Characteristic

 

Antimony telluride is an inorganic compound with the chemical formula Sb2Te3. As is true of other pnictogen chalcogenide layered materials, it is a grey crystalline solid with layered structure.

Chemical formula：Sb₂Te₃

Molar mass：626.32 g·mol⁻¹

Appearance：grey solid

Density：6.50 g cm⁻³

Melting point：620 °C (1,148 °F; 893 K)

Band gap：0.21 eV

Thermal conductivity：1.65 W/(m·K) (308 K)

Crystal structure：Rhombohedral, hR15

 

Application

 

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.

Doping Sb₂Te₃ with iron introduces multiple Fermi pockets, in contrast to the single frequency detected for pure Sb₂Te₃, and results in reduced carrier density and mobility.

Sb₂Te₃ forms the pseudobinary intermetallic system germanium-antimony-tellurium with germanium telluride, GeTe.

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

Sb2Te3_MSDS.pdf