Improved thermoelectric properties in n-type polycrystalline SnSe_0.95 by PbCl₂ doping

Abstract

Polycrystalline tin selenide (SnSe) has attracted extensive attentions because of the higher mechanical performance and simpler preparation conditions than its single crystal. However, the low carrier concentration severely limits the...

A new thermoelectric Ag8SiSe6argyrodite for room temperature application: sensitivity of thermoelectric performance to cooling conditions

“…3 In recent years, several strategies, including modulation doping, inducing resonant levels, and band convergence, have been adopted to obtain higher electrical properties and power factors for relevant materials. These enhancements have been verified in SnSe, 4 PbTe, [5][6][7] Bi 2 Te 3 , 8 and BiCuSeO. 9 To optimize the thermal conductivity, strategies such as the incorporation of nano-inclusions, secondary phase recombination, and lattice anharmonicity have been introduced, and have been successfully applied to reduce the thermal conductivity of thermoelectric materials such as Bi 2 Te 3 , 10 CoSb 3 , 11 Cu 3 SbSe 4 , 12 AgSbTe 2 , 13 SnTe, 14 and Ag 8 SnSe 6 .…”