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CN-122011019-A - Green light luminescent material and preparation method and application thereof

CN122011019ACN 122011019 ACN122011019 ACN 122011019ACN-122011019-A

Abstract

The invention discloses a green light luminescent material and a preparation method thereof, wherein the green light luminescent material is prepared by mixing manganese halide and alkyl triphenylphosphine halide, and then preparing the green light luminescent material by a wet chemical method or a solid-phase melting method, wherein the manganese halide comprises one or two of manganese chloride or manganese iodide, the alkyl triphenylphosphine halide comprises one or more of ethyl triphenylphosphine chloride, ethyl triphenylphosphine iodide or isopropyl triphenylphosphine iodide, and the preparation method is simple, convenient and feasible, and has low cost and large-scale production potential.

Inventors

  • CHEN FANG
  • TIAN XUANYU
  • LI YANAN

Assignees

  • 浙江大学温州研究院
  • 杭州电子科技大学

Dates

Publication Date
20260512
Application Date
20260122

Claims (8)

  1. 1. The preparation method of the green light luminescent material is characterized by comprising the following steps of: mixing manganese halide and alkyl triphenylphosphine halide, and preparing a green light luminescent material by a wet chemical method or a solid phase melting method; Wherein the manganese halide comprises one or two of manganese chloride and manganese iodide; the alkyl triphenylphosphine halide comprises one or more of ethyl triphenylphosphine chloride, ethyl triphenylphosphine iodide or isopropyl triphenylphosphine iodide.
  2. 2. The method of claim 1, wherein the molar ratio of manganese halide to alkyl triphenylphosphine halide is 1:2 to 1:2.1.
  3. 3. The preparation method according to claim 1, wherein the wet chemical method specifically comprises dissolving manganese halide and alkyl triphenylphosphine halide in a polar solvent, and then obtaining the green luminescent material through supersaturation crystallization.
  4. 4. A method of preparation according to claim 3, wherein the polar solvent comprises N, N-dimethylformamide, acetonitrile or ethanol.
  5. 5. The method according to claim 1, wherein the solid phase melting method is specifically a method of heating and melting manganese halide and alkyl triphenylphosphine halide and cooling to obtain the green light-emitting material.
  6. 6. A green light-emitting material prepared by any one of claims 1 to 5.
  7. 7. The green light-emitting material according to claim 6, wherein the emission peak of the green light-emitting material is 539 to 543nm.
  8. 8. The green light emitting material of claim 6, wherein the morphology of the green light emitting material comprises a block, powder, or film.

Description

Green light luminescent material and preparation method and application thereof Technical Field The application relates to the field of luminescent materials, in particular to a green luminescent material and a preparation method thereof. Background The perceived efficiency of the human eye's visual system for light of different wavelengths is represented by the photopic efficiency function V (λ), which peaks around 555 nm. Therefore, when designing a high-efficiency luminous display system, the degree of matching between the emission spectrum and the luminous efficiency function V (λ) directly determines the subjective brightness perception at the same radiant power. Compared with other wavelengths, green light is shorter, the spectrum of the green light is located at 544-nm and is closer to a human eye high-sensitivity area, higher visual brightness efficiency is generally obtained under the same radiation power, and system power consumption is more friendly, so that the optimal balance of system power consumption and color is realized. This compromise between color gamut and luminance efficiency is known as the DCI-P3 standard, which was originally developed to meet the requirements of digital cinema for color consistency and higher saturation, and later has been a "wide color gamut target" commonly used for consumer displays, which defines a dominant wavelength of the green primary color of about 544.2 nm. The relative sRGB/Rec.709 can cover a larger visual color gamut range, and the whole color vividness and sense of reality are improved. Therefore, in display engineering practice, the emission peak position of the green emission spectrum is designed to be 540-545 nm, and the engineering "green peak about 540 nm" has become a key and typical design point for realizing DCI-P3. At present, a typical green material with an emission peak at 540 nm, which has been commercially applied, is β -SiAlON: eu 2+, and the green material in the introduction stage mainly includes manganese ion doped borate materials, cdSe-based quantum dots, inP-based quantum dots, and perovskite quantum dots. However, the material has certain limitations, such as poor stability, heavy metal materials such as cadmium or lead contained in CdSe-based quantum dots, strict limitations on the use of the CdSe-based quantum dots, complex large-scale preparation process, high mass production difficulty, high preparation cost and the like of InP-based quantum dots and partial perovskite quantum dots. In view of the foregoing, there is a need for a novel green light emitting material that has excellent performance, simple preparation method, and low cost. Disclosure of Invention The application aims to overcome the defects of the prior art, provides a green light luminescent material and a preparation method thereof, and aims to provide a novel green light luminescent material meeting the green light standard for display. In order to achieve the above purpose, the application adopts the following technical scheme: in a first aspect, the present invention provides a method for preparing a green light emitting material, which is prepared by the following method: mixing manganese halide and alkyl triphenylphosphine halide, and preparing a green light luminescent material by a wet chemical method or a solid phase melting method; Wherein the manganese halide comprises one or two of manganese chloride and manganese iodide; the alkyl triphenylphosphine halide comprises one or more of ethyl triphenylphosphine chloride, ethyl triphenylphosphine iodide or isopropyl triphenylphosphine iodide. As a preferable scheme, the molar ratio of the manganese halide to the alkyl triphenylphosphine halide is 1:2-1:2.1. As a preferable scheme, the wet chemical method specifically comprises the steps of dissolving manganese halide and alkyl triphenylphosphine halide in a polar solvent, and then obtaining the green luminescent material through supersaturation crystallization. As a preferred embodiment, the polar solvent includes N, N-dimethylformamide, acetonitrile or ethanol. As a preferable scheme, the solid phase melting method specifically comprises the steps of heating and melting manganese halide and alkyl triphenylphosphine halide, and cooling to obtain the green luminescent material. In a second aspect, the invention also provides a green luminescent material prepared by the method. As a preferable scheme, the luminescence peak of the green luminescent material is 539-543 nm. As a preferred embodiment, the green light emitting material comprises a block, a powder or a film. Compared with the prior art, the application has the beneficial effects that: 1. The material has excellent performance and meets the display application requirement, and the invention successfully prepares the novel organic-inorganic hybridization green light luminescent material based on the manganese halide through screening and halogen regulation of metal halide and organic molecules; 2.