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ZINC SELENIDE, ZnSe
Zinc Selenide is used for optical windows, lenses, mirrors and prisms
particularly for infrared applications.
The transmission range is 0.6 µm - 20 µm.
Main Properties
| Chemical Formula |
ZnSe |
| Molecular Weight |
144.33 |
| Crystal Class |
Cubic, hexagonal |
| Crystal Structure |
Polycrystalline |
| Density, g/cm3 at 293 K |
5.27 |
| Melting Temperature, K |
1790 |
| Thermal Conductivity, W/(m K) at 300 K |
18 |
Thermal Expansion, 1/K
at 173 K
at 273 K
at 473 K |
5.6 x 10-6
7.1 x 10-6
8.3 x 10-6 |
| Specific Heat, cal/(g K) at 296 K |
0.081 |
| Debye Temperature, K |
246 |
| Bandgap, eV |
2.7 |
| Solubility in water at 298 K |
0.001 g/100 g H2O |
| Knoop Hardness, kg/mm2(100 g load) |
105 |
| Young's Modulus, GPa |
70 |
| Bulk Modulus, GPa |
40 |
| Poisson's Ratio |
0.28 |
ZnSe CVD Transmittance (10 mm light path)
Refractive Index
|
Wavelength, µm |
2.75 |
5.00 |
7.50 |
9.50 |
11.0 |
12.5 |
13.5 |
15.0 |
16.0 |
16.9 |
17.8 |
18.6 |
19.3 |
20.0 |
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Refractive Index |
2.44 |
2.43 |
2.42 |
2.41 |
2.40 |
2.39 |
2.38 |
2.37 |
2.36 |
2.35 |
2.34 |
2.33 |
2.32 |
2.31 |
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