CN108121175A - 一种含氟清洗液 - Google Patents
一种含氟清洗液 Download PDFInfo
- Publication number
- CN108121175A CN108121175A CN201611070472.XA CN201611070472A CN108121175A CN 108121175 A CN108121175 A CN 108121175A CN 201611070472 A CN201611070472 A CN 201611070472A CN 108121175 A CN108121175 A CN 108121175A
- Authority
- CN
- China
- Prior art keywords
- cleaning solution
- fluorine
- cleaning
- containing cleaning
- fluoride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 87
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 28
- 239000011737 fluorine Substances 0.000 title claims abstract description 28
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 27
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims abstract description 21
- 150000001412 amines Chemical class 0.000 claims abstract description 18
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003960 organic solvent Substances 0.000 claims abstract 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 8
- -1 polyethylene Polymers 0.000 claims description 7
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 6
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 4
- PCHPORCSPXIHLZ-UHFFFAOYSA-N diphenhydramine hydrochloride Chemical compound [Cl-].C=1C=CC=CC=1C(OCC[NH+](C)C)C1=CC=CC=C1 PCHPORCSPXIHLZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- YAMHXTCMCPHKLN-UHFFFAOYSA-N imidazolidin-2-one Chemical compound O=C1NCCN1 YAMHXTCMCPHKLN-UHFFFAOYSA-N 0.000 claims description 4
- NBZBKCUXIYYUSX-UHFFFAOYSA-N iminodiacetic acid Chemical compound OC(=O)CNCC(O)=O NBZBKCUXIYYUSX-UHFFFAOYSA-N 0.000 claims description 4
- UKODFQOELJFMII-UHFFFAOYSA-N pentamethyldiethylenetriamine Chemical compound CN(C)CCN(C)CCN(C)C UKODFQOELJFMII-UHFFFAOYSA-N 0.000 claims description 4
- 229920000768 polyamine Polymers 0.000 claims description 4
- 150000004040 pyrrolidinones Chemical class 0.000 claims description 4
- 150000003462 sulfoxides Chemical class 0.000 claims description 4
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- 239000000908 ammonium hydroxide Substances 0.000 claims description 3
- RWZYAGGXGHYGMB-UHFFFAOYSA-N anthranilic acid Chemical class NC1=CC=CC=C1C(O)=O RWZYAGGXGHYGMB-UHFFFAOYSA-N 0.000 claims description 3
