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ZnSeZinc sulfide is commonly used for IR optics, substrates and as a source for evaporation. 

Basic properties

Structure: Cubic (zincblende)
Density:  4.08 g/ cm3
Knoop Hardness: 210 kg/ mm2
Young’s Modulus: 10.8 Mpsi
Poisson Ratio: 0.27
Coef. of Thermal Expansion: 6.8×10-6/K
Specific Heat: 0.469 J/gK
Thermal conductivity (at 25 °C): 0.16 W/cmK
Max. Transmittance (λ=7-12 μm): ≥ 71 %
Absorption Coef. (λ=10.6 μm): ≤0.15 cm-1(including 2 surfaces)
Thermo-Optic Coef. (dn/dT): 4.7 (λ =10.6 μm)
Refractive index (λ=10.6 μm): 2.34
Electrooptical coefficient r41 (λ=10.6 μm): 2×10-12 m/V
Max. crystal diameter/length: ø38×30 mm

ZnS Transmission

ZnS Transmittance


ZnS rods, wafers and substrates

Diameter/Width 1-38 mm
Thickness/length 0.1-150 mm
Orientation (110)
Surface quality As-cut, 80/50, 60/40 per MIL-0-13830

ZnS crystal pieces for vapour deposition.

Purity 99.995%, 99.999%
Particle size 0.01- 10 mm



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