Fluorescent quantum dots are widely used in biological imaging due to their bright and stable fluorescence, enabling high-resolution tracking of cellular processes and molecules. In medical diagnostics, they serve as sensitive probes for detecting diseases, including cancer, by targeting specific biomarkers. They are also applied in optoelectronics, enhancing the efficiency of LEDs, solar cells, and displays by tuning their emission wavelengths. Additionally, quantum dots are utilized in environmental monitoring to detect pollutants and toxins with high precision. Their versatility and tunable properties make them valuable in research, technology, and industrial applications.