METHOD FOR SYNTHESIS OF SEMICONDUCTOR QUANTUM DOTS Russian patent published in 2010 - IPC C30B7/00 C30B29/46 C09K11/02 C09K11/88 B82B3/00 

FIELD: physics.

SUBSTANCE: invention relates to synthesis of nucleus- and nucleus-shell type semiconductor quantum dots through colloidal synthesis, which can be used in making different luminescent materials, as well as a base for making subminiature light-emitting diodes, white light sources, single-electron transistors, non-linear optical devices, photodetector and photovoltaic devices. The method for synthesis of semiconductor quantum dots based on chalcogenides of group II or group IV metals involves synthesis of nuclei of nanocrystals from a precursor containing chalcogen, and a precursor containing group II or IV metals, using an organic solvent and a surface modifier in form of (aminoalkyl)trialkoxysilanes. The nuclei are synthesised at constant temperature within the limits of 150 - 250°C for 15 s to 1 hour and the reaction mixture containing the nucleus of nanocrystals is further treated with UV light for 1-10 minutes and ultrasound for 5-15 minutes.

EFFECT: increase in photo-stability of semiconductor quantum dots to 34%, dispersibility in non-polar and polar solvents with retention and increase of quantum yield.

9 cl, 11 ex, 1 tbl, 6 dwg