METHOD FOR SYNTHESIS OF SEMICONDUCTOR NANOPARTICLES Russian patent published in 2017 - IPC C30B29/46 B82B3/00 C09K11/88 C09K11/89 B82Y30/00 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: invention relates to colloidal chemistry and nanotechnology. Method comprises synthesis of nanocrystals of precursors containing chalcogen and a group II or IV metal, in presence of a solvent at room temperature using a "double drop method", for which said precursors are introduced simultaneously in droplets while stirring. Solvent used is an ionic liquid or a mixture of ionic liquids combined with one or more low-boiling organic solvents. Reaction mixture containing a nucleus of semiconductor quantum dots is exposed to UV light and treated with ultrasound. Nanoparticles of group II or IV metal chalcogenides are obtained with dispersion medium size of not more than 10 %, having high photostability and aggregative stability, capable of being dispersed in both polar and nonpolar solvents without additional treatment steps. Toxic solvents are not used during synthesis.

EFFECT: invention can be used in production of luminescent materials, superminiature light-emitting diodes, white light sources, including transistors, nonlinear optical devices, photosensitive and photovoltaic devices.

1 cl, 8 dwg, 11 ex