METHOD FOR SYNTHESIS OF QUANTUM DOTS OF PEROVSKITE CsPbBr USING MICROWAVE HEATING Russian patent published in 2024 - IPC C30B29/12 C09K11/55 C09K11/61 C09K11/66 B82Y40/00 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry and can be used in making technically complex semiconductor devices. Into beakers with capacity of 50 ml are loaded precursors – PbBr₂ and CsBr in molar ratio 1:1, 2 ml of oleic acid and a solvent, which is 10 ml of dodecane, as well as 0.2 g of octadecylamine. Said substances are mixed. Molar concentration of PbBr₂ and CsBr in the mixture is in range of 0.1 to 0.5 mmol/l. Obtained mixture is placed in a microwave oven, heated therein at 700 W for 5 minutes, then cooled to room temperature. Obtained nanoparticles, which are perovskite quantum dots, are centrifuged at 9,000 rpm for 10 minutes to remove supernatant, and the obtained products are dispersed with dodecane for the following experiments.

EFFECT: invention provides high quantum yield of fluorescence of quantum dots and narrowing of their size distribution.

1 cl, 2 dwg