JP5647900B2 - 溶液処理型高移動度無機薄膜トランジスタ - Google Patents
溶液処理型高移動度無機薄膜トランジスタ Download PDFInfo
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- JP5647900B2 JP5647900B2 JP2010545028A JP2010545028A JP5647900B2 JP 5647900 B2 JP5647900 B2 JP 5647900B2 JP 2010545028 A JP2010545028 A JP 2010545028A JP 2010545028 A JP2010545028 A JP 2010545028A JP 5647900 B2 JP5647900 B2 JP 5647900B2
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- 238000005169 Debye-Scherrer Methods 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 239000004471 Glycine Substances 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- 229910004140 HfO Inorganic materials 0.000 description 1
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 description 1
- 239000002879 Lewis base Substances 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 1
- 229920000144 PEDOT:PSS Polymers 0.000 description 1
- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Natural products C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 description 1
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910007604 Zn—Sn—O Inorganic materials 0.000 description 1
- BHXAPLXJQBVXGT-UHFFFAOYSA-N [Sb]=O.[In].[Cd] Chemical compound [Sb]=O.[In].[Cd] BHXAPLXJQBVXGT-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 235000004279 alanine Nutrition 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 230000001588 bifunctional effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- GHWVXCQZPNWFRO-UHFFFAOYSA-N butane-2,3-diamine Chemical compound CC(N)C(C)N GHWVXCQZPNWFRO-UHFFFAOYSA-N 0.000 description 1
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- YMHQVDAATAEZLO-UHFFFAOYSA-N cyclohexane-1,1-diamine Chemical compound NC1(N)CCCCC1 YMHQVDAATAEZLO-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 125000004663 dialkyl amino group Chemical group 0.000 description 1
- CJCPHQCRIACCIF-UHFFFAOYSA-L disodium;dioxido-oxo-selanylidene-$l^{6}-sulfane Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=[Se] CJCPHQCRIACCIF-UHFFFAOYSA-L 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001473 dynamic force microscopy Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005264 electron capture Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 229910001195 gallium oxide Inorganic materials 0.000 description 1
- UPWPDUACHOATKO-UHFFFAOYSA-K gallium trichloride Chemical compound Cl[Ga](Cl)Cl UPWPDUACHOATKO-UHFFFAOYSA-K 0.000 description 1
