CN116940150A - Mixture, composition, film, light-emitting diode and display device - Google Patents
Mixture, composition, film, light-emitting diode and display device Download PDFInfo
- Publication number
- CN116940150A CN116940150A CN202210368919.0A CN202210368919A CN116940150A CN 116940150 A CN116940150 A CN 116940150A CN 202210368919 A CN202210368919 A CN 202210368919A CN 116940150 A CN116940150 A CN 116940150A
- Authority
- CN
- China
- Prior art keywords
- nanoparticles
- mixture
- oxide
- composition
- light emitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 122
- 239000010408 film Substances 0.000 title description 50
- 239000002105 nanoparticle Substances 0.000 claims abstract description 129
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 31
- 229920002678 cellulose Polymers 0.000 claims abstract description 23
- 239000001913 cellulose Substances 0.000 claims abstract description 23
- 229910052751 metal Chemical group 0.000 claims abstract description 11
- 239000002184 metal Chemical group 0.000 claims abstract description 11
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 84
- 239000000463 material Substances 0.000 claims description 47
- 239000011787 zinc oxide Substances 0.000 claims description 42
- 239000002096 quantum dot Substances 0.000 claims description 27
- 239000002904 solvent Substances 0.000 claims description 23
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 21
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 21
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 claims description 21
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 21
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 15
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 15
- 229910044991 metal oxide Inorganic materials 0.000 claims description 14
- 150000004706 metal oxides Chemical class 0.000 claims description 14
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 12
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 12
- 229910001887 tin oxide Inorganic materials 0.000 claims description 12
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 10
- 239000011258 core-shell material Substances 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 239000007983 Tris buffer Substances 0.000 claims description 9
- 229910052741 iridium Inorganic materials 0.000 claims description 9
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 9
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 8
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 8
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 8
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 8
- 229910052738 indium Inorganic materials 0.000 claims description 8
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical group [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 claims description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052787 antimony Inorganic materials 0.000 claims description 4
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 4
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- 229910052733 gallium Inorganic materials 0.000 claims description 4
- PJANXHGTPQOBST-VAWYXSNFSA-N Stilbene Natural products C=1C=CC=CC=1/C=C/C1=CC=CC=C1 PJANXHGTPQOBST-VAWYXSNFSA-N 0.000 claims description 3
- 229910000611 Zinc aluminium Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000002041 carbon nanotube Substances 0.000 claims description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 3
- 125000003983 fluorenyl group Chemical class C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 3
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 3
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 3
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 3
- 150000003220 pyrenes Chemical class 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 235000021286 stilbenes Nutrition 0.000 claims description 3
- 125000004556 carbazol-9-yl group Chemical group C1=CC=CC=2C3=CC=CC=C3N(C12)* 0.000 claims description 2
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 claims description 2
- 125000004429 atom Chemical group 0.000 abstract description 3
- 125000004430 oxygen atom Chemical group O* 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 78
- 238000001035 drying Methods 0.000 description 10
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 9
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 230000005525 hole transport Effects 0.000 description 8
- 238000007641 inkjet printing Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000005456 alcohol based solvent Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000004528 spin coating Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 229910003363 ZnMgO Inorganic materials 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229920000144 PEDOT:PSS Polymers 0.000 description 2
- 229920001167 Poly(triaryl amine) Polymers 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- -1 biaryl anthracene derivative Chemical class 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- DKHNGUNXLDCATP-UHFFFAOYSA-N dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile Chemical compound C12=NC(C#N)=C(C#N)N=C2C2=NC(C#N)=C(C#N)N=C2C2=C1N=C(C#N)C(C#N)=N2 DKHNGUNXLDCATP-UHFFFAOYSA-N 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 description 1
- RKVIAZWOECXCCM-UHFFFAOYSA-N 2-carbazol-9-yl-n,n-diphenylaniline Chemical compound C1=CC=CC=C1N(C=1C(=CC=CC=1)N1C2=CC=CC=C2C2=CC=CC=C21)C1=CC=CC=C1 RKVIAZWOECXCCM-UHFFFAOYSA-N 0.000 description 1
- AWXGSYPUMWKTBR-UHFFFAOYSA-N 4-carbazol-9-yl-n,n-bis(4-carbazol-9-ylphenyl)aniline Chemical compound C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(N(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 AWXGSYPUMWKTBR-UHFFFAOYSA-N 0.000 description 1
- YWKKLBATUCJUHI-UHFFFAOYSA-N 4-methyl-n-(4-methylphenyl)-n-phenylaniline Chemical compound C1=CC(C)=CC=C1N(C=1C=CC(C)=CC=1)C1=CC=CC=C1 YWKKLBATUCJUHI-UHFFFAOYSA-N 0.000 description 1
- ZOKIJILZFXPFTO-UHFFFAOYSA-N 4-methyl-n-[4-[1-[4-(4-methyl-n-(4-methylphenyl)anilino)phenyl]cyclohexyl]phenyl]-n-(4-methylphenyl)aniline Chemical compound C1=CC(C)=CC=C1N(C=1C=CC(=CC=1)C1(CCCCC1)C=1C=CC(=CC=1)N(C=1C=CC(C)=CC=1)C=1C=CC(C)=CC=1)C1=CC=C(C)C=C1 ZOKIJILZFXPFTO-UHFFFAOYSA-N 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- JKSIBASBWOCEBD-UHFFFAOYSA-N N,N-bis(4-methoxyphenyl)-9,9'-spirobi[fluorene]-1-amine Chemical compound COc1ccc(cc1)N(c1ccc(OC)cc1)c1cccc2-c3ccccc3C3(c4ccccc4-c4ccccc34)c12 JKSIBASBWOCEBD-UHFFFAOYSA-N 0.000 description 1
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- YERGTYJYQCLVDM-UHFFFAOYSA-N iridium(3+);2-(4-methylphenyl)pyridine Chemical compound [Ir+3].C1=CC(C)=CC=C1C1=CC=CC=N1.C1=CC(C)=CC=C1C1=CC=CC=N1.C1=CC(C)=CC=C1C1=CC=CC=N1 YERGTYJYQCLVDM-UHFFFAOYSA-N 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
Abstract
The application discloses a mixture, which comprises oxide nano particles and hydroxy cellulose. The hydroxy cellulose has better film forming property, so that the mixture has better film forming property. In addition, the hydroxyl cellulose contains hydroxyl, and a stronger coordination bond can be formed between an oxygen atom in the hydroxyl and a metal atom on the surface of the oxide nano particle, so that the hydroxyl cellulose and the oxide nano particle are firmly combined together, the stability and the dispersibility of the oxide nano particle are improved, and the mixture has better stability and dispersibility. In addition, the application also discloses a composition, a film, a light-emitting diode and a display device comprising the mixture.
