke - group, an alkoxy group, also selected ⁇ cetyl ⁇ Seth sulfonate functionalized Group, And 2 or 3 of ⁇ 3 may form a cyclic structure. Further, ⁇ ⁇ ⁇ 2 and ⁇ 3 may be an organic group including a key element.
- the aluminum compounds in the present invention are preferably those represented by the following general formulas ( ⁇ -1) to ( ⁇ -3).
- R 2 and R 3 are each independently hydrogen, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group, or an aryl group, and X 1 , X 2 , and X 3 are each independently Fluorine, chlorine, or iodine.
- examples of the aluminum compound used in the present invention include trimethoxyaluminum, triethoxyaluminum, triisopropoxyaluminum, tri-n-propoxyaluminum, trimethylaluminum, triethylaluminum, triisopropylaluminum. -Um, tri-n-propylaluminum, aluminum fluoride, aluminum chloride, aluminum iodide, triacetylacetonate aluminum, triethylacetoacetate aluminum, and others.
- an aluminum compound containing silicon such as di-s-butoxyaluminoxy-triethoxysilane, can be used.
- the amount of applied force of these aluminum compounds is not particularly limited as long as the effects of the present invention are not impaired.
- the molar ratio of the aluminum atom to the silicon atom contained in the polysilazane compound is ⁇ pb or more, preferably lOOppb or more. More preferred.
- the molar ratio of the aluminum atom to the silicon atom contained in the polysilazane compound is preferably lOOppm or less, and more preferably lOppm or less. Note that the amount of aluminum compound added is much smaller than that described in Patent Document 3 or 4, and silica obtained by such a small amount of aluminum compound is used. It was surprising that the properties of the membrane were dramatically improved.
- the aluminum compound can be added to the coating composition by any method. Specifically, a solid aluminum compound can be added and dissolved in the coating composition, or the aluminum compound can be dissolved in a solvent and mixed with the coating composition. When the aluminum compound is dissolved in a solvent, a solvent that can be used when dissolving the polysilazane compound can be used. At this time, the solvent used for dissolving the polysilazane compound may be different from the solvent used for preparing the aluminum compound solution.
- Aluminum- There are no particular restrictions on the temperature or pressure when adding the sulfur compound, but generally 0 to 200 ° C.
- the method for producing a siliceous film according to the present invention comprises applying the above-described coating composition to a substrate.
- the siliceous film is formed by firing.
- the surface material of the substrate used is not particularly limited, and examples thereof include bare silicon and a silicon wafer on which a thermal acid film or a silicon nitride film is formed as required. If necessary, a structure such as a trench isolation groove may be formed on the substrate.
- Examples of methods for applying the coating composition to the substrate surface include conventionally known methods such as spin coating, dipping, spraying, and transfer.
- the coating film formed on the substrate surface is baked in an atmosphere containing water vapor, oxygen, or a mixed gas thereof, that is, in an oxidizing atmosphere.
- an inert gas such as nitrogen or helium may be mixed in the atmosphere as long as the effects of the present invention are not impaired.
- the firing conditions are preferably carried out under relatively strong acidic conditions in order to minimize impurity elements remaining in the siliceous film, for example, carbon, hydrogen, nitrogen and the like. .
- the oxygen content is preferably 1% or more based on volume.
- the method of the present invention when firing is performed in an atmosphere containing water vapor, it is preferably 0.1% or more based on the volume, more preferably 1% or more. . In the present invention, it is particularly preferable to perform firing in a mixed gas atmosphere containing oxygen and water vapor.
- the firing temperature needs to be a temperature at which the polysilazane compound can be added to the siliceous film. Generally 100 to 1,200. C, preferred ⁇ is 300 ⁇ 1,000. Baking with C. Here, the lower the firing temperature, the more prominent the flat band shift improving effect is compared to the conventional manufacturing method. In addition, the higher the firing temperature, the smaller the flat band shift tends to obtain a siliceous film having excellent electrical characteristics.
- the firing time is a force that can be appropriately selected depending on the firing temperature, and is generally 5 minutes to 10 hours. Here, from the viewpoint of production efficiency in production, it is preferably 1 hour or less.
- the siliceous film produced by the production method according to the present invention has a small flat band shift value. Such characteristics are presumably because aluminum oxide derived from the aluminum compound is uniformly dispersed in the formed siliceous film. For this reason, the siliceous film according to the present invention is excellent in electrical characteristics, for example, insulation characteristics.
