Cadmium Sulphide Quantum Dots

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Molecular Weight 144.48 g/mol
Smell Odourless
Other Names Cadmium Yellow Quantum Dots; CdS QDs
Form Colloidal Solution or Powder
Poisonous Yes
Density 4.82 Gram per cubic centimeter(g/cm3)
Structural Formula CdS
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Cadmium Sulphide Quantum Dots Product Specifications

Type Nanoparticles/Quantum Dots
Solubility Insoluble in water; slightly soluble in acids such as HCl, H2SO4, and hot nitric acid
HS Code 2827.39
Ph Level Neutral (when dispersed in neutral solvents)
Molecular Formula CdS
Storage Store in a cool, dry place away from sunlight and strong acids
Shape Spherical (typical for quantum dots)
Melting Point 1750C
Refractive Rate 2.529
Main Material Cadmium Sulphide (CdS)
Boiling point Not applicable (Decomposes before boiling)
Chemical Name Cadmium Sulphide Quantum Dots
Usage Used as semiconductors, in quantum dot displays, and in photovoltaic devices
CAS No 1306-23-6
EINECS No 215-147-8
Purity >99%
Grade Research/Laboratory Grade
Smell Odourless
Standard Meets international research grade nanoparticle standards
Molecular Weight 144.48 g/mol
Structural Formula CdS
Density 4.82 Gram per cubic centimeter(g/cm3)
Classification II-VI Semiconductor Compound
Poisonous Yes
Form Colloidal Solution or Powder
Other Names Cadmium Yellow Quantum Dots; CdS QDs
Application Bio-imaging, Solar Cells, Photodetectors, Fluorescent Probes, Optoelectronic Devices

Cadmium Sulphide Quantum Dots Trade Information

Main Domestic Market All India

Product Description

With enriched industrial experience and knowledge, we are providing an excellent range of Cadmium Sulphide Quantum Dots. Owing to their quality characteristics, these products are widely demanded in numerous industries. These products are processed using the best chemical compounds and advanced technology at vendors end. In adding up to this, these Cadmium Sulphide Quantum Dots are checked under the management of quality organizers, in order to make certain their high quality. Purity, accurate composition and unmatched quality are features of the offered product.

Tunable Optical Properties

Cadmium Sulphide Quantum Dots offer emission wavelengths that can be precisely tuned by controlling particle size during synthesis, spanning blue to red light. This makes them exceptionally versatile for research in photonics and display technologies, as well as advanced imaging applications.

Surface Chemistry and Stability

The surfaces of these quantum dots are often capped with oleic acid or similar molecules, enhancing stability and dispersibility in suitable solvents. While stable in inert atmospheres, CdS QDs degrade on exposure to strong light, air, or oxidizing environments, so careful handling and storage are recommended.

Applications and Benefits

CdS Quantum Dots play a vital role in cutting-edge fields like bio-imaging, photovoltaic devices, and quantum dot displays. Their high quantum yield and research-grade purity make them valuable for sensitive scientific experiments and commercial optoelectronic device development.

FAQs of Cadmium Sulphide Quantum Dots:

Q: How should Cadmium Sulphide Quantum Dots be stored for maximum shelf life?

A: To maximize shelf life (1224 months), Cadmium Sulphide Quantum Dots should be stored in tightly sealed containers, in a cool, dry place, away from sunlight and strong acids, and ideally under an inert atmosphere to prevent degradation.

Q: What determines the emission color of CdS Quantum Dots?

A: The emission color of CdS Quantum Dots depends on the particle sizesmaller dots emit blue light, while larger dots shift towards red. This tunability is a result of quantum size effects related to their nanometric dimensions.

Q: When are CdS Quantum Dots typically used in research or industry?

A: CdS Quantum Dots are used when precise light emission, high quantum yield, or nanoscale semiconductor properties are required, such as in bio-imaging, solar cell research, quantum dot displays, and photodetector fabrication.

Q: Where are CdS Quantum Dots applicable in optoelectronic devices?

A: CdS Quantum Dots are incorporated in optoelectronic devices such as light-emitting diodes (LEDs), quantum dot displays, solar cells, and photodetectors, where they enhance device performance due to their unique optical and electronic properties.

Q: What is the benefit of using oleic acid as a surface ligand for CdS Quantum Dots?

A: Oleic acid acts as a capping agent that improves the stability, dispersibility, and prevents aggregation of CdS Quantum Dots, ensuring consistent optical properties and longer shelf life.

Q: How toxic are Cadmium Sulphide Quantum Dots and what precautions should be taken?

A: CdS Quantum Dots are toxic due to the presence of cadmium; appropriate safety measures include handling with gloves, working under fume hoods, and avoiding ingestion or inhalation. They are not lead-free, so disposal should follow hazardous chemical protocols.

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