CN114031975A - Composition, quantum dot ink and quantum dot light-emitting device - Google Patents

Composition, quantum dot ink and quantum dot light-emitting device Download PDF

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CN114031975A
CN114031975A CN202011201307.XA CN202011201307A CN114031975A CN 114031975 A CN114031975 A CN 114031975A CN 202011201307 A CN202011201307 A CN 202011201307A CN 114031975 A CN114031975 A CN 114031975A
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杨曦
庄锦勇
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Guangdong Juhua Printing Display Technology Co Ltd
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Guangdong Juhua Printing Display Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/50—Sympathetic, colour changing or similar inks
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H10K50/115—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising active inorganic nanostructures, e.g. luminescent quantum dots

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Abstract

The invention relates to a composition, quantum dot ink and a quantum dot light-emitting device, wherein the composition comprises a quantum dot material and a boron-containing compound with a structure shown in a formula (I);
Figure DDA0002755237480000011
the composition has excellent charge transmission capability, and the viscosity and surface tension requirements of the quantum dot ink can be met by reasonably adjusting the concentration of each component of the composition.

Description

Composition, quantum dot ink and quantum dot light-emitting device
Technical Field
The invention relates to the technical field of photoelectric materials, in particular to a composition, quantum dot ink and a quantum dot light-emitting device.
Background
At present, an Organic Light Emitting Diode (OLED) as a new generation display technology is manufactured by an evaporation method, a large number of vacuum processes are involved in the manufacturing process, the material utilization rate is low, a fine mask (FMM) is required, the cost is high, and the yield is low. In order to solve the above problems, attention is being paid to a technology for realizing high-resolution full-color display by using a printing process. For example, the ink-jet printing can prepare the functional material film in a large area and at low cost, and compared with the traditional semiconductor production process, the ink-jet printing has the advantages of low energy consumption, low water consumption, environmental friendliness and great advantages and potentials. Another new display technology, quantum dot light emitting diodes (QLEDs), cannot be vapor deposited and must be prepared by printing. Therefore, the key problems of printing ink and related printing process must be broken through to realize printing display. While viscosity and surface tension are important parameters affecting printing inks and printing processes, a promising printing ink needs to have an appropriate viscosity and surface tension.
Organic semiconducting materials have gained widespread interest and significant progress in their application in electronic and optoelectronic devices due to their solution processability. Solution processability allows organic functional materials to be formed into thin films of the functional material in devices by certain coating and printing techniques. The technology can effectively reduce the processing cost of electronic and optoelectronic devices and meet the process requirement of large-area preparation. At present, several companies have reported organic semiconductor material inks for printing, such as: KATEEVA, INC discloses an organic small molecule material ink based on ester solvents for printable OLEDs; UNIVERSAL DISPLAY CORPORATION discloses a printable ink of organic small molecule materials based on solvents of aromatic ketones or aromatic ethers; SEIKO EPSON CORPORATION discloses printable organic polymeric material inks based on substituted benzene derivative solvents.
Another class of functional materials that may be suitable for printing are inorganic nanomaterials, in particular quantum dots. Quantum dots are semiconductor materials of nanometer size having quantum confinement effect, and when stimulated by light or electricity, the quantum dots emit fluorescence with specific energy, and the color (energy) of the fluorescence is determined by the chemical composition and size and shape of the quantum dots. Therefore, the control on the size and the shape of the quantum dot can effectively regulate and control the electrical and optical properties of the quantum dot. At present, all countries research the application of quantum dots in full color, and mainly focus on the display field. Recently, the electroluminescent device (QLED) using quantum dots as the light emitting layer has been rapidly developed, and the device lifetime has been greatly improved, as reported by Peng et al in Nature Vol 51596 (2015), and Qian et al in Nature Photonics Vol 9259 (2015). Currently, several companies have reported quantum dot inks for printing: british nanotechnology Ltd (Nanoco Technologies Ltd) discloses a method of preparing a printable ink formulation comprising nanoparticles. By selecting proper solvents, such as toluene and dodecaneselenol, printable nanoparticle ink and a corresponding nanoparticle-containing film are obtained; samsung Electronics (Samsung Electronics) discloses a quantum dot ink for inkjet printing. The ink comprises a certain concentration of quantum dot material, an organic solvent and an alcohol polymer additive with high viscosity. Printing the ink to obtain a quantum dot film and prepare a quantum dot electroluminescent device; QD Vision (QD Vision, Inc.) discloses an ink formulation of quantum dots comprising a host material, a quantum dot material, and an additive (US2010264371a 1).
Other patents relating to quantum dot printing inks include: US2008277626a1, US2015079720a1, US2015075397a1, TW201340370A, US2007225402a1, US2008169753a1, US2010265307a1, US2015101665a1, WO2008105792a 2. In these published patents, the quantum dot inks contain other additives, such as alcohol polymers, in order to control the physical parameters of the inks. The introduction of polymer additives with insulating properties tends to reduce the charge transport capability of the thin film, which has a negative impact on the optoelectronic properties of the device, limiting its wide application in optoelectronic devices.
Disclosure of Invention
Based on the above, there is a need for a composition, a quantum dot ink and an application thereof in a quantum dot light emitting device, wherein the composition has excellent charge transport capability, and the viscosity and surface tension requirements of the quantum dot ink can be met by reasonably adjusting the concentrations of the components of the composition.
A composition comprising a quantum dot material and a boron-containing compound of the structure shown in formula (I);
Figure BDA0002755237460000031
wherein Ar is1～Ar5At each occurrence, identical or different, Ar1～Ar5Each independently selected from: a substituted or unsubstituted aryl group having 5 to 20 ring atoms, a substituted or unsubstituted heteroaryl group having 5 to 20 ring atoms, or a substituted or unsubstituted non-aromatic group having 5 to 20 ring atoms;
and Ar is2With said Ar5Connected or not connected, Ar3With said Ar4Connected or not connected.
A quantum dot ink comprises the composition and an organic solvent.
A quantum dot light-emitting device comprises a functional layer, wherein the functional layer is mainly prepared from the quantum dot ink.
