Abstract

Thermoelectric properties of ZrCuSiAs-typed Ce1−xSrxZnSbO (x = 0, 0.04, 0.08, 0.10) ceramic samples were investigated in the temperature range from 330 K to 727 K. Thermal conductivity is extremely low in the pristine CeZnSbO, and increases after Sr doping. In addition, with the rare-earth cations doped by alkaline-earth metals, the power factor and figure of merit ZT are significantly enhanced. In our research, a ZT value of 0.12 was achieved at 727 K for the sample with a composition of Ce0.92Sr0.08ZnSbO. Although the figure of merits of CeZnSbO materials are not very impressive compared to other regular TE materials, it still provide a new type of interesting TE compounds formed between intermetallics and oxides.

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