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

CdSe CdS ZnS Core-Shell Nanoparticles

CdSe/CdS/ZnS core-shell-shell nanoparticles are advanced nanomaterials consisting of a cadmium selenide (CdSe) core, a cadmium sulfide (CdS) shell, and a zinc sulfide (ZnS) outer shell. These nanoparticles represent a class of quantum dots (QDs) that combine the unique properties of three distinct semiconductor materials, enabling enhanced optical, electronic, and photonic performance compared to single-material quantum dots.

Applications

Biological Imaging and Sensing

Fluorescent Probes: The luminescent properties of CdSe/CdS/ZnS quantum dots make them ideal for use as fluorescent probes in biological imaging. The nanoparticles can be designed to emit light at specific wavelengths depending on the size of the core and shell, enabling multicolor imaging of cells, tissues, and even live animals.

Targeted Drug Delivery: By functionalizing the surface of CdSe/CdS/ZnS nanoparticles with specific ligands or antibodies, they can be used in targeted drug delivery and disease detection, such as in cancer therapy or genetic disease monitoring.

Biosensors: CdSe/CdS/ZnS quantum dots can be incorporated into biosensors for disease detection (e.g., early detection of cancer biomarkers), and environmental sensors for detecting pollutants or pathogens.

Optoelectronic Devices

Light-Emitting Diodes (LEDs): The tunable emission properties of these nanoparticles make them suitable for use in LEDs, including displays and backlighting systems. The high quantum yield of these quantum dots results in bright, efficient LEDs with rich colors.

Lasers and Photodetectors: CdSe/CdS/ZnS quantum dots can be used in laser and photodetector applications, including quantum-dot lasers that emit in the visible and near-infrared regions. Their ability to emit light with high efficiency and narrow spectral linewidth is advantageous in optical communication and sensing technologies.

Solar Cells and Energy Harvesting

Quantum Dot Solar Cells: CdSe/CdS/ZnS core-shell quantum dots can be incorporated into quantum dot solar cells to enhance the light absorption efficiency and charge transport properties. The quantum dots can absorb light across a broad range of the solar spectrum, improving the power conversion efficiency of the solar cells.

Photovoltaic Devices: The high photoexcited charge carrier separation and long carrier lifetime of these nanoparticles make them ideal for use in photovoltaic devices that aim to convert light into electrical energy more efficiently.

Photocatalysis

Water Splitting: CdSe/CdS/ZnS quantum dots are used in photocatalytic water splitting reactions to generate hydrogen from water using sunlight. The high absorption efficiency and charge carrier mobility of the core-shell structure enable effective solar-to-hydrogen conversion.

Environmental Remediation: These nanoparticles are also used for the photocatalytic degradation of pollutants such as dyes, pesticides, and industrial waste, contributing to environmental cleanup.

Display Technology

Quantum Dot Displays: Due to their tunable optical properties, CdSe/CdS/ZnS quantum dots are utilized in quantum dot displays, such as QLED (Quantum Dot LED) screens. These displays offer vivid colors and high contrast ratios with improved energy efficiency compared to traditional display technologies.

Flexible Displays: CdSe/CdS/ZnS quantum dots can be integrated into flexible displays and wearable electronics, offering potential applications in smart devices and augmented reality (AR) systems.