JP6066552B2 - 電子デバイス用洗浄液組成物 - Google Patents
電子デバイス用洗浄液組成物 Download PDFInfo
- Publication number
- JP6066552B2 JP6066552B2 JP2011267368A JP2011267368A JP6066552B2 JP 6066552 B2 JP6066552 B2 JP 6066552B2 JP 2011267368 A JP2011267368 A JP 2011267368A JP 2011267368 A JP2011267368 A JP 2011267368A JP 6066552 B2 JP6066552 B2 JP 6066552B2
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- JP
- Japan
- Prior art keywords
- cleaning
- cleaning liquid
- liquid composition
- acid
- metal
- 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.)
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- 238000004140 cleaning Methods 0.000 title claims description 98
- 239000000203 mixture Substances 0.000 title claims description 53
- 239000010949 copper Substances 0.000 claims description 59
- 239000007788 liquid Substances 0.000 claims description 57
- 239000000758 substrate Substances 0.000 claims description 32
- 239000002738 chelating agent Substances 0.000 claims description 29
- 239000004065 semiconductor Substances 0.000 claims description 21
- -1 methylene phosphonic acid Chemical compound 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 229910052802 copper Inorganic materials 0.000 claims description 16
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 9
- 238000005498 polishing Methods 0.000 claims description 9
- 235000010323 ascorbic acid Nutrition 0.000 claims description 7
- 229960005070 ascorbic acid Drugs 0.000 claims description 7
- 239000011668 ascorbic acid Substances 0.000 claims description 7
- 150000003856 quaternary ammonium compounds Chemical class 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 6
- 239000004094 surface-active agent Substances 0.000 claims description 6
- OXHDYFKENBXUEM-UHFFFAOYSA-N glyphosine Chemical compound OC(=O)CN(CP(O)(O)=O)CP(O)(O)=O OXHDYFKENBXUEM-UHFFFAOYSA-N 0.000 claims description 5
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 238000007865 diluting Methods 0.000 claims description 4
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 claims description 3
- 125000000129 anionic group Chemical group 0.000 claims description 3
- OEYIOHPDSNJKLS-UHFFFAOYSA-N choline Chemical compound C[N+](C)(C)CCO OEYIOHPDSNJKLS-UHFFFAOYSA-N 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000003945 anionic surfactant Substances 0.000 claims description 2
- 229960001231 choline Drugs 0.000 claims description 2
- 239000003085 diluting agent Substances 0.000 claims description 2
- 239000002736 nonionic surfactant Substances 0.000 claims description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 38
- 239000002184 metal Substances 0.000 description 38
- 239000000463 material Substances 0.000 description 24
- 239000012535 impurity Substances 0.000 description 23
- 239000000243 solution Substances 0.000 description 23
- 150000007514 bases Chemical class 0.000 description 19
- 239000010419 fine particle Substances 0.000 description 17
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 16
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 15