The composition is beneficial to forming excitons on the boron-containing compound by electrons and holes after a luminescent layer is formed by adopting the boron-containing compound and quantum dot material composition with the structure shown in the formula (I), and then transferring the energy of the excitons to the quantum dots for luminescence, thereby achieving the purpose of improving the charge transmission capability; the boron-containing compound and quantum dot material composition of the composition has proper solubility in most of organic solvents for ink-jet printing, and the adjustment of the viscosity and the surface tension of the quantum dot ink can be realized by adjusting the concentrations of the boron-containing compound and the quantum dot material composition in the printing ink, so that the requirement of ink-jet printing is met, the reduction of charge transmission capability caused by additives such as alcohol polymers is avoided, and the luminous efficiency of a quantum dot light-emitting device is further improved.
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Fig. 1 is a schematic view of a quantum dot light emitting device according to an embodiment of the present invention.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the present invention, "substituted" means that a hydrogen atom in a substituent is substituted by a substituent.
In the present invention, "substituted or unsubstituted" means that the defined group may or may not be substituted. When a defined group is substituted, it is understood to be optionally substituted with art-acceptable groups including, but not limited to: c1-30Alkyl, heterocyclyl containing 3 to 20 ring atoms, aryl containing 5 to 20 ring atoms, heteroaryl containing 5 to 20 ring atoms, silyl, carbonyl, alkoxycarbonyl, aryloxycarbonyl, carbamoyl, haloformyl, formyl, -NRR', cyano, isocyano, isocyanate, thiocyanate, isothiocyanate, hydroxy, trifluoromethyl, nitro or halogen, and the above groups may be further substituted with art-acceptable substituents; it is understood that R and R 'in-NRR' are each independently substituted with art-acceptable groups including, but not limited to, H, C1-6An alkyl group, a cycloalkyl group having 3 to 8 ring atoms, a heterocyclic group having 3 to 8 ring atoms, an aryl group having 5 to 20 ring atoms or a heteroaryl group having 5 to 10 ring atoms; said C is1-6Alkyl, cycloalkyl containing 3 to 8 ring atoms, heterocyclyl containing 3 to 8 ring atoms, aryl containing 5 to 20 ring atoms or heteroaryl containing 5 to 10 ring atoms are optionally further substituted by one or more of the following: c1-6Alkyl, cycloalkyl having 3 to 8 ring atoms, heterocyclyl having 3 to 8 ring atoms, halogen, hydroxy, nitro or amino.
In the present invention, the "number of ring atoms" represents the number of atoms among atoms constituting the ring itself of a structural compound (for example, a monocyclic compound, a condensed ring compound, a crosslinked compound, a carbocyclic compound, and a heterocyclic compound) in which atoms are bonded in a ring shape. When the ring is substituted with a substituent, the atoms contained in the substituent are not included in the ring-forming atoms. The "number of ring atoms" described below is the same unless otherwise specified. For example, the number of ring atoms of the benzene ring is 6, the number of ring atoms of the naphthalene ring is 10, and the number of ring atoms of the thienyl group is 5.
In the present invention, "alkyl" may mean a linear, branched and/or cyclic alkyl group. In the present invention, the alkyl group having no specified carbon number means that an optional number may be provided, and the carbon number of the alkyl group may be 1 to 50; further, the carbon number of the alkyl group may be 1 to 30; further, the carbon number of the alkyl group may be 1 to 20; further, the carbon number of the alkyl group may be 1 to 10; further, the carbon number of the alkyl group may be 1 to 6; further, the carbon number of the alkyl group may be 1 to 4. Phrases containing the term, e.g., "C1～C9Alkyl "refers to an alkyl group containing 1 to 9 carbon atoms, which may be independently at each occurrence C1Alkyl radical, C2Alkyl radical, C3Alkyl radical, C4Alkyl radical, C5Alkyl radical, C6Alkyl radical, C7Alkyl radical, C8Alkyl or C9An alkyl group. Non-limiting examples of alkyl groups include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, isobutyl, 2-ethylbutyl, 3-dimethylbutyl, n-pentyl, isopentyl, neopentyl, tert-pentyl, cyclopentyl, 1-methylpentyl, 3-methylpentyl, 2-ethylpentyl, 4-methyl-2-pentyl, n-hexyl, 1-methylhexyl, 2-ethylhexyl, 2-butylhexyl, cyclohexyl, 4-methylcyclohexyl, 4-tert-butylcyclohexyl, n-heptyl, 1-methylheptyl, 2-dimethylheptyl, 2-ethylheptyl, 2-butylheptyl, n-octyl, tert-octyl, 2-ethyloctyl, 2-butyloctyl, 2-hexyloctyl, tert-butyl, 2-isobutyl, 2-ethylbutyl, 3-dimethylbutyl, 2-methylhexyl, 2-ethylhexyl, 2-butylhexyl, cyclohexyl, 4-butylcyclohexyl, 2-butylheptyl, 2-methylheptyl, 2-ethylheptyl, 2-ethyloctyl, 2-tert-butylhexyl, 2-butylhexyl, or a, 3, 7-dimethyloctyl, cyclooctyl, n-nonyl, n-decyl, adamantyl, 2-ethyldecyl, 2-butyldecyl, 2-hexyldecyl, 2-octyldecyl, n-undecyl, n-dodecyl, 2-ethyldodecyl, 2-butyldodecyl, 2-hexyldodecyl, 2-octyldodecyl, n-tridecyl, n-tetradecyl, n-pentadecylA base group, a n-hexadecyl group, a 2-ethylhexadecyl group, a 2-butylhexadecyl group, a 2-hexylhexadecyl group, a 2-octylhexadecyl group, a n-heptadecyl group, a n-octadecyl group, a n-nonadecyl group, a n-eicosyl group, a 2-ethyleicosyl group, a 2-butyleicosyl group, a 2-hexyleicosyl group, a 2-octyleicosyl group, a n-heneicosyl group, a n-docosyl group, a n-tricosyl group, a n-tetracosyl group, a n-pentacosyl group, a n-hexacosyl group, a n-heptacosyl group, a n-octacosyl group, a n-nonacosyl group, a n-triacontyl group, adamantane group and the like.
