TW201708613A - 濕式蝕刻方法及蝕刻液 - Google Patents
濕式蝕刻方法及蝕刻液 Download PDFInfo
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- TW201708613A TW201708613A TW105121268A TW105121268A TW201708613A TW 201708613 A TW201708613 A TW 201708613A TW 105121268 A TW105121268 A TW 105121268A TW 105121268 A TW105121268 A TW 105121268A TW 201708613 A TW201708613 A TW 201708613A
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- TW
- Taiwan
- Prior art keywords
- group
- diketone
- metal
- wet etching
- etching solution
- Prior art date
Links
- 238000005530 etching Methods 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000001039 wet etching Methods 0.000 title claims abstract description 34
- 229910052751 metal Inorganic materials 0.000 claims abstract description 75
- 239000002184 metal Substances 0.000 claims abstract description 73
- 239000003960 organic solvent Substances 0.000 claims abstract description 22
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims abstract description 12
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 21
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 20
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 16
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 16
- 239000000654 additive Substances 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 230000000996 additive effect Effects 0.000 claims description 12
- 229910052747 lanthanoid Inorganic materials 0.000 claims description 12
- 150000002602 lanthanoids Chemical class 0.000 claims description 12
- 239000004065 semiconductor Substances 0.000 claims description 12
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052707 ruthenium Inorganic materials 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- GRHYFDZMGZYXAP-UHFFFAOYSA-N 1,1,1,3,5,5,5-heptafluoropentane-2,4-dione Chemical compound FC(F)(F)C(=O)C(F)C(=O)C(F)(F)F GRHYFDZMGZYXAP-UHFFFAOYSA-N 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 229910052733 gallium Inorganic materials 0.000 claims description 4
