WO2014091960A1 - 有機トランジスタ製造用溶剤又は溶剤組成物 - Google Patents
有機トランジスタ製造用溶剤又は溶剤組成物 Download PDFInfo
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- WO2014091960A1 WO2014091960A1 PCT/JP2013/082369 JP2013082369W WO2014091960A1 WO 2014091960 A1 WO2014091960 A1 WO 2014091960A1 JP 2013082369 W JP2013082369 W JP 2013082369W WO 2014091960 A1 WO2014091960 A1 WO 2014091960A1
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- 0 C*(*)c1ccc(C(C)(*)*)[s]1 Chemical compound C*(*)c1ccc(C(C)(*)*)[s]1 0.000 description 4
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
- H10K71/15—Deposition of organic active material using liquid deposition, e.g. spin coating characterised by the solvent used
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/04—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
- C07D307/10—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D307/16—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
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- 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
- H01B1/20—Conductive material dispersed in non-conductive organic material
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6576—Polycyclic condensed heteroaromatic hydrocarbons comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K10/00—Organic devices specially adapted for rectifying, amplifying, oscillating or switching; Organic capacitors or resistors having potential barriers
- H10K10/40—Organic transistors
- H10K10/46—Field-effect transistors, e.g. organic thin-film transistors [OTFT]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
- H10K85/113—Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene
Definitions
- the present invention relates to a solvent or solvent composition for producing an organic transistor excellent in solubility of an organic semiconductor material, and a composition for producing an organic transistor comprising the solvent or solvent composition for producing an organic transistor and an organic semiconductor material.
- Transistors are widely used as important semiconductor electronic devices constituting displays and computer equipment, and conventionally inorganic materials such as polysilicon and amorphous silicon have been used as semiconductor materials.
- a vacuum process or a high-temperature process is required, which raises a problem of increasing manufacturing costs.
- a high temperature process is included, there is a limit to a substrate that can be used, and for example, a glass substrate or the like has been mainly used.
- the glass substrate has high heat resistance, it is difficult to reduce the weight because it is vulnerable to impact, and it is difficult to form a flexible transistor because of its poor flexibility.
- Organic semiconductor materials can be easily formed into thin films by a simple process using a wet process such as a printing method, spin coating method, etc., and the manufacturing process temperature can be lowered compared to transistors using conventional inorganic semiconductor materials.
- a wet process such as a printing method, spin coating method, etc.
- the manufacturing process temperature can be lowered compared to transistors using conventional inorganic semiconductor materials.
- Non-Patent Document 1 Low molecular weight semiconductor materials such as dinaphtho [2,3-b: 2 ′, 3′-f] thieno [3,2-b] thiophene as organic semiconductor materials. It is known to do (Non-Patent Document 1). However, most of the unsubstituted acene compounds represented by dinaphtho [2,3-b: 2 ′, 3′-f] thieno [3,2-b] thiophene are due to strong intermolecular interactions due to the ⁇ -conjugated system. Poor solubility in solvent (Patent Document 1).
- Patent Documents 2 and 3 use a compound in which an acene compound is provided with a leaving group for imparting solubility as an organic semiconductor material, and a halide such as chloroform or dichlorobenzene as a solvent.
- a leaving group for imparting solubility as an organic semiconductor material
- a halide such as chloroform or dichlorobenzene
- Non-Patent Document 2 a compound in which an alkyl substituent for imparting solubility is imparted to an acene compound is used as an organic semiconductor material, and a halide having high solubility in the organic semiconductor material is used as a solvent.
- halides are concerned about ecotoxicity and have problems in work safety.
- Patent Document 4 describes that a thin film is formed using a dispersion of an unsubstituted acene compound.
- it is difficult to maintain the dispersibility by preventing aggregation of the unsubstituted acene compound contained in the dispersion, and the charge mobility is reduced due to the random aggregation of the unsubstituted acene compound. It was a problem to decrease.
- an object of the present invention is to provide a solvent or a solvent composition for producing an organic transistor capable of forming an organic transistor having excellent solubility of an organic semiconductor material and high crystallinity.
- Another object of the present invention is to provide a composition for producing an organic transistor comprising the solvent or solvent composition for producing the organic transistor.
