Manganese-doped two-dimensional organic-inorganic hybrid perovskite fluorescent material as well as preparation method and application thereof

A technology of fluorescent materials and manganese doping, applied in the direction of luminescent materials, organic chemistry, chemical instruments and methods, etc., can solve the problems of less research and achieve good application prospects

Active Publication Date: 2019-01-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few studies on the regulation of the fluorescence emission

Method used

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  • Manganese-doped two-dimensional organic-inorganic hybrid perovskite fluorescent material as well as preparation method and application thereof
  • Manganese-doped two-dimensional organic-inorganic hybrid perovskite fluorescent material as well as preparation method and application thereof
  • Manganese-doped two-dimensional organic-inorganic hybrid perovskite fluorescent material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A method for preparing a manganese-doped two-dimensional organic-inorganic hybrid perovskite light-emitting material, specifically comprising the following steps:

[0039] a. Lead bromide (1 mmol), benzimidazole (2 mmol), 13.6 ml hydrobromic acid aqueous solution (40wt.%), 3.4 ml hypophosphorous acid (50 wt. % in H 2 O) add successively to the vial of 40 ml and seal it, place it on a heating plate and carry out magnetic stirring.

[0040]b. Slowly raise the temperature and heat to dissolve the reactants in step a. After the temperature is constant, continue to heat to 130°C and stir for 1 hour until the solution is clear.

[0041] c. The heating plate was slowly lowered to room temperature at a rate of 0.5°C / min, and the clear yellow solution was left to cool, and orange-yellow crystals gradually precipitated, vacuum filtered, and washed with acetone.

[0042] d. the orange-yellow solid sample obtained by suction filtration in step c was vacuum-dried for 10 hours in an...

Embodiment 2

[0047] A method for preparing a manganese-doped two-dimensional organic-inorganic hybrid perovskite fluorescent material, specifically comprising the following steps:

[0048] a. Lead bromide (1.5mmol), benzimidazole (2 mmol), 13.6 ml hydrobromic acid aqueous solution (40wt.%), 3.4 ml hypophosphorous acid (50 wt. % in H 2 O) add successively to the vial of 40 ml and seal it, place it on a heating plate and carry out magnetic stirring.

[0049] b. Slowly raise the temperature and heat to dissolve the reactants in step a. After the temperature is constant, continue to heat to 145°C and stir for 2.5h until the solution is clear.

[0050] c. The heating plate was slowly lowered to room temperature at a rate of 2.75°C / min, and the clear yellow solution was left to cool, and orange-yellow crystals gradually precipitated, vacuum-filtered, and washed with non-polarity.

[0051] d. the orange-yellow solid sample obtained by suction filtration in step c was vacuum-dried for 10 hours in...

Embodiment 3

[0056] A method for preparing a manganese-doped two-dimensional organic-inorganic hybrid perovskite fluorescent material, specifically comprising the following steps:

[0057] a. Lead bromide (4 mmol), benzimidazole (2 mmol), 13.6 ml hydrobromic acid aqueous solution (40wt.%), 3.4 ml hypophosphorous acid (50 wt.% in H 2 O) add successively to the vial of 40 ml and seal it, place it on a heating plate and carry out magnetic stirring.

[0058] b. Slowly raise the temperature and heat to dissolve the reactants in step a. After the temperature is constant, continue to heat to 160°C and stir for 4 hours until the solution is clear.

[0059] c. The heating plate was slowly lowered to room temperature at a rate of 5°C / min, and the clear yellow solution was left to cool, and orange-yellow crystals gradually precipitated, vacuum-filtered, and washed with non-polar acetone.

[0060] d. the orange-yellow solid sample obtained by suction filtration in step c was vacuum-dried for 10 hours...

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Abstract

The invention discloses a manganese-doped two-dimensional organic-inorganic hybrid perovskite fluorescent material as well as a preparation method and an application thereof and belongs to the field of a luminescent material. The method comprises the following steps of (1) preparing a crystalline material (C7H6N2)2PbBr4 by a solution method; (2) mixing MnBr2 and the crystalline material (C7H6N2)2PbBr4 according to a certain molar ratio, and grinding the mixture; and (3) heating the obtained mixture to obtain the manganese-doped two-dimensional organic-inorganic hybrid perovskite fluorescent material. By using the method disclosed by the invention, the optical property of the perovskite crystalline material can be adjusted and controlled, the red shift phenomenon occurs in a fluorescent emission wavelength after Mn is doped, meanwhile the fluorescence intensity is increased, and the material exhibits excellent application prospects in the development and research of an LED (Light Emitting Diode) luminescent device.

Description

technical field [0001] The invention belongs to the field of luminescent materials, and in particular relates to a manganese-doped two-dimensional organic-inorganic hybrid perovskite fluorescent material and its preparation method and application. Background technique [0002] In recent years, organic-inorganic hybrid lead halide perovskite compounds have attracted extensive attention due to their unique optoelectronic properties and great potential applications in photovoltaic devices, LEDs, and photodetection. Two-dimensional perovskite compounds have the advantages of narrow emission peak width, low cost, simple preparation, and can adjust the fluorescence emission peak in the visible light range by changing the composition and size. These advantages make two-dimensional perovskite materials in the The field of optoelectronics such as LEDs and lasers has become the focus of research. At the same time, two-dimensional perovskite materials have high thermal and water stabi...

Claims

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Application Information

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IPC IPC(8): C07D235/06C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D235/06C09K2211/1029H10K85/6572H10K50/00
Inventor 张杰黄佳傅志勇张浩宇鞠敏
Owner SOUTH CHINA UNIV OF TECH
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