KR100838454B1 - 실리콘 웨이퍼의 전처리 방법 및 이를 이용한 점결함 농도평가 방법 - Google Patents
실리콘 웨이퍼의 전처리 방법 및 이를 이용한 점결함 농도평가 방법 Download PDFInfo
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- KR100838454B1 KR100838454B1 KR1020060133670A KR20060133670A KR100838454B1 KR 100838454 B1 KR100838454 B1 KR 100838454B1 KR 1020060133670 A KR1020060133670 A KR 1020060133670A KR 20060133670 A KR20060133670 A KR 20060133670A KR 100838454 B1 KR100838454 B1 KR 100838454B1
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- silicon wafer
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 85
- 239000010703 silicon Substances 0.000 title claims abstract description 85
- 230000007547 defect Effects 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 54
- 229910052751 metal Inorganic materials 0.000 claims abstract description 54
- 239000002184 metal Substances 0.000 claims abstract description 53
- 238000005530 etching Methods 0.000 claims abstract description 17
- 238000000151 deposition Methods 0.000 claims abstract description 6
- 238000001773 deep-level transient spectroscopy Methods 0.000 claims description 30
- 239000010409 thin film Substances 0.000 claims description 30
- 238000005259 measurement Methods 0.000 claims description 29
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 23
- 238000011156 evaluation Methods 0.000 claims description 15
- 229910052697 platinum Inorganic materials 0.000 claims description 11
- 238000004544 sputter deposition Methods 0.000 claims description 9
- 239000012808 vapor phase Substances 0.000 claims description 8
- 239000010931 gold Substances 0.000 claims description 5
- 239000000523 sample Substances 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 238000002203 pretreatment Methods 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 102100031920 Dihydrolipoyllysine-residue succinyltransferase component of 2-oxoglutarate dehydrogenase complex, mitochondrial Human genes 0.000 claims 2
- 101000992065 Homo sapiens Dihydrolipoyllysine-residue succinyltransferase component of 2-oxoglutarate dehydrogenase complex, mitochondrial Proteins 0.000 claims 2
- 238000007781 pre-processing Methods 0.000 claims 1
- 229910052755 nonmetal Inorganic materials 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract 1
- 235000012431 wafers Nutrition 0.000 description 76
- 238000011109 contamination Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 7
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
- H01L22/14—Measuring as part of the manufacturing process for electrical parameters, e.g. resistance, deep-levels, CV, diffusions by electrical means
-
- 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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/2855—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by physical means, e.g. sputtering, evaporation
-
- 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
- H01L21/308—Chemical or electrical treatment, e.g. electrolytic etching using masks
-
- 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
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
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- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (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 (11)
- (a) 실리콘 웨이퍼의 표면에 금속 박막을 증착하는 단계;(b) 저온 열처리를 통해 금속 박막의 금속 원자를 실리콘 웨이퍼의 내부로 확산시켜 실리콘 웨이퍼 내부의 점결함을 금속으로 오염시키는 단계;(c) 실리콘 웨이퍼의 표면에 존재하는 금속 박막을 제거하는 단계;(d) 기상에칭법에 의해 실리콘 웨이퍼를 식각하여 점결함 농도 평가 지점까지 개구를 형성하는 단계; 및(e) 개구 저면에 쇼트키 콘택을 형성하고 실리콘 웨이퍼의 배면에 오믹 콘택층을 형성하는 단계;를 포함하는 것을 특징으로 하는 점결함 농도 평가를 위한 실리콘 웨이퍼의 전처리 방법.
- 제1항에 있어서,상기 저온 열처리는 480 ~ 600℃의 온도에서 5분 ~ 1시간 동안 수행되는 것을 특징으로 하는 점결함 농도 평가를 위한 실리콘 웨이퍼의 전처리 방법.
- 제2항에 있어서,상기 저온 열처리는 복사열을 이용한 가열로(furnace)를 이용하여 수행되는 것을 특징으로 하는 점결함 농도 평가를 위한 실리콘 웨이퍼의 전처리 방법.
- 제1항에 있어서,상기 쇼트키 콘택은 Ti을 금속 타겟으로 한 스퍼터링 방식에 의해 형성하는 것을 특징으로 하는 점결함 농도 평가를 위한 실리콘 웨이퍼의 전처리 방법.
