WO2018225668A1 - 化学蒸着用原料、ならびに、化学蒸着用原料入り遮光容器およびその製造方法 - Google Patents
化学蒸着用原料、ならびに、化学蒸着用原料入り遮光容器およびその製造方法 Download PDFInfo
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- WO2018225668A1 WO2018225668A1 PCT/JP2018/021318 JP2018021318W WO2018225668A1 WO 2018225668 A1 WO2018225668 A1 WO 2018225668A1 JP 2018021318 W JP2018021318 W JP 2018021318W WO 2018225668 A1 WO2018225668 A1 WO 2018225668A1
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- vapor deposition
- chemical vapor
- indium
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- 238000005229 chemical vapour deposition Methods 0.000 title claims abstract description 67
- 239000002994 raw material Substances 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- RJMMFJHMVBOLGY-UHFFFAOYSA-N indium(3+) Chemical compound [In+3] RJMMFJHMVBOLGY-UHFFFAOYSA-N 0.000 claims abstract description 24
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 21
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 7
- PIPQOOWEMLRYEJ-UHFFFAOYSA-N indium(1+) Chemical compound [In+] PIPQOOWEMLRYEJ-UHFFFAOYSA-N 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 239000011261 inert gas Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 238000005160 1H NMR spectroscopy Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 claims 1
- 238000005234 chemical deposition Methods 0.000 claims 1
- 229910003437 indium oxide Inorganic materials 0.000 abstract description 4
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000010409 thin film Substances 0.000 abstract 1
- 229910052738 indium Inorganic materials 0.000 description 28
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 28
- DZMCSQWWSPSNJW-UHFFFAOYSA-N C(C)[In]C1C=CC=C1 Chemical compound C(C)[In]C1C=CC=C1 DZMCSQWWSPSNJW-UHFFFAOYSA-N 0.000 description 16
- JZPXQBRKWFVPAE-UHFFFAOYSA-N cyclopentane;indium Chemical compound [In].[CH]1[CH][CH][CH][CH]1 JZPXQBRKWFVPAE-UHFFFAOYSA-N 0.000 description 12
- 238000007323 disproportionation reaction Methods 0.000 description 11
- IQSUNBLELDRPEY-UHFFFAOYSA-N 1-ethylcyclopenta-1,3-diene Chemical compound CCC1=CC=CC1 IQSUNBLELDRPEY-UHFFFAOYSA-N 0.000 description 10
- 239000007787 solid Substances 0.000 description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 9
- 238000000231 atomic layer deposition Methods 0.000 description 7
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 7
- -1 ethylcyclopentadienylindium (I) Chemical compound 0.000 description 7
- 238000011049 filling Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 6
- 235000011089 carbon dioxide Nutrition 0.000 description 6
- 238000004821 distillation Methods 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- 229910021617 Indium monochloride Inorganic materials 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
- APHGZSBLRQFRCA-UHFFFAOYSA-M indium(1+);chloride Chemical compound [In]Cl APHGZSBLRQFRCA-UHFFFAOYSA-M 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000002411 thermogravimetry Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 150000002472 indium compounds Chemical class 0.000 description 3
- ZBDWUWNQBVXRMA-UHFFFAOYSA-N lithium;5-ethylcyclopenta-1,3-diene Chemical compound [Li+].CC[C-]1C=CC=C1 ZBDWUWNQBVXRMA-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000011135 tin Substances 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- VKWMOOFWZGJOQO-UHFFFAOYSA-N 5,5-diethylcyclopenta-1,3-diene Chemical compound CCC1(CC)C=CC=C1 VKWMOOFWZGJOQO-UHFFFAOYSA-N 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000003708 ampul Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- UFONJLYGCPBEEY-UHFFFAOYSA-N tris(1-ethylcyclopenta-2,4-dien-1-yl)indigane Chemical compound C(C)C1(C=CC=C1)[In](C1(C=CC=C1)CC)C1(C=CC=C1)CC UFONJLYGCPBEEY-UHFFFAOYSA-N 0.000 description 2