- CCAFPWNGIUBUSD-UHFFFAOYSA-N diethyl sulfoxide Chemical compound CCS(=O)CC CCAFPWNGIUBUSD-UHFFFAOYSA-N 0.000 claims description 3
- 150000007524 organic acids Chemical class 0.000 claims description 3
- CYSGHNMQYZDMIA-UHFFFAOYSA-N 1,3-Dimethyl-2-imidazolidinon Chemical class CN1CCN(C)C1=O CYSGHNMQYZDMIA-UHFFFAOYSA-N 0.000 claims description 2
- NYCCIHSMVNRABA-UHFFFAOYSA-N 1,3-diethylimidazolidin-2-one Chemical class CCN1CCN(CC)C1=O NYCCIHSMVNRABA-UHFFFAOYSA-N 0.000 claims description 2
- QWOZZTWBWQMEPD-UHFFFAOYSA-N 1-(2-ethoxypropoxy)propan-2-ol Chemical compound CCOC(C)COCC(C)O QWOZZTWBWQMEPD-UHFFFAOYSA-N 0.000 claims description 2
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 claims description 2
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 claims description 2
- RLNZSUSARYWGKS-UHFFFAOYSA-N 2,2,2-trihydroxyethylazanium fluoride Chemical compound [F-].OC(C[NH3+])(O)O RLNZSUSARYWGKS-UHFFFAOYSA-N 0.000 claims description 2
- KGLPWQKSKUVKMJ-UHFFFAOYSA-N 2,3-dihydrophthalazine-1,4-dione Chemical compound C1=CC=C2C(=O)NNC(=O)C2=C1 KGLPWQKSKUVKMJ-UHFFFAOYSA-N 0.000 claims description 2
- WMDZKDKPYCNCDZ-UHFFFAOYSA-N 2-(2-butoxypropoxy)propan-1-ol Chemical compound CCCCOC(C)COC(C)CO WMDZKDKPYCNCDZ-UHFFFAOYSA-N 0.000 claims description 2
- GBHCABUWWQUMAJ-UHFFFAOYSA-N 2-hydrazinoethanol Chemical class NNCCO GBHCABUWWQUMAJ-UHFFFAOYSA-N 0.000 claims description 2
- KFGVDCBVGNMCJC-UHFFFAOYSA-N 2-hydrazinylbenzoic acid Chemical compound NNC1=CC=CC=C1C(O)=O KFGVDCBVGNMCJC-UHFFFAOYSA-N 0.000 claims description 2
- 150000008625 2-imidazolidinones Chemical class 0.000 claims description 2
- FUSNOPLQVRUIIM-UHFFFAOYSA-N 4-amino-2-(4,4-dimethyl-2-oxoimidazolidin-1-yl)-n-[3-(trifluoromethyl)phenyl]pyrimidine-5-carboxamide Chemical compound O=C1NC(C)(C)CN1C(N=C1N)=NC=C1C(=O)NC1=CC=CC(C(F)(F)F)=C1 FUSNOPLQVRUIIM-UHFFFAOYSA-N 0.000 claims description 2
- ZMZGIVVRBMFZSG-UHFFFAOYSA-N 4-hydroxybenzohydrazide Chemical class NNC(=O)C1=CC=C(O)C=C1 ZMZGIVVRBMFZSG-UHFFFAOYSA-N 0.000 claims description 2
- 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 claims description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 2
- 229910017665 NH4HF2 Inorganic materials 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 235000011054 acetic acid Nutrition 0.000 claims description 2
