KR100906279B1 - 실리콘 웨이퍼 벌크에서의 금속 오염 분석 방법 - Google Patents
실리콘 웨이퍼 벌크에서의 금속 오염 분석 방법 Download PDFInfo
- Publication number
- KR100906279B1 KR100906279B1 KR1020070098701A KR20070098701A KR100906279B1 KR 100906279 B1 KR100906279 B1 KR 100906279B1 KR 1020070098701 A KR1020070098701 A KR 1020070098701A KR 20070098701 A KR20070098701 A KR 20070098701A KR 100906279 B1 KR100906279 B1 KR 100906279B1
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- KR
- South Korea
- Prior art keywords
- silicon wafer
- bulk
- metal contamination
- polycrystalline silicon
- hydrofluoric acid
- Prior art date
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 52
- 239000010703 silicon Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000012535 impurity Substances 0.000 title description 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 54
- 239000002184 metal Substances 0.000 claims abstract description 54
- 238000011109 contamination Methods 0.000 claims abstract description 53
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 35
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000005530 etching Methods 0.000 claims abstract description 23
- 239000000243 solution Substances 0.000 claims abstract description 16
- 238000000151 deposition Methods 0.000 claims abstract description 11
- 239000012808 vapor phase Substances 0.000 claims abstract description 5
- 239000011259 mixed solution Substances 0.000 claims abstract description 4
- 238000004458 analytical method Methods 0.000 claims description 35
- 230000008021 deposition Effects 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 6
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 claims description 6
- 239000012071 phase Substances 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- 229910017604 nitric acid Inorganic materials 0.000 claims description 5
- 238000001479 atomic absorption spectroscopy Methods 0.000 claims description 3
- 238000004518 low pressure chemical vapour deposition Methods 0.000 claims description 3
- 238000000624 total reflection X-ray fluorescence spectroscopy Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000356 contaminant Substances 0.000 abstract description 14
- 239000004065 semiconductor Substances 0.000 abstract description 6
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 210000002700 urine Anatomy 0.000 abstract 1
- 235000012431 wafers Nutrition 0.000 description 49
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 32
- 239000010949 copper Substances 0.000 description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 17
- 229910052802 copper Inorganic materials 0.000 description 17
- 229910052759 nickel Inorganic materials 0.000 description 13
- 238000001514 detection method Methods 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 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
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000010206 sensitivity analysis Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
- H01L22/10—Measuring as part of the manufacturing process
- H01L22/12—Measuring as part of the manufacturing process for structural parameters, e.g. thickness, line width, refractive index, temperature, warp, bond strength, defects, optical inspection, electrical measurement of structural dimensions, metallurgic measurement of diffusions
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
Abstract
Description
Claims (5)
- (S1) 다결정 실리콘을 실리콘 웨이퍼 표면에 증착하는 단계;(S2) 상기 증착된 다결정 실리콘층에 대해 기상 에칭에 의해 에칭하는 단계;(S3) 상기 다결정 실리콘층이 에칭된 실리콘 웨이퍼를 불산 증기 분위기하에서 2 내지 10분 동안 방치한 후, 그 표면을 과산화수소 중량 대비 1 내지 3배의 불산이 혼합된 불산과 과산화수소의 혼합용액으로 스캐닝하는 단계; 및(S4) 상기 스캐닝된 용액에 대해 금속 오염도를 분석하는 단계;를 포함하여 진행하는 것을 특징으로 하는 실리콘 웨이퍼 벌크에서의 금속 오염 분석 방법.
- 제1항에 있어서,상기 (S1)단계의 다결정 실리콘의 증착은, LPCVD법에 의해 진행하는 것을 특징으로 하는 실리콘 웨이퍼 벌크에서의 금속 오염 분석 방법.
- 제1항에 있어서,상기 (S1)단계의 다결정 실리콘의 증착은, 그 두께가 500 내지 1,000Å으로 형성되도록 진행하는 것을 특징으로 하는 실리콘 웨이퍼 벌크에서의 금속 오염 분석 방법.
- 제1항에 있어서,상기 (S2)단계의 기상 에칭은, 불산, 질산 및 과산화수소 혼합 증기를 이용하여 진행하는 것을 특징으로 하는 실리콘 웨이퍼 벌크에서의 금속 오염 분석 방법.
- 제1항 내지 제4항 중 선택된 한 항에 있어서,상기 (S4)단계의 금속 오염도 분석은, 유도결합플라즈마 질량분석기(Inductively Coupled Plasma-Mass Spectroscopy, ICP-MS), 원자흡광분광기(Atomic Absorption Spectroscopy, AAS) 및 전반사 X선 형광분광기(Total reflection X-ray Fluorescence, TXRF)로 이루어진 장치 중에서 선택된 하나의 장치를 이용하여 진행하는 것을 특징으로 하는 실리콘 웨이퍼 벌크에서의 금속 오염 분석 방법.
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KR1020070098701A KR100906279B1 (ko) | 2007-10-01 | 2007-10-01 | 실리콘 웨이퍼 벌크에서의 금속 오염 분석 방법 |
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KR1020070098701A KR100906279B1 (ko) | 2007-10-01 | 2007-10-01 | 실리콘 웨이퍼 벌크에서의 금속 오염 분석 방법 |
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KR20090033601A KR20090033601A (ko) | 2009-04-06 |
KR100906279B1 true KR100906279B1 (ko) | 2009-07-06 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101594263B1 (ko) | 2014-12-30 | 2016-02-15 | 주식회사 엘지실트론 | 표준 웨이퍼 제조 방법 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970053231A (ko) * | 1995-12-18 | 1997-07-29 | 김광호 | 폴리실리콘막의 금속오염측정방법 |
KR20040036505A (ko) * | 2002-10-23 | 2004-04-30 | 한국과학기술원 | 복합재료가 내면에 적층된 동력전달축 및 그 제조방법 |
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- 2007-10-01 KR KR1020070098701A patent/KR100906279B1/ko active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970053231A (ko) * | 1995-12-18 | 1997-07-29 | 김광호 | 폴리실리콘막의 금속오염측정방법 |
KR20040036505A (ko) * | 2002-10-23 | 2004-04-30 | 한국과학기술원 | 복합재료가 내면에 적층된 동력전달축 및 그 제조방법 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101594263B1 (ko) | 2014-12-30 | 2016-02-15 | 주식회사 엘지실트론 | 표준 웨이퍼 제조 방법 |
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