WO2013100644A1 - 식각액 조성물 및 이를 이용한 습식 식각 방법 - Google Patents
식각액 조성물 및 이를 이용한 습식 식각 방법 Download PDFInfo
- Publication number
- WO2013100644A1 WO2013100644A1 PCT/KR2012/011600 KR2012011600W WO2013100644A1 WO 2013100644 A1 WO2013100644 A1 WO 2013100644A1 KR 2012011600 W KR2012011600 W KR 2012011600W WO 2013100644 A1 WO2013100644 A1 WO 2013100644A1
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- WO
- WIPO (PCT)
- Prior art keywords
- ammonium
- acid
- etching
- semiconductor substrate
- weight
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims abstract description 50
- 238000001039 wet etching Methods 0.000 title claims description 30
- 238000000034 method Methods 0.000 title claims description 29
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 39
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 15
- 150000003868 ammonium compounds Chemical class 0.000 claims abstract description 12
- -1 sulfonic acid compound Chemical class 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims description 66
- 238000005530 etching Methods 0.000 claims description 60
- 239000004065 semiconductor Substances 0.000 claims description 47
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 25
- 229910052710 silicon Inorganic materials 0.000 claims description 25
- 239000010703 silicon Substances 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 14
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 10
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 7
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 claims description 6
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 claims description 6
- 150000003460 sulfonic acids Chemical class 0.000 claims description 6
- XZXYQEHISUMZAT-UHFFFAOYSA-N 2-[(2-hydroxy-5-methylphenyl)methyl]-4-methylphenol Chemical compound CC1=CC=C(O)C(CC=2C(=CC=C(C)C=2)O)=C1 XZXYQEHISUMZAT-UHFFFAOYSA-N 0.000 claims description 5
- KWIPUXXIFQQMKN-UHFFFAOYSA-N 2-azaniumyl-3-(4-cyanophenyl)propanoate Chemical compound OC(=O)C(N)CC1=CC=C(C#N)C=C1 KWIPUXXIFQQMKN-UHFFFAOYSA-N 0.000 claims description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 5
- 229940090948 ammonium benzoate Drugs 0.000 claims description 5
- 235000019270 ammonium chloride Nutrition 0.000 claims description 5
- 229960001040 ammonium chloride Drugs 0.000 claims description 5
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 5
- 229940107816 ammonium iodide Drugs 0.000 claims description 5
- WZTQWXKHLAJTRC-UHFFFAOYSA-N benzyl 2-amino-6,7-dihydro-4h-[1,3]thiazolo[5,4-c]pyridine-5-carboxylate Chemical compound C1C=2SC(N)=NC=2CCN1C(=O)OCC1=CC=CC=C1 WZTQWXKHLAJTRC-UHFFFAOYSA-N 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 5
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 5
- 229940098779 methanesulfonic acid Drugs 0.000 claims description 5
- CHKVPAROMQMJNQ-UHFFFAOYSA-M potassium bisulfate Chemical compound [K+].OS([O-])(=O)=O CHKVPAROMQMJNQ-UHFFFAOYSA-M 0.000 claims description 5
- 229910000343 potassium bisulfate Inorganic materials 0.000 claims description 5
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 5
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 5
- 235000011151 potassium sulphates Nutrition 0.000 claims description 5
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 claims description 5
- 229910000342 sodium bisulfate Inorganic materials 0.000 claims description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 5
- 235000011152 sodium sulphate Nutrition 0.000 claims description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 4
- GUSFEBGYPWJUSS-UHFFFAOYSA-N pentaazanium;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O GUSFEBGYPWJUSS-UHFFFAOYSA-N 0.000 claims description 4
- VKFFEYLSKIYTSJ-UHFFFAOYSA-N tetraazanium;phosphonato phosphate Chemical compound [NH4+].[NH4+].[NH4+].[NH4+].[O-]P([O-])(=O)OP([O-])([O-])=O VKFFEYLSKIYTSJ-UHFFFAOYSA-N 0.000 claims description 4
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 claims description 4
- RRDLRSZDOZBPIC-UHFFFAOYSA-N diazanium hydrogen carbonate acetate Chemical compound [NH4+].[NH4+].CC([O-])=O.OC([O-])=O RRDLRSZDOZBPIC-UHFFFAOYSA-N 0.000 claims description 3
- CCIVGXIOQKPBKL-UHFFFAOYSA-M ethanesulfonate Chemical compound CCS([O-])(=O)=O CCIVGXIOQKPBKL-UHFFFAOYSA-M 0.000 claims description 3
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 3
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 2
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 2
- 239000006012 monoammonium phosphate Substances 0.000 claims description 2
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 2
- ZRIUUUJAJJNDSS-UHFFFAOYSA-N ammonium phosphates Chemical compound [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=O ZRIUUUJAJJNDSS-UHFFFAOYSA-N 0.000 claims 1