- 229910052735 hafnium Inorganic materials 0.000 claims description 4
- 229910052738 indium Inorganic materials 0.000 claims description 4
- 229910052745 lead Inorganic materials 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 150000002978 peroxides Chemical class 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 229910052718 tin Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052726 zirconium Inorganic materials 0.000 claims description 4
- RPXLNSNMPLHDLQ-UHFFFAOYSA-N 1,1,1,5,5,5-hexafluoro-3-methylpentane-2,4-dione Chemical compound FC(F)(F)C(=O)C(C)C(=O)C(F)(F)F RPXLNSNMPLHDLQ-UHFFFAOYSA-N 0.000 claims description 3
- VVXLFFIFNVKFBD-UHFFFAOYSA-N 4,4,4-trifluoro-1-phenylbutane-1,3-dione Chemical compound FC(F)(F)C(=O)CC(=O)C1=CC=CC=C1 VVXLFFIFNVKFBD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052785 arsenic Inorganic materials 0.000 claims description 3
- DQUIAMCJEJUUJC-UHFFFAOYSA-N dibismuth;dioxido(oxo)silane Chemical compound [Bi+3].[Bi+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O DQUIAMCJEJUUJC-UHFFFAOYSA-N 0.000 claims description 3
- VBZWSGALLODQNC-UHFFFAOYSA-N hexafluoroacetone Chemical compound FC(F)(F)C(=O)C(F)(F)F VBZWSGALLODQNC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052741 iridium Inorganic materials 0.000 claims description 3
- 150000002576 ketones Chemical class 0.000 claims description 3
- 229910052762 osmium Inorganic materials 0.000 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 229910052703 rhodium Inorganic materials 0.000 claims description 3
- 239000005368 silicate glass Substances 0.000 claims description 3
- TXBBUSUXYMIVOS-UHFFFAOYSA-N thenoyltrifluoroacetone Chemical compound FC(F)(F)C(=O)CC(=O)C1=CC=CS1 TXBBUSUXYMIVOS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- VZXTWGWHSMCWGA-UHFFFAOYSA-N 1,3,5-triazine-2,4-diamine Chemical compound NC1=NC=NC(N)=N1 VZXTWGWHSMCWGA-UHFFFAOYSA-N 0.000 claims description 2
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 2