Description
Technical Field
The application relates to the technical field of display, in particular to a mixture, a composition and a film comprising the mixture, a light-emitting diode comprising the film and a display device comprising the light-emitting diode.
Background
Light emitting diodes that are widely used today are Organic Light Emitting Diodes (OLEDs) and quantum dot light emitting diodes (QLEDs). Conventional OLED and QLED device structures generally include an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and a cathode. Under the action of the electric field, holes generated by the anode and electrons generated by the cathode of the light-emitting device move, are respectively injected into the hole transmission layer and the electron transmission layer and finally migrate to the light-emitting layer, and when the hole transmission layer and the electron transmission layer meet at the light-emitting layer, energy excitons are generated, so that light-emitting molecules are excited to finally generate visible light.
In the existing light emitting diode, especially the quantum dot light emitting diode, the common electron transport layer is mainly formed by ink jet printing of an electron transport material containing metal oxide nano particles, and the electron transport layer has excellent electron transport performance, so that the light emitting diode comprising the electron transport layer has good electron mobility and higher luminous efficiency.
However, the existing electron transport materials have poor stability, are easy to agglomerate, and the solvent in the electron transport materials volatilizes faster in the printing process, so that black spots are easy to form when the film is formed by inkjet printing, and holes are easy to appear in the formed film, so that the uniformity of the formed film is poor, and the luminous efficiency and the service life of the light-emitting diode are further affected.
Disclosure of Invention
In view of the above, the present application provides a mixture with electron transport properties, which aims to solve the problem of poor film formation uniformity of the existing electron transport materials.
Embodiments of the present application are thus achieved, a mixture comprising oxide nanoparticles and hydroxycellulose.
Alternatively, in some embodiments of the application, the mixture consists of the oxide nanoparticles and the hydroxycellulose.
Optionally, in some embodiments of the application, the mass ratio of the oxide nanoparticles to the hydroxycellulose in the mixture is (0.199-30): (0.001-10).
Alternatively, in some embodiments of the application, the oxide nanoparticles are selected from ZnO nanoparticles, tiO 2 Nanoparticles, snO 2 Nanoparticles, ta 2 O 3 Nanoparticles, zrO 2 Nanoparticles, niO nanoparticles, tiLiO nanoparticles, znAlO nanoparticles, znMgO nanoparticles, znBeO nanoparticles, znSnO nanoparticles, znLiO nanoparticles, inSnO nanoparticles, and LiFesCO 3 At least one of the nanoparticles.
Alternatively, in some embodiments of the application, the oxide nanoparticles have an average particle diameter of 3 to 20nm.
Optionally, in some embodiments of the application, the hydroxy cellulose is selected from at least one of hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxypropyl methylcellulose.
Alternatively, in some embodiments of the application, the hydroxycellulose has a molecular weight in the range of 10000 ～ 1000000.
Correspondingly, the embodiment of the application also provides a composition which comprises a solvent and the mixture.
Alternatively, in some embodiments of the present application, the solvent is selected from at least one of methanol, ethanol, propanol, butanol, pentanol, ethylene glycol, triethylene glycol, glycerol, and hexanediol.
Alternatively, in some embodiments of the present application, the oxide nanoparticles are present in the composition in an amount of 0.199 to 30wt%, the hydroxycellulose is present in an amount of 0.001 to 10wt%, and the solvent is present in an amount of 60 to 99.8wt%.
Correspondingly, the embodiment of the application also provides a film, wherein the film comprises the mixture, or the film is prepared from the composition.
Correspondingly, the embodiment of the application also provides a light-emitting diode, which comprises a laminated anode, a light-emitting layer, an electron transport layer and a cathode, wherein the electron transport layer comprises the mixture, or is prepared from the composition, or is the film.
Optionally, in some embodiments of the present application, the anode and the cathode are each independently selected from a doped metal oxide electrode, a composite electrode, a graphene electrode, a carbon nanotube electrode, a metal simple substance electrode, or an alloy electrode, wherein a material of the doped metal oxide electrode is selected from at least one of indium doped tin oxide, fluorine doped tin oxide, antimony doped tin oxide, aluminum doped zinc oxide, gallium doped zinc oxide, indium doped zinc oxide, magnesium doped zinc oxide, and aluminum doped magnesium oxide, and the composite electrode is made of a material selected from the group consisting of indium doped tin oxide, fluorine doped tin oxide, antimony doped tin oxide, aluminum doped zinc oxide, gallium doped zinc oxide, indium doped zinc oxide, magnesium doped zinc oxide, and aluminum doped magnesium oxideThe electrode is selected from AZO/Ag/AZO, AZO/Al/AZO, ITO/Ag/ITO, ITO/Al/ITO, znO/Ag/ZnO, znO/Al/ZnO, tiO 2 /Ag/TiO 2 、TiO 2 /Al/TiO 2 ZnS/Ag/ZnS or ZnS/Al/ZnS, wherein the material of the metal simple substance electrode is at least one selected from Ag, al, au, pt, ca and Ba;
the luminescent layer is an organic luminescent layer or a quantum dot luminescent layer, wherein the material of the organic luminescent layer is selected from at least one of 4,4' -bis (N-carbazole) -1,1' -biphenyl, tris [2- (p-tolyl) pyridine-C2, N) iridium (III), 4' -tris (carbazol-9-yl) triphenylamine, tris [2- (p-tolyl) pyridine-C2, N) iridium, diarylanthracene derivative, stilbene aromatic derivative, pyrene derivative, fluorene derivative, TBPe fluorescent material, TTPX fluorescent material, TBRb fluorescent material and DBP fluorescent material, the material of the quantum dot luminescent layer is selected from at least one of single-structure quantum dots and core-shell structure quantum dots, and the material of the core-shell structure quantum dots and the material of the shell of the core-shell structure quantum dots are selected from CdSe, cdS, cdTe, znSe, znS, cdTe, znTe, cdZnS, cdZnSe, cdZnTe, znSeS, znSeTe, znTeS, cdSeS, cdSeTe, cdTeS, cdZnSeTe, cdZnSTe, inP, inXs, gxP, gxXs, gxSb, xlN, xlP, inXsP, inNP, inNSb, gxXlNP, inXlNP, cuInS 2 、CuInSe 2 AgInS 2 At least one of them.