- the siliceous film and the substrate with the siliceous film according to the present invention can be produced, for example, by the method described above.
- the ratio of the aluminum atom in the aluminum compound used as a raw material and the key atom contained in the polysilazane compound does not change even in the finally obtained siliceous film.
- the siliceous film of the present invention can be produced by setting the aluminum compound used in the production to have a ratio of aluminum atoms to silicon atoms of ⁇ pb or more and lOO ppm or less.
- a siliceous film having a low aluminum content is formed, and aluminum atoms are introduced into the siliceous film by another means, for example, ion implantation, to obtain a final aluminum content.
- ion implantation ion implantation
- siliceous films or substrates with siliceous films have excellent electrical characteristics, and various semiconductor elements such as element isolation films, interlayer dielectric films such as premetal deelectric films and intermetal depolar films, liquid crystals It is useful as a gate insulating film for display devices
- a reactor equipped with a gas blowing tube, a mechano-car stirrer and a single condenser was prepared in a four-necked flask with an internal volume of 2 liters. After the inside of the reactor was replaced with dry nitrogen, 1500 ml of dry pyridine was introduced into a four-necked flask and cooled on ice. Next, when dichlorosilane lOOg is added to pyridine, a white solid adduct (SiH CI-2C H N) is produced.
- reaction mixture was further ice-cooled, and 70 g of ammonia was added to the reaction mixture while stirring. Blowed in. Subsequently, dry nitrogen was blown into the reaction mixture for 30 minutes to remove excess ammonia.
- reaction mixture was filtered under reduced pressure using a Buchner funnel under a dry nitrogen atmosphere to obtain 1200 ml of a filtrate.
- pyridine was distilled off with an evaporator to obtain 40 g of perhydropolysilazane.
- the number average molecular weight in terms of polystyrene was 800.
- the infrared absorption spectrum of this perhydropolysilazane was measured and found to have absorption based on N—H bonds of wave numbers (cm- 1 ) 3350 and 1180, absorption based on Si—H bonds of 2170, Si—N of 1020 to 820 — Absorption based on Si bond was observed.
- a substrate in which a thermal oxidation film of lOnm was formed on a p-type silicon wafer having a diameter of 8 inches was prepared, and the polysilazane solution was formed on the substrate using a spin coater under conditions of main spin lOOOrpm Z20 seconds. Applied. After coating, the substrate was dried on a hot plate by heating at 150 ° CZ for 3 minutes. Subsequently, the substrate was heated to form a siliceous film having a thickness of 500 nm. The heating conditions were as follows.
- Heating condition 1 Heated at 400 ° C for 15 minutes in an atmosphere with a water vapor concentration of 80 vol% and an oxygen concentration of 20 vol%.
- Heating condition 2 Heated at 800 ° C for 15 minutes in an atmosphere with a water vapor concentration of 80 vol% and an oxygen concentration of 20 vol%.
- Heating condition 3 Heated at 400 ° C for 15 minutes in an atmosphere with a water vapor concentration of 80 vol% and an oxygen concentration of 20 vol%, then further heated at 800 ° C for 30 minutes in a dry nitrogen atmosphere.
- Heating condition 4 Heated at 400 ° C for 30 minutes in a nitrogen atmosphere.
- a flat band shift was measured for each of the obtained substrates.
- the thickness of each substrate was set to 5 using an ellipsometer (Model—M44 manufactured by JA Woolam).
- the CV curve and the flat band shift value based on the CV curve were measured using an automatic mercury probe CVZIV measuring device (SSM495, manufactured by Nippon SSM Co., Ltd.).
- the applied voltage for CV measurement was in the range of ⁇ 100 to + 100V.
- the flat band value of the high-density plasma CVD film was measured in the same manner as in Comparative Example 1.
- Tri (isopropoxy) aluminum lg was mixed with dehydrated dibutyl ether lOOg to obtain a tri (isopropoxy) aluminum solution.
- the flat band value was measured in the same manner as in Example 1 except that tri (isopropoxy) aluminum was replaced with tri (acetylacetonate) aluminum and the addition amount of the aluminum compound solution was changed to 43 mg.
