Silver telluride

Silver telluride
Other names Hessite
Identifiers
CAS number	12002-99-2
Properties
Molecular formula	Ag2Te
Molar mass	341.3364 g/mol
Appearance	grey-black crystals
Density	8.318 g/cm³
Melting point	955 °C
Structure
Crystal structure	Monoclinic, mP12
Space group	P21/c, No. 14
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

Silver telluride (Ag₂Te) is a chemical compound, a telluride of silver, also known as disilver telluride or silver(I) telluride. It forms a monoclinic crystal. In a wider sense, silver telluride can be used to denote AgTe (silver(II) telluride, a metastable compound) or Ag₅Te₃.

Silver(I) telluride occurs naturally as the mineral hessite, whereas silver(II) telluride is known as empressite.

Silver telluride is a semiconductor which can be doped both n-type and p-type. Stochoimetric Ag₂Te has n-type conductivity. On heating silver is lost from the material.

Non-stoichiometric silver telluride has shown extraordinary magnetoresistance.

References

• Aliev, F. F. (2002). Inorganic Materials 38 (10): 995. doi:10.1023/A:1020512918319. 
• Chuprakov, I. S.; Dahmen, K. H. (1998). "Large positive magnetoresistance in thin films of silver telluride". Applied Physics Letters 72 (17): 2165. doi:10.1063/1.121309. 
• Dalven, Richard (1966). "Fundamental Optical Absorption in β-Silver Telluride". Physical Review Letters 16 (8): 311. Bibcode 1966PhRvL..16..311D. doi:10.1103/PhysRevLett.16.311. 

See also

• Hessite
• Empressite
• Sylvanite

Related materials

• Silver selenide
• Silver sulfide