| abstract |
The application discloses a method for preparing perovskite quantum dots, comprising steps: S1, providing a first precursor and a second precursor for synthesizing perovskite quantum dots; S2, making the first precursor and the second precursor Mix and react with additives to obtain a mixed liquid containing perovskite quantum dots, wherein the chemical structural formula of the additives is ABC 3 , A and B are each independently selected from different cations, and C is selected from oxygen ions or sulfur ions , or at least one halide ion; S3, removing additives from the mixed solution containing perovskite quantum dots to obtain perovskite quantum dots. In the present application, additives with perovskite crystal configuration are added during the synthesis process of perovskite quantum dots, thereby facilitating the formation of perovskite quantum dots, and obtaining perovskite quantum dots with high fluorescence quantum yield. |