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Ink and preparation method thereof

An ink and magnetic technology, applied in the field of ink and its preparation, can solve the problems of unbalanced carrier injection, affecting the luminous efficiency and stability of the device, and achieve the advantages of improving the performance of the device, eliminating the coffee ring effect, and improving the morphology of the film. Effect

Inactive Publication Date: 2019-10-01
TCL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an ink and its preparation method, aiming to solve the problem of unbalanced carrier injection in existing light-emitting diode devices, which affects the luminous efficiency and stability of the device

Method used

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Examples

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Effect test

preparation example Construction

[0043] Another aspect of the embodiments of the present invention provides a method for preparing ink, comprising the following steps:

[0044] S01. Provide each component according to the formula of the above-mentioned ink;

[0045] S02. Dispersing the magnetic electrode material in the organic solvent, or dispersing the magnetic electrode material and a surfactant in the organic solvent, to obtain an ink.

[0046] The preparation method of the ink provided by the embodiment of the present invention only needs to disperse the magnetic electrode material, or the magnetic electrode material and the surfactant in the organic solvent. Mass production.

[0047] Specifically, in the above-mentioned step S01, the ink formula, the ratio of each component, the material and its preferred situation are as described above, and in order to save space, details are not repeated here.

[0048] In the above step S02, the magnetic electrode material is dispersed in an organic solvent, or the...

Embodiment 1

[0059] A method for preparing ink, comprising the steps of:

[0060] Weigh 0.1g of Fe 3 o 4 and 0.50L-lysine were dissolved in 100ml of deionized water, ultrasonicated for 30min, and washed three times with deionized water after suction filtration. The collected product was transferred to a beaker, redissolved in 100ml of deionized water, and added dropwise with 1.6mmol AgN 3 In the resulting 60ml solution, the mixture was heated at 30°C for 30min. Finally, add excess sodium borohydride for reduction, wash the resulting product with deionized water, and dry it under vacuum at 50°C for 8 hours to obtain an Ag inner core and an outer shell Fe 3 o 4 The core-shell structure magnetic electrode material (Ag@Fe 3 o 4 ).

[0061] Take the prepared 20wt% Ag@Fe 3 o 4 , dispersed in a mixed solution of 40wt% ethanol and 35wt% glycerol under ultrasonic treatment, and 5wt% triethanolamine was added dropwise, and then the mixed solution was stirred for 1 h to obtain a core-shell m...

Embodiment 2

[0063] A QLED device, comprising the following material layers sequentially stacked and combined: ITO / PEDOT:PSS (poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid) / TFB (poly(9,9-dioctyl Diphenylfluorene-co-N-(4-butylphenyl)diphenylamine)) / quantum dots CdSe / ZnO / Ag@Fe 3 o 4 .

[0064] The preparation method of the QLED device is:

[0065] Prepare ITO, PEDOT:PSS layer, TFB layer, CdSe layer, ZnO layer in sequence;

[0066] The core-shell magnetic metal electrode ink prepared in Example 1 was used as an electrode material, and printed on the ZnO layer by an inkjet printing device.

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Abstract

The invention provides ink. On the basis that the total weight of the ink is 100%, the ink is prepared from the following components by weight percent: 0.01-30.0% of a magnetic electrode material and70-99.9% of an organic solvent, wherein the magnetic electrode material has a core-shell structure, an inner core of the core-shell structure is prepared from an electrode material, and an outer shellof the core-shell structure is prepared from magnetic nanoparticles.

Description

technical field [0001] The invention belongs to the field of display technology, in particular to an ink and a preparation method thereof. Background technique [0002] Quantum Dot Light Emitting Diodes (Quantum Dot Light Emitting Diodes QLED) is a light-emitting device based on inorganic nanocrystal quantum dot materials. A strong contender for next-generation display technology. [0003] In a QLED device, the movable holes are usually transferred from the anode to the light-emitting layer through the hole injection and transport layer, and recombine with the electrons transferred from the cathode through the electron injection and transport layer to form excitons, and then the excitons radiate and emit photons. The problem of carrier balance has become an important factor affecting the luminous efficiency of QLED devices, especially multilayer QLED devices. However, it is worth noting that too many holes or electrons will generate a three-particle system, which will caus...

Claims

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Application Information

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IPC IPC(8): C09D11/328C09D11/36H01L33/00H01L33/40
CPCC09D11/328C09D11/36H01L33/005H01L33/40
Inventor 向超宇王雄志朱佩李乐
Owner TCL CORPORATION