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Home » Quantum Dots Cell Labeling (Cadmium Selenide /Zinc Sulphide Quantum Dots-640nm)


Stock No. CAS MSDS Specification COA Catalogue
NS6130-12-000126 1306-24-7 MSDS pdf Specification pdf COA pdf

Quantum Dots Cell Labeling (Cadmium Selenide /Zinc Sulphide Quantum Dots-640nm)

Product: Quantum Dots Cell Labeling (CdSe/ZnS Qds-640nm)

Cadmium Selenide /Zinc Sulphide Quantum Dots-640nm

Cadmium Selenide /Zinc Sulphide Quantum Dots-640nm

Product Cadmium Selenide /Zinc Sulphide
Stock No. NS6130-12-000126
CAS 1306-24-7 Confirm
Purity 99.9% Confirm
Composition CdSe/ZnS Confirm
Emission Peak 640nm Confirm
Quantum Yield 50-70% Confirm
Average Particle Size (FWHM) 25-30nm Confirm
Application Cell Imaging Application
Solvent Toulene Confirm
Quality Control Each lot of Cadmium Selenide /Zinc Sulphide was tested successfully.
Main Inspect Verifier Manager QC

Typical Chemical Analysis

Assay 99.9%
Other Metal 800ppm

Expert Reviews

Dr. Bruce Perrault, Ph.D (Georgia Institute of Technology (Georgia Tech), USA)

CdSe ZnS Quantum Dots are semiconductor nanocrystals that have tunable emission through changes in their size. Producing bright, efficient quantum dots with stable fluorescence is important for using them in applications in lighting, photovoltaics, and biological imaging. In order to increase the fluorescence and stability of CdSe quantum dots were passivated with ZnS shell through the pyrolysis of organometallic precursors.

Dr. Myron Rubenstein, Ph.D (Polytechnic University of Turin, Italy)

CdSe ZnS Quantum Dots The inorganic passivation of nanocrystal with higher band gap materials, resulting in core/shell structure nanocrystals such as CdSe/ZnS and CdSe/CdS, showed high quantum efficiency up to 50% because of the robust passivation of the surface defects and also the quantum confinement effect which enhances exciton recombination in the core. The shell-protected CdSe/ZnSQDs exhibited higher photoluminescent (PL) efficiency and stability than their corresponding CdSe core QDs. The proper passivation of the nanocrystal surfaces is necessary to achieve a high quantum yield (QY).

Dr. Huojin Chan, (University of Science and Technology of China, Hefei, Anhui, China)

CdSe ZnS Quantum Dots yield was observed to increase with increasing shell thickness until 3 monolayers, after which quantum yield decreased and the likelihood of flocculation of the colloid increased. The quantum yield also increased with increasing Zn:S ratio, possibly indicating that zinc atoms may substitute for missing cadmium atoms at the CdSe surface.

Dr. Ms. Yi Yen Shi, (King Mongkut’s University of Technology Thonburi,Bangkok, Thailand)

CdSe ZnS Quantum Dots With increasing time and temperatures the nanoparticles become slowly disordered hence the exciton energy decreases whereas the nanoparticle size increases slowly. It is due to size effect which depends on the thermodynamic properties of nanoparticles.

Dr. Hans Roelofs, Ph.D (National Technical University of Athens, Greece)

CdSe ZnS Quantum Dots core-shell quantum dots (QDs) have received special interest from due to their high photoluminescence (PL) quantum yield (QY) with narrow bandwidth, large band gap tunability across the visible spectrum and robustness. Composite materials containing CdSe/ZnS nanocrystals are promising for a wide range of high-performance applications, as biosensors high efficiency quantum-LEDs photovoltaic devices and lasers.

Cadmium Selenide /Zinc Sulphide

Cadmium Selenide /Zinc Sulphide

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