A method for synthesizing telluride nanocrystals without phosphine
A nanocrystal and telluride technology, applied in selenium/tellurium compounds, chemical instruments and methods, metal selenide/telluride, etc., can solve the problems of high toxicity of TOP, polluting cost of preparation process and high price, and achieve low cost , the effect of short synthesis time and simple process
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Embodiment 1
[0015] Embodiment 1 Synthesis of phosphine-free CdTe nanocrystals
[0016] The synthesis of CdTe nanocrystals is carried out in a Schlenk system. The synthesis process requires nitrogen protection. The specific synthesis process is as follows: in a glove box under nitrogen protection, 0.0128g tellurium powder and 3mL dodecanethiol are weighed In the bottle, stir at room temperature for 5 minutes, add 3 mL of oleylamine to obtain a uniform black solution, which is recorded as a solution. Put 0.0733g cadmium chloride and 5mL oleylamine into the three-necked bottle, then plug the two sides of the three-necked bottle with rubber stoppers, connect the middle port to the Schlenk system, and connect the thermocouple from one side of the three-necked bottle Insert it under the liquid surface, stir and heat to 120-140°C to obtain a colorless and clear solution, which is designated as solution b. Inject solution a into solution b, react at 240°C for 10 minutes, and extract samples.
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Embodiment 2
[0018] The synthesis of embodiment 2 phosphine-free PbTe nanocrystals
[0019] The synthesis of PbTe nanocrystals is carried out in a Schlenk system. The synthesis process requires nitrogen protection. The specific synthesis process is as follows: in a glove box under nitrogen protection, 0.0128g tellurium powder and 3mL dodecanethiol are weighed In the bottle, stir at room temperature for 5 minutes, add 3 mL of oleylamine to obtain a uniform black solution, which is recorded as a solution. Put 0.1112g lead chloride and 5mL oleylamine into the three-necked bottle, then plug the two sides of the three-necked bottle with rubber stoppers, connect the middle port to the Schlenk system, and connect the thermocouple from one side of the three-necked bottle Insert it under the liquid surface, stir and heat to 120-140°C to obtain a white solution, which is designated as solution b. Inject solution a into solution b, react at 220°C for 10 minutes, and extract samples.
[0020] The tr...
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