- the present inventors can achieve high organic semiconductor material solubility even at relatively low temperatures when using a specific solvent or solvent composition, and have low heat resistance compared to a glass substrate. It was found that organic transistors can be formed on a plastic substrate by printing. Moreover, the organic transistor manufacturing composition containing the said solvent or solvent composition discovered that an organic-semiconductor material crystallized by the self-organization effect
- this invention provides the solvent or solvent composition for organic-transistor material melt
- R 1 is a C 1-4 alkyl group, a C 1-4 acyl group, a C 5-6 cycloalkane ring, a C 5-6 cycloalkene ring, a C 6-12 aryl group, or a combination of two or more thereof.
- R 2 , R 3 , R 4 and R 5 are the same or different and are a hydrogen atom, a C 1-4 alkyl group, or a C 1-4 acyl group, and R 6 is a C 1- 4 is an alkyl group, or a C 1-4 acyl group, R 1 and R 3 may be bonded to each other to form a ring with the adjacent oxygen atom and carbon atom, n is 1 or 2, m Is an integer from 0 to 2)
- solvent A examples include ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, ethylene glycol monoethyl ether acetate, ethylene glycol monopropyl ether acetate, ethylene glycol monobutyl ether acetate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol dimethyl ether, propylene glycol.
- Ar is a group obtained by removing two hydrogen atoms from a cyclic compound
- the cyclic compound is a compound represented by any one of formulas (A-1) to (A-5)).
- R ′ and R ′′ are the same or different and each has a hydrogen atom, a C 1-18 alkyl group which may have a substituent, a phenyl group which may have a substituent, or a substituent.
- the present invention also provides an organic transistor manufacturing composition comprising an organic semiconductor material and the organic transistor manufacturing solvent or solvent composition.
- Ar is a group obtained by removing two hydrogen atoms from a cyclic compound
- the cyclic compound is a compound represented by any one of formulas (A-1) to (A-5)).
- R ′ and R ′′ are the same or different and each has a hydrogen atom, a C 1-18 alkyl group which may have a substituent, a phenyl group which may have a substituent, or a substituent.
- a solvent or solvent composition for dissolving an organic semiconductor material comprising the solvent A represented by the formula (A).
- Solvent A is ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, ethylene glycol monoethyl ether acetate, ethylene glycol monopropyl ether acetate, ethylene glycol monobutyl ether acetate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol dimethyl ether, propylene Glycol methyl ethyl ether, propylene glycol methyl propyl ether, propylene glycol methyl butyl ether, dipropylene glycol dimethyl ether, dipropylene glycol methyl ethyl ether, dipropylene glycol methyl propyl ether, dipropylene glycol methyl butyl At least selected from ether,
- the organic semiconductor material has one or more of the compound (1) represented by the formula (1) and the repeating unit represented by the formulas (2-a) to (2-d).
- the solvent or solvent composition for producing an organic transistor according to (1) or (2) which is at least one compound selected from the compound (2).
- the organic semiconductor material, the solvent for producing an organic transistor according to (1) or (2), or (5) the compound (1) represented by the formula (1) and the formula (1) The composition for producing an organic transistor according to (4), which is at least one compound selected from compounds (2) having one or more repeating units represented by 2-a) to (2-d) object.
- the solvent or solvent composition for producing an organic transistor of the present invention has high organic semiconductor material solubility even at a relatively low temperature. Therefore, heat resistance is low compared to glass substrates, but organic transistors can be directly formed on plastic substrates that are resistant to impact and lightweight and flexible, forming lightweight, flexible displays and computer devices that are resistant to impact. can do. Further, an organic transistor can be easily manufactured by a simple method using a wet process such as a printing method or a spin coating method, and the cost can be significantly reduced. And when the composition for organic transistor manufacture of this invention is apply
- the solvent or solvent composition for producing an organic transistor of the present invention is a solvent or solvent composition for dissolving an organic semiconductor material, and includes the solvent A represented by the above formula (A).
- R 1 is a C 1-4 alkyl group, a C 1-4 acyl group, a C 5-6 cycloalkane ring, a C 5-6 cycloalkene ring, a C 6-12 aryl group, or these are 2 This is a group formed by bonding.
- R 2 , R 3 , R 4 and R 5 are the same or different and are a hydrogen atom, a C 1-4 alkyl group, or a C 1-4 acyl group.
- R 6 is a C 1-4 alkyl group or a C 1-4 acyl group.
