Zinc Sulfide (ZnS)
Zinc sulfide, or ZnS, is an exceptional semiconductor material that usually comes in solid form, ranging in color from white to light yellow. It’s highly valued for its purity and versatility, playing a crucial role in technology across different industries. This material is essential in applications such as anti-counterfeiting holograms and specialized coatings, thanks to its unique characteristics.
Specifications of ZnS
| Shape | Color | Purity | Package | Storage | ||
|---|---|---|---|---|---|---|
| Sinter | Tablet | 10×6 mm 20×15 mm 30×17 mm | White to light yellow | 99.9% 99.99% | 1 Kg/Bag | Avoid exposure to sunlight & acid Keep dry |
| Cuboid piece | 80x45x30 mm | |||||
| Granule | 1-40 mm | |||||
| Crystal | Granule | 11-40 mm Upon demand | Light yellow, semitransparent | 99.99% | ||
| Cutting piece | 10x10x10 mm 25x25x12 mm |
|||||
Characteristics of zinc sulfide
| CAS Number | Density (g/cm3) | Boiling point (Cº) | Melting point (Cº) | Refractive index at 550 (nm) | Transparency range (µm) | Evaporation source |
|---|---|---|---|---|---|---|
| 1314-98-3 | 4.1 | / | 1830 | 2.2-2.4 | 0.35-14.5 | E |
| Applications | 1. ZnS Sinter: Holographic anti-counterfeiting film, Coating 2. ZnS Crystal: Cold light coating; Filter; HR coating; Decoration coating |
|||||
Evaporation technique of Zinc Sulfide
Zinc sulfide can be evaporated by electron beam from a molybdenum or tantalum crucible liner. It is usually deposited in a dedicated vacuum chamber because zinc and sulphur have high vapor pressures at low temperatures.