TWI784168B - 蝕刻劑組合物及矽烷化合物 - Google Patents
蝕刻劑組合物及矽烷化合物 Download PDFInfo
- Publication number
- TWI784168B TWI784168B TW108118094A TW108118094A TWI784168B TW I784168 B TWI784168 B TW I784168B TW 108118094 A TW108118094 A TW 108118094A TW 108118094 A TW108118094 A TW 108118094A TW I784168 B TWI784168 B TW I784168B
- Authority
- TW
- Taiwan
- Prior art keywords
- group
- etchant composition
- silane compound
- alkyl
- alkylene
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 59
- 229910000077 silane Inorganic materials 0.000 title claims abstract description 56
- -1 silane compound Chemical class 0.000 title claims abstract description 48
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000001257 hydrogen Substances 0.000 claims abstract description 29
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 29
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 20
- 239000000126 substance Substances 0.000 claims abstract description 14
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 12
- 125000001183 hydrocarbyl group Chemical group 0.000 claims abstract description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 6
- 125000002947 alkylene group Chemical group 0.000 claims description 21
- 125000003118 aryl group Chemical group 0.000 claims description 21
- 125000000217 alkyl group Chemical group 0.000 claims description 19
- 150000003863 ammonium salts Chemical class 0.000 claims description 11
- 125000005910 alkyl carbonate group Chemical group 0.000 claims description 7
- 229910052736 halogen Inorganic materials 0.000 claims description 5
- 150000002367 halogens Chemical class 0.000 claims description 5
- 125000003860 C1-C20 alkoxy group Chemical group 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 125000003837 (C1-C20) alkyl group Chemical group 0.000 claims description 3
- 125000006833 (C1-C5) alkylene group Chemical group 0.000 claims description 3
- 125000005275 alkylenearyl group Chemical group 0.000 claims description 2
- 150000002431 hydrogen Chemical class 0.000 claims 10
- 150000001335 aliphatic alkanes Chemical group 0.000 claims 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract description 19
- 125000000743 hydrocarbylene group Chemical group 0.000 abstract 1
- 150000004767 nitrides Chemical class 0.000 description 36
- 238000005530 etching Methods 0.000 description 26
- 238000000034 method Methods 0.000 description 22
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 18
- 230000008569 process Effects 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 13
- 229910052581 Si3N4 Inorganic materials 0.000 description 12
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 12
- 229910052814 silicon oxide Inorganic materials 0.000 description 12
- 238000003756 stirring Methods 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 10
- 238000003786 synthesis reaction Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000005160 1H NMR spectroscopy Methods 0.000 description 8