- 239000007769 metal material Substances 0.000 description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 229910052710 silicon Inorganic materials 0.000 description 10
- 239000010703 silicon Substances 0.000 description 10
- 239000002253 acid Substances 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 9
- 238000011109 contamination Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000002002 slurry Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000009102 absorption Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 7
- 150000001412 amines Chemical class 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 230000003746 surface roughness Effects 0.000 description 6
- 229910021642 ultra pure water Inorganic materials 0.000 description 6
- 239000012498 ultrapure water Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 150000001735 carboxylic acids Chemical class 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 235000006408 oxalic acid Nutrition 0.000 description 5
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 230000000415 inactivating effect Effects 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 150000005619 secondary aliphatic amines Chemical class 0.000 description 3
- 150000003510 tertiary aliphatic amines Chemical class 0.000 description 3
- RXYPXQSKLGGKOL-UHFFFAOYSA-N 1,4-dimethylpiperazine Chemical compound CN1CCN(C)CC1 RXYPXQSKLGGKOL-UHFFFAOYSA-N 0.000 description 2
- PAMIQIKDUOTOBW-UHFFFAOYSA-N 1-methylpiperidine Chemical compound CN1CCCCC1 PAMIQIKDUOTOBW-UHFFFAOYSA-N 0.000 description 2
- WYMDDFRYORANCC-UHFFFAOYSA-N 2-[[3-[bis(carboxymethyl)amino]-2-hydroxypropyl]-(carboxymethyl)amino]acetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)CN(CC(O)=O)CC(O)=O WYMDDFRYORANCC-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 2
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- 229910018557 Si O Inorganic materials 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 150000004982 aromatic amines Chemical class 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910000420 cerium oxide Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 239000004310 lactic acid Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000007517 polishing process Methods 0.000 description 2
- 229910021426 porous silicon Inorganic materials 0.000 description 2
- 150000003139 primary aliphatic amines Chemical class 0.000 description 2
- 150000003141 primary amines Chemical class 0.000 description 2
- 150000003335 secondary amines Chemical class 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 2
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical compound [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 description 2
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 description 2
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 description 2
- PVOAHINGSUIXLS-UHFFFAOYSA-N 1-Methylpiperazine Chemical compound CN1CCNCC1 PVOAHINGSUIXLS-UHFFFAOYSA-N 0.000 description 1
- GIAFURWZWWWBQT-UHFFFAOYSA-N 2-(2-aminoethoxy)ethanol Chemical compound NCCOCCO GIAFURWZWWWBQT-UHFFFAOYSA-N 0.000 description 1
