Energy spectrum of charge carriers in Ag2Te

On the basis of investigations of the temperature and concentration dependences of kinetic coefficients (the Hall coefficientR, the electrical conductivity sigma, and thermopower alpha(0)) in n-type Ag2Te, it is established that Ag atoms in Ag2Te create the shallow donor levels located at a distance of (0.002-7 x 10(-5) T) eV from the bottom of the conduction band. It is shown that silver telluride has n-type conductivity starting with the deficiency of Ag a parts per thousand yen 0.01 at % in the stoichiometric composition, and it is practically impossible to achieve the stoichiometric composition in Ag2Te.