- 239000000654 additive Substances 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000007792 addition Methods 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 229920005591 polysilicon Polymers 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 150000004756 silanes Chemical class 0.000 description 4
- 238000001039 wet etching Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 229940125904 compound 1 Drugs 0.000 description 3
- 229940126214 compound 3 Drugs 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002430 hydrocarbons Chemical group 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 239000005380 borophosphosilicate glass Substances 0.000 description 2
- 239000005388 borosilicate glass Substances 0.000 description 2
- 229940125782 compound 2 Drugs 0.000 description 2
- 229940125898 compound 5 Drugs 0.000 description 2
- RCNRJBWHLARWRP-UHFFFAOYSA-N ethenyl-[ethenyl(dimethyl)silyl]oxy-dimethylsilane;platinum Chemical compound [Pt].C=C[Si](C)(C)O[Si](C)(C)C=C RCNRJBWHLARWRP-UHFFFAOYSA-N 0.000 description 2
- 238000001879 gelation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000005360 phosphosilicate glass Substances 0.000 description 2
- 229920001709 polysilazane Polymers 0.000 description 2
- 239000005368 silicate glass Substances 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- KWEKXPWNFQBJAY-UHFFFAOYSA-N (dimethyl-$l^{3}-silanyl)oxy-dimethylsilicon Chemical compound C[Si](C)O[Si](C)C KWEKXPWNFQBJAY-UHFFFAOYSA-N 0.000 description 1
- HSDGFGSXXVWDET-UHFFFAOYSA-N 1,3-bis(3-trimethoxysilylpropyl)urea Chemical compound CO[Si](OC)(OC)CCCNC(=O)NCCC[Si](OC)(OC)OC HSDGFGSXXVWDET-UHFFFAOYSA-N 0.000 description 1
- VEFLKXRACNJHOV-UHFFFAOYSA-N 1,3-dibromopropane Chemical compound BrCCCBr VEFLKXRACNJHOV-UHFFFAOYSA-N 0.000 description 1
- ZCENFMDNVIAVDP-UHFFFAOYSA-N 3-bis(prop-2-enyl)phosphorylprop-1-ene Chemical compound C=CCP(=O)(CC=C)CC=C ZCENFMDNVIAVDP-UHFFFAOYSA-N 0.000 description 1
- ATVJXMYDOSMEPO-UHFFFAOYSA-N 3-prop-2-enoxyprop-1-ene Chemical compound C=CCOCC=C ATVJXMYDOSMEPO-UHFFFAOYSA-N 0.000 description 1
- NZEDMAWEJPYWCD-UHFFFAOYSA-N 3-prop-2-enylsulfonylprop-1-ene Chemical compound C=CCS(=O)(=O)CC=C NZEDMAWEJPYWCD-UHFFFAOYSA-N 0.000 description 1
- QLOQGBKMUAAOLU-UHFFFAOYSA-N 3-tri(propan-2-yl)silylpropan-1-amine Chemical compound CC(C)[Si](C(C)C)(C(C)C)CCCN QLOQGBKMUAAOLU-UHFFFAOYSA-N 0.000 description 1
- JTXUAHIMULPXKY-UHFFFAOYSA-N 3-trihydroxysilylpropan-1-amine Chemical compound NCCC[Si](O)(O)O JTXUAHIMULPXKY-UHFFFAOYSA-N 0.000 description 1
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 1
- 239000005695 Ammonium acetate Substances 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910004205 SiNX Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229940043376 ammonium acetate Drugs 0.000 description 1
- 235000019257 ammonium acetate Nutrition 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000012935 ammoniumperoxodisulfate Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- IWBOPFCKHIJFMS-UHFFFAOYSA-N ethylene glycol bis(2-aminoethyl) ether Chemical compound NCCOCCOCCN IWBOPFCKHIJFMS-UHFFFAOYSA-N 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000548 poly(silane) polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000003352 sequestering agent Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 description 1
