CN113528255A - 一种化学清洗液及其使用方法 - Google Patents
一种化学清洗液及其使用方法 Download PDFInfo
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- CN113528255A CN113528255A CN202010293121.5A CN202010293121A CN113528255A CN 113528255 A CN113528255 A CN 113528255A CN 202010293121 A CN202010293121 A CN 202010293121A CN 113528255 A CN113528255 A CN 113528255A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 63
- 239000000126 substance Substances 0.000 title claims abstract description 32
- 239000007788 liquid Substances 0.000 title claims description 4
- 238000000034 method Methods 0.000 title abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 22
- 239000007800 oxidant agent Substances 0.000 claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052802 copper Inorganic materials 0.000 claims abstract description 17
- 230000001590 oxidative effect Effects 0.000 claims abstract description 14
- 239000003381 stabilizer Substances 0.000 claims abstract description 12
- WTKZEGDFNFYCGP-UHFFFAOYSA-N Pyrazole Chemical compound C=1C=NNC=1 WTKZEGDFNFYCGP-UHFFFAOYSA-N 0.000 claims abstract description 11
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 8
- GIAFURWZWWWBQT-UHFFFAOYSA-N 2-(2-aminoethoxy)ethanol Chemical compound NCCOCCO GIAFURWZWWWBQT-UHFFFAOYSA-N 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-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
- HIMXGTXNXJYFGB-UHFFFAOYSA-N alloxan Chemical compound O=C1NC(=O)C(=O)C(=O)N1 HIMXGTXNXJYFGB-UHFFFAOYSA-N 0.000 claims description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 4
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 4
- XBYRMPXUBGMOJC-UHFFFAOYSA-N 1,2-dihydropyrazol-3-one Chemical compound OC=1C=CNN=1 XBYRMPXUBGMOJC-UHFFFAOYSA-N 0.000 claims description 2
- UIEABCXJWANXFS-UHFFFAOYSA-N 1h-pyrazol-5-ylmethanol Chemical compound OCC=1C=CNN=1 UIEABCXJWANXFS-UHFFFAOYSA-N 0.000 claims description 2
- YVQFZSHMTCZYMI-UHFFFAOYSA-N 2-(1h-pyrazol-4-yl)ethanol Chemical compound OCCC=1C=NNC=1 YVQFZSHMTCZYMI-UHFFFAOYSA-N 0.000 claims description 2
- BWDXTPHVKBEOKV-UHFFFAOYSA-N 2-(1h-pyrazol-5-yl)ethanol Chemical compound OCCC=1C=CNN=1 BWDXTPHVKBEOKV-UHFFFAOYSA-N 0.000 claims description 2
- FCKYPQBAHLOOJQ-UWVGGRQHSA-N 2-[[(1s,2s)-2-[bis(carboxymethyl)amino]cyclohexyl]-(carboxymethyl)amino]acetic acid Chemical compound OC(=O)CN(CC(O)=O)[C@H]1CCCC[C@@H]1N(CC(O)=O)CC(O)=O FCKYPQBAHLOOJQ-UWVGGRQHSA-N 0.000 claims description 2