- 239000003054 catalyst Substances 0.000 abstract 2
- 239000012153 distilled water Substances 0.000 description 16
- 239000012535 impurity Substances 0.000 description 16
- 229960002050 hydrofluoric acid Drugs 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000002156 mixing Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 2
- 239000005695 Ammonium acetate Substances 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229940043376 ammonium acetate Drugs 0.000 description 2
- 235000019257 ammonium acetate Nutrition 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- 235000012501 ammonium carbonate Nutrition 0.000 description 2
- 229940059913 ammonium carbonate Drugs 0.000 description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 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 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- 239000005696 Diammonium phosphate Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229940010556 ammonium phosphate Drugs 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 229910000388 diammonium phosphate Inorganic materials 0.000 description 1
- 235000019838 diammonium phosphate Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- UNRFQJSWBQGLDR-UHFFFAOYSA-N methane trihydrofluoride Chemical compound C.F.F.F UNRFQJSWBQGLDR-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004439 roughness measurement Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- CQLFBEKRDQMJLZ-UHFFFAOYSA-M silver acetate Chemical compound [Ag+].CC([O-])=O CQLFBEKRDQMJLZ-UHFFFAOYSA-M 0.000 description 1
- 229940071536 silver acetate Drugs 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K13/00—Etching, surface-brightening or pickling compositions
- C09K13/04—Etching, surface-brightening or pickling compositions containing an inorganic acid
- C09K13/08—Etching, surface-brightening or pickling compositions containing an inorganic acid containing a fluorine compound
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30604—Chemical etching
Definitions
- the present invention relates to an etchant composition and a wet etching method using the same. More specifically, when etching a semiconductor substrate, it is possible to selectively etch a high impurity layer and a lower impurity layer, and an etchant composition having a high etching rate. It is about wet etching using this method.
- a metal film forming process such as sputtering, a photoresist forming process having a predetermined pattern on the metal film, and an etching process for etching using the photoresist as a contact mask are performed.
- etching processes dry etching using plasma pillars is performed. Alternatively, it may be performed by wet etching using an etching solution.
- wet etching is more advantageous in the presence of an appropriate etching solution because of the high and expensive floating etching conditions.
- Device fabrication method provides a method of manufacturing a semiconductor device using an etching solution capable of selectively and uniformly etching one of the impurity regions into which impurity ions were injected at different doses, but with a satisfactory level of uniformity. There is a problem with not having a surface.
- the present invention aims to provide an etching liquid composition and a wet etching method using the same for effectively etching semiconductor substrates.
- the present invention provides a high impurity layer and a lower impurity layer of a silicon substrate.
- the purpose of the present invention is to provide an etching liquid composition which can be selectively etched and has a faster etching rate and a wet etching method using the same.
- the present invention aims to provide an etchant composition capable of reducing the roughness of the surface of a silicon semiconductor substrate and a wet etching method using the same.
- the etching liquid composition according to the present invention is 3 to 20% by weight of hydrofluoric acid, 5 to 40% by weight of nitric acid and 10% acetic acid.
- the promoter At least one selected from the group consisting of ammonium compounds or sulfonic acid compounds.
- the ammonium compound is ammonium benzoate
- Ammonium carbonate ammonium acetate, ammonium iodide, ammonium chloride, ammonium phosphate, ammonium monophosphate, ammonium triphosphate, or any one or two or more.
- the sulfonic acid compound is para-luenesulfonic acid
- It may be any one or two or more selected from trifluoromethanesulfonic acid.
- the etching composition is a silicon semiconductor substrate
- the wet etching method according to the present invention includes 3 to 20% by weight of hydrofluoric acid, 5 to 40% by weight of nitric acid, 10 to 60% by weight of acetic acid, 2 to 20% by weight of accelerator, and a balance of water.
