Enhanced thermoelectric performance of p-type SnSe doped with Zn

In this study, we have synthesized SnSe doped with zinc (Zn) and investigated the effect of Zn doping on the thermoelectric properties of SnSe. The results demonstrate that a high thermoelectric figure of merit (ZT) of 0.96 at 873 K is obtained for Zn0.01Sn0.99Se, which is 41% higher than that of pure SnSe (ZT = 0.68). The value is the highest value reported for p-type polycrystalline doped SnSe materials, which arises from the increased power factor coming from a high electrical conductivity and an enhanced Seebeck coefficient.

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