- OFLXLNCGODUUOT-UHFFFAOYSA-N acetohydrazide Chemical compound C\C(O)=N\N OFLXLNCGODUUOT-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 150000001408 amides Chemical class 0.000 claims description 2
- LDDQLRUQCUTJBB-UHFFFAOYSA-N ammonium fluoride Chemical compound [NH4+].[F-] LDDQLRUQCUTJBB-UHFFFAOYSA-N 0.000 claims description 2
- KVBCYCWRDBDGBG-UHFFFAOYSA-N azane;dihydrofluoride Chemical compound [NH4+].F.[F-] KVBCYCWRDBDGBG-UHFFFAOYSA-N 0.000 claims description 2
- VJRITMATACIYAF-UHFFFAOYSA-N benzenesulfonohydrazide Chemical compound NNS(=O)(=O)C1=CC=CC=C1 VJRITMATACIYAF-UHFFFAOYSA-N 0.000 claims description 2
- WARCRYXKINZHGQ-UHFFFAOYSA-N benzohydrazide Chemical compound NNC(=O)C1=CC=CC=C1 WARCRYXKINZHGQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 2
- 229940043237 diethanolamine Drugs 0.000 claims description 2
- 229960001484 edetic acid Drugs 0.000 claims description 2
- XZBIXDPGRMLSTC-UHFFFAOYSA-N formohydrazide Chemical compound NNC=O XZBIXDPGRMLSTC-UHFFFAOYSA-N 0.000 claims description 2
- 239000012493 hydrazine sulfate Substances 0.000 claims description 2
- 229910000377 hydrazine sulfate Inorganic materials 0.000 claims description 2
- 229940102253 isopropanolamine Drugs 0.000 claims description 2
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 claims description 2
- PZYDAVFRVJXFHS-UHFFFAOYSA-N n-cyclohexyl-2-pyrrolidone Chemical class O=C1CCCN1C1CCCCC1 PZYDAVFRVJXFHS-UHFFFAOYSA-N 0.000 claims description 2
- POVXOWVFLAAVBH-UHFFFAOYSA-N n-formamidoformamide Chemical compound O=CNNC=O POVXOWVFLAAVBH-UHFFFAOYSA-N 0.000 claims description 2
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims description 2
- 125000003431 oxalo group Chemical group 0.000 claims description 2
- UYWQUFXKFGHYNT-UHFFFAOYSA-N phenylmethyl ester of formic acid Natural products O=COCC1=CC=CC=C1 UYWQUFXKFGHYNT-UHFFFAOYSA-N 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- CIBMHJPPKCXONB-UHFFFAOYSA-N propane-2,2-diol Chemical compound CC(C)(O)O CIBMHJPPKCXONB-UHFFFAOYSA-N 0.000 claims description 2
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- DKACXUFSLUYRFU-UHFFFAOYSA-N tert-butyl n-aminocarbamate Chemical compound CC(C)(C)OC(=O)NN DKACXUFSLUYRFU-UHFFFAOYSA-N 0.000 claims description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims 3
