JP6802243B2 - ウエハーの欠陥領域を評価する方法 - Google Patents
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- 235000012431 wafers Nutrition 0.000 title description 74
- 230000002950 deficient Effects 0.000 title description 17
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- 230000003647 oxidation Effects 0.000 claims description 48
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- 230000007547 defect Effects 0.000 claims description 45
- 238000012423 maintenance Methods 0.000 claims description 34
- 238000009279 wet oxidation reaction Methods 0.000 claims description 23
- 239000013078 crystal Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005530 etching Methods 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 20
- 229910001882 dioxygen Inorganic materials 0.000 description 20
- 238000011109 contamination Methods 0.000 description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 14
- 239000010949 copper Substances 0.000 description 14
- 239000001301 oxygen Substances 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 12
- 229910052802 copper Inorganic materials 0.000 description 12
- 238000011156 evaluation Methods 0.000 description 12
- 239000002244 precipitate Substances 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 5
- 230000006798 recombination Effects 0.000 description 5
- 238000005215 recombination Methods 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009643 growth defect Effects 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 230000004520 agglutination Effects 0.000 description 1
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- 229910001873 dinitrogen Inorganic materials 0.000 description 1
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- 238000005247 gettering Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8803—Visual inspection
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- 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
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
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- H01L21/02554—Oxides
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- 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
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
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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
- H01L22/20—Sequence of activities consisting of a plurality of measurements, corrections, marking or sorting steps
- H01L22/24—Optical enhancement of defects or not directly visible states, e.g. selective electrolytic deposition, bubbles in liquids, light emission, colour change
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8461—Investigating impurities in semiconductor, e.g. Silicon
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8477—Investigating crystals, e.g. liquid crystals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8883—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges involving the calculation of gauges, generating models