- R 1 and R 3 may be bonded to each other to form a ring together with the adjacent oxygen atom and carbon atom.
- n is 1 or 2
- m is an integer of 0-2.
- Examples of the ring formed by combining R 1 and R 3 together with adjacent oxygen and carbon atoms include, for example, 5- to 7-membered heterocyclic compounds containing an oxygen atom as a heteroatom such as a tetrahydrofuran ring. Can be mentioned.
- Examples of the solvent A of the present invention include ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dipropyl ether, ethylene glycol dibutyl ether, ethylene glycol methyl ethyl ether, ethylene glycol methyl propyl ether, ethylene glycol methyl butyl ether, and ethylene glycol ethyl.
- ethylene glycol dimethyl ether diethylene glycol dimethyl ether, ethylene glycol monoethyl ether acetate, ethylene glycol monopropyl ether acetate, ethylene glycol monobutyl ether acetate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol dimethyl ether, Propylene glycol methyl ethyl ether, propylene glycol methyl propyl ether, propylene glycol methyl butyl ether, dipropylene glycol dimethyl ether, dipropylene glycol methyl ethyl ether, dipropylene glycol methyl propyl ether, dipropylene glycol Selected from methyl butyl ether, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, dipropylene glycol monomethyl ether acetate, dipropylene glycol monomethyl ether acetate
- the content of the solvent A in the solvent or solvent composition for organic transistor production (100% by weight) (when two or more are included, the total amount thereof) is preferably 50% by weight or more (for example, 50 to 100% by weight), 70 A weight percent or more (eg, 70 to 100 weight percent) is particularly preferred.
- the content of the solvent A is below the above range, the solubility of the organic semiconductor material tends to decrease.
- solvent B examples include (mono, di, tri) alkylene glycol monoalkyl ether, C 3-6 alcohol, C 3-6 alkanediol, C 3-6 alkanediol monoalkyl ether, C 3-6 alkanediol alkyl.
- Examples of the (mono, di, tri) alkylene glycol monoalkyl ether include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol n-propyl ether, ethylene glycol n-butyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether.
- Examples of the C 3-6 alcohol include n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol, tert-butyl alcohol, n-pentyl alcohol, n-hexyl alcohol, and 2-hexyl alcohol. Can be mentioned.
- Examples of the C 3-6 alkanediol include 1,3-butylene glycol, 1,4-butanediol, 1,6-hexanediol, and the like.
- Examples of the C 3-6 alkanediol monoalkyl ether include 3-methoxybutanol.
- Examples of the C 3-6 alkanediol alkyl ether acetate include 3-methoxybutyl acetate.
- Examples of the C 4-6 alkanediol diacetate include 1,4-butanediol diacetate and 1,6-hexanediol diacetate.
- hydroxycarboxylic acid ester examples include methyl lactate and ethyl lactate.
- hydroxycarboxylic acid diester examples include methyl lactate acetate and ethyl lactate acetate.
- alkoxycarboxylic acid ester examples include methyl methoxypropionate and ethyl ethoxypropionate.
- cyclic ketone examples include cyclopentanone, cyclohexanone, 4-ketoisophorone, and the like.
- lactones examples include ⁇ -butyrolactone, ⁇ -butyrolactone, ⁇ -caprolactone, ⁇ -valerolactone, ⁇ -valerolactone, ⁇ -acetyl- ⁇ -butyrolactone, and the like.
- Examples of the cyclic ether include tetrahydrofuran and tetrahydrofurfuryl alcohol.
- amides examples include dimethylformamide.
- pyridines examples include pyridine and methylpyridine.
- aromatic hydrocarbon examples include toluene and tetralin.
- aromatic acetate examples include phenyl acetate.
- aromatic ether examples include anisole.
- amines examples include diethylamine and triethylamine.
- the solvent A and the solvent B together by using the solvent A and the solvent B together, it is possible to form a composition for producing an organic transistor that contains an organic semiconductor material at a high concentration and is excellent in coating property, drying property, and the like.
- one or more solvents selected from cyclic ketones, cyclic ethers, aromatic hydrocarbons, aromatic acetates and aromatic ethers in combination.
- the mixing ratio (the former / the latter (weight ratio)) is, for example, 95/5 to 50/50, and preferably 95/5 to 70/30.
- the ratio of the solvent B increases compared to the solvent A, the solubility of the organic semiconductor material tends to decrease.
