Fluorescent quantum dots are widely used in biological imaging due to their bright and stable fluorescence, allowing for high-resolution tracking of cellular processes. They are also employed in medical diagnostics for detecting diseases at an early stage by tagging specific biomarkers. In the field of electronics, they enhance the performance of displays and LEDs by providing a broader range of colors and improved energy efficiency. Additionally, quantum dots are utilized in solar cells to increase light absorption and conversion efficiency, making renewable energy technologies more effective. Their unique optical properties also make them valuable in security applications, such as anti-counterfeiting measures in currency and sensitive documents.