Synthesis method of high-fluorescence-efficiency Mn doping Cs2AgInCl6

Abstract

The invention provides a synthesis method of high-fluorescence-efficiency Mn doping Cs2AgInCl6, and belongs to the technical field of semiconductor nanometer material preparation. According to the method, firstly, cesium chloride, silver chloride and indium chloride are mixed; then, grinding is performed; the mixture gradually becomes hard from puff white powder to be attached onto a container wall and then becomes soft; continuous grinding is performed until the mixture becomes the puff white powder again; next, manganese chloride is added; continuous grinding is performed until the pink ultra-dry manganese chloride is uniformly dispersed into a reaction system; when the pink color disappears, the grinding is stopped; the obtained product is cleaned by ethanol, and then dried for 2 hoursunder the vacuum conditions of 60 to 350 DEG C; high-fluorescence-efficiency Mn<2+> Cs2AgInCl6 is obtained. The synthesis method has the advantages that the operation is simple; the method is simple;the fluorescence quantum yield is high; the industrialized production can be easily realized, and the like.

Description

technical field [0001] The invention belongs to the technical field of semiconductor nanomaterial preparation, and in particular relates to a Mn-doped Cs with high fluorescence efficiency 2 AgInCl 6 Preparation method of lead-free double-layer perovskite. Background technique [0002] Lead Halide Perovskite A I Pb II x 3 (A=CH 3 NH 3 , Cs; X = Cl, Br, I) has been widely used in the field of optoelectronics due to its excellent inherent characteristics such as a wide fluorescence range, ultra-high fluorescence quantum yield, and high carrier mobility. Although traditional lead halide perovskites have many excellent properties, it is undeniable that lead halide perovskites have poor thermal stability and are unstable in humid environments; and because lead halide perovskites contain lead elements, Therefore, it is generally more toxic. [0003] In this case, the bilayer perovskite A 2 m I m III x 6 (A=Cs + , M I =Cu + , Ag + , Na + ; III = Bi 3+ ,Sb 3+ ,In ...

AI Technical Summary

Problems solved by technology

This method is complicated to operate, requires the introduction of strong acid and needs to be carried out under heated reaction conditions, which is not conducive to large-scale industrial production, and greatly limits its application prospect as a red phosphor

Although this method improves the fluorescence quantum yield of double-layer perovskite, it cannot be applied on a large scale to solve practical production problems and provide human society with high fluorescence quantum yield, good stability, and no toxic metals. perovskite material

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