- it is the total amount. The same applies to the solvent B.
- the solvent or solvent composition for producing an organic transistor of the present invention contains the solvent A, it has a high solubility in organic semiconductor materials even at a relatively low temperature.
- the solubility of the compound represented by the formula (1) at 100 ° C. is, for example, 0.05 parts by weight or more, preferably 0.06 parts by weight with respect to 100 parts by weight of the solvent or solvent composition for producing an organic transistor.
- the amount is particularly preferably 0.07 parts by weight or more.
- the upper limit of solubility is, for example, 0.5 parts by weight, preferably 0.4 parts by weight, particularly preferably 0.3 parts by weight.
- the solvent or solvent composition for producing an organic transistor of the present invention is a solvent or solvent composition for dissolving an organic semiconductor material.
- the organic semiconductor material is not particularly limited.
- the compound (1) represented by the formula (1) and the repeating units represented by the formulas (2-a) to (2-d) At least one compound selected from one or more compounds (2) is preferred. These can be used individually by 1 type or in combination of 2 or more types.
- Ar is a group obtained by removing two hydrogen atoms from a cyclic compound, and the cyclic compound is represented by any one of the formulas (A-1) to (A-5).
- R ′ and R ′′ may be the same or different and may be a hydrogen atom, a C 1-18 alkyl group which may have a substituent, a phenyl group which may have a substituent, or a substituent.
- a linear or branched alkyl group can be mentioned.
- Examples of the substituent that the C 1-18 alkyl group may have include aryl groups having 6 to 10 carbon atoms such as phenyl and naphthyl groups.
- Examples of the substituent that the phenyl group, naphthyl group, and thiophenyl group may have include, for example, 1 to 12 carbon atoms such as methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, and t-butyl. And a linear or branched alkyl group.
- the compound represented by the following formula (1-1) is particularly preferable because an organic transistor having a large crystal grain can be obtained.
- R represents an optionally substituted C 1-24 alkyl group, an optionally substituted phenyl group, and an optionally substituted naphthyl group. Or a thiophenyl group which may have a substituent.
- Examples of the substituent that the C 1-24 alkyl group, phenyl group, naphthyl group, and thiophenyl group in R may have include the same examples as those described above for R ′ and R ′′.
- the number of repeating units (polymerization degree) in the compound (2) is preferably about 2 to 5000, for example. Moreover, when it has 2 or more types of repeating units, each repeating unit may be couple
- the compound (2) among them, compounds having repeating units represented by the following formulas (2-1) to (2-3) are preferable in that an organic transistor having a large crystal grain can be obtained.
- k, l, and m are the number of repeating units shown in parentheses and represent an integer of 2 to 5000.
- composition for manufacturing an organic transistor of the present invention includes the organic semiconductor material and the solvent or solvent composition for manufacturing the organic transistor.
- the composition for producing an organic transistor of the present invention comprises, for example, a mixture of the organic semiconductor material and the solvent or solvent composition for producing the organic transistor, and a temperature of about 70 to 150 ° C. under a light shielding condition in a nitrogen atmosphere. For about 0.1 to 10 hours.
- the content of the organic semiconductor material (particularly the compound represented by the formula (1)) in the composition for producing an organic transistor (100% by weight) of the present invention is, for example, It is 0.05% by weight or more, preferably 0.06% by weight or more, particularly preferably 0.07% by weight or more.
- the upper limit is, for example, 0.5% by weight, preferably 0.4% by weight, particularly preferably 0.3% by weight.
- the content of the organic transistor-producing solvent or solvent composition in the organic transistor-producing composition (100% by weight) of the present invention is, for example, 99.99% by weight or less.
- the lower limit is, for example, 92.00% by weight, preferably 95.00% by weight, particularly preferably 95.50% by weight, and the upper limit is preferably 99.98% by weight, particularly preferably 99.96% by weight. is there.
- the amount of the organic transistor manufacturing solvent or the solvent composition contained in the organic transistor manufacturing composition of the present invention promotes crystallization by the self-organizing action of the organic semiconductor material.
- the amount of the organic semiconductor material contained in the composition for producing an organic transistor of the present invention (particularly, the amount of the compound represented by the formula (1), and the total amount when containing two or more kinds).