- 제1항에 있어서, 상기 (d) 단계는,(d1) 개구가 형성될 지점만을 선택적으로 노출시키는 식각 마스크를 실리콘 웨이퍼의 상부에 형성하는 단계;(d2) 상기 식각 마스크에 의해 노출된 지점을 기상 에천트에 노출시켜 점결함 농도가 평가될 지점까지 웨이퍼를 식각하여 개구를 형성하는 단계; 및(d3) 상기 식각 마스크를 제거하는 단계;를 포함하는 것을 특징으로 하는 점결함 농도 평가를 위한 실리콘 웨이퍼의 전처리 방법.
- 제5항에 있어서,상기 개구는 적어도 2개 이상의 점결함 평가 지점에 형성되고,상기 (d1) 내지 (d3) 단계를 반복적으로 수행하여 각 개구를 형성하는 것을 특징으로 하는 점결함 농도 평가를 위한 실리콘 웨이퍼의 전처리 방법.
- 제6항에 있어서,상기 쇼트키 콘택은 각각의 개구 저면에 개별적으로 형성되는 것을 특징으로 하는 점결함 농도 평가를 위한 실리콘 웨이퍼의 전처리 방법.
- 제1항에 있어서,상기 금속 박막은 백금 박막 또는 금 박막인 것을 특징으로 하는 점결함 농도 평가를 위한 실리콘 웨이퍼의 전처리 방법.
- 제1항에 있어서,상기 금속 박막은 100 ~ 10000Å의 두께로 형성하는 것을 특징으로 하는 점결함 농도 평가를 위한 실리콘 웨이퍼의 전처리 방법.
- 제1항에 있어서,상기 금속 박막은 스퍼터링법 또는 증발법에 의해 형성하는 것을 특징으로 하는 점결함 농도 평가를 위한 실리콘 웨이퍼의 전처리 방법.
- 제1항 내지 제10항 중 어느 한 항에 따른 방법을 이용한 실리콘 웨이퍼의 점결함 농도 평가 방법에 있어서,오믹 콘택층을 DLTS 장비의 접지 전극에 접속하는 단계; 및상기 쇼트키 콘택에 탐침을 접속하여 DLTS 측정을 시행하는 단계;를 더 포함하는 것을 특징으로 하는 실리콘 웨이퍼의 점결함 농도 평가 방법.
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KR1020060133670A KR100838454B1 (ko) | 2006-12-26 | 2006-12-26 | 실리콘 웨이퍼의 전처리 방법 및 이를 이용한 점결함 농도평가 방법 |
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KR1020060133670A KR100838454B1 (ko) | 2006-12-26 | 2006-12-26 | 실리콘 웨이퍼의 전처리 방법 및 이를 이용한 점결함 농도평가 방법 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20210152877A (ko) * | 2020-06-09 | 2021-12-16 | 광운대학교 산학협력단 | 반도체 기판 및 그 처리 방법과, 반도체 기판의 점결함 평가 방법 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001050874A (ja) | 1999-08-04 | 2001-02-23 | Mitsubishi Electric Corp | 半導体基板の検査方法 |
KR20040045986A (ko) * | 2002-11-26 | 2004-06-05 | 주식회사 실트론 | 실리콘 웨이퍼 또는 실리콘 단결정 잉곳의 결함 영역 구분방법 |
KR20050012500A (ko) * | 2003-07-25 | 2005-02-02 | 주식회사 실트론 | 실리콘웨이퍼의 결함 검출방법 |
KR20050054643A (ko) * | 2003-12-05 | 2005-06-10 | 주식회사 실트론 | 단결정 실리콘 웨이퍼의 결함 평가방법 |
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- 2006-12-26 KR KR1020060133670A patent/KR100838454B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001050874A (ja) | 1999-08-04 | 2001-02-23 | Mitsubishi Electric Corp | 半導体基板の検査方法 |
KR20040045986A (ko) * | 2002-11-26 | 2004-06-05 | 주식회사 실트론 | 실리콘 웨이퍼 또는 실리콘 단결정 잉곳의 결함 영역 구분방법 |
KR20050012500A (ko) * | 2003-07-25 | 2005-02-02 | 주식회사 실트론 | 실리콘웨이퍼의 결함 검출방법 |
KR20050054643A (ko) * | 2003-12-05 | 2005-06-10 | 주식회사 실트론 | 단결정 실리콘 웨이퍼의 결함 평가방법 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20210152877A (ko) * | 2020-06-09 | 2021-12-16 | 광운대학교 산학협력단 | 반도체 기판 및 그 처리 방법과, 반도체 기판의 점결함 평가 방법 |
KR102348438B1 (ko) * | 2020-06-09 | 2022-01-10 | 광운대학교 산학협력단 | 반도체 기판 및 그 처리 방법과, 반도체 기판의 점결함 평가 방법 |
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