Preparation method of Cu2CdSnS4 nanometer crystal
A technology of nanocrystals and reactants, applied in chemical instruments and methods, inorganic chemistry, tin compounds, etc., to achieve the effects of good crystallinity, simple preparation method, and low cost
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Embodiment 1
[0016] Add 80mmol oleylamine into the three-necked round-bottomed flask reactor, and sequentially add the reactant precursors 0.5mmol copper acetylacetonate, 0.5mmol cadmium acetate, 0.5mmol tin acetate and 1mmol sulfur powder into the reaction flask, and in an argon atmosphere Raise the temperature until all the precursors are dissolved. In an atmosphere of argon, the reaction temperature was increased to 280° C. for 15 minutes, and after the reaction was stopped, methanol was added to the cooled reaction product to cause the nanoparticles to settle. Finally, the nanocrystals were collected by centrifugation at 12,000 rpm for 3 minutes.
Embodiment 2
[0018] 190mmol oleylamine was added to the three-necked round-bottomed flask reactor, and the reactant precursor 5mmol copper acetylacetonate, 2.5mmol cadmium chloride, 2.5mmol tin acetate and 10mmol hexamethyldisilazane were added to the reaction flask successively, The temperature was raised under an argon atmosphere until the precursor was completely dissolved. In an atmosphere of argon, the reaction temperature was raised to 320° C. for 8 minutes, and after the reaction was stopped, methanol was added to the cooled reaction product to cause the nanoparticles to settle. Finally, the nanocrystals were collected by centrifugation at 8000 rpm for 8 min.
Embodiment 3
[0020] Add 20mmol oleylamine into the three-necked round-bottomed flask reactor, and sequentially add the reactant precursors 0.5mmol ethylxanthate copper, 0.25mmol ethylxanthate cadmium, and 0.25mmol ethylxanthate tin into the reaction flask , the temperature was raised in an argon atmosphere until all the precursors were dissolved. In an atmosphere of argon, the reaction temperature was raised to 270° C. for 25 minutes, and after the reaction was stopped, methanol was added to the cooled reaction product to cause the nanoparticles to settle. Finally, the nanocrystals were collected by centrifugation at 10,000 rpm for 5 min. Example 4:
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