Zinc selenide



Zinc selenide
Other names zinc(II) selenide
Identifiers
CAS number 1315-09-9
Properties
Molecular formula ZnSe
Molar mass 144.35 g/mol
Appearance light yellow solid
Density 5.27 g/cm3, solid
Melting point

1525 °C

Boiling point

°C

Solubility in water Insoluble
Thermochemistry
Std enthalpy of
formation ΔfHo298 		−177.6 kJ/mol
Standard molar
entropy So298 		 ???? J.K−1.mol−1
Hazards
MSDS Oxford University Safety Data
EU classification Dangerous for
the environment (N)
R-phrases R20 R22 R36 R38 R23/R25 R33
Related Compounds
Other anions Zinc sulfide
Zinc telluride
Other cations Mercury selenide
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references

Zinc selenide (lattice constant a=566.8 picometers.

ZnSe rarely occurs in nature. It is found in the stilleite named after Hans Stille.

Applications

  • ZnSe is used to form II-VI nitrogen.
  • ZnSe doped with chromium (ZnSe:Cr) has been used as an infrared laser gain medium emitting at about 2.5 µm.[1]
  • It is used as an infrared optical material with a remarkably wide transmission wavelength range (0.6 µm to 20 µm). The spectroscopy or at the brewster angle, antireflection or beamsplitting coatings are generally employed.
  • ZnSe doped with gamma ray detectors. ZnSe scintillators are significantly different from the ZnS ones.

Chemistry

ZnSe reacts with acids to form toxic hydrogen selenide gas.

It is grown by MOVPE.

See also

References

  1. ^ Cr2+ excitation levels in ZnSe and ZnS, G. Grebe, G. Roussos and H.-J. Schulz, J. Phys. C: Solid State Phys. vol. 9 pp. 4511-4516 (1976) doi:10.1088/0022-3719/9/24/020
 
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