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Luminescent material composition and application thereof

A technology of luminescent materials and compositions, which is applied in the manufacture of electrical components, electrical solid devices, semiconductor/solid devices, etc., and can solve problems such as electron and hole injection imbalance

Active Publication Date: 2021-05-11
GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to propose a light-emitting material composition and its application, aiming to solve the problem of unbalanced electron and hole injection in the existing light-emitting diode structure

Method used

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  • Luminescent material composition and application thereof
  • Luminescent material composition and application thereof
  • Luminescent material composition and application thereof

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preparation example Construction

[0050] Based on the luminescent material composition provided above, the present invention also proposes a method for preparing the luminescent material composition as described above. In a specific embodiment, the first organic solvent may be mixed with the second organic solvent A mixed solvent is formed, and then the luminescent material and the electron acceptor dopant are added into the mixed solvent and fully mixed evenly. It may also be that the luminescent material is formulated into a luminescent material solution using the first organic solvent, and the electron acceptor dopant is formulated into an electron acceptor dopant solution using the second organic solvent, and then the two The solutions are mixed evenly. In an embodiment of the preparation method of the luminescent material combination provided by the present invention, it is preferable to adopt a step-by-step method. Specifically, the preparation method of the luminescent material composition includes the ...

Embodiment 1

[0070] The luminescent material composition includes quantum dots (red CdSe / ZnSe / ZnS), F4-TCNQ, n-octylbenzene and toluene; wherein, the concentration of cadmium-based quantum dots is 10 mg / mL, and the concentration of F4-TCNQ is 0.5 mg / mL , the volume ratio of n-octylbenzene and toluene is 9:1.

Embodiment 2

[0072] The luminescent material composition includes quantum dots (red CdSe / ZnSe / ZnS), F4-TCNQ, dicyclohexyl and toluene; wherein, the concentration of cadmium-based quantum dots is 10mg / mL, and the concentration of F4-TCNQ is 0.5mg / mL , the volume ratio of dicyclohexyl to toluene is 9:1.

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Abstract

The invention discloses a luminescent material composition and application thereof, the luminescent material composition comprises a luminescent material, an electron acceptor dopant, a first organic solvent and a second organic solvent, the first organic solvent is used for dispersing the luminescent material, and the second organic solvent is used for dispersing the electron acceptor dopant. According to the invention, the electron acceptor dopant is doped in the luminescent material, so that on one hand, the energy band of the luminescent layer can be bent, the hole injection barrier can be reduced, and on the other hand, the hole transmission capability and rate of the luminescent layer can be improved, thereby solving the problem of unbalanced electron and hole injection.

Description

technical field [0001] The invention relates to the technical field of display devices, in particular to the technical field of light-emitting diodes, in particular to a luminescent material composition and applications thereof. Background technique [0002] Existing display devices usually use light-emitting diodes as light sources. Traditional light-emitting diodes generally use a sandwich structure of electron transport layer (ETL) / light-emitting layer (EML) / hole transport layer (HTL). The ETL transports electrons injected from the cathode to the EML. , while the holes are injected from the anode, transported to the EML through the HTL, and the electrons and holes recombine and radiate in the EML to achieve light emission. [0003] ETL generally uses zinc oxide (ZnO), titanium oxide (TiO 2 ), tin oxide (SnO 2 ) and other inorganic semiconductor oxides, which have high electron mobility and matching conduction band energy levels; HTL generally use organic compounds, such...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/56
CPCH10K71/15H10K50/11H10K2101/40H10K50/155
Inventor 蒋杰庄锦勇李雪
Owner GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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