"Heterocycloalkyl" means a saturated or partially unsaturated monocyclic or polycyclic cyclic hydrocarbon substituent in which one or more ring atoms are selected from nitrogen, oxygen, or S (O)m(wherein m is an integer of 0 to 2), preferably a nitrogen or oxygen heteroatom; but not the ring moiety of-O-, -O-S-or-S-, the remaining ring atoms being carbon. 3-10 membered heterocyclyl is a ring containing 3 to 10 ring atoms, of which 1-3 are heteroatoms; preferably, the heterocyclyl ring contains from 3 to 8 ring atoms of which 1-2 are heteroatoms. In one embodiment, the monocyclic heterocyclyl is dihydrofuranyl, tetrahydrofuranyl, pyrrolidinyl, piperidinyl, piperazinyl, morpholinyl, thiomorpholinyl, or homopiperazinyl, and the like.
As used herein, "fused ring" refers to polycyclic groups in which each ring in the system shares an adjacent pair of carbon atoms with other rings in the system, such as naphthyl, anthryl, phenanthryl, and the like. Fused rings optionally contain 0 or more heteroatoms, i.e., fused rings may or may not contain heteroatoms.
The term "alkoxy" refers to a group having an-O-alkyl group, i.e., an alkyl group as defined above attached to the parent core structure via an oxygen atom. Phrases encompassing this term, suitable examples include, but are not limited to: methoxy (-O-CH)3or-OMe), ethoxy (-O-CH)2CH3or-OEt) and tert-butoxy (-O-C (CH)3)3or-OtBu).
"aryl" refers to an aromatic hydrocarbon group derived by removing one hydrogen atom from the aromatic ring compound and may be a monocyclic aryl group, or a fused ring aryl group, or a polycyclic aryl group, at least one of which is an aromatic ring system for polycyclic ring species. For example, "substituted or unsubstituted aryl having 5 to 60 ring atoms" means an aryl group containing 5 to 60 ring atoms, and the aryl group is optionally further substituted; suitable examples include, but are not limited to: benzene, biphenyl, naphthalene, anthracene, phenanthrene, perylene, triphenylene, and derivatives thereof. It will be appreciated that a plurality of aryl groups may also be interrupted by short non-aromatic units (e.g. < 10% of non-H atoms, such as C, N or O atoms), such as in particular acenaphthene, fluorene, or 9, 9-diarylfluorene, triarylamine, diarylether systems should also be included in the definition of aryl groups.
"heteroaryl" means that on the basis of an aryl at least one carbon atom is replaced by a non-carbon atom which may be a N atom, an O atom, an S atom, etc. For example, "substituted or unsubstituted heteroaryl having 5 to 60 ring atoms" refers to heteroaryl having 5 to 60 ring atoms, and the heteroaryl is optionally further substituted, suitable examples include, but are not limited to: furan, benzofuran, thiophene, benzothiophene, pyrrole, pyrazole, triazole, imidazole, oxazole, oxadiazole, thiazole, tetrazole, indole, carbazole, pyrroloimidazole, pyrrolopyrrole, thienopyrrole, thienothiophene, furopyrrole, furofuran, thienofuran, benzisoxazole, benzisothiazole, benzimidazole, pyridine, pyrazine, pyridazine, pyrimidine, triazine, quinoline, isoquinoline, phthalazine, quinoxaline, phenanthridine, primadine, quinazoline, and quinazolinone.
In the present invention, m-membered aryl means aryl group containing m ring atoms, m-membered heteroaryl means heteroaryl group containing m ring atoms, for example: "5-10 membered aryl" refers to aryl groups containing 5-10 ring atoms, and "5-10 membered heteroaryl" refers to heteroaryl groups containing 5-10 ring atoms.
"amino" refers to a derivative of an amine having the formula-N (X)2Wherein each "X" is independently H, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocyclyl, or the like. Non-limiting types of amine groups include-NH2-N (alkyl)2NH (alkyl), -N (cycloalkyl)2NH (cycloalkyl), -N (heterocyclyl)2-NH (heterocycle)Radical), -N (aryl)2NH (aryl), -N (alkyl) (heterocyclyl), -N (cycloalkyl) (heterocyclyl), -N (aryl) (heteroaryl), -N (alkyl) (heteroaryl), and the like.
"halogen" or "halo" refers to F, Cl, Br, or I.
"alkylamino" refers to an amino group substituted with at least one alkyl group. Suitable examples include, but are not limited to: -NH2、-NH(CH3)、-N(CH3)2、-NH(CH2CH3)、-N(CH2CH3)2。
"arylalkyl" refers to a hydrocarbyl radical derived from an alkyl radical having at least one hydrogen atom bonded to a carbon atom replaced by an aryl radical. Wherein the aryl moiety may include 5 to 20 carbon atoms and the alkyl moiety may include 1 to 9 carbon atoms. Suitable examples include, but are not limited to: benzyl, 2-phenyleth-1-yl, naphthylmethyl, 2-naphthyleth-1-yl, naphthobenzyl and 2-naphthophenyleth-1-yl.
In the present invention, "+" attached to a single bond represents a connection or a fusion site;
in the present invention, when the attachment site is not specified in the group, it means that an optional attachment site in the group is used as the attachment site;
in the present invention, when a fused site is not specified in a group, it means that an optionally fused site in the group is a fused site, and preferably two or more sites in the ortho-position in the group are fused sites;
in the context of the present invention, an atom in a group at the attachment site or the fused site also satisfies the valence of the atom, e.g.
Figure BDA0002755237460000081
When the atom as the linking site in (1) is a tetravalent atom, no other substituent is present thereon;
in the context of the present invention, a single bond to which a substituent is attached extends through the corresponding ring, meaning that the substituent may be attached at an optional position on the ring, for example
Figure BDA0002755237460000082
Wherein R is represented byAny substitutable site of the pyridine ring is linked.
In the present invention, when the same group contains a plurality of substituents of the same symbol, the substituents may be the same or different from each other, for example
Figure BDA0002755237460000083
6R on the benzene ring1May be the same as or different from each other.