- WDQFELCEOPFLCZ-UHFFFAOYSA-N 1-(2-hydroxyethyl)pyrrolidin-2-one Chemical compound OCCN1CCCC1=O WDQFELCEOPFLCZ-UHFFFAOYSA-N 0.000 claims 1
- VPUAYOJTHRDUTK-UHFFFAOYSA-N 1-ethylpyrrole Chemical class CCN1C=CC=C1 VPUAYOJTHRDUTK-UHFFFAOYSA-N 0.000 claims 1
- QCAHUFWKIQLBNB-UHFFFAOYSA-N 3-(3-methoxypropoxy)propan-1-ol Chemical compound COCCCOCCCO QCAHUFWKIQLBNB-UHFFFAOYSA-N 0.000 claims 1
- BGRDGMRNKXEXQD-UHFFFAOYSA-N Maleic hydrazide Chemical compound OC1=CC=C(O)N=N1 BGRDGMRNKXEXQD-UHFFFAOYSA-N 0.000 claims 1
- 239000005983 Maleic hydrazide Substances 0.000 claims 1
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical class CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims 1
- 125000000218 acetic acid group Chemical class C(C)(=O)* 0.000 claims 1
- OWIUPIRUAQMTTK-UHFFFAOYSA-N carbazic acid Chemical compound NNC(O)=O OWIUPIRUAQMTTK-UHFFFAOYSA-N 0.000 claims 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- VYSYZMNJHYOXGN-UHFFFAOYSA-N ethyl n-aminocarbamate Chemical compound CCOC(=O)NN VYSYZMNJHYOXGN-UHFFFAOYSA-N 0.000 claims 1
- 150000002576 ketones Chemical class 0.000 claims 1
- HKOOXMFOFWEVGF-UHFFFAOYSA-N phenylhydrazine Chemical compound NNC1=CC=CC=C1 HKOOXMFOFWEVGF-UHFFFAOYSA-N 0.000 claims 1
- 229940067157 phenylhydrazine Drugs 0.000 claims 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 claims 1
- 150000003235 pyrrolidines Chemical class 0.000 claims 1
- 150000003457 sulfones Chemical class 0.000 claims 1
- GTDKXDWWMOMSFL-UHFFFAOYSA-M tetramethylazanium;fluoride Chemical compound [F-].C[N+](C)(C)C GTDKXDWWMOMSFL-UHFFFAOYSA-M 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 32
- 238000005260 corrosion Methods 0.000 abstract description 32
- 239000010949 copper Substances 0.000 abstract description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052802 copper Inorganic materials 0.000 abstract description 20
- 239000004065 semiconductor Substances 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000003989 dielectric material Substances 0.000 abstract description 6
- 238000001020 plasma etching Methods 0.000 abstract description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 5
- 229910052710 silicon Inorganic materials 0.000 abstract description 5