- BHFUICNIWDOQKS-UHFFFAOYSA-N CC=CC=C[In+2] Chemical compound CC=CC=C[In+2] BHFUICNIWDOQKS-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- VOCGXOGLPNJLKT-UHFFFAOYSA-N [In+2] Chemical compound [In+2] VOCGXOGLPNJLKT-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 125000000058 cyclopentadienyl group Chemical group C1(=CC=CC1)* 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000006471 dimerization reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229940030980 inova Drugs 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- QBZXOWQOWPHHRA-UHFFFAOYSA-N lithium;ethane Chemical compound [Li+].[CH2-]C QBZXOWQOWPHHRA-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000012264 purified product Substances 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
- H01B1/08—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
- C23C16/407—Oxides of zinc, germanium, cadmium, indium, tin, thallium or bismuth
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G15/00—Compounds of gallium, indium or thallium
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45553—Atomic layer deposition [ALD] characterized by the use of precursors specially adapted for ALD
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0036—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1884—Manufacture of transparent electrodes, e.g. TCO, ITO
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F17/00—Metallocenes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
Definitions
- the present invention relates to a raw material for chemical vapor deposition for forming an oxide film containing indium by chemical vapor deposition (CVD), a light shielding container filled with the raw material, and a method for manufacturing the same.
- CVD chemical vapor deposition
- the transparent conductive film has conductivity and excellent light transmittance with respect to visible light. Therefore, the transparent conductive film is used for electrodes of solar cells, liquid crystal display elements, and other various light receiving elements, and also has a reflection absorption characteristic in the near infrared region. Taking advantage of this, it is also used for reflective films used for window glass of automobiles and buildings, and various antistatic films.
- the transparent conductive film zinc oxide containing aluminum, gallium, indium or tin as a dopant, indium oxide containing tin, tungsten or titanium as a dopant is generally used.
- an indium oxide film containing tin as a dopant is called an ITO film and is widely used industrially as a low-resistance transparent conductive film.
- Examples of such a method for producing a transparent conductive film include physical vapor deposition (PVD) and chemical vapor deposition (CVD).
- PVD physical vapor deposition
- CVD chemical vapor deposition
- ALD Atomic layer deposition
- CVD chemical vapor deposition
- Non-Patent Document 1 using cyclopentadienyl indium (I) and two types of water and oxygen as an oxygen source, exposure to cyclopentadienyl indium (I), water and oxygen in this order is performed by ALD. By performing, a uniform transparent conductive indium oxide film is formed.
- Patent Document 1 an indium-containing oxide film is formed by ALD using an indium compound that is liquid at room temperature. Since cyclopentadienyl indium (I) is a solid, a transparent substrate having a large area is used. It is not suitable for materials.
- Non-Patent Document 2 describes that when cyclopentadienyl indium (I) is present in THF together with triscyclopentadienyl indium (III), triscyclopentadi It has been disclosed that enyl indium (III) stabilizes cyclopentadienyl indium (I). However, in order to be stabilized by this method, it must be stored in THF together with other indium compounds, which is not easy to handle when used.
- the precursor is preferably liquid at room temperature.
- the present invention is a raw material for producing an oxide film containing indium by chemical vapor deposition (CVD) such as atomic layer deposition (ALD), which can be stably stored and performs chemical vapor deposition (CVD).
- CVD chemical vapor deposition
- ALD atomic layer deposition
- CVD chemical vapor deposition
- alkylcyclopentadienyl indium (I) (C 5 H 4 R 1 —In) is converted to alkylcyclopentadiene (C 5 H 5 R 2 ), dialkylcyclopentadiene ((C 5 H 5 R 3 ) 2 ), or trisalkylcyclopentadienyl indium (III) (In (C 5 H 4 R 4 ) 3 )
- the present invention was completed.