Correspondingly, the embodiment of the application also provides a display device which comprises the light emitting diode.
The mixture provided by the application comprises the hydroxy cellulose, and the hydroxy cellulose has better film forming property, so that the film forming property of the mixture can be effectively improved, and a more uniform and flat film is prepared. In addition, the hydroxyl cellulose contains hydroxyl, and a stronger coordination bond can be formed between an oxygen atom in the hydroxyl and a metal atom on the surface of the oxide nano particle, so that the hydroxyl cellulose and the oxide nano particle are firmly combined together, the stability and the dispersibility of the oxide nano particle are improved, and the mixture has better stability and dispersibility.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a light emitting diode according to an embodiment of the present application;
FIG. 2 is a schematic diagram of another LED according to an embodiment;
fig. 3 is a schematic structural diagram of another light emitting diode according to an embodiment.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the application.
In the present application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device. In addition, in the description of the present application, the term "comprising" means "including but not limited to". The terms first, second, third and the like are used merely as labels, and do not impose numerical requirements or on the order of construction. The term "plurality" means "two or more".
Various embodiments of the application may exist in a range of forms; it should be understood that the description in a range format is merely for convenience and brevity and should not be construed as a rigid limitation on the scope of the application; it is therefore to be understood that the range description has specifically disclosed all possible sub-ranges and individual values within that range. For example, it should be considered that a description of a range from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2,3, 4,5, and 6, wherever applicable. In addition, whenever a numerical range is referred to herein, it is meant to include any reference number (fractional or integer) within the indicated range.
The embodiment of the application provides a mixture which comprises oxide nano particles and hydroxy cellulose.
In some embodiments, the mixture consists of the oxide nanoparticles and the hydroxycellulose.
The hydroxyl cellulose has better film forming property, and can effectively improve the film forming property of the mixture, so that a more uniform and flat film is prepared.
In addition, the hydroxyl cellulose contains hydroxyl, and a stronger coordination bond can be formed between an oxygen atom in the hydroxyl and a metal atom on the surface of the oxide nano particle, so that the hydroxyl cellulose and the oxide nano particle are firmly combined together, the stability and the dispersibility of the oxide nano particle are improved, and the mixture has better stability and dispersibility.
Further, the hydroxyl cellulose has insulativity but not electron transport property, and the oxide nano particles have electron transport property, so that the electron transport property of the mixture can be adjusted by adjusting the proportion of the hydroxyl cellulose and the oxide nano particles in the mixture, thereby adjusting the electron transport property of a film comprising the mixture, further promoting the electron-hole transport balance of a light emitting diode comprising the film, avoiding the phenomena of low efficiency and rapid attenuation of the light emitting diode caused by excessive electrons or holes in a light emitting layer, and further improving the efficiency and service life of the light emitting diode.
In some embodiments, the mass ratio of the oxide nanoparticles to the hydroxycellulose in the mixture is (0.199-30): (0.001-10). Further, the mass ratio of the oxide nanoparticles to the hydroxycellulose may be (2 to 29.5): (0.01-9.2), or (2.5-29): (0.5 to 9), or (3 to 28.5): (1-8.5), or (5-27): (2-8), or (7.5-25.5): (3-7.5), or (9.5-23.5): (4.5-7), or (10.5-21): (5-6.5), or (15-20): (6-9), or (16.5-19): (7-9.5), or (17-19.6): (7.5-9), or (18-26): (8-10).
In some embodiments, the oxide nanoparticles are metal oxide nanoparticles. The metal oxide nanoparticles may be selected from, but are not limited to, znO nanoparticles, tiO 2 Nanoparticles, snO 2 Nanoparticles, ta 2 O 3 Nanoparticles, zrO 2 At least one of nanoparticles and NiO nanoparticles.
In still other embodiments, the metal oxide nanoparticles are doped with a metal element, in other words, the oxide nanoparticles are doped metal oxide nanoparticles. The doped metal oxide nanoparticles may be selected from, but not limited to, tiLiO nanoparticles, znAlO nanoparticles, znMgO nanoparticles, znBeO nanoparticles, znSnO nanoparticles, znLiO nanoparticles, inSnO nanoparticles, and LiFeSCO 3 At least one of the nanoparticles.
In at least one embodiment, the oxide nanoparticles are selected from at least one of ZnO nanoparticles and ZnMgO nanoparticles.
In some embodiments, the oxide nanoparticles have an average particle size of about 3nm to about 20nm. As used herein, in the case of a single oxide nanoparticle, the "average particle size" refers to the particle size of the oxide nanoparticle.
The hydroxy cellulose may be at least one selected from, but not limited to, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxypropyl methyl cellulose.
In some embodiments, the hydroxycellulose has a molecular weight in the range of 10000 ～ 1000000. In the range, the hydroxyl cellulose can have proper molecular size, which is favorable for forming good coordination between the hydroxyl cellulose and the oxide nano particles, is favorable for forming a film of the mixture, can not cause good coordination between the hydroxyl cellulose and the metal oxide particles if the molecular weight is too high, and can not effectively promote the film forming uniformity of the mixture if the molecular weight is too low.
The hydroxycellulose and the oxide nano particles in the mixture have good compatibility with alcohol solvents, so that the hydroxycellulose and the oxide nano particles are not easy to precipitate out of the solvents, and a homogeneous system is formed. Thus, on one hand, when the mixture is used for preparing the film, the uniform and flat film is prepared; on the other hand, the proportion of the hydroxycellulose and the oxide nanoparticles in the mixture is conducive to adjusting, further, the hydroxycellulose has insulativity but does not have electron transmission performance, and the oxide nanoparticles have electron transmission performance, so that the proportion of the hydroxycellulose and the oxide nanoparticles in the film can be adjusted by adjusting the proportion of the hydroxycellulose and the oxide nanoparticles in the mixture, the electron transmission capacity of the film is further adjusted, the electron-hole transmission balance of the light-emitting diode comprising the film is further promoted, the phenomena of low efficiency and rapid attenuation of the light-emitting diode caused by excessive electrons or holes in the light-emitting layer are avoided, and the efficiency and the service life of the light-emitting diode are improved.
