METHOD OF PREDICTING PHOTOSTABILITY OF COLLOIDAL SEMICONDUCTOR QUANTUM DOTS WITH NUCLEUS-SHELL STRUCTURE IN OXYGEN-CONTAINING MEDIUM Russian patent published in 2012 - IPC G01N21/27 G01N17/00 G01N21/64 C09K11/08 B82B3/00 

FIELD: physics.

SUBSTANCE: invention relates to a method of predicting photostability of colloidal semiconductor quantum dots with a nucleus-shell structure in an oxygen-containing medium, involving measuring kinetics of a photoluminescent signal of quantum dots for the tested and reference batches, determining for said batches values of a parameter which characterises the rate of decay of the photoluminescent signal over time. The rate is characterised by that quantum dots are pre-deposited on the surface of a solid substrate, and said measurement is carried out in a gaseous medium containing ozone with fixed concentration. Further, a higher level of photostability of the tested batch relative the reference batch is predicted with the ratio of values of said parameter corresponding to decrease in the rate of decay of the photoluminescent signal for the tested batch relative the reference batch and vice versa.

EFFECT: use of the present method does not require use special expensive microscopic equipment, powerful photoexcitation sources, additional photoexcitation sources and liquid or toxic chemicals.

3 cl, 1 dwg