Cadmium Selenide Quantum Dots (CdSe/ZnS QD) 545 nm

Cadmium Selenide/Zinc Sulfide (CdSe/ZnS) Core-Shell Quantum Dots, optimized for a precision emission at 545 nm, represent a high-performance semiconductor nanomaterial engineered for superior optical clarity. These nanocrystals utilize a robust core-shell architecture where the ZnS inorganic layer effectively passivates the CdSe core, resulting in exceptional photoluminescence quantum yields and enhanced stability against environmental quenching. Characterized by an ultra-narrow emission FWHM and a high molar extinction coefficient, these 545 nm dots provide a vibrant yellow-green signal that is ideal for applications requiring high spectral purity. Their well-defined surface chemistry allows for excellent dispersibility in various solvents, making them an indispensable tool for researchers developing next-generation optoelectronic devices and high-resolution biological probes.

Technical Properties

Applications

• High-Purity Bioimaging: Serves as a bright and photostable fluorescent marker for multi-color cellular imaging, offering a distinct signal that minimizes overlap with blue and red fluorophores.
• Next-Generation QLED & LCDs: Integrated into display backlighting and pixel architectures to enhance color saturation and broaden the achievable color gamut in high-definition screens.
• Photovoltaic Device Enhancement: Used in quantum dot sensitized solar cells to capture specific segments of the solar spectrum, improving the overall photon-to-electron conversion efficiency.
• Advanced Chemical & Biological Sensors: Functions as a highly sensitive transducer in assays that rely on Fluorescence Resonance Energy Transfer (FRET) for the detection of molecular interactions.
• Precision Light Emitting Diodes (LEDs): Employed in the fabrication of monochromatic LEDs and white-light conversion layers to achieve precise color temperatures and high luminous efficacy.
• Nano-Optoelectronics: Used in the development of single-photon sources and optical micro-cavities, leveraging the discrete energy levels provided by quantum confinement.