- QHTUMQYGZQYEOZ-UHFFFAOYSA-N 2-(4-methylpiperazin-1-yl)ethanol Chemical compound CN1CCN(CCO)CC1 QHTUMQYGZQYEOZ-UHFFFAOYSA-N 0.000 description 1
- MIJDSYMOBYNHOT-UHFFFAOYSA-N 2-(ethylamino)ethanol Chemical compound CCNCCO MIJDSYMOBYNHOT-UHFFFAOYSA-N 0.000 description 1
- KKFDCBRMNNSAAW-UHFFFAOYSA-N 2-(morpholin-4-yl)ethanol Chemical compound OCCN1CCOCC1 KKFDCBRMNNSAAW-UHFFFAOYSA-N 0.000 description 1
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- BRBATPXWCSKYJZ-UHFFFAOYSA-N 2-ethyl-1-N,4-N,2-trimethylpiperazine-1,4-diamine Chemical compound CNN1C(CN(CC1)NC)(C)CC BRBATPXWCSKYJZ-UHFFFAOYSA-N 0.000 description 1
- KIZQNNOULOCVDM-UHFFFAOYSA-M 2-hydroxyethyl(trimethyl)azanium;hydroxide Chemical compound [OH-].C[N+](C)(C)CCO KIZQNNOULOCVDM-UHFFFAOYSA-M 0.000 description 1
- OFLNEVYCAMVQJS-UHFFFAOYSA-N 2-n,2-n-diethylethane-1,1,1,2-tetramine Chemical compound CCN(CC)CC(N)(N)N OFLNEVYCAMVQJS-UHFFFAOYSA-N 0.000 description 1
- CJNRGSHEMCMUOE-UHFFFAOYSA-N 2-piperidin-1-ylethanamine Chemical compound NCCN1CCCCC1 CJNRGSHEMCMUOE-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- TUYRAIOYNUOFNH-UHFFFAOYSA-N CP(=O)(O)OP(=O)O Chemical group CP(=O)(O)OP(=O)O TUYRAIOYNUOFNH-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FCKYPQBAHLOOJQ-UHFFFAOYSA-N Cyclohexane-1,2-diaminetetraacetic acid Chemical compound OC(=O)CN(CC(O)=O)C1CCCCC1N(CC(O)=O)CC(O)=O FCKYPQBAHLOOJQ-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 1
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 1
- AKNUHUCEWALCOI-UHFFFAOYSA-N N-ethyldiethanolamine Chemical compound OCCN(CC)CCO AKNUHUCEWALCOI-UHFFFAOYSA-N 0.000 description 1
- OPKOKAMJFNKNAS-UHFFFAOYSA-N N-methylethanolamine Chemical compound CNCCO OPKOKAMJFNKNAS-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- LHIJANUOQQMGNT-UHFFFAOYSA-N aminoethylethanolamine Chemical compound NCCNCCO LHIJANUOQQMGNT-UHFFFAOYSA-N 0.000 description 1
- IMUDHTPIFIBORV-UHFFFAOYSA-N aminoethylpiperazine Chemical compound NCCN1CCNCC1 IMUDHTPIFIBORV-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000005441 aurora Substances 0.000 description 1
- MKTJTLRLXTUJCM-UHFFFAOYSA-N azanium;hydrogen peroxide;hydroxide Chemical compound [NH4+].[OH-].OO MKTJTLRLXTUJCM-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- NDKBVBUGCNGSJJ-UHFFFAOYSA-M benzyltrimethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)CC1=CC=CC=C1 NDKBVBUGCNGSJJ-UHFFFAOYSA-M 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 229940075419 choline hydroxide Drugs 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- NISGSNTVMOOSJQ-UHFFFAOYSA-N cyclopentanamine Chemical compound NC1CCCC1 NISGSNTVMOOSJQ-UHFFFAOYSA-N 0.000 description 1
- 229960002887 deanol Drugs 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- WEHWNAOGRSTTBQ-UHFFFAOYSA-N dipropylamine Chemical compound CCCNCCC WEHWNAOGRSTTBQ-UHFFFAOYSA-N 0.000 description 1
- DUYCTCQXNHFCSJ-UHFFFAOYSA-N dtpmp Chemical compound OP(=O)(O)CN(CP(O)(O)=O)CCN(CP(O)(=O)O)CCN(CP(O)(O)=O)CP(O)(O)=O DUYCTCQXNHFCSJ-UHFFFAOYSA-N 0.000 description 1
