Sb-doped Cs2AInCl6 double-perovskite material as well as preparation method and application thereof

A double perovskite, blue light material technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of not meeting the requirements of market LED device applications, and achieve the goal of being conducive to large-scale production, low production cost, wide-ranging The effect of the application foreground

Active Publication Date: 2020-05-29
GUANGXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Tang Jiang et al. also reported that Cs 2 SnCl 6 : Sb perovskite, but the material emits orange light instead of bl...

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  • Sb-doped Cs2AInCl6 double-perovskite material as well as preparation method and application thereof
  • Sb-doped Cs2AInCl6 double-perovskite material as well as preparation method and application thereof
  • Sb-doped Cs2AInCl6 double-perovskite material as well as preparation method and application thereof

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Experimental program
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Embodiment 1

[0039] (1) Configuration of Cs precursor solution: 15 mmol of cesium-containing compound was dissolved in 15 mL of concentrated HCl solvent, and ultrasonically dissolved to obtain a 1 mol / L colorless, clear and transparent Cs precursor solution;

[0040] Configuration of Sb precursor solution: Dissolve 7.5mmol of antimony-containing compound in 15mL of concentrated HCl solvent, and ultrasonically dissolve to obtain 0.5mol / L colorless, clear and transparent Sb precursor solution;

[0041] Configuration of In precursor solution: Dissolve 7.5mmol of indium-containing compound in 15mL of concentrated HCl solvent, and ultrasonically dissolve to obtain 0.5mol / L colorless, clear and transparent In precursor solution;

[0042] Configuration of Na precursor solution: Dissolve 0.0921mmol of sodium-containing compound in 15mL of deionized water, and dissolve in ultrasonic to obtain 6.14mol / L colorless, clear and transparent Na precursor solution;

[0043] Add 1 mL of the configured Cs pr...

Embodiment 2

[0052] In step (3) of embodiment 1, the reaction kettle of step (1) was tightly packaged respectively, and put into an oven to react for 12 hours at a temperature of 160° C., and other steps were the same as in embodiment 1.

[0053] The Sb-doped Cs that embodiment 2 prepares 2 NaInCl 6 The emission (PL) spectrum of the double perovskite material is shown in Figure 4 As shown, the results show that the highest quantum efficiency is 73% at the reaction temperature of 160 °C.

Embodiment 3

[0055] Configuration of Rb precursor: Dissolve 0.5mmol of rubidium-containing compound in 8ml of concentrated HCl solvent, and dissolve with ultrasonic to obtain 0.0625mol / L colorless, clear and transparent Rb precursor solution;

[0056] In step (1) of Example 1, 0.5 mmol Rb precursor solution was added to the mixed solution to replace 81 μL of Na precursor solution, or a rubidium-containing compound was used instead of a sodium-containing compound. Other steps were the same as in Example 1.

[0057] The Sb-doped Cs that embodiment 3 prepares 2 RbSbCl 6 The emission (PL) spectrum of the double perovskite material is shown in Figure 5 As shown in (a), the results show that Sb doped with Cs 2 RbSbCl 6 The emission peak of perovskite is at 495nm, Figure 5 (b) is the corresponding XRD pattern, indicating that the as-prepared material is Sb doped with Cs 2 RbSbCl 6 Double perovskite material with good crystallinity.

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Abstract

The invention discloses a preparation method and an application of an Sb-doped Cs2AInCl6 double perovskite material. In the Sb-doped Cs2AInCl6 double perovskite material, A is Na, K and Rb, a cesium-containing compound, an A-containing compound, an antimony-containing compound and an indium-containing compound are used as reaction reagents, concentrated HCl is used as a solvent, the Sb-doped Cs2AInCl6 double-perovskite material is prepared, and the influence of the reaction temperature on the luminous efficiency of the Cs2AInCl6 double-perovskite material is explored. The Sb-doped Cs2AInCl6 double-perovskite material prepared by adopting a solvothermal method is good in crystallinity, high in quality, and capable of being rapidly synthesized in quantity and simple in process; and doping ofdifferent concentrations can be effectively realized by adjusting the feeding ratio of Sb. The material provided by the invention has good stability and high quantum efficiency (PLQY), is suitable for industrial production, and has a wide application prospect in the fields of illumination, backlight batteries, display screens, solar cells and the like.

Description

technical field [0001] The invention belongs to materials in the technical field of double perovskite photoluminescence fluorescence, and specifically relates to a kind of Sb-doped Cs 2 AInCl 6 (A=Na, K, Rb) double perovskite material and its preparation method and application. Background technique [0002] Traditional metal halide perovskites (general formula ABX 3 , where A is methylammonium (MA), formamidine (FA) or Cs, B is Pb or Sn, etc., X is Cl, Br or I) because of its excellent photoelectric properties in light-emitting diodes (LEDs), displays and solar cells have been extensively researched and applied. However, the traditional metal halide perovskite has poor stability and is not stable enough when exposed to water, light, and heat. In addition, the toxicity of Pb element is a fatal bottleneck, which limits its further large-scale application. Blue light materials are very important in the three primary colors of LEDs, and there are few perovskite materials wit...

Claims

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Application Information

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IPC IPC(8): C09K11/62
CPCC09K11/628
Inventor 曾若生黄佳烙张磊磊
Owner GUANGXI UNIV
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