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 claims description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 2
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 2
- 150000002009 diols Chemical class 0.000 claims description 2
- JZBWUTVDIDNCMW-UHFFFAOYSA-L dipotassium;oxido sulfate Chemical compound [K+].[K+].[O-]OS([O-])(=O)=O JZBWUTVDIDNCMW-UHFFFAOYSA-L 0.000 claims description 2
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 claims description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 2
- 150000003138 primary alcohols Chemical class 0.000 claims description 2
- 229910052702 rhenium Inorganic materials 0.000 claims description 2
- 150000003333 secondary alcohols Chemical class 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 229940045872 sodium percarbonate Drugs 0.000 claims description 2
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- 150000003509 tertiary alcohols Chemical class 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- FHUDAMLDXFJHJE-UHFFFAOYSA-N 1,1,1-trifluoropropan-2-one Chemical compound CC(=O)C(F)(F)F FHUDAMLDXFJHJE-UHFFFAOYSA-N 0.000 claims 2
- BVPKYBMUQDZTJH-UHFFFAOYSA-N 1,1,1-trifluoro-5,5-dimethylhexane-2,4-dione Chemical compound CC(C)(C)C(=O)CC(=O)C(F)(F)F BVPKYBMUQDZTJH-UHFFFAOYSA-N 0.000 claims 1
- 125000005594 diketone group Chemical group 0.000 claims 1
- VLKZOEOYAKHREP-UHFFFAOYSA-N hexane Substances CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 13
- 238000001312 dry etching Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 4
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 4
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052732 germanium Inorganic materials 0.000 description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 3
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- MXHJYCDSUGIACP-UHFFFAOYSA-N propan-2-one;1,1,1-trifluoropropan-2-one Chemical compound CC(C)=O.CC(=O)C(F)(F)F MXHJYCDSUGIACP-UHFFFAOYSA-N 0.000 description 3
- QUCXTQXIUAQSRT-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropan-2-one;propan-2-one Chemical compound CC(C)=O.FC(F)(F)C(=O)C(F)(F)F QUCXTQXIUAQSRT-UHFFFAOYSA-N 0.000 description 2
