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CdSe/ZnS Quantum Dots

Stock No.
NS6130-12-000120
CAS
1306-24-7
MSDS
MSDS-PDF
Specifications
SPEC-PDF
COA
COA-PDF
Catalogue
MSDS pdf

Cadmium Selenide ZnS Core Shell

(CdSe/Zinc Sulphide Quantum Dots-520nm)
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CdSe/Zinc Sulphide Quantum Dots-520nm
ProductCadmium Selenide /Zinc Sulphide Quantum Dots
Stock No.NS6130-12-000120
CAS1306-24-7Confirm
Purity99.9%Confirm
CompositionCdSe/ZnSConfirm
Emission Peak520nmConfirm
Quantum Yield60-80%Confirm
Average Particle Size (FWHM)25-30nmConfirm
ApplicationCell Imaging Application
SolventTouleneConfirm
Quality ControlEach Lot of Cadmium Selenide /Zinc Sulphide Quantum Dots was tested successfully
Main Inspect VerifierManager QC

Typical Chemical Analysis

Assay99.9%
Other Metal800ppm

Expert Reviews

product-expert-image
Dr. Bruce Perrault Ph.D (Georgia Institute of Technology (Georgia Tech), USA)

Cadmium Selenide /Zinc Sulphide re 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.

product-expert-image
Dr. Myron Rubenstein Ph.D (Polytechnic University of Turin, Italy)

Cadmium Selenide /Zinc Sulphide 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).

product-expert-image
Dr. Huojin Chan (University of Science and Technology of China, Hefei, Anhui, China)

Cadmium Selenide /Zinc Sulphide Quantum 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.

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

Cadmium Selenide /Zinc Sulphide 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.

product-expert-image
Dr. Hans Roelofs Ph.D (National Technical University of Athens, Greece)

Cadmium Selenide /Zinc Sulphide CdSe/ZnS 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.

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Cadmium Selenide /Zinc Sulphide Quantum Dots

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Cadmium Selenide ZnS Core Shell (CdSe/Zinc Sulphide Quantum Dots-520nm)

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