Abstract: Single-phase n-type (AgIn)xPb1-2xTe compounds were synthesized using the melting reaction method.Influences of (AgIn) substituting for Pb on the constituent phases and thermoelectric properties of the (AgIn)xPb1-2xTe(x=0.01~0.05) were investigated.Results indicate that single phase compound is obtained when the (AgIn) substitution fraction x≤0.04.However,the second phase (AgInTe2) was observed in the sample withx=0.05.The Seebeck coefficient increases gradually with the increasing of the (AgIn) substitution fraction x,and the electrical conductivity of the compounds decreases with the increasing of x.Thermal conductivity decreases with the increasing of x.In all of the n-type (AgIn)xPb1-2xTe compounds,(AgIn)0.01Pb0.98Te compound has the greatest ZT value,reaching 1.1 at 800K.

Key words: (AgIn)xPb1-2xTe, synthesis, thermoelectric properties