- 239000010703 silicon Substances 0.000 abstract description 5
- 238000007654 immersion Methods 0.000 abstract description 4
- 239000007769 metal material Substances 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract description 3
- 238000004377 microelectronic Methods 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 19
- 239000002184 metal Substances 0.000 description 19
- 239000003112 inhibitor Substances 0.000 description 9
- 229920002120 photoresistant polymer Polymers 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical class ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 4
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 3
- 239000012964 benzotriazole Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- MOFINMJRLYEONQ-UHFFFAOYSA-N [N].C=1C=CNC=1 Chemical compound [N].C=1C=CNC=1 MOFINMJRLYEONQ-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000004380 ashing Methods 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 150000002222 fluorine compounds Chemical class 0.000 description 2
- 229940042795 hydrazides for tuberculosis treatment Drugs 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- ZFPGARUNNKGOBB-UHFFFAOYSA-N 1-Ethyl-2-pyrrolidinone Chemical class CCN1CCCC1=O ZFPGARUNNKGOBB-UHFFFAOYSA-N 0.000 description 1
- WAEVWDZKMBQDEJ-UHFFFAOYSA-N 2-[2-(2-methoxypropoxy)propoxy]propan-1-ol Chemical compound COC(C)COC(C)COC(C)CO WAEVWDZKMBQDEJ-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000001243 acetic acids Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229940031098 ethanolamine Drugs 0.000 description 1
- WBJINCZRORDGAQ-UHFFFAOYSA-N formic acid ethyl ester Natural products CCOC=O WBJINCZRORDGAQ-UHFFFAOYSA-N 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010849 ion bombardment Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- WFJRIDQGVSJLLH-UHFFFAOYSA-N methyl n-aminocarbamate Chemical compound COC(=O)NN WFJRIDQGVSJLLH-UHFFFAOYSA-N 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- UIMIQJVANYZMKL-UHFFFAOYSA-N n-phenylacetohydrazide Chemical class CC(=O)N(N)C1=CC=CC=C1 UIMIQJVANYZMKL-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000008237 rinsing water Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 229960004418 trolamine Drugs 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