In the present invention, when the specific number of substituents is not specified, the substituents are represented by optionally substitutable numbers, such as R0Substituted phenyl, said phenyl being optionally substituted by 1,2,3 or 4, etc. R0And (4) substitution.
Detailed Description
One embodiment of the invention provides a composition comprising a quantum dot material and a boron-containing compound having a structure represented by formula (I);
Figure BDA0002755237460000084
wherein Ar is1～Ar5At each occurrence, identical or different, Ar1～Ar5Each independently selected from: a substituted or unsubstituted aryl group having 5 to 20 ring atoms, a substituted or unsubstituted heteroaryl group having 5 to 20 ring atoms, or a substituted or unsubstituted non-aromatic group having 5 to 20 ring atoms; and Ar2And Ar5Connected or disconnected, Ar3And Ar4Connected or not connected.
Further, Ar1～Ar5Each independently selected from: a substituted or unsubstituted aryl group having 5 to 15 ring atoms, a substituted or unsubstituted heteroaryl group having 5 to 15 ring atoms, or a substituted or unsubstituted non-aromatic group having 5 to 15 ring atoms;
further, Ar1～Ar5Each independently selected from: a substituted or unsubstituted aryl group having 5 to 10 ring atoms, a substituted or unsubstituted heteroaryl group having 5 to 10 ring atoms, or a substituted or unsubstituted non-aromatic group having 5 to 10 ring atoms;
further, Ar1～Ar5Each independently selected from: substituted or unsubstituted phenyl, or substituted or unsubstituted naphthyl;
further, Ar1～Ar5Each independently selected from: aryl having 5 to 10 ring atoms, heteroaryl having 5 to 10 ring atoms, R1Substituted aryl having 5 to 10 ring atoms, or R1Substituted heteroaryl having 5 to 10 ring atoms;
further, Ar1～Ar5Each independently selected from: phenyl, naphthyl, R1Substituted phenyl or R1Substituted naphthyl;
wherein R is1At each occurrence, the same or different, R1Selected from: H. d, F, Cl, Br, I, CN, NO2、CF3、B(OR2)2,Si(R2)3A linear alkane having 1 to 20 carbon atoms, a branched alkane having 3 to 20 carbon atoms, a cycloalkane having 3 to 20 carbon atoms, an alkane ether having 1 to 20 carbon atoms, an alkane thioether having 1 to 20 carbon atoms, or an alkane ether group having 3 to 20 ring atoms;
R2at each occurrence, the same or different, R2Selected from: H. d, a linear alkyl group having 1 to 20C atoms, an alkoxy group having 1 to 20C atoms, a thioalkoxy group having 1 to 20C atoms, a branched alkyl group having 3 to 20C atoms, a cyclic alkyl group having 3 to 20C atoms, an alkoxy group having 1 to 20C atoms, a thioalkoxy group having 1 to 20C atoms, a silyl group, a substituted keto group having 1 to 20C atoms, an alkoxycarbonyl group having 2 to 20C atoms, an aryloxycarbonyl group having 7 to 20C atoms, a cyano group, a carbamoyl group, a haloformyl group, a formyl group, an isocyano group, an isocyanate group, a thiocyanate group, an isothiocyanate group, a hydroxyl group, a nitro group, CF, a CF group, an isocyano group, an isocyanato group, a hydroxyl group, a cyano group, a haloformyl group, a formyl group, an isocyanato group, a hydroxyl group, a CF group, a C atom, and a3Cl, Br, F, crosslinkable groups, substituted or unsubstituted aryl groups having 5 to 40 ring atoms, substituted or unsubstituted heteroaryl groups having 5 to 40 ring atomsSubstituted or unsubstituted heteroaryloxy having 5 to 40 ring atoms, or a combination of these systems; wherein R in one or more radicals2Can form a mono-or polycyclic, aliphatic or aromatic ring system with one another, and/or R in one or more radicals2The rings bonded to the radicals form a mono-or polycyclic, aliphatic or aromatic ring system.
Further, R1At each occurrence, the same or different, R1Selected from: H. d, straight-chain alkyl having 1 to 6C atoms, branched-chain alkyl having 3 to 8C atoms, CF3Cl, Br or F;
further, R1At each occurrence, the same or different, R1Selected from: H. methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, isobutyl, 2-ethylbutyl or 3, 3-dimethylbutyl or F;
further, R2At each occurrence, the same or different, R2Selected from: a linear alkyl group having 1 to 6C atoms, a branched alkyl group having 3 to 8C atoms, or a cyclic alkyl group having 3 to 8C atoms;
further, the boron-containing compound has a structure represented by formula (II):
Figure BDA0002755237460000101
wherein, Y1And Y2Each independently is absent or a single bond;
Ar6、Ar7、Ar8and Ar9Each independently is: absent, phenyl or naphthyl;
R21-R24equal to or different from each other, R21-R24At each occurrence, each is independently selected from: H. d, a straight-chain alkyl group having 1 to 20C atoms, an alkoxy group having 1 to 20C atoms, a thioalkoxy group having 1 to 20C atoms, a branched alkyl group having 3 to 20C atoms, a cyclic alkyl group having 3 to 20C atoms, an alkoxy group having 1 to 20C atoms, a salt thereof, a stabilizer, a metal,Thioalkoxy having 1 to 20C atoms, silyl, substituted keto groups having 1 to 20C atoms, alkoxycarbonyl having 2 to 20C atoms, aryloxycarbonyl groups having 7 to 20C atoms, cyano groups, carbamoyl, haloformyl, formyl groups, isocyano, isocyanate, thiocyanate, isothiocyanate, hydroxy, nitro, CF, and the like3Cl, Br, F, a crosslinkable group, a substituted or unsubstituted aryl group having 5 to 40 ring atoms, a substituted or unsubstituted heteroaryl group having 5 to 40 ring atoms, a substituted or unsubstituted aryloxy group having 5 to 40 ring atoms, a substituted or unsubstituted heteroaryloxy group having 5 to 40 ring atoms, or a combination of these systems;
o is 0, 1,2,3,4, 5 or 6; p is 0, 1,2 or 3; q is 0, 1,2,3,4, 5 or 6;
m is 0, 1,2,3,4 or 5; n is 0, 1,2,3,4 or 5.