- the present invention comprises the following items.
- the raw material for chemical vapor deposition of the present invention is composed mainly of alkylcyclopentadienyl indium (I) (C 5 H 4 R 1 —In; R 1 represents an alkyl group having 1 to 4 carbon atoms), Cyclopentadiene (C 5 H 5 R 2 ; R 2 represents an alkyl group having 1 to 4 carbon atoms), dialkylcyclopentadiene ((C 5 H 5 R 3 ) 2 ; R 3 represents 1 to 4 carbon atoms And trisalkylcyclopentadienyl indium (III) (In (C 5 H 4 R 4 ) 3 ; R 4 represents an alkyl group having 1 to 4 carbon atoms), and triscyclo Any one or more of pentadienylindium (III) is contained as a subcomponent, and substantially no solvent is contained.
- the chemical vapor deposition raw material is 1 were determined by H-NMR, H amount of alkyl cyclopentadienyl indium (I) with respect to (integral value), the alkyl cyclopentadiene, dialkyl cyclopentadiene, and tris alkyl cyclopentadienyl
- the total amount of H of indium (III) is preferably 0.01 or more and less than 0.5.
- the light shielding container of the present invention is a container that can be attached to a chemical vapor deposition apparatus filled with the raw material for chemical vapor deposition.
- the amount of In metal contained in the chemical vapor deposition material is preferably 0.1% by weight or less.
- a method for producing a light shielding container containing a raw material for chemical vapor deposition, which can be attached to the chemical vapor deposition apparatus of the present invention is obtained by adding an auxiliary component to alkylcyclopentadienylindium (I) (C 5 H 4 R 1 -In) as a main component.
- alkylcyclopentadiene (C 5 H 5 R 2 ), dialkylcyclopentadiene ((C 5 H 5 R 3 ) 2 ), trisalkylcyclopentadienyl indium (III) (In (C 5 H 4 R 4 ) 3 ) And triscyclopentadienylindium (III), a step 1 for preparing a raw material, and filling the light-shielded container that can be attached to a chemical vapor deposition apparatus in an inert gas with an inert gas And step 2.
- R 1 to R 4 each represents an alkyl group having 1 to 4 carbon atoms.
- alkylcyclopentadienyl indium (I) (C 5 H 4 R 1 -In)
- alkylcyclopentadiene dialkylcyclopentadiene
- trisalkylcyclopentadiene alkylcyclopentadiene
- enyl indium (III) or triscyclopentadienyl indium (III) alkylcyclopentadienyl indium (I) is stabilized, and at room temperature (23 ° C.) if protected from light in an inert gas atmosphere. It can also be stored below. Therefore, the raw material for chemical vapor deposition of the present invention is easy to handle for forming an oxide film containing indium by chemical vapor deposition (CVD).
- CVD chemical vapor deposition
- Example 1 The TG analysis result in Example 1 is shown.
- the TG analysis result in Example 2 is shown.
- the raw material for chemical vapor deposition of the present invention is mainly composed of alkylcyclopentadienyl indium (I) (C 5 H 4 R 1 —In) represented by the following formula (1), and represented by the following formula (2).
- R 1 to R 4 each independently represents an alkyl group having 1 to 4 carbon atoms.
- the raw material for chemical vapor deposition of the present invention is a raw material for producing an oxide film containing indium by chemical vapor deposition, and is an alkylcyclopentadienyl indium (I) (C 5 H 4 R 1 -In ) As the main component.
- R 1 to R 4 each independently represents an alkyl group having 1 to 4 carbon atoms.
- the alkyl group having 1 to 4 carbon atoms is preferably an ethyl group, an n-propyl group, or an n-butyl group, and particularly preferably an ethyl group.
- the chemical vapor deposition material is characterized by substantially not containing a solvent.