- SDXAWLJRERMRKF-UHFFFAOYSA-N 3,5-dimethyl-1h-pyrazole Chemical compound CC=1C=C(C)NN=1 SDXAWLJRERMRKF-UHFFFAOYSA-N 0.000 claims description 2
- IMBBXSASDSZJSX-UHFFFAOYSA-N 4-Carboxypyrazole Chemical compound OC(=O)C=1C=NNC=1 IMBBXSASDSZJSX-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
- FYTLHYRDGXRYEY-UHFFFAOYSA-N 5-Methyl-3-pyrazolamine Chemical compound CC=1C=C(N)NN=1 FYTLHYRDGXRYEY-UHFFFAOYSA-N 0.000 claims description 2
- QZBGOTVBHYKUDS-UHFFFAOYSA-N 5-amino-1,2-dihydropyrazol-3-one Chemical compound NC1=CC(=O)NN1 QZBGOTVBHYKUDS-UHFFFAOYSA-N 0.000 claims description 2
- QBNRQCHCKIIYGV-UHFFFAOYSA-N 5-propyl-1h-pyrazole Chemical compound CCCC1=CC=NN1 QBNRQCHCKIIYGV-UHFFFAOYSA-N 0.000 claims description 2
- MIMUSZHMZBJBPO-UHFFFAOYSA-N 6-methoxy-8-nitroquinoline Chemical compound N1=CC=CC2=CC(OC)=CC([N+]([O-])=O)=C21 MIMUSZHMZBJBPO-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
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 2
- 239000004471 Glycine Substances 0.000 claims description 2
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 claims description 2
- UQFQONCQIQEYPJ-UHFFFAOYSA-N N-methylpyrazole Chemical compound CN1C=CC=N1 UQFQONCQIQEYPJ-UHFFFAOYSA-N 0.000 claims description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 2
- CZINODLNHHYFBA-UHFFFAOYSA-N azanium ethaneperoxoate Chemical compound N.C(C)(=O)OO CZINODLNHHYFBA-UHFFFAOYSA-N 0.000 claims description 2
- 229940078916 carbamide peroxide Drugs 0.000 claims description 2
- QFWPJPIVLCBXFJ-UHFFFAOYSA-N glymidine Chemical compound N1=CC(OCCOC)=CN=C1NS(=O)(=O)C1=CC=CC=C1 QFWPJPIVLCBXFJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims description 2
- NBZBKCUXIYYUSX-UHFFFAOYSA-N iminodiacetic acid Chemical compound OC(=O)CNCC(O)=O NBZBKCUXIYYUSX-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
- KHIWWQKSHDUIBK-UHFFFAOYSA-N periodic acid Chemical compound OI(=O)(=O)=O KHIWWQKSHDUIBK-UHFFFAOYSA-N 0.000 claims description 2
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 claims description 2
- NYIGEYYREVRXES-UHFFFAOYSA-N pyrazol-1-amine Chemical compound NN1C=CC=N1 NYIGEYYREVRXES-UHFFFAOYSA-N 0.000 claims description 2
- BYUMAPPWWKNLNX-UHFFFAOYSA-N pyrazol-1-ylmethanol Chemical compound OCN1C=CC=N1 BYUMAPPWWKNLNX-UHFFFAOYSA-N 0.000 claims description 2
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 claims description 2