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- CABDFQZZWFMZOD-UHFFFAOYSA-N hydrogen peroxide;hydrochloride Chemical compound Cl.OO CABDFQZZWFMZOD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- RWIVICVCHVMHMU-UHFFFAOYSA-N n-aminoethylmorpholine Chemical compound NCCN1CCOCC1 RWIVICVCHVMHMU-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- LPSKDVINWQNWFE-UHFFFAOYSA-M tetrapropylazanium;hydroxide Chemical compound [OH-].CCC[N+](CCC)(CCC)CCC LPSKDVINWQNWFE-UHFFFAOYSA-M 0.000 description 1
- 150000003536 tetrazoles Chemical class 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/38—Cationic compounds
- C11D1/62—Quaternary ammonium compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3209—Amines or imines with one to four nitrogen atoms; Quaternized amines
-
- C—CHEMISTRY; METALLURGY
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- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
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Description
(1)銅配線を有する半導体基板を洗浄する洗浄液組成物であって、金属を含まない塩基性化合物を1種または2種以上と、ホスホン酸系キレート剤を1種または2種以上とを含み、水素イオン濃度(pH)が8〜10である、前記洗浄液組成物。
(2)銅配線を有する半導体基板が、化学的機械研磨(CMP)後の基板である、上記(1)に記載の洗浄液組成物。
(3)金属を含まない塩基性化合物が第四級アンモニウム化合物または直鎖脂肪族アミンである、上記(1)または(2)に記載の洗浄液組成物。
(4)過酸化水素水を含有しない上記(1)〜(3)のいずれかに記載の洗浄液組成物。
(5)アスコルビン酸を含有しない上記(1)〜(4)のいずれかに記載の洗浄液組成物。
(7)金属を含まない塩基性化合物が水酸化テトラメチルアンモニウムを除く第四級アンモニウム化合物またはアルカノールアミンである上記(1)〜(6)のいずれかに記載の洗浄組成物。
(8)ホスホン酸系キレート剤が、N,N,N’,N’−エチレンジアミンテトラキス(メチレンホスホン酸)(EDTPO)、グリシン−N,N−ビス(メチレンホスホン酸)(グリホシン)、ニトリロトリス(メチレンホスホン酸)(NTMP)およびそれらの塩からなる群から選択される、上記(1)〜(7)のいずれかに記載の洗浄液組成物。
(9)さらにアニオン型またはノニオン型界面活性剤を1種または2種以上含む、上記(1)〜(8)のいずれかに記載の洗浄液組成物。
(10)10倍〜1000倍に希釈して上記(1)〜(9)のいずれかに記載の洗浄液組成物とするための濃縮液。
(12)pHが10〜12である、上記(10)または(11)に記載の濃縮液。
(13)上記(1)〜(9)のいずれかに記載の洗浄液組成物を用いて、銅配線を有する半導体基板を洗浄する方法。
本発明において、low−k材料とは、層間絶縁膜などに用いられる、低誘電率を有する材料であり、例えばこれに限定するものではないが、SiOC系材料、多孔質シリコン、シリコン含有有機ポリマー、芳香族アリールエーテル化合物、フロロカーボンなどが挙げられ、現在は、主に多孔質シリコンおよびシリコン含有有機ポリマーが用いられる。具体的には、Black Diamond(Applied Materials,Inc.製)、Aurora(ASM International製)、CERAMATE NCS(日揮触媒化成製)などが挙げられる。
第二級脂肪族アミンの例には、これに限定するものではないが、ジエタノールアミン、N−メチルアミノエタノール、ジプロピルアミンおよび2−エチルアミノエタノールが挙げられる。第三級脂肪族アミンの例には、これに限定するものではないが、トリエタノールアミン、ジメチルアミノエタノールおよびエチルジエタノールアミンが挙げられる。
芳香族アミンの例には、これに限定するものではないが、アニリンが挙げられる。
複素環式アミンの例には、これに限定するものではないが、ピペリジン、N−メチルピペリジン、N−アミノエチルピペリジン、ピペラジン、N−メチルピペラジン、N,N’−ジメチルピペラジン、N−ヒドロキシエチルピペラジン、N−メチル−N’−ヒドロキシエチルピペラジン、N−アミノエチルピペラジン、N,N’−ジメチルアミノエチルメチルピペラジン、モルホリン、N−メチルモルホリン、N−ヒドロキシエチルモルホリン、N−アミノエチルモルホリンが挙げられる。
本発明の洗浄液組成物は、一態様において、Cu銅表面に対して反応性が高い、Nおよび/またはSを含む複素環式化合物、例えばトリアゾール、チアゾール、テトラゾール、イミダゾールなど、ならびにチオール、アジンなどを含まないことが好ましい。このような化合物はCu表面に強固に吸着するし、そのままでは電気特性劣化の原因となるため、これらを除去する工程をさらに必要とし、特にベンゾトリアゾールは、生分解性が低く、微生物分解を用いた廃液処理への負荷が大きく、好ましくない。
シリコンウェハーを体積比アンモニア水(29重量%)−過酸化水素水(30重量%)−水混合液(体積比1:1:6)で洗浄後、回転塗布法にてカルシウム(Ca)、鉄(Fe)、ニッケル(Ni)、銅(Cu)、亜鉛(Zn)を1012atoms/cm2の表面濃度になるように汚染した。汚染したウェハーを各洗浄液に25℃、3分間無撹拌浸漬後、ウェハーを取り出して超純水にて3分間流水リンス処理、乾燥し全反射蛍光X線分析装置でウェハー表面の金属濃度を測定し、金属不純物除去性を評価した。表1に洗浄液の組成および結果を示す。
表面に電解めっき法によりCuを成膜した8インチのシリコンウェハーをCMP装置とCMPスラリー(シリカスラリー(φ 35nm)を用いて30秒間研磨した。その後、洗浄装置を用いて、各洗浄液で室温、30秒間ブラシスクラブ洗浄、超純水にて30秒間リンス処理を行い、スピン乾燥を行った。洗浄後のウェハーは、表面検査装置を用いて、表面の微粒子数を計測し、微粒子除去性を評価した。表2に洗浄液の組成および結果を示す。