- WWSJZGAPAVMETJ-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-3-ethoxypyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C(=NN(C=1)CC(=O)N1CC2=C(CC1)NN=N2)OCC WWSJZGAPAVMETJ-UHFFFAOYSA-N 0.000 description 2
- 229910003321 CoFe Inorganic materials 0.000 description 2
- 229910019001 CoSi Inorganic materials 0.000 description 2
- 229910002601 GaN Inorganic materials 0.000 description 2
- 229910005883 NiSi Inorganic materials 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- -1 amine compound Chemical class 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical group 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 2
- SJLDJXFXIRENRV-UHFFFAOYSA-N 1,1,1,6,6,6-hexafluorohexane-2,4-dione Chemical compound FC(F)(F)CC(=O)CC(=O)C(F)(F)F SJLDJXFXIRENRV-UHFFFAOYSA-N 0.000 description 1
- SHXHPUAKLCCLDV-UHFFFAOYSA-N 1,1,1-trifluoropentane-2,4-dione Chemical compound CC(=O)CC(=O)C(F)(F)F SHXHPUAKLCCLDV-UHFFFAOYSA-N 0.000 description 1
- MIZLGWKEZAPEFJ-UHFFFAOYSA-N 1,1,2-trifluoroethene Chemical group FC=C(F)F MIZLGWKEZAPEFJ-UHFFFAOYSA-N 0.000 description 1
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 229910002704 AlGaN Inorganic materials 0.000 description 1
- 229910019236 CoFeB Inorganic materials 0.000 description 1
- 229910018979 CoPt Inorganic materials 0.000 description 1
- 229910002535 CuZn Inorganic materials 0.000 description 1
- NPHGWWBSZIPKGI-UHFFFAOYSA-N FC(C(CC(C(F)(F)F)=O)=O)(F)F.CC(=O)C.FC(C(=O)C(F)(F)F)(F)F Chemical compound FC(C(CC(C(F)(F)F)=O)=O)(F)F.CC(=O)C.FC(C(=O)C(F)(F)F)(F)F NPHGWWBSZIPKGI-UHFFFAOYSA-N 0.000 description 1
- 229910002555 FeNi Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 description 1
- 229910000673 Indium arsenide Inorganic materials 0.000 description 1
- 229910003266 NiCo Inorganic materials 0.000 description 1