In addition, the hydroxycellulose has good compatibility with the alcohol solvents, so that chain segments of the hydroxycellulose can be stretched (stretched) uniformly in the solvents, more hydroxyl groups which are not clustered are provided, more hydroxyl groups coordinate with metal ions of the oxide nanoparticles, and therefore the solubility of the oxide nanoparticles in the solvents is improved, the range of the alcohol solvents which can be selected in the mixture is larger, and for example, high-boiling-point alcohol solvents (long-chain alcohol solvents) with lower solubility for the oxide nanoparticles can be selected. Further, since the evaporation rate of the high boiling point alcohol solvent is low, the use of the high boiling point alcohol solvent as the solvent in the mixture can make the solvent evaporate slowly during film formation and drying, thereby facilitating the formation of a uniform and flat film layer.
Further, the hydroxycellulose has better film forming property, so that the mixture has better film forming property, and a film prepared from the mixture is uniform and flat, and the formation of a coffee ring during inkjet printing is avoided (more oxide nanoparticles at the edge of an inkjet printing liquid drop and less oxide nanoparticles in the middle of the inkjet printing liquid drop).
The embodiment of the application also provides a composition which comprises a solvent and the mixture.
The solvent may be selected from alcohol solvents. The alcohol solvent may be selected from at least one of methanol, ethanol, propanol, butanol, pentanol, ethylene glycol, triethylene glycol, glycerol, and hexanediol, but is not limited to.
The content of the oxide nano particles in the composition is 0.199-30 wt%, the content of the hydroxy cellulose is 0.001-10 wt%, and the content of the solvent is 60-99.8 wt%.
In some embodiments, the oxide nanoparticles may be present in an amount of 0.3 to 8wt%, or 0.3 to 10wt%, or 0.3 to 12.5wt%, or 0.3 to 15wt%, or 0.3 to 18wt%, or 0.3 to 19.2wt%, or 0.3 to 20wt%, or 0.3 to 22.8wt%, or 0.3 to 25wt%, or 0.3 to 28wt%, or 0.3 to 29wt%, or 1 to 6wt%, or 1 to 9.4wt%, or 1 to 11.8wt%, or 1 to 13.9wt%, or 1 to 16wt%, or 1 to 24wt%, or 1 to 26wt%, or 2 to 25wt%, or 2 to 21wt%, or 2 to 18.7wt%, or 2 to 16.3wt%, or 2 to 11.4wt%, or 2 to 9.6wt%, or 2 to 7.3wt%, or 2 to 5.1wt%, or 5 to 9wt%, or 6 to 28wt%, or 0.3 to 29wt%, or 1 to 6wt%, or 1 to 13.9wt%, or 1 to 16wt%, or 1 to 24wt%, or 1 to 26wt%, or 2 to 25wt%, or 2 to 21.7.7 wt%, or 2 to 18.7wt%, or 2 to 3 to 3.3 wt%, or 2 to 18.3 wt%, or 2 to 9.3 to 9wt%, or 4 to 8.3 to 4wt%, or 4wt% to 8wt%, or 1 to 8.3 to 9wt%.
In some embodiments, the hydroxycellulose is present in an amount of 0.01 to 9wt%, or 0.02 to 8.6wt%, or 0.03 to 8wt%, or 0.1 to 7wt%, or 0.1 to 6.3wt%, or 0.1 to 6wt%, or 0.1 to 5.8wt%, or 0.1 to 5wt%, or 0.1 to 4.3wt%, or 0.1 to 4wt%, or 0.1 to 3.1wt%, or 0.1 to 2.4wt%, or 0.1 to 2wt%, or 1 to 9wt%, or 1 to 8wt%, or 1 to 7wt%, or 1 to 6.5wt%, or 1 to 5.4wt%, or 3 to 7.2wt%, or 4 to 6.5wt%, or 5 to 6.1wt%, or 6 to 8.7wt%, or 7 to 9.3wt%, or 8.5 to 9.5wt%.
In some embodiments, the solvent is present in an amount of 65 to 96wt%, or 67 to 95wt%, or 69 to 93wt%, or 70 to 90wt%, or 74 to 89wt%, or 76.5 to 86.3wt%, or 78 to 85wt%, or 80 to 82wt%, or 80 to 88.9wt%, or 81.5 to 93.5wt%, or 85 to 96wt%.
In some embodiments, the viscosity of the composition is from 0.5 to 50.0 mPa-s at 25 ℃. Within this viscosity range, the composition can be properly released from the nozzles of the inkjet printhead and can also be prevented from clogging when forming a film using the inkjet printing method.
In at least some embodiments, the viscosity of the composition is from 3.0 to 15.0 mPa-s at 25 ℃.
In some embodiments, the composition has a surface tension in the range of 20 to 55mN/m at 25 ℃. Within the surface tension range, the composition can be properly released from the nozzle of the ink jet print head and has better film forming property.
It is understood that the composition may be an ink or ink for inkjet printing.
The embodiment of the application also provides a film, which comprises the mixture or is prepared from the composition.
It is understood that the film may be an electron transport film.
The composition includes the oxide nanoparticles and the hydroxycellulose, which can coordinate with the oxide nanoparticles to collectively form the film.
In some embodiments, the film may be made by the following method: and arranging the composition on a substrate, and removing the solvent through post-treatment to obtain the film.
It is understood that the method of disposing the composition on the substrate may be a solution method. The solution method may be spin coating, printing, inkjet printing, knife coating, printing, dip-coating, dipping, spraying, roll coating, casting, slit coating, bar coating, or the like.
It is understood that the post-treatment may be at least one of heat drying, cool drying, and reduced pressure drying.
In some embodiments, the heat drying may be pulsed or continuous heating, and the temperature of the heating may be 60-180 ℃. Within the range, the solvent can be removed effectively, and the oxide nanoparticles can be prevented from being damaged.
