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Quantum dot ink, QLED device and preparation method and application thereof

A technology of quantum dots and quantum dot materials, applied in the field of quantum dot ink, can solve the problems of poor device performance, unstable life, and inappropriate printing process, and achieve the effect of strong process operability and lower production cost.

Pending Publication Date: 2021-08-13
SHENZHEN PLANCK INNOVATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the quantum dot film water provided by the above patent is not suitable for the printing process, and the quantum dot light-emitting layer obtained after printing is not uniform, which leads to poor performance and unstable life of the entire device, which limits the development of QLED devices

Method used

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  • Quantum dot ink, QLED device and preparation method and application thereof
  • Quantum dot ink, QLED device and preparation method and application thereof

Examples

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Embodiment 1

[0061] A kind of quantum dot ink, described quantum dot ink comprises that concentration is 20mg / mL red light CdSe quantum dot, mass ratio is the combination of n-dodecane, cyclohexyl alcohol and butyl propionate of 3:6:1; Viscosity is 2cps, the surface tension is 25.6N / m;

[0062] The preparation method comprises: dissolving red light CdSe quantum dots in a mixed solvent of n-dodecane, cyclohexyl alcohol and butyl propionate to obtain the quantum dot ink.

Embodiment 2

[0064] A kind of quantum dot ink, described quantum dot ink comprises that concentration is 1mg / mL red light CdSe quantum dot, mass ratio is the combination of n-dodecane, cyclohexyl alcohol and butyl propionate of 2:5:1; Viscosity is 3cps, the surface tension is 25.6N / m.

[0065] The preparation method comprises: dissolving red light CdSe quantum dots in a mixed solvent of n-dodecane, cyclohexyl alcohol and butyl propionate to obtain the quantum dot ink.

Embodiment 3

[0067] A kind of quantum dot ink, described quantum dot ink comprises that concentration is 30mg / mL red light CdSe quantum dot, mass ratio is the combination of n-dodecane, cyclohexyl alcohol and butyl propionate of 4:7:1; Viscosity is 3cps, the surface tension is 25.6N / m.

[0068] The preparation method comprises: dissolving red light CdSe quantum dots in a mixed solvent of n-dodecane, cyclohexyl alcohol and butyl propionate to obtain the quantum dot ink.

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Abstract

The invention provides quantum dot ink, a QLED device and a preparation method and application thereof. The quantum dot ink comprises a combination of a quantum dot material, an alkane main solvent, an alcohol viscosity modifier and an ester blender. A multi-component solvent system is adopted to dissolve a quantum dot material, so that the obtained quantum dot ink is more suitable for a printing technology, a quantum dot light-emitting layer obtained through printing can be more uniform and stable, and a QLED device comprising the quantum dot light-emitting layer is higher in light-emitting efficiency, more stable and longer in service life and has important research significance.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a quantum dot ink, a QLED device and a preparation method and application thereof. Background technique [0002] Quantum Dots, also known as semiconductor nanocrystals, are a new type of semiconductor nanomaterials, which have unique photoluminescence and electroluminescence properties due to quantum size effects and dielectric confinement effects. Compared with traditional organic fluorescent dyes, quantum dots have high quantum yield, high photochemical stability, not easy to photolysis, wide excitation, narrow emission, high color purity, luminous color can be adjusted by controlling the size of quantum dots, etc. Optical properties have broad application prospects in the field of display technology, among which quantum dot light-emitting devices (QLED devices), as one of the most concerned application methods, have become a research hotspot. [0003] As the rese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/03C09D11/033C09D11/38C09D11/36H01L51/50H01L51/56
CPCC09D11/03C09D11/033C09D11/38C09D11/36H10K71/135H10K50/115H10K71/00
Inventor 孙小卫王恺贾思琪唐浩东马精瑞刘湃
Owner SHENZHEN PLANCK INNOVATION TECH CO LTD
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