KR101007244B1 - 박막 트랜지스터 제조방법 - Google Patents
박막 트랜지스터 제조방법 Download PDFInfo
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- KR101007244B1 KR101007244B1 KR1020080033105A KR20080033105A KR101007244B1 KR 101007244 B1 KR101007244 B1 KR 101007244B1 KR 1020080033105 A KR1020080033105 A KR 1020080033105A KR 20080033105 A KR20080033105 A KR 20080033105A KR 101007244 B1 KR101007244 B1 KR 101007244B1
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- Prior art keywords
- thin film
- silicon thin
- passivation
- polycrystalline silicon
- temperature
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- 239000010409 thin film Substances 0.000 title claims abstract description 253
- 238000000034 method Methods 0.000 title claims abstract description 91
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 119
- 238000002161 passivation Methods 0.000 claims abstract description 102
- 239000010408 film Substances 0.000 claims abstract description 95
- 238000010438 heat treatment Methods 0.000 claims abstract description 91
- 229910052751 metal Inorganic materials 0.000 claims abstract description 64
- 239000002184 metal Substances 0.000 claims abstract description 64
- 229910021417 amorphous silicon Inorganic materials 0.000 claims abstract description 59
- 238000002425 crystallisation Methods 0.000 claims abstract description 45
- 239000003054 catalyst Substances 0.000 claims abstract description 28
- 239000010410 layer Substances 0.000 claims description 56
- 230000008025 crystallization Effects 0.000 claims description 41
- 239000000758 substrate Substances 0.000 claims description 41
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 31
- 229910052710 silicon Inorganic materials 0.000 claims description 31
- 239000010703 silicon Substances 0.000 claims description 31
- 239000001257 hydrogen Substances 0.000 claims description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims description 16
- 239000012535 impurity Substances 0.000 claims description 13
- 239000011229 interlayer Substances 0.000 claims description 12
- 238000005530 etching Methods 0.000 claims description 6
- 238000003786 synthesis reaction Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000000059 patterning Methods 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 229910021332 silicide Inorganic materials 0.000 abstract description 31
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 abstract description 31
- 230000006698 induction Effects 0.000 abstract description 9
- 238000009826 distribution Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 38
- 230000000052 comparative effect Effects 0.000 description 27
- 230000003647 oxidation Effects 0.000 description 18
- 238000007254 oxidation reaction Methods 0.000 description 18
- 238000001816 cooling Methods 0.000 description 17
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 13
- 238000011156 evaluation Methods 0.000 description 13
- 230000007547 defect Effects 0.000 description 9
- 238000001000 micrograph Methods 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000000593 degrading effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000011068 loading method Methods 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- 229910005881 NiSi 2 Inorganic materials 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- UBSJOWMHLJZVDJ-UHFFFAOYSA-N aluminum neodymium Chemical compound [Al].[Nd] UBSJOWMHLJZVDJ-UHFFFAOYSA-N 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 2
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 1
- 229920001621 AMOLED Polymers 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910012990 NiSi2 Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 101100143815 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) RPL3 gene Proteins 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- 229910004205 SiNX Inorganic materials 0.000 description 1
- 238000001994 activation Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000005527 interface trap Effects 0.000 description 1