The temperature of the cooling and drying can be 0-20 ℃. Within the range, the solvent can be removed effectively, and the oxide nanoparticles can be prevented from being damaged.
The vacuum degree during the reduced pressure drying is 1×10 -6 Torr to normal pressure. Within the range, the solvent can be removed effectively, and the oxide nanoparticles can be prevented from being damaged.
In some embodiments, the film has a thickness of 10 to 120nm. In at least some embodiments, the film has a thickness of 20 to 80nm.
The thin film comprises the mixture, has a uniform and flat surface, and has good stability and proper electron transmission performance.
Referring to fig. 1, an embodiment of the present application further provides a light emitting diode 100, which includes an anode 10, a light emitting layer 20, an electron transport layer 30, and a cathode 40 sequentially stacked. The electron transport layer 30 comprises the mixture described above, or the electron transport layer 30 is prepared from the composition described above, or the electron transport layer 30 is a film described above.
Referring further to fig. 2, in some embodiments, the light emitting diode 100 further includes a hole transport layer 50 between the anode 10 and the light emitting layer 20. In other words, the light emitting diode 100 includes an anode 10, a hole transport layer 50, a light emitting layer 20, an electron transport layer 30, and a cathode 40, which are sequentially stacked.
Referring further to fig. 3, in some embodiments, the light emitting diode 100 further includes a hole injection layer 60 between the anode 10 and the hole transport layer 50. In other words, the light emitting diode 100 includes an anode 10, a hole injection layer 60, a hole transport layer 50, a light emitting layer 20, an electron transport layer 30, and a cathode 40, which are sequentially stacked.
The anode 10 and the cathode 40 are known in the art as an anode and a cathode for a light emitting diode, and may be, for example, independently selected from, but not limited to, a doped metal oxide electrode, a composite electrode, a graphene electrode, a carbon nanotube electrode, a metal simple electrode, or an alloy electrode, respectively. The material of the doped metal oxide electrode may be selected from at least one of indium doped tin oxide (ITO), fluorine doped tin oxide (FTO), antimony doped tin oxide (ATO), aluminum doped zinc oxide (AZO), gallium doped zinc oxide (GZO), indium doped zinc oxide (IZO), magnesium doped zinc oxide (MZO), and aluminum doped magnesium oxide (AMO), but is not limited thereto. The composite electrode is a composite electrode comprising doped or undoped transparent metal oxide and metal sandwiched therebetween, such as AZO/Ag/AZO, AZO/Al/AZO, ITO/Ag/ITO, ITO/Al/ITO, znO/Ag/ZnO, znO/Al/ZnO, and TiO 2 /Ag/TiO 2 、TiO 2 /Al/TiO 2 ZnS/Ag/ZnS, znS/Al/ZnS, etc. The material of the metal simple substance electrode can be selected from at least one of Ag, al, au, pt, ca and Ba, but is not limited to.
The light emitting layer 20 may be an organic light emitting layer or a quantum dot light emitting layer. When the light emitting layer 20 is an organic light emitting layer, the light emitting diode 100 may be an organic light emitting diode; when the light emitting layer 20 is a quantum dot light emitting layer, the light emitting diode 100 may be a quantum dot light emitting diode.
Material of the organic light-emitting layerThe material is a material known in the art for an organic light emitting layer of a light emitting diode, and may be selected from, for example, but not limited to, CBP: ir (mppy) 3 At least one of (4, 4' -bis (N-carbazole) -1,1' -biphenyl: tris [2- (p-tolyl) pyridine-C2, N) iridium (III)), TCTX: ir (mmpy) (4, 4' -tris (carbazol-9-yl) triphenylamine: tris [2- (p-tolyl) pyridine-C2, N) iridium), a biaryl anthracene derivative, a stilbene aromatic derivative, a pyrene derivative, a fluorene derivative, a blue-emitting TBPe fluorescent material, a green-emitting TTPX fluorescent material, an orange-emitting TBRb fluorescent material, and a red-emitting DBP fluorescent material.
The material of the quantum dot light emitting layer is a quantum dot material known in the art for a quantum dot light emitting layer of a light emitting diode, and for example, may be at least one selected from, but not limited to, single structure quantum dots and core-shell structure quantum dots. The material of the single-structure quantum dot, the material of the core-shell structure quantum dot, and the material of the shell of the core-shell structure quantum dot may be selected from at least one of group II-VI compounds, group III-V compounds, and group I-III-VI compounds, but not limited thereto. By way of example, the group II-VI compound may be selected from, but not limited to, at least one of CdSe, cdS, cdTe, znSe, znS, cdTe, znTe, cdZnS, cdZnSe, cdZnTe, znSeS, znSeTe, znTeS, cdSeS, cdSeTe, cdTeS, cdZnSeTe and CdZnSTe; the III-V compound may be selected from at least one of, but not limited to InP, inXs, gxP, gxXs, gxSb, xlN, xlP, inXsP, inNP, inNSb, gxXlNP and InXLNP; the I-III-VI compound may be selected from, but is not limited to, cuInS 2 、CuInSe 2 AgInS 2 At least one of them.
As an example, the quantum dot of the core-shell structure may be selected from at least one of CdSe/CdSeS/CdS, inP/ZnSeS/ZnS, cdZnSe/ZnSe/ZnS, cdSeS/ZnSeS/ZnS, cdSe/ZnSe/ZnS, znSeTe/ZnS, cdSe/CdZnSeS/ZnS, and InP/ZnSe/ZnS.
The material of the hole transport layer 50 may also be a material known in the art for a hole transport layer, for example, may be selected from, but not limited to, poly [ bis (4-phenyl) (2, 4, 6-trimethylphenyl) amine ] (PTAA), 2', 7' -tetrakis [ N, N-bis (4-methoxyphenyl) amino ] -9,9 '-spirobifluorene (spiro-omeTAD), 4' -cyclohexylbis [ N, N-bis (4-methylphenyl) aniline ] (TAPC), N, at least one of N '-bis (1-naphthyl) -N, N' -diphenyl-1, 1 '-diphenyl-4, 4' -diamine (NPB), 4 '-bis (N-carbazole) -1,1' -biphenyl (CBP), poly [ (9, 9-dioctylfluorenyl-2, 7-diyl) -co- (4, 4'- (N- (p-butylphenyl)) diphenylamine) ] (TFB), poly (9-vinylcarbazole) (PVK), polytrianiline (Poly-TPD), and 4,4',4 "-tris (carbazol-9-yl) triphenylamine (TCTA).