- JBYXACURRYATNJ-UHFFFAOYSA-N trimethoxy(1-trimethoxysilylhexyl)silane Chemical compound CCCCCC([Si](OC)(OC)OC)[Si](OC)(OC)OC JBYXACURRYATNJ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K13/00—Etching, surface-brightening or pickling compositions
- C09K13/04—Etching, surface-brightening or pickling compositions containing an inorganic acid
- C09K13/06—Etching, surface-brightening or pickling compositions containing an inorganic acid with organic material
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/0834—Compounds having one or more O-Si linkage
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/50—Organo-phosphines
- C07F9/5004—Acyclic saturated phosphines
- C07F9/5009—Acyclic saturated phosphines substituted by B, Si, P or a metal
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/50—Organo-phosphines
- C07F9/5022—Aromatic phosphines (P-C aromatic linkage)
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/50—Organo-phosphines
- C07F9/53—Organo-phosphine oxides; Organo-phosphine thioxides
- C07F9/5325—Aromatic phosphine oxides or thioxides (P-C aromatic linkage)
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6561—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom containing systems of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring or ring system, with or without other non-condensed hetero rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6596—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having atoms other than oxygen, sulfur, selenium, tellurium, nitrogen or phosphorus as ring hetero atoms
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
-
- 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
- H01L21/0405—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 semiconducting carbon, e.g. diamond, diamond-like carbon
- H01L21/042—Changing their shape, e.g. forming recesses
-
- 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
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30604—Chemical etching
-
- 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
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
-
- 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
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
-
- 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
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32133—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only
- H01L21/32134—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by liquid etching only
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Weting (AREA)
- ing And Chemical Polishing (AREA)
Abstract
Description
本申請案主張於2018年5月26日在韓國智慧財產局提出申請之韓國專利申請案第10-2018-0060000號之優先權,該申請案之揭示內容整體併於此以供參考。
本揭露係關於一種蝕刻劑組合物,更具體而言係關於一種具有高選擇比的蝕刻劑組合物,其可選擇性地去除氮化物膜而同時使氧化物膜的蝕刻率最小化。另外,本揭露係關於一種適合用作為蝕刻劑組合物之添加劑的矽烷化合物。
氧化物膜如氧化矽(SiO2)膜及氮化物膜如氮化矽(SiNx)膜係代表性的絕緣膜,且在半導體製造製程中,氧化矽膜或氮化矽膜係單獨使用或以積層板之形式使用,其中在該積層板中一或多個膜係交互地堆疊。另外,氧化物膜或氮化物膜亦用作為硬遮罩用於形成導電圖案,如金屬佈線。