- Non-Patent Document 2 when both cyclopentadienylindium (I) and triscyclopentadienylindium (III) are present in THF, triscyclopentadienylindium (III) is cyclopentadienyl. Enil indium (I) is stabilized and the THF solution remains yellowish white for more than 4 months at 20 ° C., whereas a THF solution of cyclopentadienylindium (I) alone is initially yellowish white, It has been reported that after raising the temperature from 196 ° C. to 20 ° C., it turns brown after another 20 minutes and eventually becomes dark brown close to black.
- alkylcyclopentadienyl indium (I) (C 5 H 4 R 1 -In) is stabilized substantially without using a solvent, the stabilization mechanism described in the above document is used. Is clearly different.
- the above-mentioned raw materials for chemical vapor deposition are used to stabilize alkylcyclopentadienyl indium (I), in order to stabilize alkylcyclopentadienyl indium (I).
- One or more of III) is contained as a subcomponent.
- Alkylcyclopentadienyl indium (I) (C 5 H 4 R 1 -In) undergoes the following disproportionation reaction by light and heat at room temperature. 3 (C 5 H 4 R 1 -In) ⁇ 2In + In (C 5 H 4 R 1) 3
- alkylcyclopentadiene, dialkylcyclopentadiene, trisalkylcyclopentadienylindium (III), or triscyclopentadienylindium (III) coexist here, the above disproportionation reaction is caused.
- the effect of suppressing the progress can be exhibited and the alkylcyclopentadienyl indium (I) can be stabilized.
- the above disproportionation reaction is an endothermic reaction having a relatively low activation energy.
- the alkylcyclopentadienyl indium (I) is almost disproportionate even when excited to the activated state. It is considered that the original alkylcyclopentadienyl indium (I) does not proceed in the direction of conversion.
- R 2 to R 4 are preferably the same as R 1 . More preferably, R 1 to R 4 are all ethyl groups.
- Alkylcyclopentadiene, dialkylcyclopentadiene, trisalkylcyclopentadienylindium (III), and triscyclopentadienylindium (III) may be added alone or in combination of two or more. Good.
- alkylcyclopentadiene or dialkylcyclopentadiene When alkylcyclopentadiene or dialkylcyclopentadiene is added to the chemical vapor deposition raw material, the content is based on the amount of H (integral value) of alkylcyclopentadienylindium (I) measured by 1 H-NMR.
- the total amount of H of alkylcyclopentadiene and dialkylcyclopentadiene is 0.01 or more and less than 0.5.
- trisalkylcyclopentadienyl indium (III) or triscyclopentadienyl indium (III) is added to the chemical vapor deposition material, the content of alkylcyclopenta measured by 1 H-NMR
- the total amount of H of trisalkylcyclopentadienyl indium (III) is 0.01 or more and less than 0.5 with respect to the amount of H of dienylindium (I) (integral value).
- the content in the case where alkylcyclopentadiene and / or dialkylcyclopentadiene and triscyclopentadienylindium (III) are added to the chemical vapor deposition raw material is determined by alkylcyclopentadiene measured by 1 H-NMR.
- the total amount of H of alkylcyclopentadiene, dialkylcyclopentadiene, and trisalkylcyclopentadienyl indium (III) is 0.01 or more and less than 0.5 with respect to the amount of H (integral value) of enylindium (I). is there.
- the raw material for chemical vapor deposition includes: alkylcyclopentadienyl indium (I); as accessory components, alkylcyclopentadiene, dialkylcyclopentadiene, trisalkylcyclopentadienylindium (III), and triscyclopentadienyl.
- Step 1 in which at least one of indium (III) coexists, and a step of filling a light-shielded container that can be attached to a chemical vapor deposition apparatus in an inert gas with its subcomponent and alkylcyclopentadienylindium (I).
- step 1 there is no particular limitation on the method of coexisting the accessory component, alkylcyclopentadiene, dialkylcyclopentadiene, trisalkylcyclopentadienylindium (III), or triscyclopentadienylindium (III). It is effective to add it immediately after the components are purified by distillation.