- RNMCCPMYXUKHAZ-UHFFFAOYSA-N 2-[3,3-diamino-1,2,2-tris(carboxymethyl)cyclohexyl]acetic acid Chemical compound NC1(N)CCCC(CC(O)=O)(CC(O)=O)C1(CC(O)=O)CC(O)=O RNMCCPMYXUKHAZ-UHFFFAOYSA-N 0.000 claims 1
- 229960001484 edetic acid Drugs 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 14
- 239000002184 metal Substances 0.000 abstract description 14
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 abstract description 12
- 238000005260 corrosion Methods 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000001020 plasma etching Methods 0.000 abstract description 6
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052755 nonmetal Inorganic materials 0.000 abstract description 5
- 229910052814 silicon oxide Inorganic materials 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 238000005530 etching Methods 0.000 description 7
- 239000003989 dielectric material Substances 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 4
- 238000004377 microelectronic Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002411 adverse Effects 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
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- C11D7/3281—Heterocyclic compounds
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- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
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- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
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- 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
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
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- 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
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
- C11D7/08—Acids
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- 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
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- C11D7/10—Salts
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- 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
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- C11D7/26—Organic compounds containing oxygen
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- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
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- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3245—Aminoacids
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- 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
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- C11D7/3272—Urea, guanidine or derivatives thereof
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- 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
- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
- H01L21/02068—Cleaning during device manufacture during, before or after processing of conductive layers, e.g. polysilicon or amorphous silicon layers
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Abstract
本发明提供一种化学清洗液及其使用方法,其中所述化学清洗液含有氧化剂、吡唑及其衍生物、氧化剂稳定剂、二甘醇胺、氟化物以及水。本发明的清洗液清洗能力强,可一步有效去除铜大马士革工艺中等离子体刻蚀残留物和硬膜氮化钛,并且对金属Cu和非金属介质(如SiON、TEOS、低介质常数材料BDII等)均有较小的腐蚀速率。
Description
技术领域
本发明涉及化学清洗领域,具体涉及一种化学清洗液及其使用方法。
背景技术
随着微电子器件尺寸下降和性能要求的进一步提高,半导体器件中的金属布线临界尺寸变得越来越小。为了减少信号的延迟和降低能耗,金属铜取代金属铝、Low-k介质材料取代传统介质材料成为一种新的趋势。在广泛使用铜双大马士革工艺的情况下,寻找能够有效去除刻蚀残留物的同时又能保护金属铜及Low-k介质材料BDII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,采用金属硬掩膜氮化钛可以有效控制图形转移从而提供更好刻蚀轮廓控制。但是图形转移后,残留的金属硬掩模氮化钛不利于后续工艺填充工艺铜,常需要进一步去除金属硬掩模氮化钛。故能一步法去除金属硬掩模和光抗蚀剂蚀刻残余物的组合物,就成为铜大马士革工艺的必然要求。本发明的主要目的是高选择性地去除氮化钛硬掩膜和刻蚀残留物,并且对金属Cu和非金属介质(如SiON、TEOS、Low-k介质材料BDII等)均有较小的腐蚀速率,操作窗口较大,在半导体晶圆清洗等微电子领域具有良好的应用前景。
发明内容
为解决上述问题,本发明提供一种化学清洗液,能够有效去除氮化钛硬掩膜和刻蚀残留物,同时对金属Cu和非金属介质(如SiON、TEOS、Low-k介质材料BDII等)均有较好的抑制腐蚀作用。
具体的,本发明中的化学清洗液含有:含有氧化剂、吡唑及其衍生物、氧化剂稳定剂、二甘醇胺、氟化物以及水。
本发明中,所述氧化剂的质量百分比浓度为0.1%-15%。
本发明中,所述吡唑及其衍生物的质量百分比浓度为0.1%-10%。
本发明中,所述氧化物稳定剂的质量百分比浓度为0.01-50ppm,优选的,所述氧化物稳定剂的质量百分比浓度为0.1-20ppm。
本发明中,所述二甘醇胺的质量百分比浓度为0.1%-9%。
本发明中,所述氟化物的质量百分比浓度为0.01%-3%。
本发明中,所述氧化剂选自所述氧化剂选自H2O2、N-甲基吗啉氧化物、臭氧、高氯酸、碘酸、高碘酸、过硫酸、过氧化脲((CO(NH2)2)H2O2)、过氧乙酸、过硫酸铵、过氧乙酸铵和四氧嘧啶中的一种或多种;优选的,所述氧化物为H2O2。
本发明中,所述吡唑及其衍生物选自吡唑、1-甲基吡唑、2-氨基吡唑、3-羟基吡唑、4-羧基吡唑、5-丙基吡唑、1-羟甲基吡唑、2-羟乙基吡唑、3-羟甲基吡唑、4-羟乙基吡唑、3,5-二甲基吡唑、3-氨基-5-甲基吡唑、3-羟基-5-氨基吡唑中的一种或多种。
本发明中,所述氧化剂稳定剂选自甘氨酸、亚氨基二乙酸、氨三乙酸、乙二胺四乙酸、反式-1,2环己二胺四乙酸(CDTA)中的一种或多种。
本发明中,所述氟化物选自氟化氢、氟化铵和二氟化铵中的一种或多种。
本发明中,水为余量。
本发明中,所述化学清洗液的pH值为7.5-10.5;优选的,所述化学清洗液的pH值为8-10。
本发明的另一方面,提供一种化学清洗液的使用方法,包括将本发明的化学清洗液用于铜大马士革45nm及其以下工艺的清洗。
本发明清洗液中含有的氧化物,用于去除硬膜氮化钛;氧化物稳定剂用于清洗液中的氧化物组分,同时能够有效促进清洗液对等离子体刻蚀残留物的清洗效果;吡唑及其衍生物用于抑制清洗液对金属铜的腐蚀。通过上述组分在一定含量范围内的组合,本发明的清洗液清洗能力强,可一步有效去除铜大马士革工艺中等离子体刻蚀残留物和硬膜氮化钛,并且对金属Cu和非金属介质(如SiON、TEOS、Low-k介质材料BDII等)均有较小的腐蚀速率。
具体实施方式
下面结合具体实施例,详细阐述本发明的优势,但本发明的保护范围不仅局限于下述实施例。
实施例
按照表1中实施例1~18和对比例1~6的组分及其含量,将所示组分混合均匀,其中,水为余量。
表1 实施例1~18和对比例1~6的组分及其含量
可以理解的是,表1中所述含量均为质量百分比浓度。
随后使用实施例4、实施例8、实施例13、实施例16以及对比例1~6的清洗液在35℃进行对氮化钛、金属铜以及非金属材料的刻蚀速率的测试,并使用上述清洗液对晶圆进行清洗。实施例4、8、13、16及对比例1~6清洗液的刻蚀速率、氧化剂的稳定性及清洗效果数据记于表2。
其中,测试在北方华创单片机上进行。
