Composite material and preparation method thereof
A composite material, phosphorene technology, applied in luminescent materials, chemical instruments and methods, nanotechnology for materials and surface science, etc., can solve problems such as low mobility of charge carriers
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[0019] On the other hand, the embodiment of the present invention also provides a method for preparing a composite material, such as figure 1 shown, including the following steps:
[0020] S01: providing phosphorene solution;
[0021] S02: Dispersing lead salt, cesium salt, co-solvent and the phosphorene solution in a solvent to obtain a precursor solution; wherein the lead salt and the cesium salt are halide salts;
[0022] S03: heat-treating the precursor solution to obtain the composite material.
[0023] In the preparation method of the composite material provided by the embodiment of the present invention, the composite material can be obtained by using cesium salt and lead salt as raw materials, dispersing the lead salt, cesium salt, co-solvent and phosphorene solution in a solvent, and performing heat treatment. The preparation method is simple in process and low in cost, and the final composite material has the advantages of phosphorene and perovskite quantum dots, a...
Embodiment 1
[0048] A method for preparing a composite material, comprising the steps of:
[0049] (1) Preparation of phosphorene
[0050] 500mg of black phosphorus powder, 50ml of N-cyclohexylpyrrolidone, and 2ml of cyclopropanol were added to a beaker, mixed evenly, and placed in a 300W ultrasonic pulverizer for ultrasonic treatment for 2 hours. Next, after the ultrasonic treatment was completed, the obtained dispersion was transferred to a 50ml centrifuge tube, and centrifuged at 5000rpm for 5min, the supernatant was collected, and a phosphorene dispersion was obtained. Take 2ml of the prepared phosphorene dispersion in a quality sample bottle, place the sample bottle in a vacuum drying phase, and dry overnight at room temperature. The concentration of the phosphorene dispersion was calculated by the mass difference of the sample bottle before and after drying.
[0051] (2) Synthesis of phosphorene-perovskite quantum dot composites
[0052] 1mmol of cesium chloride, 5mmol of oleic ac...
Embodiment 2
[0058] A method for preparing a composite material, comprising the steps of:
[0059] (1) Preparation of phosphorene
[0060] 500mg of black phosphorus powder, 50ml of N,N-dimethylformamide, and 2ml of cyclopropanol were added to a beaker, mixed evenly, and placed in a 300W ultrasonic pulverizer for ultrasonic treatment for 2 hours. Next, after the ultrasonic treatment was completed, the obtained dispersion was transferred to a 50ml centrifuge tube, and centrifuged at 5000rpm for 5min, the supernatant was collected, and a phosphorene dispersion was obtained. Take 2ml of the prepared phosphorene dispersion in a quality sample bottle, place the sample bottle in a vacuum drying phase, and dry overnight at room temperature. The concentration of the phosphorene dispersion was calculated by the mass difference of the sample bottle before and after drying.
[0061] (2) Synthesis of phosphorene-perovskite quantum dot composites
[0062] 1mmol of cesium chloride, 5mmol of oleic acid...
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Abstract
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