在用於去除氮化物膜的濕式蝕刻製程中,通常係使用磷酸及去離子水的混合物。去離子水係添加以防止蝕刻率的降低以及防止對氧化 物膜之蝕刻選擇性的變化;然而,存在如下問題:即使所供應之去離子水的含量僅微小變化,在氮化物膜蝕刻去除製程中亦發生缺陷。另外,磷酸為強酸且為腐蝕性,因此處理上具有難度。
為了解決該問題,傳統上已知一種用於去除氮化物膜的技術,係使用一蝕刻劑組合物,其在磷酸(H3PO4)中包含氟酸(HF)、硝酸(HNO3)等,但此會造成抑制氮化物膜及氧化物膜之蝕刻選擇比的結果。另外,還已知一種技術,係使用包含磷酸及矽酸鹽或矽酸的蝕刻劑組合物;然而,矽酸或矽酸鹽具有如下問題:生成可能影響基板的粒子,因此相當不適合用於半導體製造製程中。
另一方面,當在用於去除氮化物膜的濕式蝕刻製程中使用磷酸時,由於氮化物膜及氧化物膜之間的蝕刻選擇比降低,不僅是氮化物膜,SOD氧化物膜亦會被蝕刻,因此難以調整有效場氧化物高度(effective field oxide height,EFH)。因此,可能無法確保用於去除氮化物膜之足夠的濕式蝕刻時間,或者需要額外的製程,此會造成改變且對元件特性具有不良的影響。
因此,目前需要一種具有高選擇比的蝕刻劑組合物,其相對於氧化物膜選擇性地蝕刻氮化物膜,且不具有例如在半導體製造製程中出現粒子的問題。
本揭露之一方案可提供一種具有高選擇比的蝕刻劑組合物,其可選擇性地去除氮化物膜而同時使氧化物膜的蝕刻率最小化,且不 具有例如出現對元件特性具有不良影響的粒子的問題;以及提供一種用於蝕刻劑組合物中的矽烷化合物。
根據本揭露之一方案,蝕刻劑組合物可包含磷酸以及如下化學式1所示之矽烷化合物
其中,A為n價基團,L為C1-C5伸烴基,R1至R3係獨立為氫、羥基、烴基、或烷氧基,其中R1至R3係各自存在或藉由雜元素而彼此連接,以及n為2至5之整數。
根據一例示性實施態樣,提供蝕刻劑組合物,其中R1至R3係獨立為C1-C20烷氧基,或者R1至R3為藉由氮而彼此連接的C1-C20烷氧基。
根據一例示性實施態樣,提供蝕刻劑組合物,其中A為C1-C20伸烴基、具有N作為鍵結位的基團、具有O作為鍵結位的基團、具有S作為鍵結位的基團、具有P作為鍵結位的基團、或胺鹽基團。
根據一例示性實施態樣,提供蝕刻劑組合物,其中C1-C20伸烴基為C1-C20伸烷基或C6-C20伸芳基。
於一例示性實施態樣中,提供蝕刻劑組合物,其中該具有N作為鍵結位的基團為*-NR14-*、*-NR15CSNR16-*、*-NR17CONR18-*、*-NR19L1NR20-*、*-NR21CONR22L2NR23CONR24-*、 *-NR25CONL3L4NCONR26-*、、或,其中R14 至R27係獨立為氫、C1-C20烷基、或C6-C20芳基,L1至L5為C1-C20伸烷基、C6-C20伸芳基、或R41(OR42)p,其中R41及R42係獨立為C1-C20伸烷基,且p為1至5之整數,L6為一直接鍵或(CH2)qNR43NR44,其中R43及R44係獨立為氫、C1-C20烷基、或C6-C20芳基、且q為1至5之整數。
於一例示性實施態樣中,提供蝕刻劑組合物,其中該具有O作為鍵結位的基團為*-O-*。
於一例示性實施態樣中,提供蝕刻劑組合物,其中該具有P 作為鍵結位的基團為、、、或,其中R28及R29 係獨立為氫、C1-C20烷基、C6-C20芳基、(C1-C20)烷氧基、或(C1-C20)烷基(C1-C20)烷氧基。
於一例示性實施態樣中,提供蝕刻劑組合物,其中該胺鹽基 團為*-N+(R11R12)X3 --*或,其中R11及R12係獨立為氫、C1-C20 烷基、或C6-C20芳基,以及X1至X3係各自獨立為鹵素或C1-C20烷基碳酸鹽基團(C1-C20 alkylcarbonate group)。
於一例示性實施態樣中,提供蝕刻劑組合物,其中n為2。
其中R為氫、C1-C20烷基、或C6-C20芳基。
於一例示性實施態樣中,提供蝕刻劑組合物,其中相對於該蝕刻劑組合物整體,該矽烷化合物之含量係0.001至1重量%。
其中R71至R74係獨立為氫、烴基、或雜烴基。
於一例示性實施態樣中,提供更包含銨鹽的蝕刻劑組合物。
其中,R1至R3係獨立為氫、羥基、烴基、或烷氧基,其中R1至R3係各自存在或藉由雜元素而彼此連接,L為C1-C5伸烴基,n為2至4 之整數,以及A為*-N+R11R12X3 --*、、*-NR19L1NR20-*、 *-NR21CONR22L2NR23CONR24-*、、、、或 ,其中R11、R12、R19至R24、及R27係獨立為氫、C1-C20烷基、或C6-C20 芳基,X1至X3係獨立為鹵素或C1-C20烷基碳酸鹽基團,L1及L5為C1-C20伸烷基或C6-C20伸芳基,L2為C1-C20伸烷基、C6-C20伸芳基、或R41(OR42)p,其中R41及R42係獨立為C1-C20伸烷基,且p為1至5之整數,以及L6為一直接鍵或(CH2)qNR43CONR44,其中R43及R44係獨立為氫、C1-C20烷基、或C6-C20芳基、且q為1至5之整數。
10‧‧‧基板
11‧‧‧穿隧氧化物膜
12‧‧‧多晶矽膜
13‧‧‧緩衝氧化物膜
14‧‧‧襯墊氮化物膜
15‧‧‧SOD氧化物膜
15A‧‧‧元件分離膜
上述及其他方案、特徵、及本揭露之其他優點將藉由以下詳細描述結合所附圖式而更能清楚理解,其中:第1圖及第2圖為製程截面圖,其顯示快閃記憶體元件(flash memory device)的元件分離製程。
以下,將參照所附圖式詳細描述本揭露之例示性實施態樣。
由於本揭露可經各種修改且具有多個例示性實施態樣,特定的例示性實施態樣將在實施態樣中示出並在實施方式所提供之詳細描述中詳細說明。然而,應理解本揭露並不限於特定例示性實施態樣,而是在不背離本揭露之範圍及精神下包括所有修改物、等同物、及替代物。
於本揭露使用的術語僅係用於描述特定實施態樣而非限制本揭露。除非另外於內文中指示,單數形式係旨在包括複數形式。將進一步理解本說明書中所用之術語「包含」或「具有」係指明存在有所述特徵、步驟、操作、成分、部分、或其組合,但不排除存在或額外有一或更多其他特徵、數目、步驟、操作、成分、部分、或其組合。
根據本揭露之一實施態樣的蝕刻劑組合物係包含磷酸及矽烷化合物。
磷酸可與氮化矽反應而蝕刻氮化物。氮化矽與磷酸可如下式所示反應而被蝕刻:3Si3N4+27H2O+4H3PO4 → 4(NH4)3PO4+9SiO2H2O (1)
磷酸可例如為含有80%濃度之磷酸的磷酸水溶液,但並不限於此。用於磷酸水溶液的水並無特別限制,但較佳為去離子水。
於化學式1中,R1至R3可獨立為氫、羥基、烴基、或烷氧基,其中R1至R3可各自存在或藉由雜元素而彼此連接,更具體而言,R1至R3可獨立為C1-C20烷氧基或藉由氮作為雜原子而彼此連接的C1-C20烷氧基。
L可為一直接鍵或C1-C3伸烴基,更具體而言可為C1-C3伸烷基。
另外,n可為2至4之整數。
A代表n價基團。例如,A可為伸烴基、具有N作為鍵結位的基團、具有O作為鍵結位的基團、具有S作為鍵結位的基團、具有P作為鍵結位的基團、或胺鹽基團等。
伸烴基可為C1-C20伸烷基或C6-C20伸芳基,更具體而言,例如(CH2)2、(CH2)6、伸苯基等。在此情況下,n為整數2。
