CdS/ZnS core-shell type quantum dots lyophilized, fluorescence λem 450 nm, solid
CdS/ZnS or CdSe/ZnS quantum dots (QDs) with carboxylic acid in lyophilized solid form can readily be reconstituted in DI water or DMSO to any desired concentration and are very stable in most buffer solutions in the pH range of 5-10. These QDs possess zeta potential in -30 mV to -50 mV range and can easily be reacted with amine containing molecules in DMSO or water. These QDs find applications in bioimaging and biosensing…
| CdS/ZnS core-shell type quantum dots | |
| Product No. | NRE-21003 |
| Concentration | 5mg/ml |
| Purity | 99.9% |
| Formula | CdS/ZnS |
| Florescence | Λem 450nm |
| APS | <10nm |
| Solvent | Toluene |
| Quantum Yield | 40-80% |
| FWHM | <30nm |
| Form | Solid |
CdS/ZnS core-shell type quantum dots
CdS/ZnS core-shell type quantum dots are a type of semiconductor nanomaterial where cadmium sulfide (CdS) forms the core, and zinc sulfide (ZnS) is used as the shell. This core-shell structure offers enhanced optical properties compared to the core-only CdS quantum dots, such as improved luminescence, greater stability, and reduced toxicity. These quantum dots are used in a variety of applications across different fields due to their unique properties.
Applications
Optoelectronics
Light-Emitting Diodes (LEDs): CdS/ZnS quantum dots are used in high-efficiency light-emitting devices. They exhibit bright and tunable photoluminescence, which makes them suitable for LEDs, offering color purity and stable performance.
Solar Cells: These quantum dots are incorporated into quantum dot solar cells. The tunable bandgap allows them to absorb different parts of the solar spectrum, improving the efficiency of solar energy conversion.
Bioimaging and Biosensing
Fluorescence Imaging: Due to their strong and tunable fluorescence, CdS/ZnS quantum dots are widely used in biological imaging. They can be engineered to target specific cells, tissues, or even molecules, providing high-resolution images with minimal photobleaching.
Biosensors: CdS/ZnS quantum dots can be functionalized with biomolecules for the detection of disease markers or pathogens. Their fluorescence changes in response to the presence of specific targets, enabling biosensing in medical diagnostics and environmental monitoring.
Photocatalysis
Water Splitting for Hydrogen Production: CdS/ZnS quantum dots are being explored in photocatalysis applications, such as water splitting for hydrogen production. The shell improves the stability of CdS, allowing more efficient solar-to-chemical energy conversion.
