Aug 16 2013
Topics Covered
Description
Applications
Chemical Properties
Electrical Properties
Thermal and Mechanical Properties
Safety Information
Description
Lead selenide is a semiconductor material that forms cubic crystals similar to the structure of NaCl . It performs efficiently at low temperatures, without the need for cooling. It naturally occurs in the mineral clausthalite and can be formed by a direct reaction between lead and selenium. Its peak sensitivity depends on temperature and varies between 3.7 and 4.7µm.
Applications
Lead selenide finds applications in the following:
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Infrared detectors for thermal imaging
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Gas analysis
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Hot spot detection
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Industrial process and quality control
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Defense applications
Chemical Properties
The chemical properties of lead selenide are provided in the table below:
Chemical Properties |
Chemical Formula |
PbSe |
Molecular Weight |
286.16 |
CAS No. |
12069-00-0 |
Group |
Lead – 14
Selenium – 16 |
Crystal Structure |
Cubic |
Lattice Constant |
6.1243 Å |
Electrical Properties
The electrical properties of lead selenide are provided in the table below:
Electrical Properties |
Band Gap |
0.26 eV |
Electron Mobility |
1000 cm2/Vs |
Hole Mobility |
900 cm2/Vs |
Thermal and Mechanical Properties
The thermal and mechanical properties of lead selenide are provided in the tables below:
Thermal Properties |
Heat of Formation |
393 kJ/mol |
Thermal Conductivity |
1.70 W/mK |
Mechanical Properties |
Density |
8.15 g/cm3 |
Melting Point |
1067°C |
Safety Information
Safety Information |
GHS Hazard Statements |
H301 + H331 - Toxic if swallowed or if inhaled
H302 + H332 - Harmful if swallowed or if inhaled
H360Df - May damage the unborn child. Suspected of damaging fertility
H373 - May cause damage to organs through prolonged or repeated exposure
H410 - Very toxic to aquatic life with long lasting effects. |
Safety Precautions |
P201 - Obtain special instructions before use
P261 - Avoid breathing dust
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. |