Apr 19 2013
Topics Covered
Description
Applications
Chemical Properties
Electrical Properties
Thermal, Mechanical and Optical Properties
Safety Information
Description
Zinc selenide is a light yellow binary solid compound that rarely occurs in nature. It is a chemically inert, non-hygroscopic and highly pure material largely found in the mineral stilleite. It is effective in many optical applications owing to its high resistance to thermal shock, stability in virtually all environments and extremely low bulk losses.
Applications
Zinc selenide finds applications in the following:
- Light emitting diodes
- Infrared laser gain medium
- X-ray and gamma ray detectors
- Optical windows
- Lenses
- Mirrors.
Chemical Properties
The chemical properties of zinc selenide are provided in the table below:
| Chemical Properties |
| Chemical Formula |
ZnSe |
| Molecular Weight |
144.35 |
| CAS No. |
1315-09-9 |
| Group |
Zinc – 12
Selenium - 16 |
| Crystal Structure |
Cubic |
| Lattice Constant |
5.6676 Å |
Electrical Properties
The electrical properties of zinc selenide are provided in the table below:
| Electrical Properties |
| Dielectric Constant |
9.2 |
| Band Gap |
2.58 eV |
| Electron Mobility |
540 cm2/Vs |
| Hole Mobility |
28 cm2/Vs |
Thermal, Mechanical and Optical Properties
The thermal, mechanical and optical properties of zinc selenide are provided in the tables below:
| Thermal Properties |
| Heat of Formation |
422 kJ/mol |
| Thermal Expansion Coefficient |
720 µm/m°C |
| Specific Heat Capacity |
0.339 J/g°C |
| Thermal Conductivity |
14 W/mK |
| Mechanical Properties |
| Melting Point |
1517°C |
| Density |
5.42 g/cm3 |
| Young’s Modulus |
67.2 GPa |
| Bulk Modulus |
40 GPa |
| Poisson Ratio |
0.28 |
| Knoop Microhardness |
1350 |
| Optical Properties |
| Transmission Range |
0.5 – 20 microns |
| Refractive Index |
2.89 |
Safety Information
| Safety Information |
| GHS Hazard Statements |
H301 - Toxic if swallowed
H331 - Toxic if inhaled
H373 - May cause damage to organs through prolonged or repeated exposure
H410 - Very toxic to aquatic life with long lasting effects. |
| Safety Precautions |
P261 - Avoid breathing dust/ fume/ gas/ mist/ vapors/ spray
P273 - Avoid release to the environment
P301 + P310 - IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
P311 - Call a POISON CENTER or doctor/ physician
P501 - Dispose of contents/ container to an approved waste disposal plant. |