- CKHJYUSOUQDYEN-UHFFFAOYSA-N gallium(3+) Chemical class [Ga+3] CKHJYUSOUQDYEN-UHFFFAOYSA-N 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 125000001188 haloalkyl group Chemical group 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 125000001072 heteroaryl group Chemical group 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- 239000003906 humectant Substances 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 238000001566 impedance spectroscopy Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 150000007527 lewis bases Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000013264 metal-organic assembly Substances 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- KYKLWYKWCAYAJY-UHFFFAOYSA-N oxotin;zinc Chemical compound [Zn].[Sn]=O KYKLWYKWCAYAJY-UHFFFAOYSA-N 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- ZNZJJSYHZBXQSM-UHFFFAOYSA-N propane-2,2-diamine Chemical compound CC(C)(N)N ZNZJJSYHZBXQSM-UHFFFAOYSA-N 0.000 description 1
- 238000004549 pulsed laser deposition Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-O pyridinium Chemical compound C1=CC=[NH+]C=C1 JUJWROOIHBZHMG-UHFFFAOYSA-O 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000013545 self-assembled monolayer Substances 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- BSHXYEOKVHYGGK-UHFFFAOYSA-N trichloro(1-trichlorosilyloctyl)silane Chemical compound CCCCCCCC([Si](Cl)(Cl)Cl)[Si](Cl)(Cl)Cl BSHXYEOKVHYGGK-UHFFFAOYSA-N 0.000 description 1
- CLXMTJZPFVPWAX-UHFFFAOYSA-N trichloro-[dichloro(trichlorosilyloxy)silyl]oxysilane Chemical compound Cl[Si](Cl)(Cl)O[Si](Cl)(Cl)O[Si](Cl)(Cl)Cl CLXMTJZPFVPWAX-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 229960001296 zinc oxide Drugs 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
Classifications
-
- 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
- H01L21/02551—Group 12/16 materials
- H01L21/02554—Oxides
-
- 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
- H01L21/02551—Group 12/16 materials
- H01L21/0256—Selenides
-
- 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
- H01L21/02565—Oxide semiconducting materials not being Group 12/16 materials, e.g. ternary compounds
-
- 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
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/02623—Liquid deposition
- H01L21/02628—Liquid deposition using solutions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- 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
- H10D30/675—Group III-V materials, Group II-VI materials, Group IV-VI materials, selenium or tellurium
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/01—Manufacture or treatment
- H10D86/021—Manufacture or treatment of multiple TFTs