- G03F7/422—Stripping or agents therefor using liquids only
- G03F7/425—Stripping or agents therefor using liquids only containing mineral alkaline compounds; containing organic basic compounds, e.g. quaternary ammonium compounds; containing heterocyclic basic compounds containing nitrogen
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
- G03F7/422—Stripping or agents therefor using liquids only
- G03F7/426—Stripping or agents therefor using liquids only containing organic halogen compounds; containing organic sulfonic acids or salts thereof; containing sulfoxides
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cleaning Or Drying Semiconductors (AREA)
Abstract
本发明公开了一种含氟清洗液,其含有:氟化物、有机胺、有机溶剂、水和肼及其衍生物。本发明的清洗液清洗能力强,可有效去除半导体制程过程中等离子刻蚀残留物,尤其是在铜马士革工艺中灰化后的残留物,并且在高转速单片机清洗中对非金属材料(如氮氧化硅和低介质材料)和金属材料(如Cu)等有较小的腐蚀速率,适用于批量浸泡式、批量旋转喷雾式清洗方式,尤其适用于高转速单片旋转式的清洗方式,克服了传统清洗液铜腐蚀抑制的缺陷,在半导体晶片清洗等微电子领域具有良好的应用前景。
Description
技术领域
本发明涉及半导体元器件清洗液领域,尤其涉及一种含氟清洗液。
背景技术
在半导体元器件制造过程中,光阻层的涂敷、曝光和成像对元器件的图案制造来说是必要的工艺步骤。在图案化的最后(即在光阻层的涂敷、成像、离子植入和蚀刻之后)进行下一工艺步骤之前,光阻层材料的残留物需彻底除去。在掺杂步骤中离子轰击会硬化光阻层聚合物,因此使得光阻层变得不易溶解从而更难于除去。
目前,在半导体制造工业中一般使用两步法(干法灰化和湿蚀刻)除去这层光阻层膜。第一步利用干法灰化除去光阻层(PR)的大部分。第二步利用缓蚀剂组合物湿蚀刻/清洗工艺除去剩余的光阻层,其具体步骤一般为清洗液清洗/漂洗/去离子水漂洗。在此过程中,要求只除去残留的聚合物光阻层和无机物,而不能攻击损害金属层。随着半导体制造技术水平的提高以及电子器件尺寸的降低,在半导体制造领域中使用金属铜、low-k介质材料越来越多。尤其是铜双大马士革工艺越来越广泛的情况下,寻找能够有效去除刻蚀残留物的同时又能保护low-k介质材料、非金属材料和金属材料的清洗液就越来越重要。同时随着半导体制程尺寸越来越小,清洗方式也越来越广泛的使用到高速旋转单片清洗,因此对金属和非金属材料的腐蚀控制也越来越严格,开发能够适用于批量浸泡式、批量旋转喷雾式清洗方式,尤其适用于高转速单片旋转式的清洗方式的清洗液是亟待解决的问题。
现有技术中典型的清洗液有以下几种:胺类清洗液,半水性胺基(非羟胺类)清洗液以及氟化物类清洗液。其中,前两类清洗液主要应用在金属铝线的清洗工艺中,该清洗液需要在高温下清洗,一般在60℃到80℃之间,存在对金属的腐蚀速率较大的问题。而现有的氟化物类清洗液虽然能在较低的温度(室温到50℃)下进行清洗,但仍然存在着各种各样的缺点。例如,不能同时控制金属和非金属基材的腐蚀,清洗后容易造成通道特征尺寸的改变,从而改变半导体结构;采用传统苯并三氮唑作金属铜的腐蚀抑制剂,虽然金属铜的蚀刻速率较小,但是传统唑类腐蚀抑制剂(BTA)不仅难以降解对生物体系不环保,而且在清洗结束后容易吸附在铜表面,导致集成电路的污染,会引起电路内不可预见的导电故障;有些现有技术避开传统唑类使用能够控制铜腐蚀和表面吸附的抑制剂,但是存在黏度表面张力大清洗效果不理想的问题。
US6,387,859公开了含氟同时含有羟胺的清洗液,使用苯并三氮唑类(BTA)作为铜的腐蚀抑制剂,虽然保护效果较好,仍然未能解决表面吸附的问题,也没有解决在高速旋转下清洗液对金属腐蚀在控制情况。US5,972,862公开了含氟物质的清洗组合物,其包括含氟物质、无机或有机酸、季铵盐和有机极性溶剂,pH为7~11,由于其清洗效果不是很稳定,存在多样的问题。US6,224,785公开了一种对铜有极低腐蚀的含氟清洗组合物,尽管该清洗液对铜的保护非常优良,不存在腐蚀抑制表面吸附问题,但是其清洗液的粘度与表面张力都很大,从而影响清洗效果,业界使用中也常常存在球形颗粒(ball defect)的问题。