- it is preferably 200 times (weight) or more, more preferably 250 times (weight) or more, and particularly preferably 333 times (weight) or more.
- the upper limit is, for example, 2000 times (weight), preferably 1667 times (weight), and particularly preferably 1429 times (weight).
- the composition for producing an organic transistor of the present invention includes, in addition to the organic semiconductor material and the solvent or solvent composition for producing an organic transistor, other components (for example, epoxy) contained in a general composition for producing an organic transistor.
- Resin, acrylic resin, cellulose resin, and raw material of resin such as butyral resin can be appropriately blended as necessary.
- the composition for producing an organic transistor of the present invention can dissolve an organic semiconductor material at a high concentration even at a relatively low temperature. Therefore, the heat resistance is lower than that of a glass substrate, but an organic transistor can be directly formed on a plastic substrate that is resistant to impact and lightweight and flexible, and forms a display and computer equipment that is resistant to impact and lightweight and flexible. be able to. Further, since the composition for producing an organic transistor of the present invention contains the solvent or solvent composition for producing an organic transistor of the present invention, the organic semiconductor material is crystallized by a self-organizing action when applied on a substrate, and has high crystallinity. An organic transistor having Furthermore, an organic transistor can be easily formed by a simple method using a wet process such as a printing method or a spin coating method, and the cost can be greatly reduced.
- Example 1 Dinaphtho [2,3-b: 2 ′, 3′-f] thieno [3,2-b] thiophene (DNTT: compound represented by formula (1-1)) (Wako Pure Chemical Industries, Ltd.) as an organic semiconductor material ) And tetrahydrofurfuryl acetate (THFFA: manufactured by Daicel Corporation) was used as a solvent for organic transistor production. Under an environment of 20 ° C., the organic semiconductor material was dispersed in the organic transistor manufacturing solvent so that its concentration was 0.08 wt% to 0.15 wt%. Then, it heated at 100 degreeC for about 6 hours under nitrogen atmosphere and light-shielding conditions, and obtained the composition for organic transistor manufacture. The insoluble matter in the obtained composition for producing an organic transistor was visually confirmed, and the solubility of the organic semiconductor material was evaluated according to the following criteria. Evaluation criteria When no insoluble material is confirmed: ⁇ (dissolved) When insoluble matter is confirmed: x (insoluble)
- THFFA Tetrahydrofurfuryl acetate (manufactured by Daicel Corporation)
- EDGAC Diethylene glycol monoethyl ether acetate (manufactured by Daicel Corporation)
- DPMA Dipropylene glycol monomethyl ether acetate (manufactured by Daicel Corporation)
- PMNP Propylene glycol methyl n-propyl ether (manufactured by Daicel Corporation)
- PMNB Propylene glycol methyl n-butyl ether (manufactured by Daicel Corporation)
- DMM Dipropylene glycol dimethyl ether (manufactured by Daicel Corporation)
- DPMNP Dipropylene glycol methyl n-propyl ether (manufactured by Daicel Corporation)
- DPMNB Dipropylene glycol methyl n-butyl ether (manufactured by Daicel Corporation) MBA: 3-methoxybutanol acetate
- Example 10 Poly (3-hexylthiophene-2,5-diyl) (regular) (P3HT: a compound represented by formula (2-1)) is used as an organic semiconductor material, and cyclohexanol acetate is used as a solvent for organic transistor production. used.
- P3HT poly (3-hexylthiophene-2,5-diyl) (regular)
- cyclohexanol acetate is used as a solvent for organic transistor production. used.
- an organic semiconductor material was dispersed in a solvent for producing an organic transistor so that its concentration was 0.50% by weight. Then, it heated at 100 degreeC for about 6 hours under nitrogen atmosphere and light-shielding conditions, and obtained the composition for organic transistor manufacture. Insoluble matters were not confirmed in the obtained composition for producing an organic transistor.
- the solvent for producing an organic transistor of the present invention is an organic semiconductor material (formula (1)) rather than the conventionally used 1,2-dichlorobenzene (o-DCB).
- o-DCB 1,2-dichlorobenzene
- the solubility of dinaphtho [2,3-b: 2 ′, 3′-f] thieno [3,2-b] thiophene: DNTT) is excellent.
- the solvent for producing an organic transistor of the present invention is poly (3-hexylthiophene-2,5-diyl) (regular) (P3HT: compound represented by the formula (2-1) ) With excellent solubility.
