KR20070113402A - 다결정 실리콘 박막 형성방법 - Google Patents
다결정 실리콘 박막 형성방법 Download PDFInfo
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- KR20070113402A KR20070113402A KR1020060046204A KR20060046204A KR20070113402A KR 20070113402 A KR20070113402 A KR 20070113402A KR 1020060046204 A KR1020060046204 A KR 1020060046204A KR 20060046204 A KR20060046204 A KR 20060046204A KR 20070113402 A KR20070113402 A KR 20070113402A
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- thin film
- polycrystalline silicon
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- 239000010409 thin film Substances 0.000 title claims abstract description 108
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 12
- 239000010703 silicon Substances 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims description 115
- 238000004519 manufacturing process Methods 0.000 title description 2
- 229910052751 metal Inorganic materials 0.000 claims abstract description 91
- 239000002184 metal Substances 0.000 claims abstract description 91
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 74
- 229910021417 amorphous silicon Inorganic materials 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 239000010408 film Substances 0.000 claims description 72
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 25
- 238000000151 deposition Methods 0.000 claims description 23
- 238000002425 crystallisation Methods 0.000 claims description 22
- 230000008025 crystallization Effects 0.000 claims description 17
- 238000005229 chemical vapour deposition Methods 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 238000004544 sputter deposition Methods 0.000 claims description 14
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 11
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 10
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 10
- 238000005530 etching Methods 0.000 claims description 9
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 8
- 238000004528 spin coating Methods 0.000 claims description 8
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 claims description 7
- 238000000197 pyrolysis Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 229910052736 halogen Inorganic materials 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 2
- 238000005468 ion implantation Methods 0.000 claims description 2
- 238000007639 printing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 27
- 238000011109 contamination Methods 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000002161 passivation Methods 0.000 description 9
- 150000004767 nitrides Chemical class 0.000 description 8
- 239000012071 phase Substances 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000000059 patterning Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000008021 deposition Effects 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000001552 radio frequency sputter deposition Methods 0.000 description 4
- 239000008096 xylene Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 239000010949 copper Substances 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 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
- 239000000411 inducer Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000879 optical micrograph Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
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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
- H01L21/02656—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
- H01L21/322—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to modify their internal properties, e.g. to produce internal imperfections
- H01L21/3221—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to modify their internal properties, e.g. to produce internal imperfections of silicon bodies, e.g. for gettering
- H01L21/3226—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to modify their internal properties, e.g. to produce internal imperfections of silicon bodies, e.g. for gettering of silicon on insulator
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1259—Multistep manufacturing methods