- 229910003962 NiZn Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- GPEHQHXBPDGGDP-UHFFFAOYSA-N acetonitrile;propan-2-one Chemical compound CC#N.CC(C)=O GPEHQHXBPDGGDP-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 150000007514 bases Chemical class 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 229910001195 gallium oxide Inorganic materials 0.000 description 1
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—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
-
- 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
- C23F1/02—Local etching
-
- 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
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- C—CHEMISTRY; METALLURGY
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Abstract
本發明之濕式蝕刻方法之特徵在於:其係使用蝕刻液對基板上之含金屬膜進行蝕刻者,且上述蝕刻液係鍵結有三氟甲基與羰基之β-二酮之有機溶劑溶液,上述含金屬膜包含能夠與上述β-二酮形成錯合物之金屬元素。
Description
本發明係關於一種於半導體製造步驟等中所使用之含金屬膜之濕式蝕刻方法或蝕刻液。
於半導體元件之製造步驟中,為了將作為金屬材料、電極材料、或磁性材料等之金屬膜、或作為壓電材料、LED(Light Emitting Diode,發光二極體)發光材料、透明電極材料、或介電材料等之金屬化合物膜等含金屬膜形成所需之圖案而進行蝕刻處理。
作為含金屬膜之蝕刻方法,已知有使用β-二酮之乾式蝕刻方法。例如,揭示有具備將包含過渡金屬之籽晶層進行各向異性地氧化,並使用HFAc等氣體進行去除之乾式蝕刻步驟的圖案化金屬膜之形成方法(專利文獻1)。又,揭示有使用包含β-二酮與H2O之蝕刻氣體,對形成於基板上之Co、Fe、Zn、Mn、Ni等之金屬膜進行乾式蝕刻之方法(專利文獻2)。
且說,除專利文獻1~2中記載之使用氣體之乾式蝕刻以外,亦有使用藥液之濕式蝕刻。半導體元件之製造步驟中之濕式蝕刻係使用包含無機酸或有機酸、氧化性物質之蝕刻液(例如專利文獻3、4、5)。
此外,揭示有使用將有機胺化合物、鹼性化合物及氧化劑含有於水性介質中且pH值為7~14之蝕刻液,對Ti進行選擇地蝕刻之方法(專利文獻6)。
專利文獻1:日本專利特開2012-114287號公報
專利文獻2:日本專利特開2014-236096號公報
專利文獻3:日本專利特開2013-149852號公報
專利文獻4:日本專利特表2008-541447號公報
專利文獻5:日本專利特表2008-512869號公報
專利文獻6:日本專利特開2013-33942號公報
與乾式蝕刻相比,濕式蝕刻於裝置或藥液之成本較低,可一次地處理大量之基板之方面較為有利。然而,先前之蝕刻液有不僅與作為蝕刻對象之含金屬膜進行反應,而且亦會與不為蝕刻對象之基板等反應之情形,存在安裝有含金屬膜之裝置之特性變差之問題。
本發明係鑒於上述問題而成者,其目的在於提供一種使用蝕刻液對基板上之含金屬膜有效率地進行蝕刻之方法。
本發明者等人發現:若使用鍵結有三氟甲基與羰基之β-二酮之有機溶劑溶液作為蝕刻液,則β-二酮與金屬形成錯合物,可對基板上之含金屬膜進行蝕刻,從而完成本發明。
即,本發明之第一態樣係一種濕式蝕刻方法,其特徵在於:其係使用蝕刻液對基板上之含金屬膜進行蝕刻者,且上述蝕刻液為鍵結有三氟甲基與羰基之β-二酮與有機溶劑之溶液,上述含金屬膜包含能夠與上述β-二酮形成錯合物之金屬元素。
又,本發明之第二態樣係一種蝕刻液,其特徵在於包含:選自由異丙醇、甲醇、乙醇、丙二醇單甲醚乙酸酯(PGMEA)、甲基乙基酮
(MEK)、及丙酮所組成之群中之至少1種有機溶劑、及鍵結有三氟甲基與羰基之β-二酮。
根據本發明,可提供一種使用蝕刻液對基板上之含金屬膜有效率地進行蝕刻之方法。
(含金屬膜之濕式蝕刻方法)
於本發明之濕式蝕刻方法中,使用包含鍵結有三氟甲基與羰基之β-二酮之蝕刻液,對基板上之含金屬膜進行蝕刻。
