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Three-dimensional lead-free inorganic bismuth-doped silver-indium-based double perovskite material, synthesis and application thereof

A double perovskite, three-dimensional non-lead technology, applied in luminescent materials, sustainable buildings, electrical components, etc., to achieve good photoelectric application prospects, solve toxicity problems, and simple preparation methods

Inactive Publication Date: 2020-06-09
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, all-inorganic three-dimensional lead-free perovskite materials with white fluorescence have not been reported

Method used

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  • Three-dimensional lead-free inorganic bismuth-doped silver-indium-based double perovskite material, synthesis and application thereof
  • Three-dimensional lead-free inorganic bismuth-doped silver-indium-based double perovskite material, synthesis and application thereof
  • Three-dimensional lead-free inorganic bismuth-doped silver-indium-based double perovskite material, synthesis and application thereof

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Experimental program
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Embodiment 1

[0023] Add 336.8mg of cesium chloride, 143.3mg of silver chloride, 193.6mg of indium trichloride and 39.4mg of bismuth trichloride into a 20ml reactor, then add 8ml of 12mol / L concentrated hydrochloric acid, and the mixture reacts at 180°C for 15h. After the reaction, cool to room temperature at 4°C / h, quickly filter with suction, and put the obtained crystals into a vacuum oven at 55°C for 12h.

[0024] Tested by powder XRD diffraction, such as figure 1 As shown, the obtained three-dimensional bismuth-doped silver-indium-based double perovskite material has high crystallinity and obvious face-centered cubic structure.

[0025] Implementation column 2

[0026] Add 336.8mg of cesium chloride, 143.3mg of silver chloride, 131.9mg of indium oxide and 11.7mg of bismuth trioxide into a 20ml reactor, then add 8ml of 12mol / L concentrated hydrochloric acid, and react the mixture at 170°C for 15h. After the reaction, cool to room temperature at 4°C / h, quickly filter with suction, and ...

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Abstract

The invention discloses a series of three-dimensional lead-free all-inorganic bismuth-doped silver-indium-based double perovskite materials. The preparation method comprises the following steps: adding cesium chloride, a silver chloride-containing compound, a bismuth-containing compound and an indium-containing compound into a reaction kettle, adding concentrated hydrochloric acid, and reacting at160-180 DEG C for 15 hours; and after the reaction is finished, cooling to room temperature, carrying out rapid suction filtration, putting the obtained crystal into a vacuum oven, and keeping the temperature at 60+ / -5 DEG C for 12 hours. The preparation method is simple, the toxicity problem of lead-based perovskite is solved, and the stability of organic and inorganic perovskite is improved. According to the invention, the three-dimensional lead-free all-inorganic bismuth-doped silver-indium-based double perovskite material as single warm white light fluorescent powder covers a commercial ultraviolet light emitting diode to assemble into a warm white light emitting diode device, so that a good application prospect is achieved in the photoelectric field.

Description

technical field [0001] The invention belongs to the technical field of light-emitting diodes, and in particular relates to the synthesis and application of a novel light-emitting diode light-emitting material. Background technique [0002] Organic-inorganic lead-based perovskite materials have good optoelectronic properties and have been used to prepare devices such as light-emitting diodes, solar cells, and photodetectors. Lighting power consumption accounts for about 20% of the entire human electricity consumption, so white light perovskite materials have attracted extensive attention from researchers all over the world. However, the toxicity of lead and the instability of organic cations seriously restrict its large-scale application. [0003] Therefore, for the sake of environmental friendliness and sustainable development, it is an inevitable trend in the development of perovskite materials to replace lead with non-toxic or low-toxic non-lead elements, and to replace o...

Claims

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Application Information

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IPC IPC(8): C09K11/74H01L33/50H01L51/50H01L51/54H01L31/09
CPCC09K11/7435H01L33/50H10K85/00H10K50/11Y02B20/00
Inventor 韩克利韩沛耿
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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