Zinc Selenide /Zinc Sulphide Quantum Dots

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Structural Formula ZnSe/ZnS
Molecular Formula ZnSe/ZnS
Other Names ZnSe/ZnS Quantum Dots
Taste Odorless and tasteless
Form Colloidal Dispersion or Powder
Poisonous Yes
Ph Level Neutral (pH 7 when dispersed in neutral solvents)
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Zinc Selenide /Zinc Sulphide Quantum Dots Product Specifications

Molecular Weight ZnSe: 144.35 g/mol; ZnS: 97.45 g/mol
Purity >99%
EINECS No 215-257-4 (ZnS); 215-897-4 (ZnSe)
Boiling point Sublimes without melting (ZnSe, ZnS)
Refractive Rate ZnSe: 2.67; ZnS: 2.35
HS Code 2852.00
Storage Store in tightly sealed containers, protected from light and moisture
Melting Point Zinc Selenide: 1,525C; Zinc Sulphide: 1,700C
Shape Spherical Nanoparticles
Main Material Zinc Selenide (ZnSe), Zinc Sulphide (ZnS)
Application Optoelectronics, bio-imaging, LED, sensors, and solar cells
Density 5.27 Gram per cubic centimeter(g/cm3)
Smell Odorless
Solubility Insoluble in water, soluble in organic solvents
CAS No 1315-09-9 (ZnS); 1315-09-9 (ZnSe)
Taste Odorless and tasteless
Molecular Formula ZnSe/ZnS
Other Names ZnSe/ZnS Quantum Dots
Usage Fluorescent labeling, display devices, photovoltaic cells
Ph Level Neutral (pH 7 when dispersed in neutral solvents)
Grade Nanomaterial Grade
Type Quantum Dots
Form Colloidal Dispersion or Powder
Chemical Name Zinc Selenide / Zinc Sulphide Quantum Dots
Poisonous Yes
Classification Inorganic Semiconductor Nanoparticles
Structural Formula ZnSe/ZnS
Standard Analytical Grade/Nanomaterial Standard

Zinc Selenide /Zinc Sulphide Quantum Dots Trade Information

Main Export Market(s) Western Europe, South America, Eastern Europe, Middle East, Africa, Central America, Australia, Asia, North America
Main Domestic Market All India

Product Description

Zinc Selenide /Zinc Sulphide Quantum Dots

Product	Zinc Selenide /Zinc Sulphide
Stock No.	NCZQD106-19
CAS	1315-09-9
Purity	99.9%
Composition	ZnSe/ZnS
Emission Peak	405 nm (customization available)
Quantum Yield	60-90%
Average Particle Size (FWHM)	12-18 nm (customization available)
Solvent	Toluene, IPA (customization available)
Application	QD-LED Application

Wide Emission Range and Size-Tunable Optical Properties

The emission wavelength of ZnSe/ZnS quantum dots can be precisely tuned between 400 and 600 nm by adjusting their particle size during synthesis, enabling tailored fluorescence from yellow to orange. This makes them exceptionally versatile for diverse photonic and imaging applications. Their distinct cubic or hexagonal crystal structure further enhances photoluminescence efficiency for demanding use cases.

High Quantum Yield and Structural Stability

With a quantum yield reaching up to 70%, these quantum dots deliver strong, stable emission. Core/shell heterostructures (ZnSe/ZnS), capped with oleic acid or TOPO, protect the core and extend shelf life (1224 months under proper storage). High purity ensures minimal background interference, while their inert-atmosphere stability suits sensitive analytical and bio-imaging applications.

Efficient Synthesis and Flexible Dispersibility

Manufactured using advanced colloidal synthesis, ZnSe/ZnS QDs achieve excellent consistency in particle size and emission properties. These nanoparticles disperse easily in a range of nonpolar organic solvents, facilitating incorporation into devices and research protocols without agglomeration. Their insolubility in water ensures robust performance in oil-based matrices and composite materials.

FAQs of Zinc Selenide /Zinc Sulphide Quantum Dots:

Q: How are Zinc Selenide/Zinc Sulphide Quantum Dots synthesized?

A: These quantum dots are produced via the colloidal synthesis method, allowing precise control over particle size (210 nm) and ensuring uniform emission properties. Surface capping agents like oleic acid or TOPO stabilize the nanomaterials and enhance dispersibility in organic solvents.

Q: What determines the emission color of ZnSe/ZnS quantum dots?

A: The emission wavelength, ranging from 400600 nm, is primarily determined by the particle sizesmaller dots emit towards the blue-violet end, while larger dots shift emission to yellow-orange. This size-dependent photoluminescence is a hallmark of quantum dot technology.

Q: Where can these quantum dots be used in practical applications?

A: ZnSe/ZnS quantum dots are utilized in optoelectronic devices, LED displays, photovoltaic cells, sensors, and fluorescent labeling for bio-imaging. Their high quantum yield and stable photoluminescence make them well-suited for advanced display technologies and analytical instruments.

Q: What are the storage requirements and shelf life for these quantum dots?

A: For optimal stability, store the quantum dots in tightly sealed containers, protected from moisture and light, under inert atmospheric conditions. When properly stored, they retain their properties for 1224 months.

Q: What benefits do these quantum dots offer over traditional luminescent materials?

A: Compared to conventional materials, ZnSe/ZnS quantum dots provide tunable and brighter emission, high quantum yield, enhanced stability, and compatibility with various nonpolar solvents. Their unique core/shell structure also ensures greater resistance to photobleaching and oxidation.

Q: Are these quantum dots toxic or hazardous for laboratory and industrial use?

A: Under recommended conditions, ZnSe/ZnS quantum dots are classified as non-toxic, odorless, and tasteless. However, general safe handling practices should be followed, especially during synthesis or large-scale processing.

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