Lead telluride

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Lead telluride[1][2] [3]
Names
Other names
Lead(II) telluride
Altaite
Identifiers
1314-91-6 YesY
PubChem 4389803
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
50.5 J·mol−1·K−1
-70.7 kJ·mol−1
110.0 J·mol−1·K−1
Hazards
Safety data sheet External MSDS
EU classification Repr. Cat. 1/3
Harmful (Xn)
Dangerous for the environment (N)
R-phrases R61, R20/22, R33, R62, R50/53
S-phrases S53, S45, S60, S61
Flash point Non-flammable
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 isYesY/N?)
Infobox references

Lead telluride (Phoebe) is a compound of lead and tellurium (PbTe); it is a narrow gap semiconductor. It occurs naturally as the mineral altaite.

Properties[edit]

Applications[edit]

It is often alloyed with tin to make lead tin telluride, which is used as an infrared detector material.

Lead telluride has good performance as a thermoelectric material, partly due to a low thermal conductivity and partly due to its electrical properties. It has peak thermoelectric performance at high temperature and was used in spacecraft power applications. [4]

References[edit]

  1. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–65, ISBN 0-8493-0594-2 
  2. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 5–24, ISBN 0-8493-0594-2 
  3. ^ Lawson, William D (1951), "A method of growing single crystals of lead telluride and selenide", Journal of Applied Physics, J . Appl. Phys. 22 (12): 1444–7, doi:10.1063/1.1699890 
  4. ^ Wood, C. (1988). "Materials for thermoelectric energy conversion". Reports on Progress in Physics 51 (4): 459. doi:10.1088/0034-4885/51/4/001.  edit

External links[edit]