In one embodiment, Y1And Y2Are all absent; in one embodiment, Y1And Y2Are all single bonds; in one embodiment, Ar6、Ar7、Ar8And Ar9Are all absent; in one embodiment, Ar6、Ar7、Ar8And Ar9Are all phenyl;
further, R21-R24At each occurrence, each is independently selected from: H. d, straight-chain alkyl having 1 to 8C atoms, branched-chain alkyl having 3 to 8C atoms, alkoxy having 1 to 8C atoms, thioalkoxy having 1 to 8C atoms, cyclic alkyl having 3 to 8C atoms, nitro, CF3Cl, B, F, substituted or unsubstituted aryl having 5 to 10 ring atoms, or substituted or unsubstituted heteroaryl having 5 to 10 ring atoms.
Further, R21-R24At each occurrence, each is independently selected from: H. d, a straight-chain alkyl group having 1 to 6C atoms, a branched-chain alkyl group having 3 to 8C atoms, an alkoxy group having 1 to 6C atoms, a thioalkoxy group having 1 to 6C atoms, a branched-chain alkyl group having 3 to 8C atomsC atom cyclic alkyl, nitro, CF3Cl, B, F, substituted or unsubstituted phenyl, or substituted or unsubstituted naphthyl.
Further, R21-R24At each occurrence, each is independently selected from: H. d, straight-chain alkyl having 1 to 6C atoms, branched-chain alkyl having 3 to 8C atoms, CF3Cl, Br or F.
Further, R21-R24At each occurrence, each is independently selected from: H. methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, isobutyl, 2-ethylbutyl or 3, 3-dimethylbutyl or F;
further, R21-R24At each occurrence, each is independently selected from: H. isopropyl or F;
further, the boron-containing compound is selected from the compounds of the following structures:
Figure BDA0002755237460000121
further, the quantum dot material contains at least one material capable of emitting blue light having a peak emission wavelength of 450nm to 460nm, green light having a peak emission wavelength of 520nm to 540nm, red light having a peak emission wavelength of 615nm to 630nm, or a mixture of any two or more thereof. The quantum dots included may be selected from a particular chemical composition, morphology and/or size dimension to achieve light emission at a desired wavelength under electrical stimulation. The narrow particle size distribution of the quantum dots enables the quantum dots to have narrower luminescence spectra. In addition, according to the difference of the adopted chemical composition and structure, the size of the quantum dot needs to be adjusted correspondingly within the size range so as to obtain the luminescent property of the required wavelength.
Further, the luminescent quantum dots are semiconductor nanocrystals. Typically, the semiconductor nanocrystals have a size in the range of about 2 nanometers to about 15 nanometers. In addition, according to the difference of the adopted chemical composition and structure, the size of the quantum dot needs to be adjusted correspondingly within the size range so as to obtain the luminescent property of the required wavelength.
Further, the quantum dot material is selected from: one or more of CdSe, CdS, CdTe, ZnO, ZnSe, ZnS, ZnTe, HgS, HgSe, HgTe, CdZnSe, InAs, InP, InN, GaN, InSb, InAsP, InGaAs, GaAs, GaP, GaSb, AlP, AlN, AlAs, AlSb, CdSeTe and ZnCdSe.
Examples of suitable luminescent quantum dots employing core-shell structures (but not limited to) are:
further, the red light quantum dot material is selected from: CdSe/CdS, CdSe/CdS/ZnS or CdSe/CdSn;
further, the green light quantum dot material is selected from: CdZnSe/CdZnS or CdSe/ZnS;
further, the blue light quantum dot material is selected from: CdS/CdZnS or CdZnS/ZnS.
Further, the mass ratio of the quantum dot material to the boron-containing compound is 1: 0.1-1: 10; further, the mass ratio of the quantum dot material to the boron-containing compound is 1: 1-1: 10; further, the mass ratio of the quantum dot material to the boron-containing compound is 1: 1-1: 8; furthermore, the mass ratio of the quantum dot material to the boron-containing compound is 1: 1-1: 7; furthermore, the mass ratio of the quantum dot material to the boron-containing compound is 1: 1-1: 6; furthermore, the mass ratio of the quantum dot material to the boron-containing compound is 1: 1-1: 5; furthermore, the mass ratio of the quantum dot material to the boron-containing compound is 1: 1-1: 4; furthermore, the mass ratio of the quantum dot material to the boron-containing compound is 1: 1-1: 3; furthermore, the mass ratio of the quantum dot material to the boron-containing compound is 1: 1-1: 3; 1: 1-1: 2;
the invention also provides quantum dot ink which comprises the composition and an organic solvent.
Further, in the quantum dot ink, the mass percentage of the composition is 0.2-20%, and the mass percentage of the organic solvent is 80-99.8%.
Further, in the quantum dot ink, the mass percentage of the composition is 0.5-10%, and the mass percentage of the organic solvent is 90-99.5%.
Further, the surface tension of the quantum dot ink at the working temperature or at 25 ℃ is about 19dyne/cm to 50 dyne/cm; further, the surface tension of the quantum dot ink at the working temperature or at 25 ℃ is about 22dyne/cm to 35 dyne/cm; further, the surface tension of the quantum dot ink at the operating temperature or at 25 ℃ is in a range of about 25dyne/cm to 33 dyne/cm.
Further, the viscosity of the above quantum dot ink is in the range of 1cPs to 100cPs at the operating temperature or at 25 ℃. Further, the viscosity of the above quantum dot ink is in the range of 1 to 50cPs at the working temperature or at 25 ℃; further, the viscosity of the above quantum dot ink is in the range of 1.5cPs to 30cPs at the working temperature or at 25 ℃; further, the viscosity of the quantum dot ink is in the range of 4 to 20cPs at the working temperature or at 25 ℃; further, the viscosity of the quantum dot ink is in the range of 4 to 10cPs at the working temperature or at 25 ℃; further, the viscosity of the quantum dot ink is in the range of 5 to 8cPs at the working temperature or at 25 ℃;
it should be noted that the viscosity can also be adjusted by the concentration of the composition in the dot ink, in particular the boron-containing compound in the composition.