表2 部分实施例与对比例的35℃蚀刻速率和清洗效果
根据表2,对比例1与实施例16的清洗数据表明:如若清洗液中不含有氧化剂,则清洗液对硬膜氮化钛进行刻蚀。对比例2与实施例16对照表明,如若不添加氧化剂稳定剂,化学清洗液中含有的氧化剂的无法稳定存在,进而影响化学清洗液的整体稳定性,从而影响化学清洗液的清洗效果;同时,对比例2中的清洗液无法清洗等离子体刻蚀残留物,表明本发明中选用的氧化剂稳定剂还可以有效促进清洗液对等离子体刻蚀残留物的清洗效果。对比例3与实施例16对照表明氟化物能够有效促进清洗液对等离子体刻蚀残留物和硬膜氮化钛的去除。对比例4与实施例16对照表明吡唑及其衍生物可以有效抑制清洗液对铜的腐蚀速率,从而实现对铜大马士革工艺器件进行有效清洗同时保证对金属铜有较好的抑制腐蚀作用。对比例5和6与实施例16对照表明,如若二甘醇胺的含量过高,超过9%时,铜的腐蚀速率过高,如果对铜大马士革工艺器件进行清洗,会使器件的电性能受到负面影响。
综上,本发明的积极进步效果在于:本发明的清洗液清洗能力强,可一步有效去除铜大马士革工艺中等离子体刻蚀残留物和硬膜氮化钛,并且对金属Cu和非金属介质(如SiON、TEOS、Low-k介质材料BDII等)均有较小的腐蚀速率,操作窗口较大,在半导体晶圆清洗等微电子领域具有良好的应用前景。
以上对本发明的具体实施例进行了详细描述,但其只是作为范例,本发明并不限制于以上描述的具体实施例。对于本领域技术人员而言,任何对本发明进行的等同修改和替代也都在本发明的范畴之中。因此,在不脱离本发明的精神和范围下所作的均等变换和修改,都应涵盖在本发明的范围内。
Claims (15)
1.一种化学清洗液,其特征在于,
含有氧化剂、吡唑及其衍生物、氧化剂稳定剂、二甘醇胺、氟化物以及水。
2.如权利要求1所述的化学清洗液,其特征在于,
所述氧化剂的质量百分比浓度为0.1%-15%。
3.如权利要求1所述的化学清洗液,其特征在于,
所述吡唑及其衍生物的质量百分比浓度为0.1%-10%。
4.如权利要求1所述的化学清洗液,其特征在于,
所述氧化物稳定剂的质量百分比浓度为0.01-50ppm。
5.如权利要求4所述的化学清洗液,其特征在于,
所述氧化物稳定剂的质量百分比浓度为0.1-20ppm。
6.如权利要求1所述的化学清洗液,其特征在于,
所述二甘醇胺的质量百分比浓度为0.1%-9%。
7.如权利要求1所述的化学清洗液,其特征在于,
所述氟化物的质量百分比浓度为0.01%-3%。
8.如权利要求1所述的化学清洗液,其特征在于,
所述氧化剂选自H2O2、N-甲基吗啉氧化物、臭氧、高氯酸、碘酸、高碘酸、过硫酸、过氧化脲((CO(NH2)2)H2O2)、过氧乙酸、过硫酸铵、过氧乙酸铵和四氧嘧啶中的一种或多种。
9.如权利要求8所述的化学清洗液,其特征在于,
所述氧化剂为H2O2。
10.如权利要求1所述的化学清洗液,其特征在于,
所述吡唑及其衍生物选自吡唑、1-甲基吡唑、2-氨基吡唑、3-羟基吡唑、4-羧基吡唑、5-丙基吡唑、1-羟甲基吡唑、2-羟乙基吡唑、3-羟甲基吡唑、4-羟乙基吡唑、3,5-二甲基吡唑、3-氨基-5-甲基吡唑、3-羟基-5-氨基吡唑中的一种或多种。
11.如权利要求1所述的化学清洗液,其特征在于,
所述氧化剂稳定剂选自甘氨酸、亚氨基二乙酸、氨三乙酸、乙二胺四乙酸、反式-1,2环己二胺四乙酸(CDTA)中的一种或多种。
12.如权利要求1所述的化学清洗液,其特征在于,
所述氟化物选自氟化氢、氟化铵和二氟化铵中的一种或多种。
13.如权利要求1所述的化学清洗液,其特征在于,
所述化学清洗液的pH值为7.5-10.5。
14.如权利要求13所述的化学清洗液,其特征在于,
所述化学清洗液的pH值为8-10。
15.一种化学清洗液的使用方法,其特征在于,将权利要求1-14中任一所述的清洗液用于铜大马士革45nm及其以下工艺的清洗。
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CN104145324A (zh) * | 2011-12-28 | 2014-11-12 | 高级技术材料公司 | 用于选择性蚀刻氮化钛的组合物和方法 |
CN105874562A (zh) * | 2013-10-11 | 2016-08-17 | E.I.内穆尔杜邦公司 | 用于选择性移除硬遮罩的移除组合物及其方法 |
CN106226991A (zh) * | 2015-05-01 | 2016-12-14 | 气体产品与化学公司 | TiN硬掩模和蚀刻残留物去除 |
CN110713868A (zh) * | 2018-07-13 | 2020-01-21 | 巴斯夫欧洲公司 | 可移除氮化钛的蚀刻后残渣清理溶液 |
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CN104145324A (zh) * | 2011-12-28 | 2014-11-12 | 高级技术材料公司 | 用于选择性蚀刻氮化钛的组合物和方法 |
CN105874562A (zh) * | 2013-10-11 | 2016-08-17 | E.I.内穆尔杜邦公司 | 用于选择性移除硬遮罩的移除组合物及其方法 |
CN106226991A (zh) * | 2015-05-01 | 2016-12-14 | 气体产品与化学公司 | TiN硬掩模和蚀刻残留物去除 |
CN110713868A (zh) * | 2018-07-13 | 2020-01-21 | 巴斯夫欧洲公司 | 可移除氮化钛的蚀刻后残渣清理溶液 |
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