The material of the hole injection layer 60 may also be a material known in the art for hole injection layers, such as may be selected from but not limited to 2,3,6,7,10, 11-hexacyano-1, 4,5,8,9, 12-hexaazabenzophenanthrene (HAT-CN), PEDOT: PSS doped with s-MoO 3 Derivatives of (PEDOT: PSS: s-MoO) 3 ) At least one of nickel oxide, molybdenum oxide, tungsten oxide, vanadium oxide, molybdenum sulfide, tungsten sulfide, and copper oxide.
It will be appreciated that the led 100 may further include functional layers conventionally used in leds to help improve led performance, such as an electron blocking layer, a hole blocking layer, an electron injection layer, an interface modification layer, and the like.
It is understood that the materials of the layers of the led 100 may be adjusted according to the light emitting requirements of the led 100.
It is understood that the light emitting diode 100 may be a front-mounted light emitting diode or an inverted light emitting diode.
The electron transport layer 30 of the led 100 contains the mixture of the present application, thereby having high luminous efficiency and long lifetime.
The application also relates to a display device comprising the light emitting diode 100.
The present application will now be described in more detail by way of the following examples, which are intended to be illustrative of the application and not limiting thereof.
Example 1
Providing an ITO anode 10 having a thickness of 15 nm;
spin coating PEDOT on the anode 10: PSS material is annealed for 20min at 120 ℃ to obtain a hole injection layer 60 with the thickness of 40 nm;
spin-coating a TFB material on the hole injection layer 60, and annealing at 200 ℃ for 10min to obtain a hole transport layer 50 with a thickness of 25 nm;
spin-coating a quantum dot material on the hole injection layer 60, and annealing at 100 ℃ for 15min to obtain a light-emitting layer 20 with the thickness of 20 nm;
sequentially adding ZnO nano-particles, hydroxyethyl cellulose, amyl alcohol and butanediol into a 500mL single-neck flask, and stirring for 30min to obtain a composition, wherein the ZnO nano-particles content is 4wt%, the hydroxyethyl cellulose content is 0.02wt%, the amyl alcohol content is 48wt%, the butanediol content is 47.98wt%, and the hydroxyethyl cellulose molecular weight is 80000; the composition was ink-jet printed on the luminescent layer 20, then heated to 100 ℃ on a hot plate, and at 1 x 10 -4 Volatilizing and drying for 30min under the Torr vacuum to obtain an electron transport layer 30 with the thickness of 40 nm;
evaporating Ag on the electron transport layer 30 to obtain a cathode 40 with the thickness of 100 nm;
and packaging to obtain the light emitting diode 100.
Example 2
This embodiment is substantially the same as embodiment 1, except that the electron transport layer 30 of this embodiment is prepared by:
sequentially adding ZnMgO nano particles, hydroxypropyl cellulose, ethylene glycol, triethylene glycol and butanol into a 500mL high-density polyethylene bottle, and stirring for 30min to obtain a composition, wherein the composition contains 3wt% of ZnMgO nano particles, 0.02wt% of hydroxypropyl cellulose, 30wt% of ethylene glycol, 50wt% of triethylene glycol, 16.98wt% of butanol and 37000 of hydroxypropyl cellulose; the composition was ink-jet printed on the light emitting layer 20, and then heated to 130 c on a hot plate and volatilized and dried under a nitrogen stream for 30min, to obtain the electron transport layer 30.
Example 3
This embodiment is substantially the same as embodiment 1, except that the electron transport layer 30 of this embodiment is prepared by:
sequentially adding ZnO nano-particles, hydroxymethyl cellulose, glycerol and hexanediol into a 500mL high-density polyethylene bottle, and stirring for 30min to obtain a composition, wherein the ZnO nano-particles are 4wt%, the hydroxymethyl cellulose is 0.02wt%, the glycerol is 48wt%, the hexanediol is 47.98wt%, and the hydroxymethyl cellulose has a molecular weight of 8000; the composition was ink-jet printed on the luminescent layer 20, then cooled to 15 ℃ and heated at 1 x 10 -5 And volatilizing and drying for 30min under the Torr vacuum to obtain the electron transport layer 30.
Example 4
This example is essentially the same as example 1, except that the ZnO nanoparticles of example 1 are replaced with ZnAlO nanoparticles.
Example 5
This example is essentially the same as example 1, except that TiO is used in this example 2 Nanoparticles and ZnAlO nanoparticles replace the ZnO nanoparticles in example 1, and in the composition of this example, tiO 2 The content of nanoparticles was 2wt% and the content of ZnAlO nanoparticles was 2wt%.
Example 6
This example is substantially the same as example 1 except that the hydroxyethyl cellulose in example 1 is replaced with hydroxymethyl cellulose and hydroxypropyl cellulose, and the content of hydroxymethyl cellulose in the composition of this example is 0.01wt% and the content of hydroxypropyl cellulose is 0.01wt%.
Example 7
This example is essentially the same as example 1 except that the composition of this example has a ZnO nanoparticle content of 0.199wt%, a hydroxyethyl cellulose content of 0.02wt%, a amyl alcohol content of 50wt%, and a butylene glycol content of 49.78wt%.
Example 8
This example is substantially the same as example 1 except that the composition of this example has a ZnO nanoparticle content of 15wt%, a hydroxyethylcellulose content of 0.02wt%, a amyl alcohol content of 43wt% and a butanediol content of 41.98wt%.
Example 9
This example is substantially the same as example 1 except that the composition of this example has a ZnO nanoparticle content of 30wt%, a hydroxyethyl cellulose content of 0.02wt%, a amyl alcohol content of 35wt% and a butanediol content of 34.98wt%.
Example 10
This example is substantially the same as example 1 except that the composition of this example has a ZnO nanoparticle content of 0.18wt%, a hydroxyethylcellulose content of 0.02wt%, a pentanol content of 50wt% and a butanediol content of 49.8wt%.