當A為具有N作為鍵結位的基團時,A可為例如*-NR14-*,如*-NH-*;*-NR15CSNR16-*,如*-NHCSNH-*;*-NR17CONR18-*,如*-NHCONH-*;*-NR19L1NR20-*,如*-NH(CH2)3NH-*或*-NCH3(CH2)3NCH3-*;*-NR21CONR22L2NR23CONR24-*,如*-NHCONH(CH2)2NHCONH-*、*-NHCONH(C6H4)NHCONH-*、或*-NHCONH(CH2)2O(CH2)2O(CH2)2NHCONH-*;*-NR25CONL3L4NCONR26-*,如*-NHCON(CH2)2(CH2)2NCONH-*等, 此係n為整數2的情況下。另外,A可為,此係n為整數3的情況 下。另外,A可為,此係n為整數4的情況下。
此處,R14至R27係獨立為氫、C1-C20烷基、或C6-C20芳基,L1至L5為C1-C20伸烷基、C6-C20伸芳基、或R41(OR42)p,其中R41及R42係獨立為C1-C20伸烷基,且p為1至5之整數,L6為一直接鍵或(CH2)qNR43NR44,其中R43及R44係獨立為氫、C1-C20烷基、或C6-C20芳基、且q為1至5之整數。
具有O作為鍵結位的基團可為例如*-O-*,且在此情況下,n為整數2。
另一方面,具有P作為鍵結位的基團可為例如、 、、或,且在此情況下,n為2或3之整數,其中R28 及R29可獨立為氫、C1-C20烷基、C6-C20芳基、(C1-C20)烷氧基、或(C1-C20)烷基(C1-C20)烷氧基。
另外,A可為胺鹽基團,具體而言可為*-N+(R11R12)X3 --*或 ,且n為整數2,其中R11及R12可獨立為氫、C1-C20烷基、或 C6-C20芳基,以及X1至X3可獨立為鹵素或C1-C20烷基碳酸鹽基團。
上述之矽烷化合物具有二或更多矽烷,藉此與氧化物膜反應而在該氧化物膜之表面上形成保護膜,此會抑制磷酸蝕刻氧化物膜。因此,當藉由磷酸蝕刻去除氮化物膜時,矽烷化合物可適當地用作為蝕刻劑添加劑以改善氮化物膜對氧化物膜的選擇性。
矽烷化合物中所含的氧係鍵結至氧化物膜的表面以保護該氧化物膜,且可經氫鍵結至氧化物膜的表面,從而在蝕刻劑組合物中蝕刻 氮化物期間使氧化物膜之蝕刻最小化。特定而言,本揭露所提供的矽烷化合物具有二或更多矽烷基團,因此對氧化物膜的表面具有高鍵結性質而進一步增加氮化物膜對氧化物膜的蝕刻選擇性。因此,包含本揭露之矽烷化合物的蝕刻劑可改善對氮化物膜的選擇性,同時使氧化物膜的蝕刻率最小化。
另一方面,在上述式(1)中,SiO2H2O可於氧化物膜的表面析出而增加氧化物膜的厚度。此現象稱為異常生長(abnormal growth)。特定而言,當該現象透過在蝕刻劑組合物中氮化物的蝕刻製程累積而進行時,蝕刻劑組合物中的SiO2H2O濃度會增加,而SiO2H2O濃度的增加會導致異常生長的發生率增加。此即,即使在初始蝕刻劑組合物中未發生SiO2H2O之異常生長的情況下,異常生長的發生率仍會隨所累積之製程數目的增加而增加。然而,當包含有根據本揭露之矽烷化合物時,可抑制此類異常生長的發生。
基於蝕刻劑組合物之總重量,本揭露之矽烷化合物可以0.001至1重量%之用量添加。由於本揭露所用之矽烷化合物係如上所述具有二或更多矽烷基團,本揭露所建議之矽烷化合物即使是以少量添加至蝕刻劑組合物情況下,亦可有效地保護氧化矽膜,從而增加氮化物對氧化物膜的蝕刻選擇性。具體而言,當矽烷化合物的使用量小於0.001重量%時,難以獲得氮化物膜對氧化物膜之高選擇性的效果;而當使用量大於1重量%時,矽烷化合物會凝膠化(gelled),此為不佳的。例如,矽烷化合物可使用0.001至0.7重量%、0.002至0.7重量%、0.002至0.5重量%、0.005至0.5重量%等。
其中R71至R74係獨立為氫、烴基、或雜烴基。
基於蝕刻劑組合物之總重量,化學式2所示之矽烷化合物之用量可為0.005至1重量%。
另外,可添加銨鹽。銨鹽可防止蝕刻劑組合物膠化,且基於總重量,可以0.001至10重量%之用量添加。當銨鹽以小於0.001重量%添加時,降低膠化之物理性質改善效果不明顯;而當以大於10重量%添加時,銨鹽可為造成膠化之原因。
銨鹽為具有銨離子的化合物,且本揭露所屬技術領域中通常使用的銨鹽亦可適當地用於本揭露中。銨鹽可為例如氨水、氯化銨、乙酸銨、磷酸銨、過氧二硫酸銨、硫酸銨、氟酸銨等,但並不限於此,且該等銨鹽可單獨使用或組合二或更多者使用。
另外,本揭露之蝕刻劑組合物可更包含本領域中通常使用的視需要的添加劑,以進一步改善蝕刻效能。添加劑可包含表面活性劑、金屬離子螯合劑(metal ion sequestrant)、腐蝕抑制劑等。
本揭露之蝕刻劑組合物係用於藉由蝕刻從包含氧化物膜及氮化物膜的半導體元件選擇性地去除氮化物膜,且該氮化物膜可包含氮化矽膜,例如SiN膜、SiON膜等。
另外,氧化物膜可為選自氧化矽膜所組成之群組的至少一者,例如旋塗式介電(spin on dielectric,SOD)膜、高密度電漿(HDP)膜、熱氧化物膜、硼磷矽酸鹽玻璃(BPSG)膜、磷矽酸鹽玻璃(PSG)膜、硼矽酸鹽玻璃(BSG)膜、聚矽氮烷(PSZ)膜、氟化矽酸鹽玻璃(FSG)膜、低壓四乙基正矽酸鹽(low pressure tetraethyl orthosilicate,LPTEOS)膜、電漿增強四乙基正矽酸鹽(PETEOS)膜、高溫氧化物(HTO)膜、中溫氧化物(MTO)膜、未摻雜之矽酸鹽玻璃(USG)膜、旋塗式玻璃(SOG)膜、先進平面化層(advanced planarization layer,APL)膜、原子層沉積(ALD)膜、電漿增強氧化物(Pe-oxide)膜、O3-四乙基正矽酸鹽(O3-TEOS)膜、或其組合。
使用本揭露之蝕刻劑組合物的蝕刻方法可藉由本領域熟知的濕式蝕刻方法進行,例如浸漬法、噴霧法等。
使用本揭露之蝕刻劑組合物的蝕刻方法的實例係圖示於第1圖及第2圖。第1圖及第2圖為製程截面圖,其顯示快閃記憶體元件的元件分離製程作為實例。
首先,如第1圖所示,將穿隧氧化物膜11、多晶矽膜12、緩衝氧化物膜13、及襯墊氮化物膜14依序形成於基板10上,然後將該多晶矽膜12、該緩衝氧化物膜13、及該襯墊氮化物膜14選擇性地蝕刻以形成溝槽。然後,形成SOD氧化物膜15直至該溝槽之空隙被填補,然後於該SOD氧化物膜15上進行CMP製程,使用該襯墊氮化物膜14作為拋光終止膜。
接著,如第2圖所示,使用上述根據本揭露之蝕刻劑組合物藉由濕式蝕刻去除該襯墊氮化物膜14,然後藉由洗滌製程去除該緩衝氧化物膜13。如此,在場區域(field area)中形成元件分離膜15A。
在蝕刻製程期間,製程溫度可為50至300℃之範圍,較佳100至200℃,更佳156至163℃,且可視其他製程及其他因素之需求而改變適合的溫度。
如此,根據包含使用本揭露之蝕刻劑組合物所進行之蝕刻製程的半導體元件製造方法,當氮化物膜及氧化物膜係交互堆疊或混合時,能夠選擇性地蝕刻氮化物膜。另外,可防止在傳統蝕刻製程中會造成問題之粒子的出現,因而確保穩定性及可靠性。
因此,該方法可有效地應用於半導體元件製造製程中要求相對於氧化物膜選擇性地蝕刻氮化物膜的各種製程中。
實施例
以下,本揭露將藉由實施例詳細描述。以下實施例係關於本揭露之實例,但本揭露並不限於此。
合成例1
矽烷化合物1
將攪拌子置於250毫升圓底燒瓶中,向其中裝備回流冷凝器,然後加入9.8公克烯丙基醚、100毫升甲苯、及0.5毫升鉑(0)-1,3-二乙烯基-1,1,3,3-四甲基二矽氧烷錯合物溶液(Pt含量約2%)。
