Back تيلوريد الرصاص Arabic تلورید قورغوشون AZB Tel·lurur de plom Catalan Bleitellurid German Telururo de plomo Spanish تلورید سرب Persian Tellurure de plomb(II) French लेड(II) टेल्यूराइड Hindi テルル化鉛 Japanese Tellurek ołowiu(II) Polish
| Names | |
|---|---|
| Other names
Lead(II) telluride
Altaite | |
| Identifiers | |
| ChemSpider | |
| ECHA InfoCard | 100.013.862 |
| EC Number |
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PubChem CID
|
|
| UNII | |
CompTox Dashboard (EPA)
|
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| 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 molar
entropy (S⦵298) |
50.5 J·mol−1·K−1 |
Std enthalpy of
formation (ΔfH⦵298) |
-70.7 kJ·mol−1 |
Std enthalpy of
combustion (ΔcH⦵298) |
110.0 J·mol−1·K−1 |
| Hazards | |
| GHS labelling: | |
  
| |
| Danger | |
| H302, H332, H351, H360, H373, H410 | |
| P201, P202, P260, P261, P264, P270, P271, P273, P281, P301+P312, P304+P312, P304+P340, P308+P313, P312, P314, P330, P391, P405, P501 | |
| 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).
| |
Lead telluride is a compound of lead and tellurium (PbTe). It crystallizes in the NaCl crystal structure with Pb atoms occupying the cation and Te forming the anionic lattice. It is a narrow gap semiconductor with a band gap of 0.32 eV.[4] It occurs naturally as the mineral altaite.
- ^ 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
- ^ CRC Handbook, pp. 5–24.
- ^ 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.
- ^ Kanatzidis, Mercouri G. (2009-10-07). "Nanostructured Thermoelectrics: The New Paradigm? †". Chemistry of Materials. 22 (3): 648–659. doi:10.1021/cm902195j.