Example 11
This example is substantially the same as example 1 except that the composition of this example has a ZnO nanoparticle content of 40 wt.%, a hydroxyethylcellulose content of 0.02 wt.%, a pentanol content of 30 wt.%, and a butanediol content of 29.98 wt.%.
Example 12
This example is substantially the same as example 1 except that the composition of this example has a hydroxyethylcellulose content of 0.001wt%, a ZnO nanoparticle content of 4wt%, a amyl alcohol content of 48wt% and a butylene glycol content of 47.999wt%.
Example 13
This example is essentially the same as example 1 except that the composition of this example has a hydroxyethylcellulose content of 5wt%, znO nanoparticles of 4wt%, amyl alcohol of 45.5wt% and butylene glycol of 45.5wt%.
Example 14
This example is essentially the same as example 1 except that the composition of this example has a hydroxyethylcellulose content of 10wt%, znO nanoparticles of 4wt%, amyl alcohol of 43wt% and butanediol of 43wt%.
Example 15
This example is essentially the same as example 1 except that the composition of this example has a hydroxyethylcellulose content of 0.0001wt%, a ZnO nanoparticle content of 4wt%, a amyl alcohol content of 48wt% and a butylene glycol content of 47.9999wt%.
Example 16
This example is essentially the same as example 1 except that the composition of this example has a hydroxyethylcellulose content of 20wt%, znO nanoparticles of 4wt%, amyl alcohol of 38wt% and butylene glycol of 38wt%.
Example 17
This example is substantially the same as example 1 except that the hydroxyethyl cellulose in the composition of this example has a molecular weight of 10000.
Example 18
This example is substantially the same as example 1 except that the molecular weight of hydroxyethyl cellulose in the composition of this example is 1000000.
Comparative example
This comparative example is substantially the same as example 1, except that the electron transport layer of this comparative example is prepared by:
sequentially adding ZnO nano-particles, amyl alcohol and butanediol into a 500mL single-neck flask, and stirring for 30min to obtain a composition, wherein the content of the ZnO nano-particles in the composition is 4wt%, the content of the amyl alcohol is 48wt%, and the content of the butanediol is 48wt%; the composition was ink-jet printed on the luminescent layer, then heated to 100 ℃ on a hot plate, and at 1 x 10 -4 And volatilizing and drying for 30min under the Torr vacuum to obtain the electron transport layer.
The compositions of examples 1 to 18 and comparative example were ink-jet printed on linear pixels and subjected to a film formation uniformity test using a white light interferometer, wherein the short axis test results in the film formation uniformity test are referred to in Table one.
The light emitting diodes of examples 1 to 18 and comparative examples were subjected to maximum luminous efficiency and T95 life test. The maximum luminous efficiency is measured by adopting a luminance meter PR650 and a keithley to measure luminance and current respectively, the current density is obtained according to the luminous area, the maximum luminance is obtained by the luminance meter test, and the ratio of the maximum luminance to the current density is the measurement of the maximum luminous efficiency; the service life T95 is tested by adopting a 128-path service life testing system customized by Guangzhou New FOV company, the system architecture is that a constant voltage and constant current source drive a light emitting diode, the brightness (photocurrent) of the light emitting diode is tested by a photodiode detector and the testing system, and the brightness (photocurrent) of the electroluminescent device is calibrated by a luminance meter test, so that the time for the initial brightness of the electroluminescent device to decay to 95% is obtained. The test results are shown in the table one.
Table one:
/>
from Table one can see:
the compositions of examples 1-18 have better film formation uniformity than the compositions of the comparative examples;
the light emitting diodes of examples 1 to 15, 17 to 18 have higher luminous efficiency and longer life than the light emitting diode of the comparative example;
wherein, the composition of example 10 has slightly poor film uniformity compared with the compositions of examples 1 to 9 because of the lower content of ZnO nanoparticles in the composition, resulting in the light emitting diode of example 10 having reduced light emitting efficiency and shortened lifetime compared with the light emitting diodes of examples 1 to 9;
wherein, the composition of example 11 has a lower uniformity of film formation compared to the compositions of examples 1 to 9, resulting in the light emitting diode of example 11 having a slightly reduced light emitting efficiency and a shortened lifetime compared to the light emitting diodes of examples 1 to 9, because the ZnO nanoparticle content in the composition is higher;
wherein, the composition of example 15 has lower uniformity of film formation compared with the composition of example 1 because of lower content of hydroxyethyl cellulose in the composition, resulting in light-emitting diode of example 15 having slightly reduced light-emitting efficiency and shortened service life compared with the light-emitting diode of example 1;
in example 16, the composition has a higher content of hydroxyethyl cellulose, so that the light-emitting diode prepared from the composition has lower luminous efficiency and shorter service life.
The above-described embodiments of the present application provide a mixture, composition, film, light emitting diode and display device, and specific examples are used herein to illustrate the principles and embodiments of the present application, and the above examples are only for aiding in understanding the methods of the present application and the core ideas thereof; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.
Claims (14)
1. A mixture characterized by: the mixture includes oxide nanoparticles and hydroxycellulose.
2. The mixture of claim 1, wherein: the mixture consists of the oxide nanoparticles and the hydroxycellulose.
3. A mixture according to claim 1 or 2, characterized in that: in the mixture, the mass ratio of the oxide nano-particles to the hydroxy cellulose is (0.199-30): (0.001-10).
4. A mixture according to claim 1 or 2, characterized in that: the oxide nanoparticles are selected from ZnO nanoparticles and TiO 2 Nanoparticles, snO 2 Nanoparticles, ta 2 O 3 Nanoparticles, zrO 2 Nanoparticles, niO nanoparticles, tiLiO nanoparticles, znAlO nanoparticles, znMgO nanoparticles, znBeO nanoparticles, znSnO nanoparticles, znLiO nanoparticles, inSnO nanoparticlesParticles and LiFeSCO 3 At least one of the nanoparticles.
5. A mixture according to claim 1 or 2, characterized in that: the average particle diameter of the oxide nano particles is 3-20 nm.
6. A mixture according to claim 1 or 2, characterized in that: the hydroxy cellulose is at least one selected from hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and hydroxypropyl methylcellulose.
7. A mixture according to claim 1 or 2, characterized in that: the molecular weight of the hydroxycellulose ranges from 10000 ～ 1000000.
