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Zero dimension perovskite structure luminescent material A4BX6 and preparation method thereof

A technology of A4BX6, perovskite structure, applied in the directions of luminescent materials, polycrystalline material growth, chemical instruments and methods, etc., can solve the problems of less reports, and achieve the effect of less environmental damage, high luminous efficiency, and mild production conditions

Active Publication Date: 2017-10-20
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, people are paying more attention to the three-dimensional perovskite material ABX 3 As well as its photovoltaic application, the zero-dimensional perovskite material A 4 BX 6 There are few reports on its preparation method

Method used

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  • Zero dimension perovskite structure luminescent material A4BX6 and preparation method thereof
  • Zero dimension perovskite structure luminescent material A4BX6 and preparation method thereof
  • Zero dimension perovskite structure luminescent material A4BX6 and preparation method thereof

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Embodiment 1

[0029] The zero-dimensional perovskite structure luminescent material A of this embodiment 4 BX 6 , where A is Cs + , B is Pb, X is Br, then A 4 BX 6 for Cs 4 PbBr 6 , the preparation method of its powder and single crystal, specifically comprising the following steps:

[0030] 1. Configure the precursor solution

[0031] Weigh 0.4256g cesium bromide (CsBr), 0.1835g lead bromide (PbBr 2 ) into a 50mL beaker with a stirring bar, add 10mL dimethyl sulfoxide (DMSO), seal the beaker with a double layer of PM-996 and polytetrafluoroethylene film, and stir at room temperature for 12 hours with a magnetic stirrer Above, ultrasonic assisted dissolution, add 1mL of hydrobromic acid with a concentration of 48wt% to the stirred solution, and after stirring for half an hour, filter the solution with a 45 μm PTFE filter membrane to obtain a precursor solution;

[0032] 2-1. Powder preparation

[0033] Take 10 mL of the precursor solution in step 1 in a 50 mL tall beaker, and add 8...

Embodiment 2

[0038] The zero-dimensional perovskite structure luminescent material A of this embodiment 4 BX 6 , where A is Cs + , B is Pb, X is Cl, then A 4 BX 6 for Cs 4 PbCl 6 , the preparation method of its powder and single crystal, specifically comprising the following steps:

[0039] 1. Configure the precursor solution

[0040] Weigh 0.0842g cesium chloride (CsCl), 0.0278g lead chloride (PbCl 2 ) into a 50mL beaker with a stirring bar, add 10mL dimethyl sulfoxide (DMSO), seal with PM-996 and polytetrafluoroethylene film double-layer film, stir at room temperature with a magnetic stirrer for more than 12 hours, Ultrasonic-assisted dissolution, adding 1mL of concentrated hydrochloric acid with a concentration of 37wt% to the stirred solution, and after stirring for half an hour, filter the solution with a 45 μm PTFE filter membrane to obtain a precursor solution;

[0041] 2-1. Powder preparation

[0042] Take 10mL of the precursor solution in step 1 in a 50mL tall beaker, dro...

Embodiment 3

[0046] The zero-dimensional perovskite structure luminescent material A of this embodiment 4 BX 6 , where A is Cs + , B is Pb, X is Br and I, then A 4 BX 6 for Cs 4 PB 2 Br 4 , the preparation method of its powder and single crystal, specifically comprising the following steps:

[0047] 1. Configure the precursor solution

[0048] Weigh 0.4256g cesium bromide (CsBr), 0.1153g lead iodide (PbI 2 ) into a 50mL beaker with a stirring bar, add 3.3mL dimethyl sulfoxide (DMSO), 6.7mL γ-butyrolactone (GBL), seal with PM-996 and polytetrafluoroethylene film double-layer film, use Stir with a magnetic stirrer at room temperature for more than 12 hours, and dissolve with the aid of ultrasonic waves; add 0.6mL of 48wt% hydrobromic acid and 0.3mL of 57wt% hydroiodic acid to the stirred solution, stir for half an hour and use a 45μm A PTFE filter membrane filters the solution to obtain a precursor solution;

[0049] 2-1. Powder preparation

[0050] Take 10mL of the precursor solu...

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Abstract

The invention discloses a zero dimension perovskite structure luminescent material A4BX6 and a preparation method thereof. The preparation method comprises the steps of utilizing a principle that the solubility of a solute in a precursor solution can be reduced through an anti-solvent, dripping or slowly diffusing the anti-solvent into the precursor solution so as to prepare the zero dimension perovskite structure efficient luminescent material A4BX6 powder or a single crystal, and concretely, dissolving an A-containing halogen compound and a B-containing halogen compound or B-containing oxide into a solvent to obtain the precursor solution; slowly dripping or diffusing the precursor solution into the anti-solvent, and separating out the zero dimension perovskite structure luminescent material A4BX6 from the precursor solution. The method has the advantages that the obtained zero dimension perovskite structure luminescent material A4BX6 has high purity, the luminous efficiency is high, the requirement on the used equipment is simple, and the like.

Description

technical field [0001] The invention belongs to the technical field of luminescent material preparation, in particular to a zero-dimensional perovskite structure luminescent material A 4 BX 6 and its preparation method. Background technique [0002] Luminescent materials have played a vital role in the development of human society from the beginning to the present. In addition to being used for daily lighting, it is also widely used in high-tech fields such as communications, optical computers, biomolecular probes, and aerospace. In recent years, a perovskite structure A n BX 2+n materials (especially organic-inorganic hybrid materials CH 3 NH 3 wxya 3 ) is triggering a revolution in the field of semiconductors, which has attracted great attention to this series of materials, which are considered to have broad application prospects in photovoltaic materials, luminescent materials and other fields. The study found that this series of perovskite structure materials has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/66C09K11/06C01G5/00C01G21/00C01G19/00C30B29/12C30B7/00
CPCC09K11/06C09K11/665C30B7/00C30B29/12C01G5/006C01G19/006C01G21/006C01P2002/72C01P2004/02
Inventor 胡明钰于杰徐旭辉冯晶周晓龙徐明丽孟彬
Owner KUNMING UNIV OF SCI & TECH
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