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/9501—Semiconductor wafers
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Description
Claims (11)
- サンプルウエハーを準備する段階と、
はじめに800℃〜1000℃の温度で前記サンプルウエハーの表面に1次酸化膜を形成する段階と、
1000℃〜1100℃の温度で前記1次酸化膜上に2次酸化膜を形成する段階と、
1100℃〜1200℃の温度で前記2次酸化膜上に3次酸化膜を形成する段階と、
前記第1乃至3次酸化膜を除去する段階と、
前記第1乃至3次酸化膜が除去された前記サンプルウエハーの前記表面を食刻して前記サンプルウエハーの前記表面にヘイズを形成する段階であって、前記ヘイズはホワイト領域及びブラック領域の少なくとも1つを含む、前記段階と、
前記ホワイト領域の広さ又は幅、及び、前記ブラック領域の広さ又は幅を使用して、スコアを付与する段階と、
前記付与されたスコアに基づいて前記サンプルウエハーのVDP(Vacancy Dominant Point defect)欠陥及びIDP(Interstitial Dominant Point defect)欠陥を評価する段階と、を含む、ウエハー欠陥領域を評価する方法。 - 乾式酸化工程によって前記1次酸化膜及び前記2次酸化膜を形成し、湿式酸化工程によって前記3次酸化膜を形成する、請求項1に記載のウエハー欠陥領域を評価する方法。
- 前記2次酸化膜の厚さは前記1次酸化膜の厚さより厚く、
前記3次酸化膜の厚さは前記2次酸化膜の厚さより厚い、請求項1に記載のウエハー欠陥領域を評価する方法。 - 前記スコアを付与する段階において、前記スコアは、前記サンプルウエハーの前記表面の中心から前記ウエハーのエッジ方向へ既設定の長さの単位での所定のポイントにより、前記ホワイト領域又は前記ブラック領域に付与される、請求項1に記載のウエハー欠陥領域を評価する方法。
- サンプルウエハーを準備する段階と、
はじめに第1ターゲット温度まで温度を上昇させる第1温度上昇区間、及び前記第1ターゲット温度を維持する第1温度維持区間を含み、前記第1温度維持区間で乾式酸化工程を用いて前記サンプルウエハーの表面に第1酸化膜を形成する段階と、
前記第1ターゲット温度から第2ターゲット温度に温度を上昇させる第2温度上昇区間、及び前記第2ターゲット温度を維持する第2温度維持区間を含み、前記第2温度上昇区間及び前記第2温度維持区間で乾式酸化工程を用いて前記第1酸化膜上に第2酸化膜を形成する段階と、
前記第2ターゲット温度から第3ターゲット温度に温度を上昇させる第3温度上昇区間及び前記第3ターゲット温度を維持する第3温度維持区間を含み、前記第3温度上昇区間及び前記第3温度維持区間で湿式酸化工程を用いて前記第2酸化膜上に3次酸化膜を形成する段階と、
前記第1乃至3次酸化膜を除去する段階と、
前記第1乃至3次酸化膜が除去された前記サンプルウエハーの前記表面を食刻して前記サンプルウエハーの前記表面にヘイズを形成する段階であって、前記ヘイズはホワイト領域及びブラック領域の少なくとも1つを含む、前記段階と、
前記ホワイト領域の広さ又は幅、及び、前記ブラック領域の広さ又は幅を使用して、スコアを付与する段階と、
前記付与されたスコアに基づいて前記サンプルウエハーのVDP(Vacancy Dominant Point defect)欠陥及びIDP(Interstitial Dominant Point defect)欠陥を評価する段階と、を含み、
前記第1ターゲット温度は850℃〜900℃であり、前記第2ターゲット温度は950℃〜1050℃であり、前記第3ターゲット温度は1100℃〜1200℃である、ウエハー欠陥領域を評価する方法。 - 前記スコアを付与する段階において、前記スコアは、前記サンプルウエハーの前記表面の中心から前記ウエハーのエッジ方向へ既設定の長さの単位での所定のポイントにより、前記ホワイト領域又は前記ブラック領域に付与される、請求項5に記載のウエハー欠陥領域を評価する方法。
- 前記第2酸化膜の厚さは前記第1酸化膜の厚さより厚く、
前記3次酸化膜の厚さは前記第2酸化膜より厚い、請求項5に記載のウエハー欠陥領域を評価する方法。 - 前記第2温度上昇区間の温度上昇の傾き及び前記第3温度上昇区間の温度上昇の傾きのそれぞれは4[℃/min]〜6[℃/min]である、請求項5に記載のウエハー欠陥領域を評価する方法。
- 前記サンプルウエハーは、半導体用ウエハーの表面に対してラッピング工程、グラインディング工程、エッチング工程及びポリシング工程のうちの少なくとも一つを実行することによって得られ、
前記半導体用ウエハーは単結晶インゴットに対してスライシング工程を実行することによって得られる、請求項5に記載のウエハー欠陥領域を評価する方法。 - 前記3次酸化膜を形成する段階と前記第1乃至3次酸化膜除去段階の間に、前記第3ターゲット温度から第4ターゲット温度まで温度を減少させる冷却工程をさらに含む、請求項5に記載のウエハー欠陥領域を評価する方法。
- 前記第4ターゲット温度は750℃〜850℃であり、前記冷却工程での温度下降の傾きは3[℃/min]〜10[℃/min]である、請求項10に記載のウエハー欠陥領域を評価する方法。
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KR102527444B1 (ko) * | 2021-01-28 | 2023-05-02 | 에스케이실트론 주식회사 | 웨이퍼 또는 단결정 잉곳의 품질평가 방법 및 장치 |
CN116959961A (zh) * | 2023-08-22 | 2023-10-27 | 中环领先半导体材料有限公司 | 一种晶圆及其制备方法 |
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JP2007194422A (ja) * | 2006-01-19 | 2007-08-02 | Hitachi High-Technologies Corp | 欠陥検査装置用テストパターンウエハ、その製造方法及びそれを用いた欠陥検査装置の評価方法 |
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US10082470B2 (en) * | 2016-09-27 | 2018-09-25 | Kla-Tencor Corporation | Defect marking for semiconductor wafer inspection |
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