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Light-emitting-charge-transmitting compound, ink comprising same, preparation method thereof and QLED device

A charge transfer and compound technology, applied in the direction of electric solid devices, electrical components, semiconductor devices, etc., can solve the problems of cumbersome preparation methods of QLED devices, and achieve the effect of reducing the number of implementations, simplifying the production process, and reducing the probability of failure.

Active Publication Date: 2017-06-13
NANJING TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a light-emitting-charge transport compound, ink containing it, its preparation method and QLED device, so as to solve the cumbersome problem of the QLED device preparation method in the prior art

Method used

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  • Light-emitting-charge-transmitting compound, ink comprising same, preparation method thereof and QLED device
  • Light-emitting-charge-transmitting compound, ink comprising same, preparation method thereof and QLED device

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preparation example Construction

[0037] In another typical embodiment of the present application, a method for preparing a luminescence-charge transport complex is provided, the preparation method comprising: step S1, mixing the first organic solution containing the core-shell quantum dot raw material with the charge transport compound containing the first organic solution The second organic solution of the material is mixed to form a cross-linked product, wherein the core-shell quantum dot raw material is a core-shell quantum dot with a surface ligand on the shell surface, and the charge transport material is an inorganic nanocrystal raw material with a ligand; step S2, mixing the substance to be crosslinked with the precursor of the crosslinking part to form a system to be crosslinked; and step S3, making the system to be crosslinked to be crosslinked to obtain a liquid system containing a luminescence-charge transport complex, wherein the crosslinking The part replaces at least part of the ligands on the su...

Embodiment 1

[0053] Hole transport material NiO X Synthesis of (1≤x≤2) nanocrystals (the first inorganic nanocrystal raw material): 1mmol of nickel stearate, 0.2mmol of lithium stearate, and 6mmol of stearyl alcohol were added to 10ml of 1-octadecene Put it into a 50ml flask, raise the temperature to 80°C under the protection of inert gas, and vacuumize for 30min; raise the temperature to 280°C under the protection of inert gas and keep it for 120min, cool to room temperature, add precipitant ethanol and centrifuge to obtain colloidal NiO X Nanocrystalline.

[0054] Quantum dots and hole transport material NiO XCross-linking: using red light quantum dots CdSe / CdS (purchased from Nanocrystal Technology Co., Ltd.) whose surface ligand is oleic acid as core-shell quantum dots, 1ml concentration of 15mg / ml quantum dot hexane solution and 1ml concentration Mix with 15 mg / ml NiO hexane solution, add 1 wt% lauryl acrylate (brand LA) to prevent coagulation, then inject 10 μl of cross-linking age...

Embodiment 2

[0058] Hole transport material NiO X The synthesis of nanocrystal (the first inorganic nanocrystal raw material) is the same as in Example 1.

[0059] Quantum dots and hole transport material NiO X (The first inorganic nanocrystal raw material) cross-linking: the surface ligand is the red light quantum dot CdSe / CdS of oleic acid (purchased in Najing Technology Co., Ltd.) as the core-shell quantum dot, and the concentration of 1ml is 15mg / ml Quantum dot hexane solution with 0.2ml of NiO at a concentration of 15mg / ml X The hexane solution was mixed, and 1 wt% lauryl acrylate (brand LA) was added to prevent coagulation, and then 10 μl of cross-linking agent hexanedithiol was injected, and stirred at 35° C. for 3 h. The quantum dots after the above cross-linking reaction and the hole transport material NiO were combined by ethanol X Precipitate and purify, and then dissolve in dodecane to configure luminescence-hole transport ink.

[0060] Cross-linking of quantum dots and ele...

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Abstract

The invention provides a light-emitting-charge-transmitting compound, an ink comprising same, a preparation method thereof and a QLED device. The light-emitting-charge-transmitting compound comprises a nuclear shell quantum point which has a nucleus and a housing layer; a charge transmission part which is made of inorganic nanometer crystal; and a crosslinking part through which the housing layer is connected with the charge transmission part. The nuclear shell quantum point as a light emitting layer in prior art is crosslinked with the charge transmission part as a transmission layer through the crosslinking part, thereby realizing integration of a light emitting function and a transmission function in one compound. Furthermore in manufacture of the QLED device, the film structure which is formed by the light-emitting-charge-transmission compound has the light emitting function and the transmission layer function. Therefore the film layer with two functions can be formed through a one-time solution method, thereby reducing number-of-times of solution method applications, and furthermore simplifying a QLED device manufacture process.

Description

technical field [0001] The invention relates to the field of light-emitting devices, in particular to a light-emitting-charge transport compound, an ink containing it, a preparation method thereof, and a QLED device. Background technique [0002] Quantum Dot (Quantum Dot, referred to as QD) is usually a nanoparticle composed of II-VI or III-V elements, which can emit fluorescence after being excited, and the luminescence spectrum can be controlled by changing the size of the quantum dot. And its fluorescence intensity and stability are good, and it is a good electroluminescent material. There are many kinds of quantum dots, representative ones are CdS, CdSe, CdTe, ZnO, ZnS, ZnSe, ZnTe, etc. of II-VI groups and GaAs, GaP, GaAs, GaSb, HgS, HgSe, HgTe, InAs, InP, InSb, AlAs, AlP, AlSb, etc., and quantum dots with a core-shell structure composed of the above elements. [0003] Compared with general organic light-emitting diode (Organic Light-Emitting Diode, OLED for short) dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/56
CPCH10K50/115H10K50/15H10K71/00
Inventor 谢松均
Owner NANJING TECH CORP LTD
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