表面にスパッタ法によりCuを成膜した8インチのシリコンウェハーを1.0×1.5cm2に割断し、各洗浄液48mLが入ったポリエチレン容器中に30℃、7分間無攪拌浸漬後、ウェハーを取り出した洗浄液中のCu濃度をICP−MS(誘導結合プラズマ質量分析装置)で測定し、ウェハーのCuの表面積と洗浄液中のCu濃度より、洗浄液のCuのエッチングレート(E.R.)を算出した。各洗浄液は、所定濃度に調製したキレート剤水溶液のpHをpHメーターで測定し、塩基性化合物を滴下することにより、所定のpHに調整した。表3に洗浄液の組成および結果を示す。
表面に電解めっき法によりCuを成膜した8インチのシリコンウェハーをシュウ酸(1wt%)水溶液中に25℃、1分間無攪拌浸漬処理し、超純水リンス、乾燥後、洗浄液中に25℃、30分間無攪拌浸漬処理後、超純水リンス、乾燥後、AFM(原子間力顕微鏡)を用いてCuの表面粗さ(平均面粗さ:Ra)を測定した。表4に洗浄液の組成および結果を示す。
塗布型SiOC系低誘電率(low−k)材料(誘電率:2.2)を成膜したシリコンウェハーを各洗浄液中について、25℃、3、30分間無攪拌浸漬処理し、超純水リンス、乾燥後、FT−IR(フーリエ変換赤外吸収分光分析装置)を用いて、赤外吸収(IR)スペクトルを測定し、1150cm−1付近のSi−O結合由来の吸収を比較した。
表5に洗浄液の組成および評価結果、図3〜5にIRスペクトルを示す。
Claims (9)
- 銅配線を有する半導体基板を洗浄する洗浄液組成物であって、水酸化テトラメチルアンモニウムを除く第四級アンモニウム化合物、アルカノールアミンおよびコリンから選択される1種または2種以上と、グリシン−N,N−ビス(メチレンホスホン酸)(グリホシン)、ニトリロトリス(メチレンホスホン酸)(NTMP)およびそれらの塩から選択される1種または2種以上0.1〜10mmol/Lとを含み、水素イオン濃度(pH)が8〜10であり、還元剤、過酸化水素水およびカルボン酸系キレート剤を含まない、前記洗浄液組成物。
- 銅配線を有する半導体基板が、化学的機械研磨(CMP)後の基板である、請求項1に記載の洗浄液組成物。
- アスコルビン酸を含有しない請求項1または2に記載の洗浄液組成物。
- さらにアニオン型またはノニオン型界面活性剤を1種または2種以上含む、請求項1〜3のいずれか一項に記載の洗浄液組成物。
- 界面活性剤を含まない、請求項1〜3のいずれか一項に記載の洗浄液組成物。
- 10倍〜1000倍に希釈して請求項1〜5のいずれか一項に記載の洗浄液組成物とするための濃縮液。
- 水を含む希釈液によって希釈する、請求項6に記載の濃縮液。
- pHが10〜12である、請求項6または7に記載の濃縮液。
- 請求項1〜5のいずれか一項に記載の洗浄液組成物を用いて、銅配線を有する半導体基板を洗浄する方法。
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| JP2011267368A JP6066552B2 (ja) | 2011-12-06 | 2011-12-06 | 電子デバイス用洗浄液組成物 |
| MYPI2012005069A MY165726A (en) | 2011-12-06 | 2012-11-23 | Cleaning liquid composition for electronic device |
| EP12195375.6A EP2602309B1 (en) | 2011-12-06 | 2012-12-04 | Method of cleaning an electronic device with an alkaline liquid composition comprising a phosphonic acid derivative chelating agent |
| CN2012105179042A CN103146509A (zh) | 2011-12-06 | 2012-12-05 | 清洁液组合物及其浓缩液和使用清洁液组合物的清洁方法 |
| KR1020120140462A KR102041624B1 (ko) | 2011-12-06 | 2012-12-05 | 전자 디바이스용 세정액 조성물 |
| US13/705,575 US9334470B2 (en) | 2011-12-06 | 2012-12-05 | Cleaning liquid composition for electronic device |
| TW101145895A TWI565797B (zh) | 2011-12-06 | 2012-12-06 | 電子元件用洗淨液組成物 |
| SG2012089926A SG191504A1 (en) | 2011-12-06 | 2012-12-06 | Cleaning liquid composition for electronic device |
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| US9329486B2 (en) | 2005-10-28 | 2016-05-03 | Dynaloy, Llc | Dynamic multi-purpose composition for the removal of photoresists and method for its use |
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| US7632796B2 (en) | 2005-10-28 | 2009-12-15 | Dynaloy, Llc | Dynamic multi-purpose composition for the removal of photoresists and method for its use |
| TWI450052B (zh) * | 2008-06-24 | 2014-08-21 | Dynaloy Llc | 用於後段製程操作有效之剝離溶液 |
| KR102105381B1 (ko) | 2012-02-15 | 2020-04-29 | 엔테그리스, 아이엔씨. | 조성물을 이용한 cmp-후 제거 방법 및 그의 이용 방법 |
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| US20130143785A1 (en) | 2013-06-06 |
| TWI565797B (zh) | 2017-01-11 |
| EP2602309A1 (en) | 2013-06-12 |
| JP2013119579A (ja) | 2013-06-17 |
| KR20130063474A (ko) | 2013-06-14 |
| TW201336985A (zh) | 2013-09-16 |
| MY165726A (en) | 2018-04-20 |
| KR102041624B1 (ko) | 2019-11-06 |
| SG191504A1 (en) | 2013-07-31 |
| CN103146509A (zh) | 2013-06-12 |
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