Fluorescent quantum dots are widely used in biological imaging due to their bright and stable fluorescence. They enable high-resolution tracking of cellular processes and molecules in real time. In medical diagnostics, they serve as sensitive probes for detecting diseases at early stages. Quantum dots are also employed in optoelectronic devices, such as LEDs and solar cells, to enhance efficiency and color accuracy. Additionally, they play a role in environmental monitoring by detecting pollutants and toxins with high precision. Their tunable optical properties make them valuable in research and industrial applications.