Cadmium Selenide Quantum Dots (CdSe/ZnS)

Nanografi presents high-quality Cadmium Selenide Quantum Dots (CdSe/ZnS) tailored to suit specific requirements.

What are Cadmium Selenide/Zinc Sulfide Quantum Dots?

Cadmium Selenide/Zinc Sulfide (CdSe/ZnS) Quantum Dots are semiconductor nanoparticles with tunable emission across the visible spectrum (450–645 nm). Their core–shell architecture, where a CdSe core is epitaxially passivated by a ZnS shell, reduces surface defects and suppresses non-radiative recombination. This results in strong photoluminescence efficiency, narrow emission bandwidths, and enhanced photostability. Depending on ligand chemistry, they can be dispersed in water or oil, offering versatile compatibility for research and industrial applications.

Synthesis and Applications of CdSe/ZnS Quantum Dots

CdSe/ZnS Quantum Dots are synthesized using colloidal methods that allow precise control of particle size and emission wavelength. The ZnS shell provides stability and improved quantum yield, while surface ligands (such as MPA, CA, GSH, PEG-COOH, PEG-NH2) enable solubility in aqueous or organic systems. CdSe/ZnS QDs are widely applied in bioimaging, biosensing & diagnostics, drug delivery & tracking, environmental monitoring, energy & photocatalysis, optoelectronics & leds.