KR20170092716A - 성막 방법 - Google Patents
성막 방법 Download PDFInfo
- Publication number
- KR20170092716A KR20170092716A KR1020177021641A KR20177021641A KR20170092716A KR 20170092716 A KR20170092716 A KR 20170092716A KR 1020177021641 A KR1020177021641 A KR 1020177021641A KR 20177021641 A KR20177021641 A KR 20177021641A KR 20170092716 A KR20170092716 A KR 20170092716A
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- South Korea
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- film
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- thin film
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- 229910052725 zinc Inorganic materials 0.000 claims description 25
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 24
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
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- 229910018068 Li 2 O Inorganic materials 0.000 description 1
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- -1 Ta 2 O 5 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
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- 229910052788 barium Inorganic materials 0.000 description 1
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- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
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- 229910052735 hafnium Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
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- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 238000003852 thin film production method Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/02631—Physical deposition at reduced pressure, e.g. MBE, sputtering, evaporation
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
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- C23C14/0036—Reactive sputtering
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02266—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by physical ablation of a target, e.g. sputtering, reactive sputtering, physical vapour deposition or pulsed laser deposition
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- 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
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- H01L21/28026—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
- H01L21/28035—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities
- H01L21/28044—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities the conductor comprising at least another non-silicon conductive layer
- H01L21/28061—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities the conductor comprising at least another non-silicon conductive layer the conductor comprising a metal or metal silicide formed by deposition, e.g. sputter deposition, i.e. without a silicidation reaction
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- 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
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- 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
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- 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
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- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76822—Modification of the material of dielectric layers, e.g. grading, after-treatment to improve the stability of the layers, to increase their density etc.
- H01L21/76825—Modification of the material of dielectric layers, e.g. grading, after-treatment to improve the stability of the layers, to increase their density etc. by exposing the layer to particle radiation, e.g. ion implantation, irradiation with UV light or electrons etc.
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- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/674—Thin-film transistors [TFT] characterised by the active materials
- H10D30/6755—Oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate
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Abstract
Description
도 2는 본 발명의 산화물 반도체를 구비하여 이루어지는 박막 트랜지스터의 일 실시 형태를 나타내는 개략 단면도이다.
도 3은 본 발명의 산화물 반도체를 구비하여 이루어지는 박막 트랜지스터의 다른 실시 형태에 따른 개략 단면도이다.
도 4는 산소 농도 또는 수소 농도로 얻어지는 박막의 캐리어 농도의 관계를 나타내는 도면이다.
Claims (15)
- 희가스 원자 및 물 분자를 포함하고, 상기 물 분자의 함유량이 상기 희가스 원자에 대하여 분압비로 0.1 내지 10%인 기체의 분위기 하에서, 금속 산화물로 이루어지는 타겟을 직류 파워 밀도 1 내지 10W/cm2로 스퍼터링하여, 기판 상에 박막을 성막하는 성막 방법.
- 제 1 항에 있어서,
직류 파워 밀도가 1 내지 5W/cm2인 성막 방법. - 희가스 원자 및 물 분자를 포함하고, 상기 물 분자의 함유량이 상기 희가스 원자에 대하여 분압비로 0.1 내지 10%인 기체의 분위기 하에서, 금속 산화물로 이루어지는 타겟을 교류 파워 밀도 3 내지 20W/cm2로 스퍼터링하여, 기판 상에 박막을 성막하는 성막 방법.
- 제 3 항에 있어서,
교류 파워 밀도가 5 내지 20W/cm2인 성막 방법. - 제 3 항 또는 제 4 항에 있어서,
진공 챔버 내에 소정의 간격을 두고 병설된 3장 이상의 타겟에 대향하는 위치에, 기판을 순차적으로 반송하고,
상기 각 타겟에 교류 전원으로부터 음전위 및 양전위를 교대로 인가하여 상기 타겟 상에 플라즈마를 발생시켜 상기 기판 표면 상에 박막을 성막하는 성막 방법으로서,
상기 성막은, 상기 교류 전원으로부터의 출력의 적어도 하나를, 분기시켜 접속한 2장 이상의 타겟 사이에서, 상기 타겟에 인가하는 전위의 전환을 행하면서 행하는 성막 방법. - 제 5 항에 있어서,
상기 교류 전원의 주파수가 10kHz 내지 1MHz인 성막 방법. - 제 1 항 또는 제 3 항에 있어서,
상기 기체의 압력이 0.1 내지 5.0Pa인 성막 방법. - 제 1 항 또는 제 3 항에 있어서,
기판의 성막면에 대하여 수직 방향의 성막 속도가 1 내지 100nm/min인 성막 방법. - 제 1 항 또는 제 3 항에 있어서,
상기 타겟과 기판 사이의 거리가, 기판의 성막면에 대하여 수직 방향으로 1 내지 15cm인 성막 방법. - 제 1 항 또는 제 3 항에 있어서,
상기 분위기의 자장 강도가 300 내지 1000가우스인 성막 방법. - 제 1 항 또는 제 3 항에 있어서,
상기 금속 산화물이 갈륨 원소(Ga), 아연 원소(Zn) 및 주석 원소(Sn)로 이루어지는 군으로부터 선택되는 1 이상의 원소, 및 인듐 원소(In)를 함유하고,
타겟 중의 인듐 원소의 함유량이 하기 원자비를 만족시키는 성막 방법.
0.2 ≤ [In]/전체 금속 원자 ≤ 0.8
(상기 수학식 중, [In]은 타겟 중의 인듐 원소의 원자수이다.
전체 금속 원자란, 타겟에 포함되는 모든 금속 원자의 원자수이다.) - 제 1 항 또는 제 3 항에 있어서,
상기 금속 산화물이 인듐 원소(In), 갈륨 원소(Ga) 및 아연 원소(Zn)를 함유하고,
타겟 중의 인듐 원소, 갈륨 원소 및 아연 원소의 함유량이 하기 원자비를 만족시키는 성막 방법.
0 < [In]/[Ga] < 0.5
0.2 < [In]/([In]+[Ga]+[Zn]) < 0.9
(상기 수학식 중, [In]은 타겟 중의 인듐 원소의 원자수이고, [Ga]는 타겟 중의 갈륨 원소의 원자수이며, [Zn]은 타겟 중의 아연 원소의 원자수이다.) - 제 1 항 또는 제 3 항에 있어서,
상기 금속 산화물이 인듐 원소(In), 주석 원소(Sn) 및 아연 원소(Zn)를 함유하고,
타겟 중의 인듐 원소, 주석 원소 및 아연 원소의 함유량이 하기 원자비를 만족시키는 성막 방법.
0.2 < [In]/([In]+[Sn]+[Zn]) < 0.9
0 < [Sn]/([In]+[Sn]+[Zn]) < 0.5
(상기 수학식 중, [In]은 타겟 중의 인듐 원소의 원자수이고, [Sn]은 타겟 중의 주석 원소의 원자수이며, [Zn]은 타겟 중의 아연 원소의 원자수이다.) - 제 1 항 또는 제 3 항에 기재된 성막 방법에 의해 얻어지는 박막을 150 내지 400℃에서 5 내지 120분간 어닐링 처리하는 산화물 반도체 박막의 제조 방법.
- 제 14 항에 있어서,
상기 어닐링 처리를, 적어도 산소를 함유하는 분위기 하에서 행하는 산화물 반도체 박막의 제조 방법.
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