- the organic transistor manufacturing solvent of the present invention is excellent in handleability.
- the solvent or solvent composition for producing an organic transistor of the present invention has high organic semiconductor material solubility even at a relatively low temperature. Therefore, heat resistance is low compared to glass substrates, but organic transistors can be directly formed on plastic substrates that are resistant to impact and lightweight and flexible, forming lightweight, flexible displays and computer devices that are resistant to impact. can do. Further, an organic transistor can be easily manufactured by a simple method using a wet process such as a printing method or a spin coating method, and the cost can be significantly reduced. And when the composition for organic transistor manufacture of this invention is apply
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Abstract
Description
本発明の他の目的は、前記有機トランジスタ製造用溶剤又は溶剤組成物を含む有機トランジスタ製造用組成物を提供することにある。
で表される化合物(1)、及び下記式(2-a)~(2-d)
で表される繰り返し単位を1種又は2種以上有する化合物(2)から選択される少なくとも1種の化合物であることが好ましい。
で表される化合物(1)、及び下記式(2-a)~(2-d)
で表される繰り返し単位を1種又は2種以上有する化合物(2)から選択される少なくとも1種の化合物であることが好ましい。
(1) 有機半導体材料溶解用の溶剤又は溶剤組成物であって、前記式(A)で表される溶剤Aを含む有機トランジスタ製造用溶剤又は溶剤組成物。
(2) 溶剤Aが、エチレングリコールジメチルエーテル、ジエチレングリコールジメチルエーテル、エチレングリコールモノエチルエーテルアセテート、エチレングリコールモノプロピルエーテルアセテート、エチレングリコールモノブチルエーテルアセテート、ジエチレングリコールモノエチルエーテルアセテート、ジエチレングリコールモノブチルエーテルアセテート、プロピレングリコールジメチルエーテル、プロピレングリコールメチルエチルエーテル、プロピレングリコールメチルプロピルエーテル、プロピレングリコールメチルブチルエーテル、ジプロピレングリコールジメチルエーテル、ジプロピレングリコールメチルエチルエーテル、ジプロピレングリコールメチルプロピルエーテル、ジプロピレングリコールメチルブチルエーテル、プロピレングリコールモノメチルエーテルアセテート、プロピレングリコールモノエチルエーテルアセテート、ジプロピレングリコールモノメチルエーテルアセテート、ジプロピレングリコールモノエチルエーテルアセテート、3-メトキシブタノールアセテート、テトラヒドロフルフリルアセテート、及びシクロヘキサノールアセテートから選択される少なくとも1種を含む(1)に記載の有機トランジスタ製造用溶剤又は溶剤組成物。
(3) 有機半導体材料が、前記式(1)で表される化合物(1)、及び前記式(2-a)~(2-d)で表される繰り返し単位を1種又は2種以上有する化合物(2)から選択される少なくとも1種の化合物である(1)又は(2)に記載の有機トランジスタ製造用溶剤又は溶剤組成物。
(4) 有機半導体材料と、(1)又は(2)に記載の有機トランジスタ製造用溶剤又は(5) 有機半導体材料が、前記式(1)で表される化合物(1)、及び前記式(2-a)~(2-d)で表される繰り返し単位を1種又は2種以上有する化合物(2)から選択される少なくとも1種の化合物である(4)に記載の有機トランジスタ製造用組成物。
そして、本発明の有機トランジスタ製造用組成物は基板上に塗布されると有機半導体材料が自己組織化作用により結晶化して、高い結晶性を有する有機トランジスタが得られる。
本発明の有機トランジスタ製造用溶剤又は溶剤組成物は、有機半導体材料溶解用の溶剤又は溶剤組成物であって、上記式(A)で表される溶剤Aを含むことを特徴とする。