因此,为了克服现有清洗液的缺陷,适应新的清洗要求,比如保护低介电材料、环境更为友善、克服金属腐蚀抑制剂表面吸附、低缺陷水平、低刻蚀率以及适用于高转速旋转洗清方式等,亟待寻求新的清洗液。
发明内容
为解决上述问题,本发明提供一种不含有羟胺及氧化剂含氟清洗液,该清洗液清洗能力强,可有效去除半导体制程过程中等离子刻蚀残留物,尤其是在铜马士革工艺中灰化后的残留物,并且在高转速单片机清洗中对非金属材料(如氮氧化硅和低介质材料)和金属材料(如Cu)等有较小的腐蚀速率。
具体地,本发明提供一种含氟清洗液,其特征在于,含有以下组分及含量:
优选地,所述溶剂包括亚砜、咪唑烷酮、吡咯烷酮、酰胺和醚中的一种或多种。
优选地,所述亚砜包括二甲基亚砜、二乙基亚砜和甲乙基亚砜中的一种或多种;所述咪唑烷酮包括2-咪唑烷酮、1,3-二甲基-2-咪唑烷酮和1,3-二乙基-2-咪唑烷酮中的一种或多种;所述吡咯烷酮包括N-甲基吡咯烷酮、N-乙基吡咯烷酮、N-环己基吡咯烷酮和N-羟乙基吡咯烷酮中的一种或多种;所述醚包括丙二醇单甲醚、丙二醇单乙醚、丙二醇单丁醚、二丙二醇单甲醚、二丙二醇单乙醚、二丙二醇单丁醚和三丙二醇单甲醚中的一种或多种。
优选地,所述氟化物包括氟化氢、和/或氟化氢与碱形成的盐。其中,所述碱包括氨水、季胺氢氧化物和/或醇胺。
优选地,所述氟化物包括氟化氢(HF)、氟化铵(NH4F)、氟化氢铵(NH4HF2)、四甲基氟化铵(N(CH3)4F)和三羟乙基氟化铵(N(CH2OH)3HF)中的一种或多种。
优选地,所述有机胺包括含羟基、氨基和羧基的有机胺中的一种或多种。所述有机胺的存在,有利于pH值稳定,提高清洗过程的稳定性和重现性。
优选地,所述含羟基的有机胺为醇胺;所述含氨基的有机胺为有机多胺;所述含羧基的有机胺为含氨基的有机酸。
优选地,所述有机胺包括乙醇胺、二乙醇胺、三乙醇胺、异丙醇胺、N,N-二甲基乙醇胺和N-甲基二乙醇胺,二乙烯三胺、五甲基二乙烯三胺和多乙烯多胺,2-氨基乙酸、2-氨基苯甲酸、亚氨基二乙酸,氨三乙酸和乙二胺四乙酸中的一种或多种。
更优选地,所述有机胺包括五甲基二乙烯三胺、亚氨基二乙酸和三乙醇胺中的一种或多种。
优选地,所述肼及其衍生物包括肼基甲酸甲酯、对肼基苯甲酸、肼基甲酸苄酯、肼基甲酸乙酯、肼基甲酸叔丁酯、硫酸肼、乙酰肼、甲酰肼、苯甲酰肼、草酰二肼、二甲酰肼、烟酸酰肼、碳酸二酰肼、苯磺酰肼、2-羟乙基肼、N-乙酰苯肼、对甲苯磺酰肼、邻苯二甲酰肼、顺丁烯二酰肼、4-羟基苯甲酰肼中的一种或多种。
有现有技术相比较,本发明的积极进步效果在于:
1)本发明所公开的含氟清洗液中不含有羟胺及氧化剂,其可有效去除半导体制程过程中等离子刻蚀的残留物,尤其是在铜马士革工艺中灰化后的残留物;并且在高转速单片机清洗中对非金属材料(如氮氧化硅和低介质材料)和金属材料(如Cu)等有较小的腐蚀速率;
2)本发明所公开的含氟清洗液适用于批量浸泡式、批量旋转喷雾式清洗方式,尤其适用于高转速单片旋转式的清洗方式,在高转速单片清洗条件下,本发明的清洗液克服了传统清洗液铜腐蚀抑制的缺陷;
3)另外,本发明提供的含氟清洗液可以在25℃至55℃下清洗等离子刻蚀残留物,在半导体晶片清洗等微电子领域具有良好的应用前景。
具体实施方式
本发明所用试剂及原料均市售可得。本发明的清洗液由上述成分简单均匀混合即可制得。
表1实施例及对比例清洗液的组分和含量
效果实施例
为了考察该类清洗液在浸泡、低转速(<60rpmm/min)和高转速(>200rpm/min)下对金属和非金属材料的腐蚀情况,并进一步考察在单片高速旋转清洗方式下对含有等离子刻蚀残留物的金属孔道的清洗情况,本发明采用了如下技术手段:即将金属(Cu)空白硅片和非金属(SiON和低介质(low-k)材料(BD))空白硅片分别浸入清洗液中,在40℃下以静止或不同转速浸泡30min,经去离子水漂洗后用高纯氮气吹干。将大马士革工艺中含有等离子刻蚀残留物的金属孔道晶圆置于高速旋转清洗方式下,在25℃至50℃下旋转1.5min,经去离子水漂洗后用高纯氮气吹干。残留物的清洗效果及对金属和非金属的腐蚀情况如表2所示。
表2部分实施例及对比例的腐蚀速率和清洗效果
从表2中可以看出:本发明的清洗液对半导体制成中所用的金属(如Cu)和非金属(SiON和BD)基本不会侵蚀,其腐蚀速率在浸泡、低转速(<60rpmm/min)和高转速(>200rpm/min)均接近或小于半导体业界通常在单片高速旋转清洗下所要求的非金腐蚀速率</min和金属腐蚀速率</min。
从对比例1和对比例2与实施例5和实施例12可以看出,使用半导体业界常用金属腐蚀抑制剂BTA(苯并三唑)或者氮唑类腐蚀抑制剂,在浸泡、低转速(<60rpmm/min)下能够抑制铜的腐蚀,但是在高转速下不能控制铜的蚀刻速率,而本发明的清洗液在浸泡、低转速(<60rpmm/min)和高转速(>200rpm/min)都能够控制金属和非金属的腐蚀速率,尤其是控制高速下的铜腐蚀问题。对比例3使用专利文献CN101412949中公开的含氟清洗液,同样发现,无法控制高转速下的铜腐蚀问题。
进一步考察清洗液对等离子刻蚀残留物进行清洗发现,其等离子刻蚀残留物均被去除,而且高转速下基本没有腐蚀金属和非金属,大马士革工艺下铜的金属孔道没有变宽,使用常用的BTA和氮唑类腐蚀抑制剂的清洗液均出现了通道电性能测试不合格的问题,使用未加入肼及其衍生物公开过的含氟清洗液(CN101412949)出现了通道变宽的问题,进一步验证了肼及其衍生物的加入在保证清洗效果的同时可以有效的控制金属的腐蚀,同时在高速旋转单片机清洗下仍然可以控制金属铜的腐蚀速率。