- the ammonium compound is ammonium benzoate
- Ammonium carbonate ammonium acetate, ammonium iodide, ammonium chloride, diammonium phosphate, ammonium monophosphate, ammonium triphosphate.
- the sulfonic acid compound is paratoluenesulfonic acid
- It may be any one or two or more selected from trifluoromethanesulfonic acid.
- the etching rate may be 1.5 to 4.5;
- the etching of the semiconductor substrate may be performed at 20 ° C. to 80 ° C. for 1 minute to 5 minutes.
- the semiconductor substrate may include a silicon substrate.
- the high impurity concentration layer can be etched from 2 to 2, and a uniform surface can be obtained.
- FIG. 1 illustrates an impurity layer having impurity concentrations used in the present invention, that is, before wet etching.
- FIG. 2 is a SEM photograph after wet etching a silicon semiconductor substrate with an etchant prepared in Example 5.
- FIG. 2 is a SEM photograph after wet etching a silicon semiconductor substrate with an etchant prepared in Example 5.
- FIG. 3 is an SEM image showing roughness after wet etching a silicon semiconductor substrate with an etchant prepared in Example 5.
- FIG. 3 is an SEM image showing roughness after wet etching a silicon semiconductor substrate with an etchant prepared in Example 5.
- the present invention relates to an etching liquid composition for etching a semiconductor substrate and a wet etching method using the semiconductor substrate, wherein the semiconductor substrate may include a silicon substrate. More specifically, it relates to an etchant composition and a wet etching method for selectively etching a high impurity concentration layer and a lower impurity layer of a silicon semiconductor substrate, and an etching composition and a wet etching method that can reduce the roughness of the surface of the silicon semiconductor substrate. It is about.
- the etchant composition of the present invention may include 3 to 20% by weight of hydrofluoric acid, 5 to 40% by weight of nitric acid, 10 to 60% by weight of acetic acid, 2 to 20% by weight of accelerator, and the balance of water.
- hydrofluoric acid serves to provide fluorine ions having strong affinity with silicon in etching silicon-based substrates, and preferably contains 3 to 20% by weight. This may be because, in the case of an outlier, it is desirable to selectively etch the concentration layer of high impurities.
- nitric acid plays a role of activating fluorine, and it may be preferable to include 5 to 40% by weight.
- the fluorine is further activated to increase the high impurity concentration of the silicon substrate.
- the layers can be selectively etched and, in addition, the roughness of the semiconductor substrate can be reduced.
- silver acetate inhibits the decomposition of nitric acid
- acetic acid in the above range increases the wetting of the semiconductor substrate and also increases the etching characteristics of the semiconductor substrate. I can keep it.
- the water may preferably be deionized water, but is not limited thereto.
- the water may preferably contain the residual amount such that the total weight of the etchant composition of the present invention is 100% by weight.
- the accelerator may contain 2 to 20% by weight, preferably 3 to 13% by weight, of any one or two or more compounds selected from ammonium compounds or sulfonic acid compounds.
- ammonium compound is ammonium benzoate
- the sulfonic acid compounds include paraluenesulfonic acid, methanesulfonic acid, dodecylbenzenesulfonic acid, sulfuric acid, sodium sulfate, potassium sulfate, sodium hydrogen sulfate, potassium hydrogen sulfate, ferric sulfate, aniline sulfate, ethanesulfonic acid and trifluoride methane. It may include any one or more selected from the sulfonic acid. Among the sulfonic acid compounds such as
- paraluenesulfonic acid methanesulfone, and dodecylbenzenesulfonic acid.
- the promoter is 2 to 20% by weight, preferably 3 to 13% by weight.
- the content of the promoter is less than 2% by weight, it may not have a fast etching rate for the high impurity concentration layer, and if it exceeds 20% by weight, there is a risk of etching the low impurity concentration layer at a high etching rate. May occur.
- the etchant composition of the present invention may be an etchant composition for etching silicon substrates.
- the wet etching method is not particularly limited, and methods such as batch (DIP) and sheetfed (SPIN) may be used if necessary.