本發明之濕式蝕刻方法中作為蝕刻對象之含金屬膜包含能夠與上述β-二酮形成錯合物之金屬元素。例如,作為含金屬膜所含之金屬元素,可列舉:Ti、Zr、Hf、V、Nb、Ta、Cr、Mo、W、Mn、Re、Fe、Ru、Os、Co、Rh、Ir、Ni、Pd、Pt、Cu、Ag、Au、Zn、Cd、Al、Ga、In、Sn、Pb及As。該等金屬可與β-二酮形成錯合物,與蝕刻液中之β-二酮形成錯合物,並溶解於蝕刻液中。進而,作為含金屬膜所含之金屬元素,較佳為Ti、Zr、Hf、V、Cr、Mn、Fe、Ru、Os、Co、Rh、Ir、Ni、Pd、Pt、Cu、Zn、Al、Ga、In、Sn、Pb、及As,更佳為Ti、Zr、Hf、Cr、Fe、Ru、Co、Ni、Pt、Cu、Zn、Al、Ga、In、Sn、及Pb。
含金屬膜較佳為包含一種金屬元素之單一成分之膜、或包含金屬元素之合金之膜、包含金屬元素之化合物之膜中之任一種。亦可對該等含金屬膜積層而成之膜進行蝕刻。作為包含複數種上述金屬元素之合金之膜,不僅為NiCo、CoFe、CoPt、MnZn、NiZn、CuZn、FeNi等合金膜,亦可為CoFeB等摻雜有其他元素之合金膜。又,作為上述金屬元素之化合物膜,可列舉:包含複數種上述金屬元素之金屬間化
合物、鉿氧化物、釕氧化物、鈦氧化物、銦錫氧化物(ITO)、銦鋅氧化物(IZO)、鎵氧化物、鈦酸鋯酸鉛等之氧化物膜、GaN、AlGaN等之氮化物膜、NiSi、CoSi、HfSi等之矽化物膜、InAs、GaAs、InGaAs等之砷化物膜、InP或GaP等之磷化物膜等。又,於包含複數種元素之含金屬膜中,各元素之組成比可取任意之值。
再者,於本發明中,基板只要由可將含金屬膜成膜且於濕式蝕刻時不與蝕刻液反應之材料構成,則並無特別限定,例如可使用:氧化矽或多晶矽、氮化矽、氮氧化矽、碳化矽等矽系半導體材料基板、或鈉鈣玻璃、硼矽酸玻璃、石英玻璃等矽酸鹽玻璃材料基板。又,除含金屬膜以外,亦可於基板上具有矽系半導體材料之膜等。
本發明之蝕刻液係鍵結有三氟甲基與羰基之β-二酮之有機溶劑溶液。與未鍵結有三氟甲基與羰基之β-二酮相比,鍵結有三氟甲基(CF3)與羰基(C=O)之β-二酮可高速地蝕刻,進而與金屬之錯合物難以凝集而不易使固體析出。因此,鍵結有三氟甲基與羰基之β-二酮即便不於蝕刻液中添加酸等,亦可達成實際之蝕刻速度。蝕刻液中所含之β-二酮只要為包含鍵結有三氟甲基(CF3)與羰基(C=O)之部位(三氟乙醯基)者,則並無特別限定,例如較佳為選自由六氟乙醯丙酮(1,1,1,5,5,5-六氟-2,4-戊二酮)、三氟乙醯丙酮(1,1,1-三氟-2,4-戊二酮)、1,1,1,6,6,6-六氟-2,4-己二酮、4,4,4-三氟-1-(2-噻吩基)-1,3-丁二酮、4,4,4-三氟-1-苯基-1,3-丁二酮、1,1,1,5,5,5-六氟-3-甲基-2,4-戊二酮、1,1,1,3,5,5,5-七氟-2,4-戊二酮及1,1,1-三氟-5,5-二甲基-2,4-己二酮所組成之群中之1種或該等之組合。
作為蝕刻液中使用之有機溶劑,並無特別限定,例如可使用:一級醇、二級醇、三級醇、苄醇、醚、酯、酮、胺、醯胺、二醇、二醇醚、鹵代烷烴或該等之組合。具體而言,作為有機溶劑,可使用:異丙醇、甲醇、乙醇、丙二醇單甲醚乙酸酯(PGMEA)、甲基乙基酮
(MEK)、丙酮或該等之組合。其原因在於:該等有機溶劑通常被使用且廉價,此外與β-二酮之相溶性亦優異。
再者,β-二酮若形成水合物則以固體之形式析出,因此,若使用水作為溶劑,則析出大量之固體,而無法用作蝕刻液。因此,蝕刻液中所含之水分較佳為1質量%以下。β-二酮若形成水合物,則以固體之形式析出,因此,若含有大量水分,則於蝕刻液中固體成分會以微粒之形式產生。由於具有微粒之蝕刻液會於處理對象殘存微粒,可能會於裝置產生不良情況,故而欠佳。
又,蝕刻液中之β-二酮之濃度較佳為1~80質量%,更佳為5~50質量%,進而較佳為10~20質量%。若β-二酮過多,則由於通常β-二酮之價格高於有機溶劑,故而蝕刻液變得過於昂貴。另一方面,若β-二酮過少,則有蝕刻變得不進行之虞。
蝕刻液亦可僅由有機溶劑與β-二酮構成,但為了進而提高蝕刻速度,或提高蝕刻選擇性,蝕刻液亦可進而包含過氧化物作為添加劑。添加劑尤佳為選自由過氧化氫、過乙酸、過碳酸鈉、過硫酸銨、過硫酸鈉、過硫酸鉀及過氧硫酸鉀所組成之群中之過氧化物。該等添加劑除了通常可獲取以外,亦可推進構成含金屬膜之金屬元素之氧化,促進金屬元素與β-二酮之錯合反應,故而較佳為添加於蝕刻液中。
又,於蝕刻液中,只要不對處理對象物產生不良影響,則為了提高蝕刻速度,或提高蝕刻選擇性,亦可進而包含各種酸作為添加劑。添加劑尤佳為選自由檸檬酸、甲酸、乙酸及三氟乙酸所組成之群。
添加劑之添加量相對於蝕刻液較佳為0.01~20質量%,更佳為0.5~15質量%,進而較佳為1~10質量%。又,亦可僅由有機溶劑、β-二酮及添加劑構成蝕刻液。
