a cspbbr 3 No-current synthesis method of nanocrystals
A synthesis method and nanocrystal technology, applied in nanotechnology, chemical instruments and methods, lead compounds, etc., can solve problems such as inability to grow industrially and uneven morphology of CsPbBr3 nanocrystals, so as to promote industrial-grade production, uniform size, The effect of fluorescence peak narrowing
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[0035] A kind of CsPbBr of the present invention The no-load synthesis method of nanocrystal, comprises the steps:
[0036] (1) Build a no-carrying droplet reactor, such as figure 1 , including a syringe propeller 1, a syringe 2, a polymer pipe 3, a heating device 4 and a cooling collection device 5, the syringe 2 is fixedly installed on the syringe propeller 1, one end of the polymer pipe 3 is connected to the syringe 2, and the other end is connected to the cooling collection device The device 5 is connected, and the middle section of the pipeline 3 is completely placed in the heating device 4;
[0037] Wherein, the material of the syringe 2 can be quartz glass; the material of the polymer pipe 3 can be polytetrafluoroethylene. The heating device 4 can be an oil bath, the oil can be silicone oil, and the middle section of the polymer pipeline 3 is completely immersed in the oil bath. An ice-water bath is used for cooling and collecting. Correspondingly, the cooling and colle...
Embodiment 1
[0041] according to figure 1 The non-carrying liquid droplet reactor was built by the method, in which the material of the syringe 2 is made of quartz glass, the material of the polymer pipe 3 is made of transparent polytetrafluoroethylene, the heating device 4 is an oil bath filled with 2 / 3 volume of silicone oil, and the cooling and collecting device 5 is a glass bottle soaked in ice water. The inner diameter of the polymer pipe 3 is 2 mm, and the length of the polymer pipe 3 soaked in the heating device 4 is 2 m.
[0042] Synthesis of CsPbBr using the above-mentioned unloaded droplet reactor 3 Nanocrystals, the steps are as follows:
[0043] 1) Synthesis of PbBr 2 Precursor: 0.13gPbBr 2 , 2mL oleylamine, 1mL oleic acid, and 10mL 1-octadecene were mixed in a 50mL three-necked flask, vacuumed and heated to 120°C, then argon was introduced, the solution turned light yellow and clear, then stopped heating, and naturally cooled to room temperature ;
[0044] 2) Synthesis o...
Embodiment 2
[0051] according to figure 1 The non-carrying liquid droplet reactor was built by the method, in which the material of the syringe 2 is made of quartz glass, the material of the polymer pipe 3 is made of transparent polytetrafluoroethylene, the heating device 4 is an oil bath filled with 2 / 3 volume of silicone oil, and the cooling and collecting device 5 is a glass bottle soaked in ice water. The inner diameter of the polymer pipe 3 is 4mm, and the length of the polymer pipe 3 soaked in the heating device 4 is 3m.
[0052] Synthesis of CsPbBr using the above-mentioned unloaded droplet reactor 3 Nanocrystals, the steps are as follows:
[0053] 1) Synthesis of PbBr 2 Precursor: 0.1gPbBr 2 , 1mL dioctylamine, 1mL diisooctylphosphinic acid, 5mL 1-octadecene were placed in a 50mL three-necked flask and mixed, vacuumed and heated to 140°C, then argon gas was introduced, the solution turned light yellow and clear, then stopped Heating, naturally cooling to room temperature;
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