应当理解的是,本发明中所提及的%,为质量百分比单位符号。
应当注意的是,本发明的实施例有较佳的实施性,且并非对本发明作任何形式的限制,任何熟悉该领域的技术人员可能利用上述揭示的技术内容变更或修饰为等同的有效实施例,但凡未脱离本发明技术方案的内容,依据本发明的技术实质对以上实施例所作的任何修改或等同变化及修饰,均仍属于本发明技术方案的范围内。
Claims (12)
1.一种含氟清洗液,其特征在于,含有以下组分及含量:
a)有机溶剂 10%~75%;
b)水 20%~60%;
c)氟化物 0.01%~25%;
d)有机胺 0.5%~15%;
e)肼及其衍生物 0.01%~10%。
2.如权利要求1所述的含氟清洗液,其特征在于,所述溶剂包括亚砜、咪唑烷酮、吡咯烷酮、酰胺和醚中的一种或多种。
3.如权利要求2所述的含氟清洗液,其特征在于,所述亚砜包括二甲基亚砜、二乙基亚砜和甲乙基亚砜中的一种或多种;所述咪唑烷酮包括2-咪唑烷酮、1,3-二甲基-2-咪唑烷酮和1,3-二乙基-2-咪唑烷酮中的一种或多种;所述吡咯烷酮包括N-甲基吡咯烷酮、N-乙基吡咯烷酮、N-环己基吡咯烷酮和N-羟乙基吡咯烷酮中的一种或多种;所述醚包括丙二醇单甲醚、丙二醇单乙醚、丙二醇单丁醚、二丙二醇单甲醚、二丙二醇单乙醚、二丙二醇单丁醚和三丙二醇单甲醚中的一种或多种。
4.如权利要求1所述的含氟清洗液,其特征在于,所述氟化物包括氟化氢、和/或氟化氢与碱形成的盐。
5.如权利要求4所述的含氟清洗液,其特征在于,所述碱包括氨水、季胺氢氧化物和/或醇胺。
6.如权利要求4所述的含氟清洗液,其特征在于,所述氟化物包括氟化氢(HF)、氟化铵(NH4F)、氟化氢铵(NH4HF2)、四甲基氟化铵(N(CH3)4F)和三羟乙基氟化铵(N(CH2OH)3HF)中的一种或多种。
7.如权利要求1所述的含氟清洗液,其特征在于,所述有机胺包括含羟基、氨基和羧基的有机胺中的一种或多种。
8.如权利要求7所述的含氟清洗液,其特征在于,所述含羟基的有机胺为醇胺;所述含氨基的有机胺为有机多胺;所述含羧基的有机胺为含氨基的有机酸。
9.如权利要求1所述的含氟清洗液,其特征在于,所述有机胺包括乙醇胺、二乙醇胺、三乙醇胺、异丙醇胺、N,N-二甲基乙醇胺和N-甲基二乙醇胺,二乙烯三胺、五甲基二乙烯三胺和多乙烯多胺,2-氨基乙酸、2-氨基苯甲酸、亚氨基二乙酸,氨三乙酸和乙二胺四乙酸中的一种或多种。
10.如权利要求1所述的含氟清洗液,其特征在于,所述有机胺包括五甲基二乙烯三胺、亚氨基二乙酸和三乙醇胺中的一种或多种。
11.如权利要求1所述的含氟清洗液,其特征在于,所述肼及其衍生物包括肼基甲酸甲酯、对肼基苯甲酸、肼基甲酸苄酯、肼基甲酸乙酯、肼基甲酸叔丁酯、硫酸肼、乙酰肼、甲酰肼、苯甲酰肼、草酰二肼、二甲酰肼、烟酸酰肼、碳酸二酰肼、苯磺酰肼、2-羟乙基肼、N-乙酰苯肼、对甲苯磺酰肼、邻苯二甲酰肼、顺丁烯二酰肼、4-羟基苯甲酰肼中的一种或多种。
12.如权利要求1所述的含氟清洗液,其特征在于,所述肼及其衍生物的质量百分比含量为0.05-5%。
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CN102012645A (zh) * | 2010-12-24 | 2011-04-13 | 东莞市智高化学原料有限公司 | 一种光刻胶剥离液 |
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CN1218222C (zh) * | 2000-07-10 | 2005-09-07 | Ekc技术公司 | 用于清洁半导体设备上有机残余物和等离子蚀刻残余物的组合物 |
CN101412949A (zh) * | 2007-10-19 | 2009-04-22 | 安集微电子(上海)有限公司 | 一种等离子刻蚀残留物清洗液 |
CN104946429A (zh) * | 2014-03-26 | 2015-09-30 | 安集微电子科技(上海)有限公司 | 一种低蚀刻的去除光阻蚀刻残留物的清洗液 |
CN105807577A (zh) * | 2014-12-29 | 2016-07-27 | 安集微电子科技(上海)有限公司 | 一种光阻残留物清洗液 |
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CN110669597A (zh) * | 2018-07-03 | 2020-01-10 | 安集微电子科技(上海)股份有限公司 | 一种含氟清洗液 |
WO2023040308A1 (zh) | 2021-09-14 | 2023-03-23 | 浙江奥首材料科技有限公司 | 一种铜表面钝化组合物、其用途及包含其的光刻胶剥离液 |
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CN108121175B (zh) | 2021-02-02 |
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