Hydrothermal preparation method for water-soluble CdTe quantum points

Abstract

The invention discloses a water heat preparing method of water-soluble CdTe quantum point in nanometer technical domain, which comprises the following steps: choosing cadmium chloride or cadmium oxide compound as cadmium source; choosing sodium hydride telluride formed by tellurium powder and sodium borohydride as tellurium source; choosing mercapto group amine compound as stabilizer; producing CdTe fore-body solution under the protection of nitrogen; reacting under water-heating environment; getting the product. This invention possesses warm reacting condition, convenience function, simple device, good dispersibility, even particle size and high fluorescence quantum efficiency, which can be fit for industrial production.

Description

Technical field

[0001] The invention relates to a preparation method in the field of nanotechnology, in particular to a hydrothermal preparation method of water-soluble CdTe quantum dots. Background technique

[0002] Due to its unique quantum size effect and surface effect, semiconductor quantum dots have many advantages over traditional fluorescent dye molecules used as markers: broad excitation light spectrum, narrow emission spectrum, and symmetry. The fluorescence emission wavelength can be changed by changing the quantum dot’s The size and composition are adjusted so that quantum dots of different sizes can be excited by a single wavelength of light to emit different colors of fluorescence, which can be used for multi-color labeling of multi-target molecules. In addition, quantum dots have high luminous intensity and good photochemical stability, so they are not only widely used in optoelectronic information fields such as optoelectronic devices, light-emitting diodes, and ...

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