Further, the organic solvent in the quantum dot ink is selected from: one or more of an aromatic solvent, a heteroaromatic solvent, an aromatic ketone solvent, an aromatic ether solvent, an aliphatic ketone solvent, an aliphatic ether solvent, an alicyclic solvent, an olefinic solvent, and an inorganic ester solvent.
Further, the aromatic solvent is selected from: p-diisopropylbenzene, pentylbenzene, tetrahydronaphthalene, cyclohexylbenzene, chloronaphthalene, 1, 4-dimethylnaphthalene, 3-isopropylbiphenyl, p-methylisopropylbenzene, dipentylbenzene, o-diethylbenzene, m-diethylbenzene, p-diethylbenzene, 1,2,3, 4-tetramethylbenzene, 1,2,3, 5-tetramethylbenzene, 1,2,4, 5-tetramethylbenzene, butylbenzene, dodecylbenzene, 1-methylnaphthalene, 1,2, 4-trichlorobenzene, 1, 3-dipropoxybenzene, 4-difluorodiphenylmethane, 1, 2-dimethoxy-4- (1-propenyl) benzene, diphenylmethane, N-methyldiphenylamine, 4-isopropylbiphenyl, alpha-dichlorodiphenylmethane, benzyl benzoate, 1-bis (3, 4-dimethylphenyl) ethane, 2-isopropylnaphthalene, dibenzyl ether or 2-isopropylnaphthalene;
further, the heteroaromatic solvent is selected from: 2-phenylpyridine, 3-phenylpyridine, 4- (3-phenylpropyl) pyridine, quinoline, isoquinoline, 8-hydroxyquinoline, methyl 2-furancarboxylate or ethyl 2-furancarboxylate;
further, the aromatic ketone solvent is selected from: 1-tetralone, 2-tetralone, acetophenone, propiophenone, or benzophenone, each of said 1-tetralone or 2-tetralone independently optionally substituted with an aliphatic, aryl, heteroaryl, or halogen substituent; each of said acetophenone, propiophenone or benzophenone is independently optionally substituted with methyl;
further, the aromatic ether solvent is selected from: 3-phenoxytoluene, butoxybenzene, benzylbutylbenzene, p-anisaldehyde dimethylacetal, tetrahydro-2-phenoxy-2H-pyran, 1, 2-dimethoxy-4- (1-propenyl) benzene, 1, 4-benzodioxane, 1, 3-dipropylbenzene, 2, 5-dimethoxytoluene, 4-ethylbenylether, 1,2, 4-trimethoxybenzene, 4- (1-propenyl) -1, 2-dimethoxybenzene, 1, 3-dimethoxybenzene, glycidyl phenyl ether, dibenzyl ether, 4-tert-butyl anisole, trans-p-propenyl anisole, 1, 2-dimethoxybenzene, 1-methoxynaphthalene, diphenyl ether, 2-phenoxymethyl ether, 2-phenoxytetrahydrofuran or ethyl-2-naphthyl ether;
further, the ester solvent is selected from: alkyl octanoates, alkyl sebacates, alkyl stearates, alkyl benzoates, alkyl phenylacetates, alkyl cinnamates, alkyl oxalates, alkyl maleates, alkyl lactones, or alkyl oleates;
further, the alicyclic solvent is selected from: tetrahydronaphthalene, cyclohexylbenzene, decalin, 2-phenoxytetrahydrofuran, 1' -bicyclohexane, butylcyclohexane, ethyl abietate, benzyl abietate, ethylene glycol carbonate, styrene oxide, isophorone, 3, 5-trimethylcyclohexanone, cycloheptanone, fenchyne, 1-tetralone, 2- (phenylepoxy) tetralone, 6- (methoxy) tetralone, γ -butyrolactone, γ -valerolactone, 6-caprolactone, N-diethylcyclohexylamine, sulfolane or 2, 4-dimethylsulfolane;
further, the aliphatic ketone solvent is selected from: 2-nonanone, 3-nonanone, 5-nonanone, 2-decanone, 2, 5-hexanedione, di-n-amyl ketone, phorone, isophorone, 2,6, 8-trimethyl-4-nonanone, camphor or fenchone;
further, the aliphatic ether solvent is selected from: amyl ether, hexyl ether, dioctyl ether, ethylene glycol dibutyl ether, diethylene glycol diethyl ether, diethylene glycol butyl methyl ether, diethylene glycol dibutyl ether, triethylene glycol dimethyl ether, triethylene glycol ethyl methyl ether, triethylene glycol butyl methyl ether, tripropylene glycol dimethyl ether or tetraethylene glycol dimethyl ether;
further, the inorganic ester solvent is selected from: tributyl borate, tripentyl borate, trimethyl phosphate, triethyl phosphate, tributyl phosphate, tris (2-ethylhexyl) phosphate, triphenyl phosphate, diethyl phosphate, dibutyl phosphate, or di (2-ethylhexyl) phosphate.
Further, the quantum dot ink may further include an organic functional material. Organic functional materials include, but are not limited to: any of a Hole Injection Material (HIM), a Hole Transport Material (HTM), an Electron Transport Material (ETM), an Electron Injection Material (EIM), an Electron Blocking Material (EBM), a Hole Blocking Material (HBM), or the like, or a mixture of any two or more thereof, may be used in the quantum dot ink of the present invention.
The invention also relates to a preparation method of the quantum dot ink, which comprises the following steps: mixing the composition and the organic solvent uniformly; further, the mixing temperature is 40-80 ℃; further, the mixing temperature is 50-70 ℃;
the invention also relates to a functional layer prepared from the quantum dot ink; further, the functional layer is a light emitting layer;
the invention also relates to a preparation method of the functional layer, the quantum dot ink is printed or coated on a preset area by a printing or coating method, wherein the printing or coating method can be selected from (but is not limited to): ink jet Printing, spray Printing (Nozzle Printing), letterpress Printing, screen Printing, dip coating, spin coating, doctor blade coating, roll Printing, twist roll Printing, lithographic Printing, flexographic Printing, rotary Printing, spray coating, brush coating, pad Printing, slot die coating, and the like.