- H10D86/0241—Manufacture or treatment of multiple TFTs using liquid deposition, e.g. printing
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D99/00—Subject matter not provided for in other groups of this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Thin Film Transistor (AREA)
- Formation Of Insulating Films (AREA)
Description
Ids=(W/2L)μCi(Vg−Vth)2 (1)
ここで、Lはチャネルの長さ、Wはチャネルの幅、Ciは誘電体膜の単位面積当りのキャパシタンス、μは半導体の電界効果移動度、Vthは閾値電圧、Vgはゲート電圧である。図2には代表的な転移及び出力I−Vプロットを示す。SiO2におけるデバイスを制御するために、CdSe膜は真空中及び雰囲気中で300℃で5分間アニール処理し、平均μFET値〜1.3(±1.1)cm2/Vs、最大μFET値〜3.0cm2/Vsを示すTFTを作成した。同じ条件の下で400℃でアニール処理したCdSe膜は、平均μFET値〜4.0(±2.0)cm2/Vs、最大μFET値〜6.7cm2/Vsを示すデバイスを提供する(図2A及び図2C)。400℃でアニール処理したデバイスの平均値Vth、サブ閾値勾配(S)、及びSiO2に基づくIon/Ioffはそれぞれ+25V、3.4V/dec及び106であった。これらのμFET値は、Alソース及びドレーン電極を備えたCBD CdSe/SiO2について前に述べた値より低い大きさの程度である。これらはnチャネルTFTであるので、Al対Auの低い仕事関数は、金属−半導体接触抵抗を低減でき、電子注入を高め、従って実測移動度を高める。それにもかかわらず、これらの移動度値は、1cm2/Vsの最大移動度を示したインクジェットで形成したCdSe膜を用いて製作したTFTの移動度より大きい。半導体成長領域は、次に、Ion/Ioff比及びデバイスの歩留まりを高めるために、ポリスチレン又はポリメチルメタクリル酸塩マスキングでパターン形成した。この方法は、適度な移動度をもってSiO2/CdSe TFT Ion/Ioff比を107に高め、そしてデバイスの歩留まりを>70%に高める。異なるチャネルの長さ/幅を利用する場合には、実測ドレーン電流はデバイスの寸法と線形に対応し、卓越した膜の一様性及び低い寄生漏れ電流を示す。
[実施例1a]
試薬CdCl2、Se、及びNa2SO3は、Aldrich Chemicals社から購入し、さらに精製することなく使用した。水性アンモニア(28〜30%)溶液はMallinckrodt Baker社から購入した。全ての堆積段階で使用した水はMilliporeナノ純水システムを用いて精製した。Na2SeSO3溶液は、0.2M(7.9ミリモル)のNa2SO3溶液40mL中の0.37g(4.7ミリモル)のSeを用い、水槽で1.5時間60℃に加熱してNa2SeSO3を作った。その後、溶解してないSeはろ紙でろ過して除去し、結果として、CBD溶液において用いられるのろ液を得た。CBD溶液は20mLの〜0.1M水性CdCl2、6.0mLの濃縮NH4OH、及び20mLの〜0.1M水性Na2SeSO3溶液から作った。その後この溶液は水槽を用いて80℃に加熱した。溶液がオレンジ色になった後、基板(7×2.5cm)をガラスホルダーに装着し、そしてCBD溶液に浸漬した。基板は最初に1分間溶液に入れ、そして脱イオン水で洗浄し、この段階を二回繰り返した。これらの初期表面状態調節段階の後、基板を再び〜15分間溶液に浸漬した。膜の堆積後、基板を新鮮な脱イオン水で5分間にわたって三回超音波処理し、その後空気乾燥してからアニール処理した。代表的なCdSe膜の厚さは160〜200nmであった。
[実施例1b]
[実施例2]
2−メトキシ−エタノール中、酢酸亜鉛(Zn(OAC)2)の0.1M溶液を作った。Zn(OAC)2と1:1の比率で溶液に化合物2−アミノ−エタノールを添加し、Zn(OAC)2の溶解度を高めて溶液濃度を0.1Mにした。また2−メトキシ−エタノール中、InCl3の0.1M溶液を作った。0.5mlのInCl3溶液と0.5mlのZn(OAC)2溶液とを混ぜてスピンキャスティング溶液を作った。そして前駆体膜を1500rpmでスピンキャストした。その後、前駆体膜を180℃で10分間予備アニール処理し、そしてZIOの第2の被覆をスピンキャストし、予備アニール処理し、その後ZIO膜を400℃で30分間アニール処理した。
[実施例3]
原子間力顕微鏡画像を、シリコン片持ばりを備えたIEOL−5200走査型プローブ顕微鏡を用いてタッピングモードで記録した。WinSPMソフトウエアを用いて像を処理した。Iencor model P10表面プロフィルメータを用いて膜の厚さを測定した。Niフィルタ付きCuKα放射線を用いたRigaku DMAX−A回折計で、CdSe膜の広角θ−2θX線回折(WAXRD)を行った。電気的測定は、ローカル的に書き込んだLABVIEWプログラム及び汎用インターフェースバス通信を用いたKeithley6430Sub−Femtoamp Remoteソースメータ及びKeithley 2400ソースメータで行った。インピーダンス分光分析測定はHewlett−Packard 4192Aインピーダンス分光計で行った。TFT特性決定は雰囲気条件の下で秘密に行った。飽和移動度は本文中の式(1)を用いて評価した。飽和移動度の計算は、デバイス転移プロットから誘導したIds 1/2のVGに対する勾配で行った。底部ゲート/頂部接点TFTアーキテクチュアを利用した。Au(50nm)ソース/ドレーン接点は、所望のチャネル寸法にするためにシャドーマスクを介して熱的蒸発によって堆積した。SAND膜は、上記の組み込まれた参照文献に記載されたような従来知られた方法に従って堆積した。