加入37公克三甲氧基矽烷,然後將溫度升至50℃。
攪拌24小時後,使用旋轉濃縮機濃縮該反應物。
1H-NMR(CDCl3)3.55(s,18H),2.52(t,J=7.0Hz,4H),1.42(qui,J=9.0Hz,4H),0.58(t,J=7.0Hz,4H)
合成例2
矽烷化合物2
將攪拌子置於250毫升圓底燒瓶中,然後加入34公克雙[(3-三甲氧基矽基)丙基]胺及100毫升二氯甲烷。
使用冰浴冷卻該反應物,然後於1小時期間緩慢添加0.6公克乙酸。
1H-NMR(CDCl3)3.60(s,18H),3.33(t,J=7.0Hz,4H),2.20(s,3H),2.1(qui,J=9.0Hz,4H),0.60~0.55(m,4H)
合成例3
矽烷化合物3
將攪拌子置於250毫升圓底燒瓶中,向其中裝備回流冷凝器,然後加入20公克1,3-二溴丙烷及100毫升甲苯。
加入52公克3-胺基丙基三異丙基矽烷,將溫度升至110℃,然後攪拌該反應物24小時。
1H-NMR(CDCl3)3.57(qui,J=6.8Hz,6H),2.62~2.50(m,8H),2.0(br,2H),1.58(qui,J=7.0Hz,2H),1.50(qui,J=9.0Hz,4H),1.24(d,J=6.8Hz,36H),0.60~0.55(m,4H)
合成例4
矽烷化合物4
將攪拌子置於250毫升圓底燒瓶中,向其中裝備迪安-斯塔克裝置(Dean-Stark trap),然後加入32公克雙(三甲氧基矽基)己烷及30公克三乙醇胺。
加入100毫升甲苯,將溫度升至90℃以去除甲醇,然後攪拌該反應物24小時。
1H-NMR(CDCl3)3.73(t,J=5.5Hz,12H),2.73(t,J=5.5Hz,12H),1.35~1.25(m,8H),0.42(m,4H)
合成例5
矽烷化合物5
將攪拌子置於250毫升圓底燒瓶中,向其中裝備迪安-斯塔克裝置,然後加入38公克N,N’-雙[(三甲氧基矽基)丙基]尿素及30公克三乙醇胺。
加入100毫升甲苯,將溫度升至90℃以去除甲醇,然後攪拌該反應物24小時。
1H-NMR(CDCl3)6.0(br,2H),3.73(t,J=5.5Hz,12H),3.38(t,J=7.0Hz,4H),2.73(t,J=5.5Hz,12H)1.55~1.35(m,4H),0.45(m,4H)
合成例6
矽烷化合物6
將攪拌子置於250毫升圓底燒瓶中,然後加入15公克2,2’-(伸乙二氧基)雙(乙基胺)及100毫升二氯甲烷。
使用冰浴冷卻該反應物,然後於1小時期間緩慢添加44公克3-(三乙氧基矽基)丙基異氰酸酯。
1H-NMR(CDCl3)5.8(br,2H),5.0(br,2H),3.85~3.70(m,16H),3.54(s,4H),3.38(t,J=7.0Hz,4H),3.24(t,J=7.0Hz,4H),1.65~1.58(m,4H),1.21(t,J=7.0Hz,18H),0.60~0.52(m,4H)
合成例7
矽烷化合物7
將攪拌子置於250毫升圓底燒瓶中,向其中裝備回流冷凝器,然後加入14公克二烯丙基碸、100毫升甲苯、及0.5毫升鉑(0)-1,3-二乙烯基-1,1,3,3-四甲基二矽氧烷錯合物溶液(Pt含量約2%)。
加入37公克三甲氧基矽烷,然後將溫度升至50℃。
攪拌24小時後,使用旋轉濃縮機濃縮該反應物。
1H-NMR(CDCl3)3.60(s,18H),3.41(t,J=7.0Hz,4H),1.97~1.89(m,4H),0.62~0.58(m,4H)
合成例8
矽烷化合物8
將攪拌子置於250毫升圓底燒瓶中,向其中裝備回流冷凝器,然後加入17公克三烯丙基膦氧化物、100毫升甲苯、及0.5毫升鉑(0)-1,3-二乙烯基-1,1,3,3-四甲基二矽氧烷錯合物溶液(Pt含量約2%)。
加入50公克三甲氧基矽烷,然後將溫度升至50℃。
攪拌24小時後,使用旋轉濃縮機濃縮該反應物。
1H-NMR(CDCl3)3.57(s,27H),1.77~1.65(m,6H),1.47~1.40(m,6H),.0.58(t,J=7.1Hz,6H)
實施例1至8及比較例1
將合成例1至8所獲得之各矽烷化合物1至8加至85%磷酸並與其混合使得含量為100重量%,如表1所示,從而製備蝕刻劑溶液(實施例1至8)。
作為比較例,將0.5重量%的3-胺基丙基矽烷三醇(比較矽烷化合物1)加至99.5重量%的85%磷酸並與其混合,從而製備蝕刻劑溶液(比較例1),如表1所示。
在半導體晶圓上形成以500Å之厚度沉積的氮化矽(SiN)膜及以5000Å之厚度沉積的氧化矽(SiOx)膜,從而製得一基板。
將包含各矽烷化合物的實施例1至8及比較例1之蝕刻劑溶液添加至圓底燒瓶,且當溫度達到156℃或163℃時,蝕刻該氮化矽膜及該氧化矽膜。
蝕刻速率為如下計算的值:在蝕刻該氮化矽膜720秒及該氧化矽膜6000秒之後,將處理各個膜之前的膜厚度與藉由蝕刻處理各個膜之後的膜厚度之差值除以蝕刻時間(分鐘),且膜厚度係使用橢圓偏光儀(NANO VIEW,SEMG-1000)量測。
選擇比係代表氮化物膜之蝕刻速率對氧化物膜之蝕刻速率的比。
實施例9
將合成例3所獲得之矽烷化合物3添加至85%磷酸並與其混合使得含量為100重量%,如表1所示,從而製備蝕刻劑溶液(實施例9)。
使用實施例9之蝕刻劑溶液,以與實施例1相同的方式在與實施例1相同的基板上蝕刻氮化矽膜及氧化矽膜。
以與實施例1相同的方式量測選擇比,並將結果示於表1。
如上表1所示,在實施例1至9中,係使用具有二或更多矽烷基團的多矽烷化合物作為蝕刻劑溶液的添加劑,因此氧化矽膜幾乎不被蝕 刻且氮化矽膜係經選擇性蝕刻,因而達成高選擇比。然而,比較例1的單矽烷化合物添加劑對氧化矽膜具有高的蝕刻速率,因此具有較低的選擇比。
根據本揭露的蝕刻劑組合物具有氮化物膜對氧化物膜的高蝕刻選擇比,其係藉由包含矽烷化合物,該矽烷化合物與氧化物膜之表面反應而形成能夠保護該氧化物膜的保護膜。
另外,使用本揭露之蝕刻劑組合物可防止當去除氮化物膜時對氧化物膜的膜品質造成破壞,或者防止由於蝕刻氧化物膜所造成的電性質劣化,從而改善元件特性。
特定而言,本揭露係使用包含二或更多矽烷的矽烷化合物,從而即使以少量添加亦能獲得優異的選擇比。
即使已於上文顯示及描述例示性實施態樣,本領域技藝人士將清楚了解在不背離所附申請專利範圍所界定的本發明的範圍下可進行修改及變化。
10‧‧‧基板
11‧‧‧穿隧氧化物膜
12‧‧‧多晶矽膜
13‧‧‧緩衝氧化物膜
14‧‧‧襯墊氮化物膜
15‧‧‧SOD氧化物膜
Claims (16)
- 如請求項1所述之蝕刻劑組合物,其中R1至R3係獨立為C1-C20烷氧基,或者R1至R3為藉由氮而彼此連接的C1-C20烷氧基。
- 如請求項1所述之蝕刻劑組合物,其中A為C1-C20伸烴基、具有N作為鍵結位的基團、具有O作為鍵結位的基團、具有S作為鍵結位的基團、具有P作為鍵結位的基團、或胺鹽基團。
- 如請求項3所述之蝕刻劑組合物,其中該C1-C20伸烴基為C1-C20伸烷基或C6-C20伸芳基。
