Improvement in Thermoelectric Performance of PbSe via Te/Cr Co-doping
In this work,Cr was added to the Pb site of PbSe to regulate the effective mass of charge carriers,and Te was added to the Se site to adjust the concentration of charge carriers by using high-temperature solid-phase method and rapid hot pressing process.Thus,the carrier mobility of the host material was synergistically optimized,and the final obtained Pb0.97Cr0.03Se0.94Te0.06 thermoelectric material had a ZT of 0.44 at 673K,which was 4.89 times that of the undoped sample PbSe.
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