- wet etching method hydrofluoric acid 3-20 weight ⁇ 3 ⁇ 4, nitric acid, 5 to 40% by weight, acetic acid 10-60 increase%, the accelerator 2 to 20 increment% and comprises a balance of water, wherein the accelerator is an ammonium compound or a sulfonic acid type Etching liquid composition comprising any one or more selected from the compound and the semiconductor substrate using the etching liquid composition prepared above as the etching liquid composition of the present invention 20 ⁇
- Etching at 80 o C for 1 to 5 minutes may be included.
- the etching rate is preferably 1.5 to 5.1 ⁇ / min.
- the semiconductor substrate wet etching is performed in the range of temperature and processing time, the etching rate is decreased.
- the semiconductor substrate of the wet etching method may include a silicon substrate.
- the components may react with each other to generate heat. Therefore, it may be desirable to add water, hydrofluoric acid, and nitric acid to the mixing vessel in turn to allow the mixing vessel to remain in the splitting time for complete cooling. Acetic acid and accelerators may be added to the mixing vessel to prepare. In this case, the etching composition may be mixed while cooling the mixing vessel with cooling equipment to shorten the time for preparing the etching solution.
- etching solution composition was prepared by adding and mixing 32.50% by weight of acetic acid and 2.0% by weight of paratoluenesulfonic acid.
- the prepared etchant composition was adjusted to 25 ° C., and the prepared silicon semiconductor substrate was sprayed with spin etcher for 3 minutes at a flow rate of 2 L / min and RPM 300, followed by washing with RPM 500 and 1 min with distilled water. In order to remove the distilled water remaining on the substrate, the substrate was completely dried with nitrogen RRM 500, lmin 30sec. Etch rates measured at this time are shown in Table 3.
- An etching solution composition was prepared by mixing the compositions of Table 1 in the same manner as in Example 1.
- the prepared etchant composition was adjusted to 25 ° C, and the prepared silicon semiconductor substrate was sprayed for 3 minutes at a flow rate of 2L / min and RPM 300 with a spin etcher, followed by washing with RPM 500 and lmin with distilled water. In order to remove the distilled water remaining on the substrate, the substrate was completely dried with RRM 500 and lmin 30sec. Etch rates measured at this time are shown in Table 3.
- the etching liquid composition of the semiconductor substrate was prepared by spin etcher at a flow rate of 2 L / min and RPM 300.
- An etching solution composition was prepared by mixing the composition of Table 2 in the same manner as in Preparation Example 3.
- the prepared etchant composition was adjusted to 25 ° C, and the prepared silicon semiconductor substrate was sprayed with spin etcher for 3 minutes at a flow rate of 2L / min and RPM 300 with spin etcher, and then washed with distilled water at RPM 500 and 1 min. In order to remove the distilled water remaining on the substrate, the substrate was completely dried with nitrogen RRM 500, lmin 30sec. Etch rates measured at this time are shown in Table 3.
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
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- Organic Chemistry (AREA)
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN201280065547.9A CN104039925B (zh) | 2011-12-28 | 2012-12-27 | 蚀刻溶液组合物和使用该蚀刻溶液组合物的湿蚀刻方法 |
JP2014550016A JP5847963B2 (ja) | 2011-12-28 | 2012-12-27 | エッチング液組成物およびこれを用いたウェットエッチング方法 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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KR10-2011-0144668 | 2011-12-28 | ||
KR20110144668 | 2011-12-28 | ||
KR10-2012-0154499 | 2012-12-27 | ||
KR1020120154499A KR102006323B1 (ko) | 2011-12-28 | 2012-12-27 | 식각액 조성물 및 이를 이용한 습식 식각 방법 |
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WO2013100644A1 true WO2013100644A1 (ko) | 2013-07-04 |
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PCT/KR2012/011600 WO2013100644A1 (ko) | 2011-12-28 | 2012-12-27 | 식각액 조성물 및 이를 이용한 습식 식각 방법 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111106045A (zh) * | 2019-12-31 | 2020-05-05 | 中芯集成电路(宁波)有限公司 | 半导体结构及其加工方法、刻蚀机 |
CN115537202A (zh) * | 2022-09-28 | 2022-12-30 | 重庆臻宝实业有限公司 | 一种用于硅材料微孔蚀刻的蚀刻液及蚀刻方法 |
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- 2012-12-27 WO PCT/KR2012/011600 patent/WO2013100644A1/ko active Application Filing
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