- 238000005499 laser crystallization Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003949 trap density measurement Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66742—Thin film unipolar transistors
- H01L29/6675—Amorphous silicon or polysilicon transistors
- H01L29/66757—Lateral single gate single channel transistors with non-inverted structure, i.e. the channel layer is formed before the gate
-
- 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
- H01L21/02656—Special treatments
- H01L21/02664—Aftertreatments
- H01L21/02667—Crystallisation or recrystallisation of non-monocrystalline semiconductor materials, e.g. regrowth
- H01L21/02672—Crystallisation or recrystallisation of non-monocrystalline semiconductor materials, e.g. regrowth using crystallisation enhancing elements
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42384—Gate electrodes for field effect devices for field-effect transistors with insulated gate for thin film field effect transistors, e.g. characterised by the thickness or the shape of the insulator or the dimensions, the shape or the lay-out of the conductor
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thin Film Transistor (AREA)
- Recrystallisation Techniques (AREA)
Abstract
Description
TCM1 | TCM2 | TCM3 | PM | TCM4 | TCM5 | TCM6 | ||||||||
온도 | 증기 | 온도 | 증기 | 온도 | 증기 | 온도 | 증기 | 온도 | 증기 | 온도 | 증기 | 온도 | 증기 | |
실시예 | 700 | X | 700 | X | 750 | O | 850 | O | 750 | O | 600 | O | 450 | O |
비교예1 | 700 | X | 700 | X | 750 | X | 850 | X | 750 | X | 600 | X | 450 | X |
비교예2 | 670 | X | 700 | X | 700 | O | 800 | O | 700 | X | 550 | X | 400 | X |
Claims (10)
- 절연기판의 상부에 비정질 실리콘 박막을 형성하는 비정질 실리콘 박막 형성단계;상기 비정질 실리콘 박막을 다결정 실리콘 박막으로 결정화하는 실리콘 박막결정화단계;상기 다결정 실리콘 박막의 표면에 O2 또는 H20 증기를 공급하여 상기 다결정 실리콘 박막을 산화시켜 패시베이션막을 형성하는 제1패시베이션 단계;상기 다결정 실리콘 박막과 상기 패시베이션막을 패터닝하여 상기 다결정 실리콘 박막을 활성층으로 형성하는 활성층 형성단계;상기 다결정 실리콘 박막과 상기 패시베이션막의 상부에 게이트 절연막을 형성하는 게이트 절연막 형성단계;상기 게이트 절연막의 상부에 게이트 전극을 형성하며, 상기 게이트 전극에 대응되는 영역인 채널영역을 중심으로 상기 다결정 실리콘 박막을 제1영역과 제2영역으로 구분하는 게이트 전극 형성단계;상기 제1영역과 제2영역에 p형 또는 n형 불순물을 주입하여 소스 영역/드레인 영역을 형성하는 소스 및 드레인 영역 형성단계;상기 게이트 전극과 상기 게이트 절연막을 포함하는 영역에 층간 절연막을 형성하는 층간 절연막 형성단계;상기 층간 절연막과 게이트 절연막 및 상기 패시베이션막을 식각하여 상기 소스 영역과 드레인 영역으로 연결되는 제1콘택홀 및 제2콘택홀을 형성하는 콘택홀 형성단계; 및상기 제1콘택홀과 제2콘택홀을 통하여 소스 영역과 드레인 영역에 각각 접촉하는 소스 전극과 드레인 전극을 형성하는 소스 및 드레인 전극 형성단계를 포함하며,상기 실리콘 박막 결정화 단계는 상기 비정질 실리콘 박막에 금속 촉매가 도핑되고, 열처리 온도가 600 ∼850℃의 범위이며, 열처리 시간이 5 ∼150분의 범위에서 이루어지며,상기 실리콘 박막 결정화 단계는 열처리 온도가 높을수록 열처리 시간이 짧은 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 제 1 항에 있어서,상기 절연기판의 상면과 상기 비정질 실리콘 박막 사이에 버퍼층을 형성하는 버퍼층 형성단계를 더 포함하여 이루어지는 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 삭제
- 제 1 항에 있어서,상기 실리콘 박막 결정화 단계는 금속 촉매의 도핑 농도가 1011 ∼1016개/㎠ 인 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 제 1 항에 있어서,상기 제1패시베이션 단계는 700도 내지 800도의 온도에서 진행되는 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 제 1 항에 있어서,상기 H2O 증기는 수소(H2)와 산소(O2)를 700 ∼ 900℃의 온도에서 수증기 합성 반응(pyrotorch 방식)에 의하여 공급되거나, 탈이온수를 20℃이상의 온도로 가열하여 가열 방식에 의하여 공급되는 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 제 1 항에 있어서,상기 제1패시베이션 단계는 상기 패시베이션막이 단일 원자층에서 수백Å이상의 두께로 형성되는 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 제 1 항에 있어서,상기 콘택홀 형성단계 후에상기 소스 영역과 드레인 영역의 상면에 O2 또는 H20 증기를 공급하여 상기 활성층을 패시베이션시키는 제2패시베이션 단계를 더 포함하여 이루어지는 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 제 8 항에 있어서,상기 제2패시베이션 단계는 200℃ 내지 600℃의 온도에서 실시되는 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 제 8 항에 있어서,상기 제1패시베이션 단계와 제2패시베이션 단계는 다수의 독립 챔버로 구성된 인라인 시스템 또는 하나의 단독 챔버가 수직으로 형성되는 수직관상로에서 실시되는 것을 특징으로 하는 박막 트랜지스터 제조방법.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080033105A KR101007244B1 (ko) | 2008-04-10 | 2008-04-10 | 박막 트랜지스터 제조방법 |
US12/341,488 US7932138B2 (en) | 2007-12-28 | 2008-12-22 | Method for manufacturing thin film transistor |
TW097150339A TWI414026B (zh) | 2007-12-28 | 2008-12-23 | 製造薄膜電晶體之方法 |
JP2008334877A JP5129730B2 (ja) | 2007-12-28 | 2008-12-26 | 薄膜トランジスタの製造方法 |
CN2008101891351A CN101471265B (zh) | 2007-12-28 | 2008-12-29 | 制造薄膜晶体管的方法 |
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