Zinc Sulfide (ZnS)

 
Application fields: IR optics; substrates; evaporation sources
Growth methods: HPVB / HPVZM
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 oC): 0.16 W/cmK
Max. Transmittance (l =7-12 mm): ³ 71 %
Absorption Coef. (l =10.6 mm): £ 0.1 cm-1 (including 2 surfaces)
Thermo-Optic Coef. (dn/dT): 4.7 (l =10.6 mm)
Refractive index (l =10.6 mm): 2.34
Electrooptical coefficient r41 (l =10.6 mm): 2´10-12 m/V
Max. crystal diameter/length: Æ 38´30 mm

ZnS refractive index

Wavenumber, cm-1
n
Wavenumber, cm-1
n
3400
2.380
1400
2.361
3200
2.380
1250
2.357
2800
2.378
1000
2.336
2400
2.377
880
2.316
2100
2.376
800
2.297
1900
2.373
690
2.251

Transmittance spectra

ZnS single crystals


Typical concentration of impurities in the ZnS crystals by GDMS (PDF file)

Material Safety Data Sheet