Synthesis and study of the dynamic distribution of KPbBr3 nanocrystals

In this work, KPbBr₃ halide perovskite nanocrystals were synthesized via the hot injection technique, and their structural, morphological, and optical characteristics, along with their behavior in liquid media, were thoroughly explored. The applied synthesis method facilitated the formation of nanocrystals with uniform size distribution, averaging 10.2 ± 1.5 nm. X-ray diffraction confirmed the high crystallinity and phase purity of the obtained nanocrystals, with no evidence of secondary phases. Electron microscopy analysis demonstrated that the nanocrystals predominantly exhibit a spherical morphology with well-defined boundaries. Optical investigations revealed that the synthesized KPbBr₃ nanocrystals possess strong photoluminescence, with the emission peak position varying within 5–20 nm depending on the synthesis parameters. The photoluminescence quantum yield was measured to be as high as 75%, indicating their potential for optoelectronic, photonic, and sensing applications. The dispersion stability of these nanocrystals in dimethyl sulfoxide (DMSO) was also evaluated, showing good temporal stability while indicating sensitivity to moisture, highlighting the need for protective coatings to enhance stability in ambient conditions. Overall, this study contributes to the advancement of perovskite nanocrystal research, offering pathways for the development of stable, tunable nanomaterials for practical applications in various technological fields.

Ҳали таржима қилинмаган