- alkylcyclopentadiene or dialkylcyclopentadiene when it is in a solid state immediately after distillation purification, and add it before distillation and collect it together with alkylcyclopentadienyl indium (I). You can also.
- alkylcyclopentadiene When the distilled and purified alkylcyclopentadienyl indium (I) reacts with water, C 5 H 4 R 1 ⁇ In + H 2 O ⁇ InOH + C 5 H 4 R 1 H As a result of the reaction, alkylcyclopentadiene is produced, but since InOH is a solid, the supernatant is used to allow the alkylcyclopentadiene and / or dialkylcyclopentadiene produced by dimerization of the alkylcyclopentadiene to coexist. be able to.
- trisalkylcyclopentadienyl indium (III) or triscyclopentadienyl indium (III) is added, trisalkylcyclopentadienyl indium (III), etc. is generated by disproportionation, so it must be synthesized separately. Even if not added, the supernatant of the disproportionated mixture can be used.
- alkylcyclopentadienyl indium (I) in the presence of alkylcyclopentadiene, dialkylcyclopentadiene, trisalkylcyclopentadienyl indium (III), or triscyclopentadienyl indium (III) as a secondary component Is filled in a light-shielded container that can be attached to a chemical vapor deposition apparatus in an inert gas in step 2.
- the amount of In metal in the container is substantially 0 immediately after filling, and 0.5% by weight or less immediately before use as a raw material for evaporation. That is, the amount of In metal in the container is 0.5% by weight or less even after a long time.
- trisalkylcyclopentadienyl indium (III) and In metal produced by disproportionation have almost no vapor pressure in the temperature region where the main component, alkylcyclopentadienyl indium (I) evaporates. So there is no problem with chemical vapor deposition.
- the vapor pressure of the main component may slightly change depending on the by-product, so ALD (atomic layer) is not easily affected by the change in vapor pressure. It can be suitably used by the deposition method.
- Ethylcyclopentadienyl lithium (C 5 H 4 EtLi) was synthesized by reacting butyl lithium (BuLi) with an equimolar amount of ethyl cyclopentadiene (C 5 H 4 EtH) in hexane. After the synthesis, the solvent hexane was distilled off under reduced pressure to obtain solid ethylcyclopentadienyllithium. Next, diethyl ether was added to form a suspension, and 1.2 times molar amount of finely pulverized indium monochloride (InCl) powder was added and reacted to synthesize ethylcyclopentadienyl indium.
- InCl finely pulverized indium monochloride
- this receiver When this receiver was stored in an inert gas at room temperature for several days, it was melted, colored reddish brown, and indium metal was deposited. Even when the liquid in which the indium metal was deposited was transferred to an ampoule filled with an inert gas and stored in the dark for several days, no indium metal was deposited.
- 1 H-NMR (400 MHz, unity INOVA 400S manufactured by Varian) of this reddish brown liquid was measured, in addition to the signal of ethylcyclopentadienylindium, the same signal as that obtained by measuring ethylcyclopentadiene was obtained.
- Example 2 In the same manner as in Example 1, a yellowish white ethylcyclopentadienylindium solid was obtained in a receiver cooled with dry ice. The receiver was then stored in an inert gas at room temperature for several days and melted to obtain a reddish brown liquid. At this time, precipitation of indium metal was observed. Furthermore, ethyl cyclopentadiene was added to the reddish brown liquid and distilled under reduced pressure to obtain a solid mixture of ethyl cyclopentadienyl indium and ethyl cyclopentadiene in a receiver cooled with dry ice. A 1 H-NMR of a yellow to reddish brown liquid obtained by melting this mixture was measured.
