Zinc Sulfide granules are a crucial II-VI group wide-bandgap compound semiconductor material. The product typically appears as white or pale yellow crystalline particles, exhibiting two common crystalline phases (cubic sphalerite and hexagonal chalcopyrite) and a wide direct bandgap of approximately 3.54–3.91 eV. It is renowned for its excellent light transmittance (particularly in the infrared spectrum), highly efficient photoluminescence properties, good chemical stability, and high hardness, making it a key foundational material in infrared optics, luminescent materials, and advanced ceramics.
We offer high-quality zinc sulfide particles with multiple purity options (e.g., 4N, 5N), crystal phases, particle size specifications, and surface treatment choices. Contact us for product documentation.
Wide direct bandgap semiconductor
Excellent infrared transmission properties
Highly efficient photoluminescence characteristics
High hardness and good chemical stability
Multiple crystal phases available
Infrared Optics & Windows: Used to manufacture high-performance lenses, windows, and radomes for infrared thermal imagers, night vision devices, and laser systems.
Light-Emitting and Display Materials: Serves as a matrix material doped with Ag, Cu, etc., for producing long-afterglow phosphors, electroluminescent displays, and LED phosphors.
Advanced Ceramics and Coatings: Used in manufacturing transparent ceramics, wear-resistant coatings, and specialty structural ceramics for harsh environments.
Catalysts and Additives: Serves as a photocatalyst for pollutant degradation or as a modifier in composite materials like plastics and rubber.
Q1: What are the differences between the two crystal phases of ZnS?
A1: The cubic phase (sphalerite) is stable at low temperatures, while the hexagonal phase (wurtzite) is stable at high temperatures. Both exhibit slight differences in optical and electrical properties, requiring selection based on application.
Q2: Why is ZnS suitable for infrared windows?
A2: It offers an extremely broad infrared transmission range (3-5μm and 8-14μm atmospheric windows), high hardness, and excellent thermal shock resistance.
Q3: How should the product be stored?
A3: Store in sealed containers, protected from light and moisture. Although chemically stable, prolonged exposure to humid air may cause gradual oxidation.
Q4: How should one choose between ZnS and ZnSe for infrared applications?
A4: ZnS offers higher hardness and greater wear resistance, while ZnSe provides superior transmission and lower absorption in the mid-to-far infrared bands. Selection depends on specific wavelength requirements and mechanical strength needs.
Each batch is supplied with:
Certificate of Analysis (COA)
Technical Data Sheet (TDS)
Material Safety Data Sheet (MSDS)
Third-party testing reports available upon request
We possess deep technical expertise in sulfide optical materials, enabling us to provide you with high-purity, high-performance zinc sulfide particles in a comprehensive range of specifications.
Molecular Formula: ZnS
Molecular Weight: 97.45 g/mol
Appearance: White to pale yellow granules
Density: 4.09 g/cm³
Melting Point: 1,850 °C
Boiling Point: 2,200 °C (before decomposition)
Crystal Structure: Two crystal forms: Cubic Zinc Blende (F-43m) and Hexagonal Wurtzite (P6₃mc)
Inner Packaging: Vacuum-sealed bags and boxed to prevent contamination and moisture.
Outer Packaging: Cartons or wooden crates selected based on size and weight.
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