Silver telluride (Ag<sub>2</sub>Te) 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 Ag<sub>5</sub>Te<sub>3</sub>.
Silver telluride is a semiconductor which can be doped both n-type and p-type. Stoichiometric Ag<sub>2</sub>Te has n-type conductivity. On heating silver is lost from the material.
Non-stoichiometric silver telluride has shown extraordinary magnetoresistance.
Silver(I) telluride occurs naturally as the mineral hessite, whereas silver(II) telluride is known as empressite. A silver gold telluride occurs as sylvanite.
Porous silver telluride (AgTe) is synthesized by an electrochemical deposition method. A potentiostat and a three-electrode cell with sulfuric acid electrolyte containing Ag nanoparticles at are used. A silver paste used in the tungsten ditelluride (WTe<sub>2</sub>) attachment leaches into the electrolyte, causing Ag to dissolve in the electrolyte. The electrolyte is stirred to remove hydrogen bubbles. A silver-silver chloride electrode and a platinum wire can be used as reference and counter electrodes. In order to grow the porous AgTe, the WTe<sub>2</sub> is treated with cyclic voltammetry.
Glutathione-coated Ag<sub>2</sub>Te nanoparticles can be synthesized by preparing a solution containing AgNO<sub>3</sub>, Na<sub>2</sub>TeO<sub>3</sub>, and glutathione. N<sub>2</sub>H<sub>4</sub> is added under stirring in an ice bath. The resulting product is washed for purification.