- Example 1 In the same manner as in Example 1, a yellowish white ethylcyclopentadienylindium solid was obtained in a receiver cooled with dry ice. When this solid was melted in an inert gas, a yellow liquid was formed, but precipitation of indium metal was immediately observed. When this yellow liquid was transferred to an ampoule filled with an inert gas, metal deposition was immediately observed, and when the sample was stored until the next day, the deposit increased and the color became darker.
- This yellow liquid is considered to be highly pure ethylcyclopentadienylindium, but since it does not coexist with ethylcyclopentadiene or tris (ethylcyclopentadienyl) indium, disproportionation occurs immediately and the metal Since it deposits, when filling the light-shielded container which can be attached to a chemical vapor deposition apparatus, the pipe
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Abstract
Description
本発明の化学蒸着用原料は、アルキルシクロペンタジエニルインジウム(I)(C5H4R1-In;R1は炭素原子数1~4のアルキル基を表す。)を主成分とし、アルキルシクロペンタジエン(C5H5R2;R2は炭素原子数1~4のアルキル基を表す。)、ジアルキルシクロペンタジエン((C5H5R3)2;R3は炭素原子数1~4のアルキル基を表す。)、トリスアルキルシクロペンタジエニルインジウム(III)(In(C5H4R4)3;R4は炭素原子数1~4のアルキル基を表す。)、およびトリスシクロペンタジエニルインジウム(III)のいずれか一種以上を副成分として含有し、実質的に溶媒を含まないことを特徴とする。
また、副成分として、トリスアルキルシクロペンタジエニルインジウム(III)を含むことも好ましく、このときのR4はR1と同一であることが好ましい。
さらに、R1~R4の炭素原子数が同一であり、該炭素原子数は2であることが好ましい。
前記化学蒸着用原料は23℃において液体であることが好ましい。
前記化学蒸着用原料は、1H-NMRで測定した、アルキルシクロペンタジエニルインジウム(I)のH量(積分値)に対して、アルキルシクロペンタジエン、ジアルキルシクロペンタジエン、およびトリスアルキルシクロペンタジエニルインジウム(III)のH量の合計が0.01以上0.5未満であることが好ましい。
本発明の化学蒸着用原料は、化学蒸着法により、インジウムを含有する酸化物の膜を製造するための原料であって、アルキルシクロペンタジエニルインジウム(I)(C5H4R1-In)を主成分とする。
R1~R4はそれぞれ独立に炭素原子数1~4のアルキル基を表す。炭素原子数1~4のアルキル基は、エチル基、n-プロピル基、n-ブチル基であることが好ましく、エチル基であることが特に好ましい。
なお、η5-シクロペンタジエニルインジウム(I)(In(C5H5))、すなわち、上記式(1)において、R1がアルキル基でなく、水素原子に該当するとき、融点は約170℃であり、蒸留は困難である。
ここで、非特許文献2に、シクロペンタジエニルインジウム(I)およびトリスシクロペンタジエニルインジウム(III)の両方をTHF中に存在させると、トリスシクロペンタジエニルインジウム(III)がシクロペンタジエニルインジウム(I)を安定化し、該THF溶液は20℃で4ヶ月以上も黄白色を維持するが、シクロペンタジエニルインジウム(I)のみのTHF溶液は、最初は黄白色であるが、-196℃から20℃まで温度を上げた後、さらに20分後には茶色となり、やがて黒色に近い濃茶色となることが報告されている。
