Lead Selenide (PbSe) Semiconductors

Topics Covered

Chemical Properties
Electrical Properties
Thermal and Mechanical Properties
Safety Information


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.


Lead selenide finds applications in the following:

  • Infrared detectors for thermal imaging
  • Gas analysis
  • Hot spot detection
  • Industrial process and quality control
  • 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.

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