Lead telluride

Lead telluride
Names
Other names
Lead(II) telluride
Altaite
Identifiers
ECHA InfoCard 100.013.862
Properties
PbTe
Molar mass 334.80 g/mol
Appearance gray cubic crystals.
Density 8.164 g/cm3
Melting point 924 °C (1,695 °F; 1,197 K)
insoluble
Band gap 0.25 eV (0 K)
0.32 eV (300 K)
Electron mobility 1600 cm2 V−1 s−1 (0 K)
6000 cm2 V−1 s−1 (300 K)
Structure
Halite (cubic), cF8
Fm3m, No. 225
a = 6.46 Angstroms



Octahedral (Pb2+)
Octahedral (Te2−)
Thermochemistry
Std enthalpy of
formation ΔfHo298		 -70.7 kJ·mol−1
Std enthalpy of
combustion ΔcHo298		 110.0 J·mol−1·K−1
Standard molar
entropy So298		 50.5 J·mol−1·K−1
Hazards
Flash point Non-flammable
Safety data sheet (SDS) External MSDS
Related compounds
Other anions
 Lead(II) oxide
Lead(II) sulfide
Lead selenide
Other cations
 Carbon monotelluride
Silicon monotelluride
Germanium telluride
Tin telluride
Related compounds
 Thallium telluride
Bismuth telluride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)
Infobox references

Lead telluride, also known as lead(II) telluride, is a chemical compound. Its chemical formula is PbTe. It contains lead and telluride ions. The lead is in the +2 oxidation state.

Properties

Lead telluride is a gray crystalline solid. It reacts with strong acids to make toxic hydrogen telluride and toxic lead salts.

Preparation

It may be made by melting lead and tellurium together.

Uses

It is used as a semiconductor and an infrared detector.

References

  1. ↑ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, Florida: CRC Press, pp. 4–65, ISBN 978-0-8493-0594-8
  2. ↑ CRC Handbook, pp. 5–24.
  3. ↑ Lawson, William D (1951). "A method of growing single crystals of lead telluride and selenide". J. Appl. Phys. 22 (12): 1444–1447. doi:10.1063/1.1699890.