非特許文献2では、In(C5H5)3およびIn(C5H5)を含有するTHF溶液では、In(C5H5)3とIn(C5H5)のC5H5部位が、インジウム(II)種であるTHF・(C5H5)2In-In(C5H5)2・THFを経由して交換されるために、In(C5H5)が分解しにくいと、考察している。
3(C5H4R1-In)→2In+In(C5H4R1)3
しかしながら、上記副成分である、アルキルシクロペンタジエン、ジアルキルシクロペンタジエン、トリスアルキルシクロペンタジエニルインジウム(III)、またはトリスシクロペンタジエニルインジウム(III)をここに共存させると、上記不均化反応の進行を抑制する効果を発揮し、アルキルシクロペンタジエニルインジウム(I)を安定化することができる。
C5H4R1-In+H2O→InOH+C5H4R1H
の反応により、アルキルシクロペンタジエンが生成するが、InOHは固体なので、その上澄み液を用いることで、このときに生成したアルキルシクロペンタジエンおよび/またはそのアルキルシクロペンタジエンが二量化したジアルキルシクロペンタジエンを共存させることができる。
本発明の方法によって充填した場合、容器内のInメタルの量は、充填直後には実質的に0であり、蒸発用原料として使用する直前には0.5重量%以下である。すなわち、容器内のInメタルの量は、長時間経過しても0.5重量%以下である。
ヘキサン中で、ブチルリチウム(BuLi)と等モル量のエチルシクロペンタジエン(C5H4EtH)とを反応させて、エチルシクロペンタジエニルリチウム(C5H4EtLi)を合成した。合成後、溶媒のヘキサンを減圧留去し、固体のエチルシクロペンタジエニルリチウムを得た。次に、ジエチルエーテルを添加して懸濁液とし、そこに1.2倍モル量の細かく粉砕した一塩化インジウム(InCl)粉末を添加して反応させ、エチルシクロペンタジエニルインジウムを合成した。一塩化インジウム添加後は、工程チェック時以外は遮光して反応を行った。得られた懸濁液から、ジエチルエーテルを減圧留去した後、減圧蒸留することによって、ドライアイス冷却した受器に黄白色固体のエチルシクロペンタジエニルインジウムを得た。
なお、エチルシクロペンタジエニルインジウムは光と熱および大気に極めて敏感と予想されたため、上記の合成は不活性ガス中で行った。
実施例1と同様にして、ドライアイス冷却した受器に黄白色のエチルシクロペンタジエニルインジウムの固体を得た。
次に、この受器を不活性ガス中、室温で数日間保存して、融解させ、赤褐色の液体を得た。このとき、インジウムメタルの析出が見られた。さらに、この赤褐色の液体にエチルシクロペンタジエンを添加して減圧蒸留することによって、ドライアイス冷却した受器にエチルシクロペンタジエニルインジウムとエチルシクロペンタジエンの混合物の固体を得た。この混合物を融解させた黄色~赤褐色の液体の1H-NMRを測定したところ、エチルシクロペンタジエニルインジウムの信号に加えて、常温で保存したエチルシクロペンタジエンを測定して得られる信号と同様の信号が得られ、減圧蒸留によってエチルシクロペンタジエニルインジウムとエチルシクロペンタジエンの混合物の液体が得られたことが確認された。この混合物を数日間遮光保存しても、インジウムメタルの析出は見られなかった。
実施例1と同様にして、ドライアイス冷却した受器に黄白色のエチルシクロペンタジエニルインジウムの固体を得た。この固体を不活性ガス中で融解させたところ黄色液体となったが、すぐにインジウムメタルの析出が見られた。この黄色液体を不活性ガス充填したアンプルに移したところ、すぐにメタルの析出が見られ、さらに翌日まで保存したところ、析出物が増え、色が濃くなった。
Claims (8)
- アルキルシクロペンタジエニルインジウム(I)(C5H4R1-In;R1は炭素原子数1~4のアルキル基を表す。)を主成分として、
アルキルシクロペンタジエン(C5H5R2;R2は炭素原子数1~4のアルキル基を表す。)、ジアルキルシクロペンタジエン((C5H5R3)2;R3は炭素原子数1~4のアルキル基を表す。)、トリスアルキルシクロペンタジエニルインジウム(III)((C5H4R4)3-In;R4は炭素原子数1~4のアルキル基を表す。)、およびトリスシクロペンタジエニルインジウム(III)のいずれか一種以上を副成分として含有し、
実質的に溶媒を含まないことを特徴とする化学蒸着用原料。 - 前記R1~R4の炭素原子数が等しい、請求項1に記載の化学蒸着用原料。
- 23℃において液体である、請求項2に記載の化学蒸着用原料。
- R1~R4の炭素原子数が全て2である、請求項1に記載の化学蒸着用原料。
- 1H-NMRで測定した、アルキルシクロペンタジエニルインジウム(I)のH量(積分値)に対して、アルキルシクロペンタジエン、ジアルキルシクロペンタジエン、およびトリスアルキルシクロペンタジエニルインジウム(III)のH量の合計が0.01以上0.5未満である、請求項1~4のいずれか一項に記載の化学蒸着用原料。
