Cadmium Selenide Quantum Dots (CdSe/ZnS QD) 480 nm

Cadmium Selenide/Zinc Sulfide (CdSe/ZnS) Core-Shell Quantum Dots, engineered for a precision emission at 480 nm, represent a high-performance solution for short-wavelength optical applications. These nanocrystals feature a high-purity CdSe core passivated by an epitaxial ZnS shell, which effectively eliminates surface dangling bonds and minimizes non-radiative recombination. This core-shell architecture ensures an exceptionally high photoluminescence quantum yield and robust stability against photo-oxidation. Characterized by a narrow FWHM (Full Width at Half Maximum) and high molar extinction coefficients, these 480 nm dots provide a vibrant blue-cyan signal with minimal spectral overlap. Their well-defined size distribution and predictable surface chemistry make them an ideal candidate for integration into advanced thin-film devices and sophisticated fluorescence-based diagnostic platforms.

Technical Properties

Applications

• Multiplexed Bioimaging: Functions as a high-energy fluorescent probe in multi-color imaging, allowing for the simultaneous tracking of multiple cellular targets when used alongside longer-wavelength emitters.
• Blue-Cyan Light Emitting Diodes (LEDs): Integrated into specialized solid-state lighting and display backlighting to achieve precise color tuning and enhanced luminous efficacy in the blue region.
• Photovoltaic Up-conversion: Utilized in solar cell research to capture high-energy photons and optimize the spectral match for various thin-film solar architectures.
• Fluorescence Resonance Energy Transfer (FRET): Acts as a highly efficient donor molecule in FRET-based biosensors due to its strong absorption in the UV-blue range and stable 480 nm emission.
• Chemical & Gas Sensors: Employed in the development of sensitive detection systems where fluorescence quenching is used to identify trace environmental contaminants or hazardous gases.
• Quantum Information Processing: Used in the fabrication of single-photon sources and nanophotonic circuits, leveraging the discrete energy levels provided by high-quality quantum confinement.