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Sb<3+> ion activated and color-adjustable perovskite chloride luminescent material

A luminescent material and perovskite-type technology, which is applied in the field of perovskite-type chloride luminescent materials and its preparation, can solve problems such as destroying the ecosystem, poor stability of perovskite, human health, and human nervous system hazards. The effect of uniform particles and clear edges and corners

Pending Publication Date: 2022-02-11
YUNNAN MINZU UNIV
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Problems solved by technology

However, lead-based halide perovskite has a fatal shortcoming. The lead element it contains not only has great harm to human health and human nervous system, but also destroys the local ecosystem.
In addition, lead-based halide perovskites are less stable, which is another annoying shortcoming

Method used

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  • Sb&lt;3+&gt; ion activated and color-adjustable perovskite chloride luminescent material
  • Sb&lt;3+&gt; ion activated and color-adjustable perovskite chloride luminescent material
  • Sb&lt;3+&gt; ion activated and color-adjustable perovskite chloride luminescent material

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Embodiment 1

[0035] Perovskite Chloride Luminescent Material Rb 2 sn 1-x Cl 6 :xSb 3+ The preparation method specifically comprises the following steps:

[0036] (1) Take by weighing 10-20 parts of hydrochloric acid solution, 300-400 parts of tin chloride, 200-300 parts of rubidium chloride, and 0-30 parts of antimony oxide;

[0037] (2) Add 10ml of hydrochloric acid into a 15ml polytetrafluoroethylene reaction kettle equipped with a stirring bar, and at a temperature of 70°C, add tin chloride and rubidium chloride in sequence, and then magnetically stir at a constant speed of 400-600r / min for 15min , and then add antimony oxide and stir for 6h to obtain a precipitate;

[0038] (3) Wash the precipitate 4 times with ethanol and dry it in an oven at 80°C for 24 hours to obtain the perovskite-type chloride luminescent material Rb 2 sn 1-x Cl 6 :xSb 3+ .

[0039] figure 1 It is the perovskite type chloride luminescent material Rb of embodiment 1 2 sn 1-x Cl 6 :xSb 3+ The XRD diff...

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Abstract

The invention discloses a color-adjustable perovskite type chloride luminescent material, the chemical composition is Rb2Sn1-xCl6:xSb<3+>, x is the molar percentage coefficient of doped Sb<3+> relative to tin ions in a matrix, and x is more than 0 and less than or equal to 0.1. The perovskite type chloride is an inorganic compound of which the anion of a matrix material is chloride ion and the structure is perovskite. According to the color-adjustable luminescent material disclosed by the invention, when the material is excited under different wavelengths, the position of the strongest emission peak corresponding to the material changes correspondingly. The preparation method comprises the following steps: (1) weighing 10-20 parts of a hydrochloric acid solution, 300-400 parts of tin chloride, 200-300 parts of rubidium chloride and 0-30 parts of antimony oxide; (2) sequentially adding tin chloride, rubidium chloride and antimony oxide into a hydrochloric acid solution, and magnetically stirring to obtain a precipitate; and (3) washing the precipitate with ethanol, and drying to obtain the product. The color-adjustable luminescent material is prepared by taking Sb<3+> as a luminescent center and perovskite chloride as a matrix.

Description

technical field [0001] The invention relates to the technical field of inorganic luminescent materials, and more specifically relates to a color-tunable perovskite-type chloride luminescent material and a preparation method thereof. [0002] technical background [0003] The development of science and technology has promoted the continuous enhancement of people's awareness of energy conservation and environmental protection. A new technology is urgently needed to meet the demands of display and lighting. In the past ten years, light-emitting diodes (LEDs, light-emitting diodes) have attracted much attention due to their outstanding advantages such as energy saving, environmental protection (mercury-free), high luminous efficiency, small size, fast response time, and long life, and have successfully replaced traditional fluorescent lamps. Lighting sources such as incandescent lamps and incandescent lamps have become a new generation of solid-state lighting sources. However, ...

Claims

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Application Information

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IPC IPC(8): C09K11/66H01L33/50
CPCC09K11/7435H01L33/504
Inventor 万婧周强张茜卿松褚玲香汪正良唐怀军
Owner YUNNAN MINZU UNIV
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