Enhanced thermoelectric performance of AgSbSe2 via manganese doping

摘要

AgSbSe(2 )exhibits promising thermoelectric performance due to its original low thermal conductivity. Herein, we first investigate the influence of Mn doping on the thermoelectric transport behavior of AgSbSe2. The results display that the substitution of Mn(2+ )in the Sb3+ sublattice increases the carrier concentration and reduces the lattice thermal conductivity, finally leading to a high ZT value of similar to 1.05 at 673 K and ZT(ave) of similar to 0.63 from 300 to 673 K for AgSb(0.96)Mn0(.04)Se(2). The efficiency of similar to 8.8% obtained here is of great significance for practical application.

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