8. A composition comprising a solvent, characterized in that: the composition further comprises a mixture according to any one of claims 1 to 7.
9. The composition of claim 8, wherein: the solvent is at least one selected from methanol, ethanol, propanol, butanol, amyl alcohol, ethylene glycol, triethylene glycol, glycerol and hexanediol.
10. The composition of claim 8, wherein: the content of the oxide nano particles in the composition is 0.199-30 wt%, the content of the hydroxy cellulose is 0.001-10 wt%, and the content of the solvent is 60-99.8 wt%.
11. A film comprising the mixture of any one of claims 1 to 7 or prepared from the composition of any one of claims 8 to 10.
12. A light emitting diode comprising a stacked anode, a light emitting layer, an electron transport layer, and a cathode, characterized in that: the electron transport layer comprises the mixture according to any one of claims 1 to 7, or is prepared from the composition according to any one of claims 8 to 10, or is a film according to claim 11.
13. A light emitting diode according to claim 11 wherein: the anode and the cathode are respectively and independently selected from at least one of doped metal oxide electrode, composite electrode, graphene electrode, carbon nano tube electrode, metal simple substance electrode or alloy electrode, wherein the material of the doped metal oxide electrode is selected from indium doped tin oxide, fluorine doped tin oxide, antimony doped tin oxide, aluminum doped zinc oxide, gallium doped zinc oxide, indium doped zinc oxide, magnesium doped zinc oxide and aluminum doped magnesium oxide, and the composite electrode is selected from AZO/Ag/AZO, AZO/Al/AZO, ITO/Ag/ITO, ITO/Al/ITO, znO/Ag/ZnO, znO/Al/ZnO and TiO 2 /Ag/TiO 2 、TiO 2 /Al/TiO 2 ZnS/Ag/ZnS or ZnS/Al/ZnS, wherein the material of the metal simple substance electrode is at least one selected from Ag, al, au, pt, ca and Ba; and/or
The luminescent layer is an organic luminescent layer or a quantum dot luminescent layer, wherein the material of the organic luminescent layer is selected from at least one of 4,4' -bis (N-carbazole) -1,1' -biphenyl, tris [2- (p-tolyl) pyridine-C2, N) iridium (III), 4' -tris (carbazol-9-yl) triphenylamine, tris [2- (p-tolyl) pyridine-C2, N) iridium, diarylanthracene derivative, stilbene aromatic derivative, pyrene derivative, fluorene derivative, TBPe fluorescent material, TTPX fluorescent material, TBRb fluorescent material and DBP fluorescent material, the material of the quantum dot luminescent layer is selected from at least one of single-structure quantum dots and core-shell structure quantum dots, and the material of the core-shell structure quantum dots and the material of the shell of the core-shell structure quantum dots are selected from CdSe, cdS, cdTe, znSe, znS, cdTe, znTe, cdZnS, cdZnSe, cdZnTe, znSeS, znSeTe, znTeS, cdSeS, cdSeTe, cdTeS, cdZnSeTe, cdZnSTe, inP, inXs, gxP, gxXs, gxSb, xlN, xlP, inXsP, inNP, inNSb, gxXlNP, inXlNP, cuInS 2 、CuInSe 2 AgInS 2 At least one of them.
14. A display device, characterized in that: the display device comprising the light emitting diode according to any one of claims 12 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210368919.0A CN116940150A (en) | 2022-04-08 | 2022-04-08 | Mixture, composition, film, light-emitting diode and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210368919.0A CN116940150A (en) | 2022-04-08 | 2022-04-08 | Mixture, composition, film, light-emitting diode and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116940150A true CN116940150A (en) | 2023-10-24 |
Family
ID=88383246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210368919.0A Pending CN116940150A (en) | 2022-04-08 | 2022-04-08 | Mixture, composition, film, light-emitting diode and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116940150A (en) |
-
2022
- 2022-04-08 CN CN202210368919.0A patent/CN116940150A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Xiong et al. | Realizing 17.0% external quantum efficiency in red quantum dot light-emitting diodes by pursuing the ideal inkjet-printed film and interface | |
| CN110943178A (en) | Self-assembly multi-dimensional quantum well CsPbX3Perovskite nanocrystalline electroluminescent diode | |
| US11965124B2 (en) | QLED and manufacturing method thereof | |
| CN116940150A (en) | Mixture, composition, film, light-emitting diode and display device | |
| CN114039002B (en) | Electron transport ink, electron transport film, electroluminescent diode, and display device | |
| CN114203941B (en) | Method for preparing film and light-emitting diode | |
| CN112531123B (en) | Preparation method of electron transport film layer and preparation method of quantum dot light-emitting diode | |
| CN117186694A (en) | Inorganic nanoparticle ink, electron transport film and light emitting diode | |
| WO2021129710A1 (en) | Preparation method for quantum dot light emitting diode | |
| EP3905360A1 (en) | Preparation method for quantum dot light emitting diode | |
| WO2023202150A1 (en) | Thin film, photoelectric device and display device | |
| CN116940148A (en) | Light emitting diode and display device | |
| WO2024078562A1 (en) | Film and preparation method therefor, and photoelectric device | |
| WO2023051461A1 (en) | Molybdenum oxide nanomaterial, preparation method therefor, and photoelectric device | |
| CN114203940B (en) | Method for preparing film and light-emitting diode | |
| US20240107790A1 (en) | Optoelectronic device | |
| WO2023078233A1 (en) | Light-emitting device preparation method, light-emitting device, and display apparatus | |
| WO2023051317A1 (en) | Tungsten oxide nanomaterial and preparation method therefor, and optoelectronic device | |
| WO2023070737A1 (en) | Electroluminescent device and preparation method therefor | |
| US20240107791A1 (en) | Optoelectronic device | |
| US20230332007A1 (en) | Ink composition for inkjet printing, method for producing display device, and display device | |
| CN115988944A (en) | Compound, preparation method of compound and light-emitting device | |
| JP2008034199A (en) | Distributed electroluminescence element | |
| CN116041335A (en) | Compound, electroluminescent device, preparation method of electroluminescent device and display device | |
| Acharya et al. | 44.1: Invited Paper: Quantum‐Dot Light‐Emitting Diodes for Next‐Generation Displays |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |