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Nanoparticles of Zn_0.85Al_0.15Te and Pb_0.98Na_0.02Te were used as the starting materials to prepare p-type Pb_0.833Na_0.017(Zn_0.85Al_0.15)_0.15Te-Te composite. The resulting powder was densified, sintered at 380 °C for 24 h in an evacuated and encapsulated ampoule and its thermoelectric transport property was characterized between 300 K and 600 K. At 300 K, the electrical resistivity of Pb_0.833Na_0.017(Zn_0.85Al_0.15)_0.15Te-Te composite is 4.2 mΩ-cm; exhibits nonmetal-like behavior from 300 K to 375 K and degenerate behavior beyond 375 K. The temperature dependence of the electrical conductivity shows deviation from the normal power law (1/T^δ, δ ≈ 1.84–2.27 for lead chalcogenides), suggesting a sharp drop in mobility in 425 K–600 K which is ascribed to defects, grain boundaries, and potential energy fluctuation due to atomic disorders. The maximum thermopower of Pb_0.833Na_0.017(Zn_0.85Al₀ …