Cadmium Sulfide/Zinc sulfide Core Shell Nanoparticles (CdS/ZnS, 99.9%, APS: 80-100nm, Inorganic Semiconductor)

Cadmium Sulfide/Zinc sulfide Core-Shell Nanoparticles

Cadmium Sulfide (CdS) and Zinc Sulfide (ZnS) are widely studied materials due to their excellent optical, electronic, and chemical properties. Both are semiconductors with significant applications in fields such as optical devices, photocatalysis, solar energy conversion, and biomedical imaging.

Applications:

The unique properties of CdS/ZnS core-shell nanoparticles make them highly versatile for a wide range of applications, including:

Photocatalysis and Environmental Remediation

Pollutant Degradation: The photocatalytic properties of CdS are well-established, and the addition of a ZnS shell improves charge carrier dynamics, reducing electron-hole recombination. This results in enhanced efficiency for photodegradation of organic pollutants such as dyes, pesticides, and pharmaceuticals in water and air under UV or visible light irradiation.

Hydrogen Generation: The CdS/ZnS core-shell nanoparticles are also used in solar-driven water splitting for the production of hydrogen. The combination of CdS, which absorbs visible light, and ZnS, which facilitates charge separation, makes these nanoparticles highly efficient for hydrogen generation through photocatalysis.

Solar Energy Harvesting

Photovoltaic Devices: The CdS/ZnS core-shell nanoparticles are explored for use in thin-film solar cells and photovoltaic devices. The CdS core is often used as a buffer layer in CdTe solar cells, and the ZnS shell enhances charge transport and optical absorption, leading to better efficiency in solar energy conversion.

Light Harvesting: The quantum dots formed by these nanoparticles can also be used in light-harvesting applications. The tunable optical properties of the core-shell structure allow for more efficient collection and conversion of solar energy into electricity.

Fluorescent Biological Imaging

Quantum Dots for Imaging: The tunable photoluminescence of CdS/ZnS core-shell nanoparticles makes them ideal for fluorescent labeling and biological imaging. The core-shell structure allows for precise control over the emission wavelength, which is useful for multicolor imaging of cells, tissues, and even whole organisms.

Biosensing: These nanoparticles can be functionalized with biological molecules such as antibodies or DNA sequences to create biosensors that detect specific biomarkers, pathogens, or environmental contaminants. The fluorescence properties of the CdS/ZnS core-shell nanoparticles are used to detect the presence of target molecules in biomedical diagnostics.