本発明の溶剤Aは上記式(A)で表される。式(A)中、R1はC1-4アルキル基、C1-4アシル基、C5-6シクロアルカン環、C5-6シクロアルケン環、C6-12アリール基、又はこれらが2以上結合してなる基である。R2、R3、R4、R5は同一又は異なって、水素原子、C1-4アルキル基、又はC1-4アシル基である。R6はC1-4アルキル基、又はC1-4アシル基である。R1とR3は互いに結合して隣接する酸素原子及び炭素原子と共に環を形成していてもよい。nは1又は2であり、mは0~2の整数である。
本発明の有機トランジスタ製造用溶剤又は溶剤組成物は、上記溶剤A以外にも、一般的に電子材料用途に使用される溶剤であって、上記溶剤Aと相溶する溶剤(=溶剤B)を併用してもよい。
本発明の有機トランジスタ製造用溶剤又は溶剤組成物は、有機半導体材料溶解用の溶剤又は溶剤組成物である。前記有機半導体材料としては特に限定されないが、本発明においては、前記式(1)で表される化合物(1)、及び式(2-a)~(2-d)で表される繰り返し単位を1種又は2種以上有する化合物(2)から選択される少なくとも1種の化合物が好ましい。これらは1種を単独で又は2種以上を組み合わせて使用することができる。
本発明の有機トランジスタ製造用組成物は、上記有機半導体材料と、上記有機トランジスタ製造用溶剤又は溶剤組成物とを含むことを特徴とする。
有機半導体材料としてジナフト[2,3-b:2’,3’-f]チエノ[3,2-b]チオフェン(DNTT:式(1-1)で表される化合物)(和光純薬工業(株)製)を使用し、有機トランジスタ製造用溶剤としてテトラヒドロフルフリルアセテート(THFFA:(株)ダイセル製)を使用した。
20℃環境下で、有機トランジスタ製造用溶剤中に有機半導体材料を、その濃度が0.08重量%~0.15重量%となる様に分散した。その後、窒素雰囲気、遮光条件下、100℃で6時間程度加熱して有機トランジスタ製造用組成物を得た。得られた有機トランジスタ製造用組成物中の不溶物を目視で確認し、有機半導体材料の溶解性を下記基準で評価した。
評価基準
不溶物が確認されなかった場合:○(溶解)
不溶物が確認された場合:×(不溶解)
表1に示した有機トランジスタ製造用溶剤を使用した以外は実施例1と同様にして有機トランジスタ製造用組成物を調製し、有機半導体材料の溶解性を評価した。
EDGAC:ジエチレングリコールモノエチルエーテルアセテート((株)ダイセル製)
DPMA:ジプロピレングリコールモノメチルエーテルアセテート((株)ダイセル製)
PMNP:プロピレングリコールメチルn-プロピルエーテル((株)ダイセル製)
PMNB:プロピレングリコールメチルn-ブチルエーテル((株)ダイセル製)
DMM:ジプロピレングリコールジメチルエーテル((株)ダイセル製)
DPMNP:ジプロピレングリコールメチルn-プロピルエーテル((株)ダイセル製)
DPMNB:ジプロピレングリコールメチルn-ブチルエーテル((株)ダイセル製)
MBA:3-メトキシブタノールアセテート((株)ダイセル製)
o-DCB:1,2-ジクロロベンゼン(東京化成工業(株)製)
有機半導体材料としてポリ(3-ヘキシルチオフェン-2,5-ジイル)(レジオレギュラー)(P3HT:式(2-1)で表される化合物)を使用し、有機トランジスタ製造用溶剤としてシクロヘキサノールアセテートを使用した。
20℃環境下で、有機トランジスタ製造用溶剤中に有機半導体材料を、その濃度が0.50重量%となる様に分散した。その後、窒素雰囲気、遮光条件下、100℃で6時間程度加熱して有機トランジスタ製造用組成物を得た。
得られた有機トランジスタ製造用組成物に不溶物は確認されなかった。
そして、本発明の有機トランジスタ製造用組成物は基板上に塗布されると有機半導体材料が自己組織化作用により結晶化して、高い結晶性を有する有機トランジスタが得られる。
Claims (5)
- 溶剤Aが、エチレングリコールジメチルエーテル、ジエチレングリコールジメチルエーテル、エチレングリコールモノエチルエーテルアセテート、エチレングリコールモノプロピルエーテルアセテート、エチレングリコールモノブチルエーテルアセテート、ジエチレングリコールモノエチルエーテルアセテート、ジエチレングリコールモノブチルエーテルアセテート、プロピレングリコールジメチルエーテル、プロピレングリコールメチルエチルエーテル、プロピレングリコールメチルプロピルエーテル、プロピレングリコールメチルブチルエーテル、ジプロピレングリコールジメチルエーテル、ジプロピレングリコールメチルエチルエーテル、ジプロピレングリコールメチルプロピルエーテル、ジプロピレングリコールメチルブチルエーテル、プロピレングリコールモノメチルエーテルアセテート、プロピレングリコールモノエチルエーテルアセテート、ジプロピレングリコールモノメチルエーテルアセテート、ジプロピレングリコールモノエチルエーテルアセテート、3-メトキシブタノールアセテート、テトラヒドロフルフリルアセテート、及びシクロヘキサノールアセテートから選択される少なくとも1種を含む請求項1に記載の有機トランジスタ製造用溶剤又は溶剤組成物。