[実施例4a]
[実施例4b]
[実施例4c]
[実施例4d]
[実施例4e]
[実施例5]
[実施例6]
[実施例7]
[実施例7a]
[実施例7b]
[実施例7c]
[実施例7d]
[実施例8]
[実施例9]
アニール温度が200℃から250℃に上昇するにつれて移動度が増加することが観察された(図17A〜図17D及び図17F)。さらに、特に、移動度は、200℃での0.04cm2/Vsから250℃での2.11cm2/Vsに徐々に増加する。値は下記表9にまとめて示す。
[実施例10]
Claims (17)
- 一つ以上の金属塩と有機塩基を含み、前記有機塩基の前記一つ以上の金属塩に対するモル比が2〜15であるとともに、前記一つ以上の金属塩がインジウム塩を含む前駆体組成物を、無機半導体成分を作るように基板成分と接触させること、
前記無機半導体成分をアニール処理して無機半導体膜を形成すること、
少なくとも部分的に溶解できる誘電体成分を含む第2流体媒体を作ること、及び
前記誘電体成分を前記無機半導体膜に結合すること
を含む薄膜トランジスタデバイスの製造方法。 - 前記有機塩基は、アミノアルコールである、請求項1に記載の方法。
- 一つ以上の前記金属塩が、ハロゲン化物、オキサレート、カーボネート、アセテート、ホルメート、プロピオネート、サルファイト、サルフェート、アセチルアセトネート、水酸化物、ニトレート、過塩素酸塩、トリフルオロアセテート、トリフルオロアセチルアセトネート、トリフルオロメタンスルホネート、トシレート、メシレート、及びそれらの水和物から選択され、
一つ以上の前記金属塩の前記金属が、インジウム、スズ、亜鉛、及びガリウムから選択され、
前記無機半導体成分が金属酸化物である、請求項1に記載の方法。 - 前記無機半導体成分は、In2O3、InSnO2、InZnO2、及びIn−Ga−Zn−Oから選択される、請求項1に記載の方法。
- 前記第2流体媒体は、少なくとも部分的に熔解できる有機誘電体成分を含む、請求項1に記載の方法。
- 前記有機誘電体成分が、π分極可能な部分を含む有機双極子層を含み、前記有機双極子層の少なくとも一つがシロキサン結合連鎖で架橋される、請求項1に記載の方法。
- 前記有機双極子層が、スチルバゾリウム部分を含む非線形光学発色団を含む、請求項6に記載の方法。
- 前記第2流体媒体は、さらに、炭化水素層を含む有機誘電体成分を含み、前記炭化水素層は、少なくとも一つの前記有機双極子層にシリコン−酸素結合で結合する、請求項6に記載の方法。
- 少なくとも一つの前記有機双極子層は、シリコン−酸素結合でシロキサンキャッピング層に結合する、請求項8に記載の方法。
- 少なくとも一つの前記有機双極子層は、一方の端において、シリコン−酸素結合で第1のシロキサンキャッピング層に結合し、他方の端において、シリコン−酸素結合で第2のシロキサンキャッピング層に結合し、前記第1及び第2のシロキサンキャッピング層の一つは、前記有機双極子層と前記炭化水素層との間にあり、前記炭化水素層は、前記第1及び第2のシロキサンキャッピング層の一つにシリコン−酸素結合で結合する、請求項9に記載の方法。
- 前記有機誘電体成分が、ポリ(ビニルフェノール)、ポリスチレン、ポリ(メチルメタクリレート)、及びそれらの共重合体から選択される誘電体ポリマーを含む、請求項5に記載の方法。
- 前記第2流体媒体は、無機誘電体成分を含む、請求項1に記載の方法。
- 前記第1流体媒体と接触する前に薄膜組成物を作るように、前記基板成分に前記第2流体媒体を堆積することを含み、
前記薄膜組成物の前記第1流体媒体との接触は、インクジェット印刷法、スクリーン印刷法、グラビア印刷法、オフセット印刷法、パッド印刷法、リソグラフ印刷法、フレキソ印刷法、マイクロコンタクト印刷法、スピンコート法、ドロップ成形法、ゾーン成形法、浸漬コーティング法、ナイフコーティング法、及び噴霧法から選択した処理法による、請求項1に記載の方法。 - 前記誘電体成分を前記無機半導体膜に結合させることには、インクジェット印刷法、スクリーン印刷法、グラビア印刷法、オフセット印刷法、パッド印刷法、リソグラフ印刷法、フレキソ印刷法、マイクロコンタクト印刷法、スピンコート法、ドロップ成形法、ゾーン成形法、浸漬コーティング法、ナイフコーティング法、及び噴霧法から選択される処理により、前記第2流体媒体を前記無機半導体膜に堆積させることを含む、請求項1に記載の方法。
- 前記無機半導体成分が、400℃より低い温度で、あるいは約400℃の温度でアニール処理される、請求項1に記載の方法。
- 前記無機半導体成分が、250℃より低い温度、あるいは約250℃の温度でアニール処理される、請求項1に記載の方法。
- 前記誘電体成分は、実質的に透明な基板に結合される、請求項1に記載の方法。
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EP2245669A4 (en) | 2015-05-06 |
WO2009097150A2 (en) | 2009-08-06 |
KR101614789B1 (ko) | 2016-04-22 |
US20090206341A1 (en) | 2009-08-20 |
US20120223314A1 (en) | 2012-09-06 |
EP2245669A2 (en) | 2010-11-03 |
KR20100120295A (ko) | 2010-11-15 |
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US8017458B2 (en) | 2011-09-13 |
US8513646B2 (en) | 2013-08-20 |
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