Antimony telluride

Antimony telluride
Other names antimony telluride, antimony(III) telluride, antimony telluride, diantimony tritelluride
Identifiers
CAS number	1327-50-0 Y
PubChem	6369653
ChemSpider	21241420 Y
Jmol-3D images	Image 1
SMILES [SbH3+3].[SbH3+3].[TeH2-2].[TeH2-2].[TeH2-2]
InChI InChI=1S/2Sb.3Te/q2*+3;3*-2 Y Key: RSPNQEPAQCYWKS-UHFFFAOYSA-N Y InChI=1/2Sb.3Te/q2*+3;3*-2 Key: RSPNQEPAQCYWKS-UHFFFAOYAT
Properties
Molecular formula	Sb2Te3
Molar mass	626.32 g mol−1
Appearance	grey solid
Density	6.50 g cm−3[1]
Melting point	580 °C[1]
Related compounds
Other anions	Sb2O3 Sb2S3 Sb2Se3
Other cations	Y telluride (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Antimony telluride is an inorganic compound with the chemical formula Sb₂Te₃. It is a grey, crystalline solid, although its melting point, density and colour may depend on the crystalline form it adopts.

Synthesis

Antimony telluride can be formed by the reaction of antimony with tellurium at 500–900 °C.^[1]

2Sb(l) + 3Te(l) → Sb₂Te₃(l)

Applications

Like other binary chalcogenides of antimony and bismuth, Sb₂Te₃ has been investigated for its semiconductor properties. It can be transformed into both n-type and p-type semiconductors by doping with an appropriate dopant.^[1]

Sb₂Te₃ forms the pseudobinary intermetallic system germanium-antimony-tellurium with germanium telluride, GeTe.^[2]

Like bismuth telluride, Bi₂Te₃, antimony telluride has a large thermoelectric effect and is therefore used in solid state refrigerators.^[1]

References

1. ^ ^{a b c d e} Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Oxford: Butterworth-Heinemann. pp. 581–582. ISBN 0080379419. 
2. ^ Wełnic, Wojciech; Wuttig, Matthias (2008). "Reversible switching in phase-change materials". Materials Today 11 (6): 20–27. doi:10.1016/S1369-7021(08)70118-4.