- 有機半導体材料が、下記式(1)
(式中、Arは環式化合物から2個の水素原子を除いた基であり、前記環式化合物は式(A-1)~式(A-5)の何れかで表される化合物である。R’、R”は同一又は異なって、水素原子、置換基を有していてもよいC1-18アルキル基、置換基を有していてもよいフェニル基、置換基を有していてもよいナフチル基、又は置換基を有していてもよいチオフェニル基を示す)
で表される化合物(1)、及び下記式(2-a)~(2-d)
(式中、Rは置換基を有していてもよいC1-24アルキル基、置換基を有していてもよいフェニル基、置換基を有していてもよいナフチル基、又は置換基を有していてもよいチオフェニル基を示す)
で表される繰り返し単位を1種又は2種以上有する化合物(2)から選択される少なくとも1種の化合物である請求項1又は2に記載の有機トランジスタ製造用溶剤又は溶剤組成物。 - 有機半導体材料と、請求項1又は2に記載の有機トランジスタ製造用溶剤又は溶剤組成物とを含む有機トランジスタ製造用組成物。
- 有機半導体材料が、下記式(1)
(式中、Arは環式化合物から2個の水素原子を除いた基であり、前記環式化合物は式(A-1)~式(A-5)の何れかで表される化合物である。R’、R”は同一又は異なって、水素原子、置換基を有していてもよいC1-18アルキル基、置換基を有していてもよいフェニル基、置換基を有していてもよいナフチル基、又は置換基を有していてもよいチオフェニル基を示す)
で表される化合物(1)、及び下記式(2-a)~(2-d)
(式中、Rは置換基を有していてもよいC1-24アルキル基、置換基を有していてもよいフェニル基、置換基を有していてもよいナフチル基、又は置換基を有していてもよいチオフェニル基を示す)
で表される繰り返し単位を1種又は2種以上有する化合物(2)から選択される少なくとも1種の化合物である請求項4に記載の有機トランジスタ製造用組成物。
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| JP2014551987A JP6228129B2 (ja) | 2012-12-12 | 2013-12-02 | 有機トランジスタ製造用溶剤又は溶剤組成物 |
| CN201380064733.5A CN104854719B (zh) | 2012-12-12 | 2013-12-02 | 有机晶体管制造用溶剂或溶剂组合物 |
| DE112013005942.8T DE112013005942T5 (de) | 2012-12-12 | 2013-12-02 | Lösungsmittel oder Lösungsmittelzusammensetzung zur Herstellung organischer Transistoren |
| KR1020157014848A KR102118354B1 (ko) | 2012-12-12 | 2013-12-02 | 유기 트랜지스터 제조용 용제 또는 용제 조성물 |
| US14/651,312 US20150333269A1 (en) | 2012-12-12 | 2013-12-02 | Solvent or solvent composition for manufacturing organic transistor |
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| KR102345789B1 (ko) * | 2016-06-09 | 2022-01-03 | 주식회사 다이셀 | 유기 반도체 디바이스 제조용 조성물 |
| KR102092798B1 (ko) * | 2016-12-28 | 2020-03-24 | 삼성에스디아이 주식회사 | 유기막 제조 방법 및 패턴형성방법 |
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| TW201434797A (zh) | 2014-09-16 |
| KR102118354B1 (ko) | 2020-06-03 |
| JP6228129B2 (ja) | 2017-11-08 |
| US20150333269A1 (en) | 2015-11-19 |
| TWI602798B (zh) | 2017-10-21 |
| DE112013005942T5 (de) | 2015-09-24 |
| CN104854719B (zh) | 2018-11-13 |
| JPWO2014091960A1 (ja) | 2017-01-05 |
| KR20150095647A (ko) | 2015-08-21 |
| CN104854719A (zh) | 2015-08-19 |
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