- Example 1 is the same as Example 1 except that tri (isopropoxy) anolium was replaced with (ethinoreacetoacetate) di (isopropoxy) aluminum and the amount of added force of the aluminum compound solution was changed to 34 mg. Similarly, the flat band value was measured.
- the flat band value was measured in the same manner as in Example 1 except that tri (isopropoxy) aluminum was replaced with tri (ethylacetoacetate) aluminum and the addition amount of the aluminum compound solution was replaced with 56 mg.
- the flat band value was measured in the same manner as in Example 1 except that tri (isopropoxy) aluminum was replaced with di-s-butoxyaluminoxy-triethoxysilane and the addition amount of the aluminum compound solution was changed to 47 mg.
- the flat band value was measured in the same manner as in Example 1 except that the amount of tri (isopropoxy) aluminum solution added to the polysilazane solution was changed to 2.7 g.
- Example 1 3ppm -1 1.2-8.5-9.5 -38.2
- Example 2 3ppm -10.0-6.2 -1 1.0 -44.0
- Example 3 3ppm -9.3 -9.0 -10.1 -40.5
- Example 4 3ppm -1 1.0 -7.8-10.2- 46.2
- Example 5 «jppm -9.9 -7.2 -8.9 -39.5
- Example 6 3ppm -10.4 -8.8 -10.4 -50.2 Comparative Example 3 3ppb -19.0 -13.4 -22.4
- AI content is the atomic ratio of aluminum to key
- the aluminum content of the siliceous film obtained under each firing condition was measured using a secondary ion mass spectrometer (type 6650 manufactured by Physical Electronics) and a stylus type surface shape.
- a secondary ion mass spectrometer type 6650 manufactured by Physical Electronics
- the aluminum content almost the same as the coating solution was measured, and the aluminum content of the coating composition was the siliceous film produced using the coating composition. It was found to be consistent with the aluminum content.
- the aluminum content is constant in the thickness direction of the siliceous film, and it was found that aluminum atoms are uniformly distributed in the siliceous film.
- the production method according to the present invention realizes a siliceous film having a small flat band shift value, that is, a siliceous film having excellent insulating properties.
- the siliceous film produced by this production method is a semiconductor. It can be used as an element, for example, an element isolation film, an interlayer insulating film such as a pre-metal de-electric film or an inter-dielectric film, and a gate insulating film of a display device such as a liquid crystal.
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Abstract
Description
Claims
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US11/629,592 US20070259106A1 (en) | 2004-08-13 | 2005-08-12 | Polysilazane coating composition and siliceous film |
EP05780260.5A EP1785459B1 (en) | 2004-08-13 | 2005-08-12 | Siliceous film with smaller flat band shift and method for producing same |
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JP2004235792A JP2006054353A (ja) | 2004-08-13 | 2004-08-13 | フラットバンドシフトの少ないシリカ質膜およびその製造法 |
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EP (1) | EP1785459B1 (ja) |
JP (1) | JP2006054353A (ja) |
KR (1) | KR20070044051A (ja) |
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WO2012117990A1 (ja) * | 2011-03-01 | 2012-09-07 | Azエレクトロニックマテリアルズ株式会社 | 低屈折率膜形成用組成物、低屈折率膜の形成方法、及び該形成方法により形成された低屈折率膜並びに反射防止膜 |
JP2013046009A (ja) * | 2011-08-26 | 2013-03-04 | Shin Etsu Chem Co Ltd | 太陽電池及びその製造方法 |
WO2013077255A1 (ja) * | 2011-11-24 | 2013-05-30 | コニカミノルタ株式会社 | ガスバリアーフィルム及び電子機器 |
KR101412453B1 (ko) * | 2006-09-08 | 2014-06-30 | 에이제토 엘렉토로닉 마티리알즈 아이피 (재팬) 가부시키가이샤 | 실리카질 막 형성용 조성물 및 이를 사용한 실리카질 막의 제조법 |
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Also Published As
Publication number | Publication date |
---|---|
US20070259106A1 (en) | 2007-11-08 |
TW200610056A (en) | 2006-03-16 |
EP1785459A4 (en) | 2011-10-19 |
KR20070044051A (ko) | 2007-04-26 |
CN101001930A (zh) | 2007-07-18 |
EP1785459B1 (en) | 2016-12-28 |
TWI389208B (zh) | 2013-03-11 |
EP1785459A1 (en) | 2007-05-16 |
JP2006054353A (ja) | 2006-02-23 |
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