Composite material and its preparation method and quantum dot light-emitting diode

A technology of composite materials and quantum dots, which is applied in the field of quantum dot light-emitting diodes, composite materials and their preparation, can solve the problem of low carrier transport capacity, increase composite luminescence rate, improve dispersion, and increase output coupling Effect
CN112300781BActive Publication Date: 2022-02-11TCL CORPORATION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TCL CORPORATION
Publication Date
2022-02-11

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Abstract

The invention belongs to the technical field of nanometer materials, and in particular relates to a composite material, a preparation method thereof and a quantum dot light-emitting diode. The composite material includes quantum dots and silver ethylenediamine tetraacetate combined on the surface of the quantum dots; wherein, silver ions in the silver ethylenediamine tetraacetate combine with anions on the surface of the quantum dots. In the composite material, the surface plasmon resonance effect of silver on the surface of the quantum dot can induce local electromagnetic field enhancement, thereby increasing the light output coupling of the quantum dot and the recombination luminescence rate, and the composite material is used for the quantum dot luminescence of the quantum dot light-emitting diode layer, which can effectively improve the luminous efficiency of the device, thereby improving the performance of the device.
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Description

technical field

[0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a composite material, a preparation method thereof and a quantum dot light-emitting diode. Background technique

[0002] LCD (Liquid Crystal Display, liquid crystal display) display technology requires a backlight source, which has many limitations such as high power consumption, complex structure and process, and high cost. When quantum dots replace traditional phosphors, the color gamut of the display can be greatly improved. The application of quantum dots in the backlight module shows that the display color gamut can be increased from 72% NTSC to 110% NTSC. However, when quantum dots get rid of the backlight technology and use active matrix quantum dot light-emitting diode display devices, compared with traditional backlight LCDs, self-illuminating QLEDs (Quantum Dot Light Emitting Diode, quantum dot light-emitting diodes) have better performance in b...

Claims

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