The invention also relates to a quantum dot light-emitting device, which comprises the functional layer, and further comprises but is not limited to: quantum dot light emitting diodes (QLEDs), quantum dot photovoltaic cells (QPV), quantum dot photovoltaic cells (QLEECs), quantum dot field effect tubes (QFETs), quantum dot light field effect tubes, quantum dot lasers, quantum dot sensors, and the like.
Further, as illustrated in fig. 1, the quantum dot light-emitting device includes a light-emitting layer 104, and the light-emitting layer 104 is mainly prepared from the quantum dot ink described above; further, the quantum dot light emitting device further includes an anode 102, a Hole Injection Layer (HIL) or a Hole Transport Layer (HTL)103, an Electron Injection Layer (EIL) or an Electron Transport Layer (ETL)105, and a cathode 10, which are sequentially stacked on the substrate 101.
The present invention will be described below with reference to specific examples.
The boron-containing compounds used in the following examples are shown below;
Figure BDA0002755237460000171
preparation of quantum dot ink
A stirrer was placed in the vial, and the vial was washed clean and transferred to a glove box. In a vial was prepared 9.5g of dodecylbenzene. And (4) precipitating the quantum dots from the solution by using acetone, and centrifuging to obtain the quantum dot solid. 0.1g of the quantum dot solid and 0.4g of the boron containing compound were weighed into the solvent system in a vial and mixed with stirring in a glove box. Stirring at 60 deg.C until the quantum dots and boron-containing compound are completely dispersed and dissolved, and cooling to room temperature. The resulting solution was filtered through a 0.2um PTFE filter. Sealing and storing.
Wherein, the quantum dot ink 1: comp-1 is matched with blue light quantum dots;
the quantum dot ink 2 is prepared by matching comp-2 with green light quantum dots;
the quantum dot ink is 3: comp-3 matched with red light quantum dots.
Viscosity and surface tension testing
The viscosity of the ink was measured by DV-I Prime Brookfield rheometer; the surface tension of the ink was measured by SITA bubble pressure tensiometer.
Through the test, the viscosity of the ink obtained by the quantum dot ink 1 is 6.2 +/-0.1 cPs, and the surface tension is 29.1 +/-0.1 dyne/cm.
The above tests show that the viscosity of the ink obtained from the quantum dot ink 2 is 6.7 + -0.1 cPs, and the surface tension is 29.5 + -0.1 dyne/cm.
The above tests show that the viscosity of the ink obtained from the quantum dot ink 3 is 7.2 + -0.1 cPs, and the surface tension is 29.6 + -0.1 dyne/cm.
Preparation of quantum dot light-emitting device
The luminescent layer in the quantum dot light-emitting diode is prepared by the quantum dot ink in an ink-jet printing mode, and the method comprises the following specific steps:
the ink was loaded into an ink tank equipped with an inkjet Printer (Dimatix Materials Printer DMP-3000 (Fujifilm)). The waveform, pulse time and voltage of the ejected ink are adjusted to optimize the ink ejection and stabilize the ink ejection range.
The substrate of the device was 0.7mm thick glass sputtered with an Indium Tin Oxide (ITO) electrode pattern. The pixel defining layer is patterned over the ITO to form holes inside for the deposition of printing ink. The HIL/HTL material was then ink-jet printed into the wells and dried at high temperature under vacuum to remove the solvent, resulting in a HIL/HTL film. And then, ink-jet printing the quantum dot ink on the HIL/HTL film, and drying at high temperature in a vacuum environment to remove the solvent to obtain the light-emitting layer film. And then, ink-jet printing the quantum dot ink containing the electron transport performance on the light-emitting layer film, and drying at high temperature in a vacuum environment to remove the solvent to form an Electron Transport Layer (ETL). When an organic electron transport material is used, the ETL may also be formed by vacuum thermal evaporation. Then the Al cathode is formed by vacuum thermal evaporation, and finally the quantum dot light-emitting device is packaged to be prepared.
In summary, the present invention provides a composition comprising a quantum dot material and a boron-containing compound, and a quantum dot light-emitting device prepared by using the ink prepared from the composition has high light-emitting efficiency and long lifetime.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A composition comprising a quantum dot material and a boron-containing compound having a structure according to formula (I);
Figure FDA0002755237450000011
wherein Ar is1～Ar5At each occurrence, identical or different, Ar1～Ar5Each independently selected from: a substituted or unsubstituted aryl group having 5 to 20 ring atoms, a substituted or unsubstituted heteroaryl group having 5 to 20 ring atoms, or a substituted or unsubstituted non-aromatic group having 5 to 20 ring atoms;
and Ar is2With said Ar5Connected or not connected, Ar3With said Ar4Connected or not connected.
2. The composition of claim 1, wherein Ar is Ar1～Ar5Each independently selected from: aryl having 5 to 10 ring atoms, heteroaryl having 5 to 10 ring atoms, R1Substituted aryls having 5 to 10 ring atomsRadical, or R1Substituted heteroaryl having 5 to 10 ring atoms;
wherein R is1At each occurrence, the same or different, R1Selected from: H. d, F, Cl, Br, I, CN, NO2、CF3、B(OR2)2,Si(R2)3A linear alkane having 1 to 20 carbon atoms, a branched alkane having 3 to 20 carbon atoms, a cycloalkane having 3 to 20 carbon atoms, an alkane ether having 1 to 20 carbon atoms, an alkane thioether having 1 to 20 carbon atoms, or an alkane ether group having 3 to 20 ring atoms;
R2at each occurrence, the same or different, R2Selected from: H. d, a linear alkyl group having 1 to 20C atoms, an alkoxy group having 1 to 20C atoms, a thioalkoxy group having 1 to 20C atoms, a branched alkyl group having 3 to 20C atoms, a cyclic alkyl group having 3 to 20C atoms, an alkoxy group having 1 to 20C atoms, a thioalkoxy group having 1 to 20C atoms, a silyl group, a keto group having 1 to 20C atoms, an alkoxycarbonyl group having 2 to 20C atoms, an aryloxycarbonyl group having 7 to 20C atoms, a cyano group, a carbamoyl group, a haloformyl group, a formyl group, an isocyano group, an isocyanate group, a thiocyanate group, an isothiocyanate group, a hydroxyl group, a nitro group, CF, an isocyanate group, a hydroxyl group, a cyano group, a formyl group, an isocyanato group, a thiocyanate group, a hydroxyl group, a CF, a3Cl, Br, F, substituted or unsubstituted aryl having 5 to 40 ring atoms, substituted or unsubstituted heteroaryl having 5 to 40 ring atoms, substituted or unsubstituted aryloxy having 5 to 40 ring atoms, substituted or unsubstituted heteroaryloxy having 5 to 40 ring atoms, or a combination of these systems; wherein R in one or more radicals2Can form a mono-or polycyclic, aliphatic or aromatic ring system with one another, and/or R in one or more radicals2The rings bonded to the radicals form a mono-or polycyclic, aliphatic or aromatic ring system.