- 如請求項3所述之蝕刻劑組合物,其中該具有N作為鍵結位的基團為*-NR14-*、*-NR15CSNR16-*、*-NR17CONR18-*、*-NR19L1NR20-*、*-NR21CONR22L2NR23CONR24-*、*-NR25CONL3L4NCONR26-*、、或,其中R14至R27係獨立為氫、C1-C20烷基、或C6-C20芳基,L1至L5為C1-C20伸烷基、C6-C20伸芳基、或R41(OR42)p,其中R41及R42係獨立為C1-C20伸烷基,且p為1至5之整數,以及L6為一直接鍵或(CH2)qNR43NR44,其中R43及R44係獨立為氫、C1-C20烷基、或C6-C20芳基、且q為1至5之整數。
- 如請求項3所述之蝕刻劑組合物,其中該具有O作為鍵結位的基團為*-O-*。
- 如請求項1所述之蝕刻劑組合物,其中n為2。
- 如請求項1所述之蝕刻劑組合物,其中相對於該蝕刻劑組合物整體,該矽烷化合物之含量係0.001至1重量%。
- 如請求項13所述之蝕刻劑組合物,更包含銨鹽。
- 一種矽烷化合物,係如下化學式1所示:
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2018-0060000 | 2018-05-26 | ||
KR1020180060000A KR102005963B1 (ko) | 2018-05-26 | 2018-05-26 | 식각액 조성물 및 실란화합물 |
Publications (2)
Publication Number | Publication Date |
---|---|
TW202003801A TW202003801A (zh) | 2020-01-16 |
TWI784168B true TWI784168B (zh) | 2022-11-21 |
Family
ID=67473830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW108118094A TWI784168B (zh) | 2018-05-26 | 2019-05-24 | 蝕刻劑組合物及矽烷化合物 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10781371B2 (zh) |
JP (2) | JP7365139B2 (zh) |
KR (1) | KR102005963B1 (zh) |
CN (1) | CN110527512B (zh) |
TW (1) | TWI784168B (zh) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102557642B1 (ko) * | 2018-10-25 | 2023-07-20 | 에스케이이노베이션 주식회사 | 식각 조성물 첨가제, 그 제조방법 및 이를 포함하는 식각 조성물 |
KR102633743B1 (ko) | 2018-10-26 | 2024-02-05 | 에스케이이노베이션 주식회사 | 식각액 조성물, 절연막의 식각방법 및 반도체 소자의 제조방법 |
KR20200122521A (ko) * | 2019-04-18 | 2020-10-28 | 에스케이이노베이션 주식회사 | 신규한 규소 화합물 |
KR20200137410A (ko) * | 2019-05-30 | 2020-12-09 | 에스케이이노베이션 주식회사 | 식각 조성물, 이를 이용한 절연막 식각 방법 및 반도체 소자의 제조방법, 그리고 신규 화합물 |
KR102525287B1 (ko) * | 2019-10-18 | 2023-04-24 | 삼성에스디아이 주식회사 | 구리 막 연마용 cmp 슬러리 조성물 및 이를 이용한 구리 막 연마 방법 |
KR102345842B1 (ko) * | 2020-09-21 | 2021-12-31 | 주식회사 이엔에프테크놀로지 | 실리콘 질화막 식각 조성물 및 이를 이용한 방법 |
US20230395852A1 (en) * | 2020-10-30 | 2023-12-07 | Panasonic Intellectual Property Management Co., Ltd. | Alkoxysilyl compound and nonaqueous electrolytic solution additive containing same, and nonaqueous electrolytic solution and nonaqueous electrolytic solution secondary battery containing said additive |
CN115746044A (zh) * | 2022-09-27 | 2023-03-07 | 大连理工大学 | 一类含有链中柔性链段和脲键的硅烷偶联剂及其制备方法及其制备方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57202719A (en) * | 1981-06-05 | 1982-12-11 | Matsushita Electric Ind Co Ltd | Condenser |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62283982A (ja) * | 1986-05-29 | 1987-12-09 | Sunstar Giken Kk | ビス〔(アルコキシシリル)アルキル〕ジスルフイドの製法 |
DE102006004062A1 (de) | 2006-01-28 | 2007-08-09 | Degussa Gmbh | Kautschukmischungen |
TWI509690B (zh) | 2006-12-21 | 2015-11-21 | Entegris Inc | 選擇性移除氮化矽之組合物及方法 |
KR101232442B1 (ko) | 2007-09-21 | 2013-02-12 | 캐보트 마이크로일렉트로닉스 코포레이션 | 아미노실란으로 처리된 연마제 입자를 이용한 연마 조성물 및 방법 |
KR101243331B1 (ko) | 2010-12-17 | 2013-03-13 | 솔브레인 주식회사 | 화학 기계적 연마 슬러리 조성물 및 이를 이용하는 반도체 소자의 제조 방법 |
KR101782329B1 (ko) * | 2011-10-18 | 2017-09-28 | 삼성전자주식회사 | 식각용 조성물 및 이를 이용하는 반도체 기억 소자의 형성 방법 |
US9368647B2 (en) * | 2011-10-18 | 2016-06-14 | Samsung Electronics Co., Ltd. | Compositions for etching |
KR101320416B1 (ko) * | 2011-12-29 | 2013-10-22 | 솔브레인 주식회사 | 식각액 조성물 및 이를 이용한 습식 식각방법 |