- H01L27/127—Multistep manufacturing methods with a particular formation, treatment or patterning of the active layer specially adapted to the circuit arrangement
- H01L27/1274—Multistep manufacturing methods with a particular formation, treatment or patterning of the active layer specially adapted to the circuit arrangement using crystallisation of amorphous semiconductor or recrystallisation of crystalline semiconductor
- H01L27/1277—Multistep manufacturing methods with a particular formation, treatment or patterning of the active layer specially adapted to the circuit arrangement using crystallisation of amorphous semiconductor or recrystallisation of crystalline semiconductor using a crystallisation promoting species, e.g. local introduction of Ni catalyst
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Recrystallisation Techniques (AREA)
Abstract
Description
Claims (20)
- 다결정 실리콘 박막 형성방법에 있어서,절연 기판 상에 비정질 실리콘층을 증착하는 단계;상기 비정질 실리콘층 상에 제1 덮개층을 형성하는 단계;상기 제1 덮개층 상에 금속을 형성하는 단계;상기 비정질 실리콘층을 열처리에 의하여 결정화함으로써, 다결정 실리콘 박막을 형성하는 단계;상기 제1 덮개층과 금속을 제거하고, 상기 다결정 실리콘 박막 상에 제2 덮개층을 형성시킨 후, 열처리를 수행함으로써 상기 다결정 실리콘 박막에 포함된 잔존하는 금속을 제거하는 단계를 포함하여 이루어진 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 1에 있어서,상기 절연 기판 상에 비정질 실리콘층을 증착하는 단계 이전에 상기 절연 기판 상에 완충층을 증착하는 단계를 더 포함하는 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 2에 있어서,상기 완충층은 실리콘산화막, 실리콘질화막, 실리콘산화질화막, 실리케이트막 및 유기막 중 적어도 하나가 적층되어 형성되는 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 1 또는 청구항 2에 있어서,상기 절연 기판은 유리, 석영, 산화막이 덮여진 단결정 웨이퍼 및 절연막이 덮여진 유연성을 갖는 금속 기판 중 어느 하나인 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 4에 있어서,상기 절연막은 실리콘산화막, 실리콘질화막, 실리콘산화질화막, 실리케이트막 및 유기막 중 적어도 하나가 적층되어 형성되는 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 1 또는 청구항 2에 있어서,상기 비정질 실리콘층은 스퍼터링법, 화학기상증착법, 열분해법 중 어느 하 나의 방법으로 증착되는 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 1 또는 청구항 2에 있어서,상기 제1 덮개층 및 제2 덮개층은 화학기상증착법, 열분해를 이용한 증착법, 프린터코팅법 및 스핀코팅 중 어느 하나의 방법에 의하여 형성되는 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 7에 있어서,상기 제1 덮개층 및 제2 덮개층은 실리콘산화막, 실리콘질화막, 실리콘산화질화막, 실리케이트막 및 유기막 중 적어도 하나가 적층되어 형성되는 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 8에 있어서,상기 제1 및 제2 덮개층의 두께는 0.1㎚에서 1000㎚ 사이의 범위인 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 1 또는 청구항 2에 있어서,상기 금속은 이온주입, PECVD, 스퍼터, 스핀코팅, 프린팅, 담금 방법 중 어느 하나의 방법으로 형성되는 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 10에 있어서,상기 금속은 니켈(Ni)인 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 10에 있어서,상기 금속의 면밀도는 1012 ~ 1018㎝-2 사이의 범위인 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 1 또는 청구항 2에 있어서,상기 열처리는 200℃ ~ 1400℃ 사이의 온도에서 이루어지는 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 13에 있어서,상기 열처리는 할로겐램프, 자오선램프 및 퍼니스 중 어느 하나를 이용하여 이루어지는 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 1 또는 청구항 2에 있어서,상기 제1 덮개층과 금속의 제거는 에칭(etching) 공정에 의하여 이루어지는 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 1 또는 청구항 2에 있어서,상기 다결정 실리콘 박막에 포함된 금속의 평균 함유량은 1018 ~ 1021㎝-3 사이의 범위인 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 1 또는 청구항 2에 있어서,상기 다결정 실리콘 박막의 다결정 구조는 디스크 형상으로 성장되어, 다각형 구조의 그레인으로 이루어지는 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 17에 있어서,상기 다결정 실리콘 박막의 두께는 15㎚ ~ 150㎚ 사이의 범위인 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 청구항 17에 있어서,상기 다결정 실리콘 박막의 그레인 및 그레인 경계면에는 금속 덩어리가 잔존하지 않는 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
- 절연기판 상에 비정질 실리콘을 형성하고, 상기 비정질 실리콘 상부에 니켈을 형성하여 금속 유도 결정화를 수행함으로써, 다결정 실리콘 박막을 형성하는 공정, 상기 결정화된 다결정 실리콘 박막의 그레인 경계면에 잔존하는 니켈을 제거하는 공정을 포함하여 이루어진 것을 특징으로 하는 다결정 실리콘 박막 형성방법.
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Cited By (2)
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KR100859761B1 (ko) * | 2006-10-23 | 2008-09-24 | 실리콘 디스플레이 (주) | 다결정 실리콘 박막 및 그 제조방법 |
KR101123373B1 (ko) * | 2010-10-26 | 2012-03-23 | 노코드 주식회사 | 다결정 실리콘 박막의 제조방법 |
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KR101123373B1 (ko) * | 2010-10-26 | 2012-03-23 | 노코드 주식회사 | 다결정 실리콘 박막의 제조방법 |
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