3. The composition of claim 1, wherein the boron-containing compound has a structure represented by formula (II):
Figure FDA0002755237450000021
wherein, Y1And Y2Each independently is absent or a single bond;
Ar6、Ar7、Ar8and Ar9Each independently is: absent, phenyl or naphthyl;
R21-R24equal to or different from each other, R21-R24At each occurrence, each is independently selected from: H. d, a linear alkyl group having 1 to 20C atoms, an alkoxy group having 1 to 20C atoms, a thioalkoxy group having 1 to 20C atoms, a branched alkyl group having 3 to 20C atoms, a cyclic alkyl group having 3 to 20C atoms, an alkoxy group having 1 to 20C atoms, a thioalkoxy group having 1 to 20C atoms, a silyl group, a substituted keto group having 1 to 20C atoms, an alkoxycarbonyl group having 2 to 20C atoms, an aryloxycarbonyl group having 7 to 20C atoms, a cyano group, a carbamoyl group, a haloformyl group, a formyl group, an isocyano group, an isocyanate group, a thiocyanate group, an isothiocyanate group, a hydroxyl group, a nitro group, CF, a CF group, an isocyano group, an isocyanato group, a hydroxyl group, a cyano group, a haloformyl group, a formyl group, an isocyanato group, a hydroxyl group, a CF group, a C atom, and a3Cl, Br, F, a crosslinkable group, a substituted or unsubstituted aryl group having 5 to 40 ring atoms, a substituted or unsubstituted heteroaryl group having 5 to 40 ring atoms, a substituted or unsubstituted aryloxy group having 5 to 40 ring atoms, a substituted or unsubstituted heteroaryloxy group having 5 to 40 ring atoms, or a combination of these systems;
o is 0, 1,2,3,4, 5 or 6; p is 0, 1,2 or 3; q is 0, 1,2,3,4, 5 or 6;
m is 0, 1,2,3,4 or 5; n is 0, 1,2,3,4 or 5.
4. The composition of claim 3, wherein R is21-R24Equal to or different from each other, R21-R24At each occurrence, each is independently selected from: H. d, straight-chain alkyl having 1 to 6C atoms, branched-chain alkyl having 3 to 8C atoms, CF3Cl, Br or F.
5. The composition of claim 1, wherein the boron-containing compound is selected from the group consisting of the compounds of the following structures:
Figure FDA0002755237450000031
6. the composition of any one of claims 1-5, wherein the quantum dot material is selected from the group consisting of: one or more of CdSe, CdS, CdTe, ZnO, ZnSe, ZnS, ZnTe, HgS, HgSe, HgTe, CdZnSe, InAs, InP, InN, GaN, InSb, InAsP, InGaAs, GaAs, GaP, GaSb, AlP, AlN, AlAs, AlSb, CdSeTe and ZnCdSe.
7. The composition of any one of claims 1-5, wherein the mass ratio of the quantum dot material to the boron-containing compound is 1:0.1 to 1: 10.
8. A quantum dot ink comprising the composition of claims 1-7 and an organic solvent selected from the group consisting of: one or more of an aromatic solvent, a heteroaromatic solvent, an aromatic ketone solvent, an aromatic ether solvent, an aliphatic ketone solvent, an aliphatic ether solvent, an alicyclic solvent, an olefinic solvent, and an inorganic ester solvent.
9. The quantum dot ink as claimed in claim 8, wherein in the quantum dot ink, the mass percentage of the composition is 0.2-20%, and the mass percentage of the organic solvent is 80-99.8%; and/or
The viscosity of the quantum dot ink at 25 ℃ is 1cPs-100 cPs; and/or
The surface tension of the quantum dot ink at 25 ℃ is 19dyne/cm-50 dyne/cn.
10. A quantum dot light emitting device comprising a functional layer prepared mainly from the quantum dot ink according to any one of claims 8 to 9.
CN202011201307.XA 2020-11-02 2020-11-02 Composition, quantum dot ink and quantum dot light-emitting device Pending CN114031975A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018095397A1 (en) * 2016-11-23 2018-05-31 广州华睿光电材料有限公司 Organic compound containing boron and uses thereof, organic mixture, and organic electronic device
CN110407859A (en) * 2019-07-18 2019-11-05 清华大学 A kind of luminescent material and its organic electroluminescence device using and comprising it
JP2020167389A (en) * 2019-03-29 2020-10-08 住友化学株式会社 Light emitting device and manufacturing method thereof, and composition for light emitting element and manufacturing method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018095397A1 (en) * 2016-11-23 2018-05-31 广州华睿光电材料有限公司 Organic compound containing boron and uses thereof, organic mixture, and organic electronic device
JP2020167389A (en) * 2019-03-29 2020-10-08 住友化学株式会社 Light emitting device and manufacturing method thereof, and composition for light emitting element and manufacturing method thereof
CN110407859A (en) * 2019-07-18 2019-11-05 清华大学 A kind of luminescent material and its organic electroluminescence device using and comprising it

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