於本發明中,將具有含金屬膜之處理對象物浸漬於蝕刻液中、
或於配置有具有含金屬膜之處理對象物之蝕刻裝置內放入蝕刻液等,使蝕刻液接觸處理對象物之含金屬膜而反應,形成金屬錯合物,藉此,使含金屬膜溶解於蝕刻液中,並蝕刻。
因此,本發明之蝕刻液係對含有與β-二酮形成錯合物之金屬之材料進行蝕刻,但為了不對與β-二酮不形成錯合物之矽系半導體材料或矽酸鹽玻璃材料進行蝕刻,若使用本發明之濕式蝕刻方法,則可對於基板僅選擇性地蝕刻含金屬膜。又,於在基板上具有兩種以上之含金屬膜之情形時,亦可利用由所含之金屬等產生之蝕刻速度之差,將某含金屬膜對於另一含金屬膜選擇地蝕刻。
於本發明之濕式蝕刻方法中,關於蝕刻時之蝕刻液之溫度,只要為使蝕刻液保持液體狀態之溫度,則並無特別限定,可於-10~100℃左右內適當地設定。例如,六氟乙醯丙酮或1,1,1,3,5,5,5-七氟-2,4-戊二酮之沸點為約70℃,三氟乙醯丙酮之沸點為約105~107℃。再者,雖然並不知曉六氟乙醯丙酮與三氟乙醯丙酮之經嚴密測定之熔點的值,但一般而言,若有機物被氟化,則熔點與沸點下降,故而乙醯丙酮之沸點為140℃且熔點為-23℃,因此,認為經氟化之六氟乙醯丙酮與三氟乙醯丙酮之熔點更低。
蝕刻時間雖無特別限制,但若考慮半導體裝置製造製程之效率,則較佳為60分鐘以內。此處,所謂蝕刻時間,係指處理對象物與蝕刻液接觸之時間,例如係指於蝕刻液中浸漬作為處理對象物之基板之時間;或於進行蝕刻處理之內部設置有基板之處理腔室之內部導入蝕刻液,其後為了結束蝕刻處理而將該處理腔室內之蝕刻液排出為止之時間。
若使用本發明之濕式蝕刻方法,則可不對蝕刻對象外之基板、或矽系半導體材料之膜進行蝕刻,而對蝕刻對象之含金屬膜進行蝕刻。
又,若使用本發明之濕式蝕刻方法,則可使用價格低於乾式蝕
刻裝置之濕式蝕刻裝置,對含金屬膜進行蝕刻,故而可廉價地製造半導體裝置。
(裝置)
根據本發明之濕式蝕刻方法,可對先前之半導體製造製程中所製造之裝置之含金屬膜進行蝕刻。本發明之裝置藉由使用利用本發明之濕式蝕刻方法所蝕刻之含金屬膜,可廉價地製造。作為此種裝置,例如可列舉:太陽電池、硬碟驅動器、邏輯IC(integrated circuit,積體電路)、微處理機、動態隨機存取記憶體、相變型記憶體、強介電體記憶體、磁阻記憶體、電阻變化型記憶體、MEMS(microelectromechanical system,微機電系統)等。
以下,根據實施例詳細地說明本發明,但本發明並不限定於該實施例。
作為樣品,使用具有厚度0.1mm之各種膜之2cm×2cm之矽基板。各種金屬之單一成分、合金、化合物之膜係藉由濺鍍或化學氣相沈積法(CVD)而製膜。
再者,p-Si係多晶矽之簡稱,意指多晶矽。SiN係氮化矽,於化學式中以SiNx表示。SiON係氮氧化矽,於化學式中以SiOxNy表示。ITO係銦錫氧化物,且係於氧化銦中含有少量氧化錫之複合氧化物。IZO係銦鋅氧化物,且係於氧化銦中含有少量氧化鋅之複合氧化物。PZT係鈦酸鋯酸鉛,於化學式中以Pb(ZrxTi1-x)O3表示。CoFe、GaN、NiSi、CoSi、HfSi並不意味著各元素為一對一之組成比,各組成比可取任意之值。
於濕式蝕刻試驗中,使用六氟乙醯丙酮(HFAc)與三氟乙醯丙酮(TFAc)、1,1,1,3,5,5,5-七氟-2,4-戊二酮(HFPD)、乙醯丙酮(AcAc)作為β-二酮,使用異丙醇(IPA)與丙酮、甲醇作為有機溶劑,使用過氧化氫
(H2O2)作為添加劑,進而添加少量水等,以上述各種組成製作蝕刻液。於實施例4-1等中,將濃度35質量%之過氧化氫水溶液以相對於蝕刻液整體成為1質量%之方式添加。
又,作為比較例,使用1質量%之稀硝酸,對SiN與SiOx及Co之膜進行濕式蝕刻。
蝕刻速度係根據各種膜之濕式蝕刻前後之膜厚與蝕刻處理時間而算出。
以下,將實驗結果示於表1~3。
如實施例1-1與1-2、及比較例1-1與1-2所示般,於本發明之蝕刻液中,Co與SiN或與SiOx之選擇比成為33以上,Fe與SiN或與SiOx之選擇比成為52以上。進而,如實施例1-1~1-23與比較例1-1~1-5所示般,本發明之蝕刻液可對於矽系材料選擇性地蝕刻包含特定之金屬元素之含金屬膜。
又,如實施例2-1、2-2、比較例2-1、2-2所示般,即便使用TFAc作為β-二酮,Co與SiN或與SiOx之選擇比亦成為25以上,Fe與SiN或與SiOx之選擇比亦成為46以上,可對於矽系材料選擇性地蝕刻含金屬膜。
又,如實施例3-1、3-2、比較例3-1、3-2所示般,即便使用HFPD作為β-二酮,Co與SiN或與SiOx之選擇比亦成為28以上,Fe與SiN或與SiOx之選擇比亦成為48以上,可對於矽系材料選擇性地蝕刻含金屬膜。
如實施例4-1、4-2、比較例4-1、4-2所示般,即便使用丙酮作為有機溶劑,亦可同樣地對於矽系材料選擇性地蝕刻含金屬膜。
