Mn-doped two-dimensional organic-inorganic hybrid perovskite BDACdBr4 single crystal/powder material as well as preparation method and application thereof

A technology of powder materials and single crystal materials, applied in the field of organic-inorganic hybrid perovskite photoluminescence fluorescence, can solve the problems of limited practical application and unstable material structure, and achieve low cost, high preparation efficiency, and light absorption range wide effect

Active Publication Date: 2022-07-01
GUANGXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when it is exposed to light, humidity and high temperature for a long time, the material will undergo a structurally unstable phase transition, which limits its further practical application.

Method used

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  • Mn-doped two-dimensional organic-inorganic hybrid perovskite BDACdBr4 single crystal/powder material as well as preparation method and application thereof
  • Mn-doped two-dimensional organic-inorganic hybrid perovskite BDACdBr4 single crystal/powder material as well as preparation method and application thereof
  • Mn-doped two-dimensional organic-inorganic hybrid perovskite BDACdBr4 single crystal/powder material as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0051] This embodiment is the Mn-doped two-dimensional organic-inorganic hybrid perovskite BDACdBr described in the present invention 4 An example of a method for the preparation of single crystal / powder materials, known as the slow cooling hot solvent method, includes the following steps:

[0052] (1) Mix 1 mmol 1,4-butanediamine (BDA) and 1 mmol cadmium acetate with manganese acetate with molar masses of 0.01 mmol, 0.05 mmol, 0.1 mmol, 0.15 mmol and 0.20 mmol, respectively, as reaction precursors and then place them in 20mL of different glass bottles, and then add 5mL of hydrobromic acid.

[0053] (2) Add the glass bottle to the magnetic stirring bar, seal it, put it on a heatable stirring table, and heat and stir at 100 °C for 1 hour to obtain a clear and transparent saturated solution.

[0054] (3) Let the transparent thermal solution slowly cool to 45°C without disturbance and keep it for 24h, during which the single crystal grows slowly;

[0055] (4) The solid single c...

Embodiment 3

[0068] This embodiment is the Mn-doped two-dimensional organic-inorganic hybrid perovskite BDACdBr described in the present invention 4 Another example of a method for the preparation of single crystal / powder materials, called mechanical milling, includes the following steps:

[0069] (1) Mix 1 mmol of butanediamine (BDA) hydrobromide and 1 mmol of cadmium acetate with manganese acetate with molar masses of 0.01 mmol, 0.05 mmol, 0.1 mmol, 0.15 mmol, and 0.20 mmol, respectively, as reaction precursors and then place them in In an agate mortar, grind for 20 minutes;

[0070] (2) The solid powder product after grinding was collected, washed twice with isopropanol, and dried in an oven overnight to obtain 1%, 5%, 10%, 15%, 20% Mn-doped two-dimensional organic-inorganic hybrid Perovskite BDACdBr 4 powder material.

Embodiment 5

[0079] This embodiment is the Mn-doped two-dimensional organic-inorganic hybrid perovskite BDACdBr described in the present invention 4 Yet another example of a method for preparing a single crystal / powder material, called a hydrothermal method, includes the following steps:

[0080] (1) Mix 1 mmol 1,4-butanediamine (BDA) and 1 mmol cadmium acetate with manganese acetate with molar masses of 0.01 mmol, 0.05 mmol, 0.1 mmol, 0.15 mmol and 0.20 mmol, respectively, as reaction precursors and then place them in In the polytetrafluoroethylene lining of the reaction kettle, add the reaction solution hydrobromic acid;

[0081] (2) after the reactor was sealed, put into an oven to react for 4 hours at a temperature of 120 ° C;

[0082] (3) After the reaction is completed, cool to room temperature naturally, collect the solid product, wash twice with isopropanol, and dry overnight in an oven to obtain 1%, 5%, 10%, 15%, 20% Mn doped Two-dimensional organic-inorganic hybrid perovskite B...

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Abstract

The invention discloses a Mn-doped two-dimensional organic-inorganic hybrid perovskite BDACdBr4 single crystal/powder material as well as a preparation method and application thereof. According to the Mn-doped two-dimensional organic-inorganic hybrid perovskite BDACdBr4 single crystal/powder, a 1, 4-butanediamine (BDA) derivative, a cadmium-containing compound and a manganese-containing compound are used as reaction precursors, and hydrobromic acid is used as a reaction solution. And the influence of the Mn doping amount on the luminous efficiency is explored. The Mn-doped two-dimensional organic-inorganic hybrid perovskite BDACdBr4 single crystal/powder material prepared by adopting the preparation method is good in crystallinity, stable in structure, simple and convenient in preparation process, capable of being rapidly and massively synthesized, high in luminous efficiency and capable of realizing 608nm broadband orange light emission under ultraviolet excitation. The material has a good application prospect in the fields of illumination, display, photoelectric detectors or solar cells and the like.

Description

technical field [0001] The invention relates to materials in the technical field of organic-inorganic hybrid perovskite photoluminescence and fluorescence, in particular to Mn(II)-doped two-dimensional organic-inorganic hybrid perovskite BDACdBr 4 Single crystal / powder material and preparation method and application thereof. Background technique [0002] Two-dimensional organic-inorganic hybrid perovskite materials, as a new type of optoelectronic materials, tend to exhibit higher carrier migration than three-dimensional perovskites due to their superior layered structure and good intra-layer connectivity. rate and lower defect density. At the same time, 2D hybrid perovskite has the incomparable stability of 3D lead-based perovskite, so 2D perovskite has become a candidate material for many optoelectronic devices, such as: optoelectronic applications, such as solar cells, photodetectors, luminescence Diodes, field effect transistors and lasers, etc. Traditional three-dime...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C09K11/61
CPCC09K11/06C09K11/61C09K2211/10Y02E10/549
Inventor 曾若生陈灿栩
Owner GUANGXI UNIV
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