- 請求項1~5のいずれか一項に記載の化学蒸着用原料を充填した、化学蒸着装置に取り付け可能な化学蒸着用原料入り遮光容器。
- 前記化学蒸着用原料に含まれるInメタルの量が0.5重量%以下である、請求項6に記載の化学蒸着用原料入り遮光容器。
- 主成分であるアルキルシクロペンタジエニルインジウム(I)(C5H4R1-In;R1は炭素原子数1~4のアルキル基を表す。)に、副成分として、アルキルシクロペンタジエン(C5H5R2;R2は炭素原子数1~4のアルキル基を表す。)、ジアルキルシクロペンタジエン((C5H5R3)2;R3は炭素原子数1~4のアルキル基を表す。)、トリスアルキルシクロペンタジエニルインジウム(III)((C5H4R4)3-In;R4は炭素原子数1~4のアルキル基を表す。)、およびトリスシクロペンタジエニルインジウム(III)のいずれか一種以上を共存させた原料を調製する工程1と、その原料を不活性ガス中、化学蒸着装置に取り付け可能な遮光した容器に充填する工程2とを有することを特徴とする、化学蒸着装置に取り付け可能な、化学蒸着用原料入り遮光容器の製造方法。
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EP3936636A4 (en) * | 2019-03-05 | 2023-03-01 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | INDIUM COMPOUND AND METHOD FOR FORMING AN INDIUM-CONTAINING FILM USING SUCH INDIUM COMPOUND |
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KR102631494B1 (ko) * | 2019-03-05 | 2024-01-30 | 레르 리키드 쏘시에떼 아노님 뿌르 레드 에렉스뿔라따시옹 데 프로세데 조르즈 클로드 | 인듐 화합물 및 이 인듐 화합물을 이용한 인듐 함유 막의 형성 방법 |
US11859283B2 (en) | 2020-07-28 | 2024-01-02 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Heteroalkylcyclopentadienyl indium-containing precursors and processes of using the same for deposition of indium-containing layers |
WO2022035795A1 (en) * | 2020-08-13 | 2022-02-17 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Mono-substituted cyclopentadienes and metal cyclopentadienyl complexes and synthesis methods thereof |
US11274069B2 (en) | 2020-08-13 | 2022-03-15 | L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Mono-substituted cyclopentadienes and metal cyclopentadienyl complexes and synthesis methods thereof |
KR20230108319A (ko) | 2020-12-04 | 2023-07-18 | 가부시키가이샤 고준도가가쿠 겐큐쇼 | 인듐 및 1종 이상의 다른 금속을 함유하는 막을 제조하기 위한 증착용 원료 및 인듐 및 1종 이상의 다른 금속을 함유하는 막의 제조 방법 |
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KR20200009073A (ko) | 2020-01-29 |
JP7026404B2 (ja) | 2022-02-28 |
TW201907039A (zh) | 2019-02-16 |
US11655538B2 (en) | 2023-05-23 |
TWI736776B (zh) | 2021-08-21 |
US20200181775A1 (en) | 2020-06-11 |
JPWO2018225668A1 (ja) | 2020-04-09 |
KR102367495B1 (ko) | 2022-02-23 |
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