如實施例5-1、5-2、比較例5-1、5-2所示般,即便使用甲醇作為有機溶劑,亦可同樣地對於矽系材料選擇性地蝕刻含金屬膜。
如實施例6-1、6-2、比較例6-1、6-2所示般,藉由添加過氧化氫作為添加劑,可使Co與Fe之蝕刻速度提高,使含金屬膜與矽系材料之選擇比進一步提高。
如實施例7-1、8-1、比較例7-1、8-1所示般,HFAc之量無論為5質量%抑或50質量%,均可對於矽系材料選擇性地蝕刻含金屬膜。
又,於實施例9-1、比較例9-1中,即便使用包含1質量%水分之蝕刻液,亦可對於矽系材料選擇性地蝕刻含金屬膜。於實施例10-1、比較例10-1中,由於在蝕刻液中包含水分5質量%,故而於蝕刻液中產生微粒,於被蝕刻物亦殘存微粒。如此殘存微粒之蝕刻液無法於用於半導體裝置之含金屬膜之蝕刻中使用。
另一方面,如比較例11-1、11-2所示般,於使用乙醯丙酮作為β-二酮之情形時,無論對Co或對SiO2蝕刻速度均較慢,而難以用作蝕刻液。
又,如比較例12-1~12-3所示般,由於稀硝酸與SiN及SiOx均反應,故而亦會蝕刻矽系材料。Co與SiN之選擇比為6左右,Co與SiOx之選擇比為3左右,選擇比亦欠佳。
Claims (17)
- 一種濕式蝕刻方法,其特徵在於:其係使用蝕刻液對基板上之含金屬膜進行蝕刻者;且上述蝕刻液係鍵結有三氟甲基與羰基之β-二酮與有機溶劑之溶液;上述含金屬膜包含能夠與上述β-二酮形成錯合物之金屬元素。
- 如請求項1之濕式蝕刻方法,其中上述金屬元素係選自由Ti、Zr、Hf、V、Nb、Ta、Cr、Mo、W、Mn、Re、Fe、Ru、Os、Co、Rh、Ir、Ni、Pd、Pt、Cu、Ag、Au、Zn、Cd、Al、Ga、In、Sn、Pb及As所組成之群中之至少1種金屬元素。
- 如請求項1之濕式蝕刻方法,其中上述含金屬膜係上述金屬元素之單一成分之膜、包含上述金屬元素之合金之膜、或包含上述金屬元素之化合物之膜中之任一種。
- 如請求項1之濕式蝕刻方法,其中上述有機溶劑係選自由一級醇、二級醇、三級醇、苄醇、醚、酯、酮、胺、醯胺、二醇、二醇醚、及鹵代烷烴所組成之群中之至少1種有機溶劑。
- 如請求項4之濕式蝕刻方法,其中上述有機溶劑係選自由異丙醇、甲醇、乙醇、丙二醇單甲醚乙酸酯(PGMEA)、甲基乙基酮(MEK)、及丙酮所組成之群中之至少1種有機溶劑。
- 如請求項1之濕式蝕刻方法,其中上述蝕刻液中所含之水之量為1質量%以下。
- 如請求項1之濕式蝕刻方法,其中上述蝕刻液中之上述β-二酮之濃度為1~80體積%。
- 如請求項1之濕式蝕刻方法,其中上述β-二酮係選自由六氟乙醯丙酮、三氟乙醯丙酮、1,1,1,6,6,6-六氟-2,4-己二酮、4,4,4-三氟- 1-(2-噻吩基)-1,3-丁二酮、4,4,4-三氟-1-苯基-1,3-丁二酮、1,1,1,5,5,5-六氟-3-甲基-2,4-戊二酮、1,1,1,3,5,5,5-七氟-2,4-戊二酮及1,1,1-三氟-5,5-二甲基-2,4-己二酮所組成之群中之至少1種。
- 如請求項1之濕式蝕刻方法,其中上述蝕刻液進而包含過氧化物之添加劑。
- 如請求項9之濕式蝕刻方法,其中上述添加劑係選自由過氧化氫、過乙酸、過碳酸鈉、過硫酸銨、過硫酸鈉、過硫酸鉀及過氧硫酸鉀所組成之群中之至少1種。
- 如請求項1至10中任一項之濕式蝕刻方法,其中上述基板之材料為矽系半導體材料或矽酸鹽玻璃材料。
- 一種蝕刻液,其特徵在於包含:選自由異丙醇、甲醇、乙醇、丙二醇單甲醚乙酸酯(PGMEA)、甲基乙基酮(MEK)、及丙酮所組成之群中之至少1種有機溶劑;及鍵結有三氟甲基與羰基之β-二酮。
- 如請求項12之蝕刻液,其中上述β-二酮係選自由六氟乙醯丙酮、三氟乙醯丙酮、1,1,1,6,6,6-六氟-2,4-己二酮、4,4,4-三氟-1-(2-噻吩基)-1,3-丁二酮、4,4,4-三氟-1-苯基-1,3-丁二酮、1,1,1,5,5,5-六氟-3-甲基-2,4-戊二酮、1,1,1,3,5,5,5-七氟-2,4-戊二酮及1,1,1-三氟-5,5-二甲基-2,4-己二酮所組成之群中之至少1種。
- 如請求項12之蝕刻液,其中上述蝕刻液中之上述β-二酮之濃度為1~80質量%。
- 如請求項12至14中任一項之蝕刻液,其中上述蝕刻液實質上僅包含上述有機溶劑與上述β-二酮。
- 如請求項12至14中任一項之蝕刻液,其中上述蝕刻液進而包含過氧化物之添加劑,且上述蝕刻液實質上僅包含上述有機溶劑、上述β-二酮、及上述 添加劑。
- 一種裝置之製造方法,其特徵在於包括:使用如請求項1之濕式蝕刻方法對基板上之含金屬膜進行濕式蝕刻之步驟。
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