Optical material of zinc sulfide


What is zinc sulfide?

Zinc sulfide (or zinc sulfide) is an inorganic compound with the chemical formula of ZnS. This is the main form of zinc found in nature, where it mainly occurs as the mineral sphalerite. Although this mineral is usually black because of various impurities, the pure material is white and widely used as a pigment. In its dense synthetic form, zinc sulfide can be transparent and is used as a window for visible and infrared optics. ZnS exists in two primary crystalline forms. This dualism is an example of polymorphism. In each form, the coordination geometry at Zn and S is tetrahedral. The more stable cubic form is also known as zinc blende or sphalerite. The hexagonal form is known as the mineral wurtzite, although it also can be produced synthetically. The transition from the sphalerite to the wurtzite form occurs at around 1020 °C. A tetragonal form is a scarce mineral called polhemusite, with the formula (Zn, Hg)S.


Luminescent material of zinc sulfide

Zinc sulfide exhibits intense phosphorescence with the addition of a few ppm of suitable activator. The phenomenon was described by Nikola Tesla in 1893[3]), and is currently used in many applications, from cathode ray tubes through X-ray screens to glow-in-the-dark products. When silver is used as an activator, the resulting color is bright blue, with a maximum of 450 nanometers. Using manganese yields an orange-red color at around 590 nanometers. Copper gives a long-time glow, and it has the familiar greenish glow-in-the-dark. Copper-doped zinc sulfide ("ZnS plus Cu") is also used in electroluminescent panels. It also exhibits phosphorescence due to impurities on illumination with blue or ultraviolet light.


Optical material of zinc sulfide

Zinc sulfide is also an infrared optical material, transmitting from visible wavelengths to just over 12 micrometers. It can be used planar as a visual window or shaped into a lens. It is made as microcrystalline sheets by the synthesis from hydrogen sulfide gas and zinc vapor, and this is sold as FLIR-grade (Forward Looking Infrared), where the zinc sulfide is in a milky-yellow, opaque form. This material, when hot, isostatically pressed (HIPed) and can be converted to a water-clear format known as Cleartran (trademark). Early commercial forms were marketed as Irtran-2, but this designation is now obsolete.


Price of zinc sulfide

Zinc sulfide particle size and purity will affect the product's Price, and the purchase volume can also affect the cost of Zinc sulfide. A large amount of large amount will be lower. The Price of zinc sulfide is on our company's official website.


Zinc sulfide supplier

Mis-Asia is a reliable and high-quality global chemical material supplier and manufacturer. It has over 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including zinc sulfide, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective zinc sulfide, you are welcome to contact us or inquire any time.

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