US8778212B2 (en) | 2012-05-22 | 2014-07-15 | Cabot Microelectronics Corporation | CMP composition containing zirconia particles and method of use |
JP2014099480A (ja) | 2012-11-13 | 2014-05-29 | Fujifilm Corp | 半導体基板のエッチング方法及び半導体素子の製造方法 |
EP3161098B1 (en) * | 2014-06-25 | 2022-10-26 | CMC Materials, Inc. | Tungsten chemical-mechanical polishing composition |
JP6580397B2 (ja) | 2014-07-17 | 2019-09-25 | ソウルブレイン シーオー., エルティーディー. | エッチング用組成物及びこれを用いた半導体素子の製造方法 |
KR20160010267A (ko) * | 2014-07-17 | 2016-01-27 | 솔브레인 주식회사 | 식각용 조성물 및 이를 이용한 반도체 소자의 제조방법 |
KR102545802B1 (ko) * | 2015-12-04 | 2023-06-21 | 솔브레인 주식회사 | 식각용 조성물 및 이를 이용한 반도체 소자의 제조방법 |
WO2017095022A1 (ko) | 2015-12-04 | 2017-06-08 | 솔브레인 주식회사 | 식각용 조성물 및 이를 이용한 반도체 소자의 제조방법 |
CN107345137A (zh) * | 2016-05-04 | 2017-11-14 | Oci有限公司 | 能够抑制颗粒出现的蚀刻溶液 |
CN109689838A (zh) | 2016-12-26 | 2019-04-26 | 秀博瑞殷株式公社 | 蚀刻用组合物和使用该蚀刻用组合物制造半导体器件的方法 |
KR102534841B1 (ko) * | 2016-12-26 | 2023-05-19 | 솔브레인 주식회사 | 식각용 조성물 및 이를 이용한 반도체 소자의 제조방법 |
KR101828437B1 (ko) | 2017-04-06 | 2018-03-29 | 주식회사 디엔에스 | 실리콘 질화막 식각용 조성물. |
KR102629574B1 (ko) * | 2017-11-24 | 2024-01-26 | 동우 화인켐 주식회사 | 절연막 식각액 조성물 및 이를 이용한 패턴 형성 방법 |
KR102602860B1 (ko) * | 2017-11-24 | 2023-11-16 | 동우 화인켐 주식회사 | 절연막 식각액 조성물 및 이를 이용한 패턴 형성 방법 |
KR102653096B1 (ko) * | 2018-02-13 | 2024-04-01 | 동우 화인켐 주식회사 | 절연막 식각액 조성물 및 이를 이용한 패턴 형성 방법 |
-
2018
- 2018-05-26 KR KR1020180060000A patent/KR102005963B1/ko active IP Right Grant
-
2019
- 2019-05-23 CN CN201910433994.9A patent/CN110527512B/zh active Active
- 2019-05-23 JP JP2019097131A patent/JP7365139B2/ja active Active
- 2019-05-24 US US16/421,903 patent/US10781371B2/en active Active
- 2019-05-24 TW TW108118094A patent/TWI784168B/zh active
-
2023
- 2023-08-01 JP JP2023125324A patent/JP2023162183A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57202719A (en) * | 1981-06-05 | 1982-12-11 | Matsushita Electric Ind Co Ltd | Condenser |
Non-Patent Citations (1)
Title |
---|
期刊 Sambasivarao Kotha A Short Synthetic Route to Benzosultine-sulfone using Rongalite and [2+2+2]-Cyclotrimerization ChemistrySelect 2017 10804-10808 * |
Also Published As
Publication number | Publication date |
---|---|
KR102005963B1 (ko) | 2019-07-31 |
CN110527512B (zh) | 2022-09-13 |
CN110527512A (zh) | 2019-12-03 |
JP2019204953A (ja) | 2019-11-28 |
US20190359886A1 (en) | 2019-11-28 |
JP2023162183A (ja) | 2023-11-08 |
TW202003801A (zh) | 2020-01-16 |
JP7365139B2 (ja) | 2023-10-19 |
US10781371B2 (en) | 2020-09-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI784168B (zh) | 蝕刻劑組合物及矽烷化合物 | |
TWI794500B (zh) | 蝕刻劑組合物、蝕刻絕緣膜的方法、製造半導體裝置的方法、及矽烷化合物 | |
TWI813803B (zh) | 矽烷化合物及其應用 | |
CN111100640B (zh) | 用于蚀刻组合物的添加剂、其制备方法和包含其的蚀刻组合物 | |
CN112011341B (zh) | 刻蚀用组合物、刻蚀绝缘体的方法和制造半导体器件的方法以及新型化合物 | |
KR102576575B1 (ko) | 식각 조성물, 이를 이용한 절연막의 식각방법 및 반도체 소자의 제조방법 | |
KR20200057288A (ko) | 식각액 조성물, 절연막의 식각방법 및 반도체 소자의 제조방법 | |
KR102576576B1 (ko) | 식각 조성물, 이를 이용한 절연막의 식각방법 및 반도체 소자의 제조방법 | |
TWI837418B (zh) | 蝕刻組合物、使用彼蝕刻半導體元件之絕緣膜的方法、以及製備半導體元件的方法 | |
KR102576574B1 (ko) | 식각 조성물, 이를 이용한 절연막의 식각방법 및 반도체 소자의 제조방법 | |
TW202108747A (zh) | 蝕刻組合物、使用彼蝕刻半導體元件之絕緣膜的方法及製備半導體元件的方法 |