Abstract
Ce-doped Ce x Bi2-x Te3 (x = 0, 0.1, 0.2, 0.3) flower-like nanoparticles were synthesized by a hydrothermal method through a careful adjustment of the amount of ethylenediamine tetraacetic acid surfactant. The nanopowders of flower-like nanoparticles were hot-pressed into bulk pellets and the thermoelectric properties of the pellets examined. The results showed that Ce-doping increased the power factor effectively at low temperature; however, the thermal conductivity of the nanopowder too increased because of the lighter atomic mass of Ce compared to Bi. As a result, a ZT value of 1.22, higher than that of the undoped sample, was attained at 386 K for the Ce0.1Bi1.9Te3 sample.
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Wu, F., Shi, W. & Hu, X. Preparation and thermoelectric properties of flower-like nanoparticles of Ce-Doped Bi2Te3 . Electron. Mater. Lett. 11, 127–132 (2015). https://doi.org/10.1007/s13391-014-4139-x
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DOI: https://doi.org/10.1007/s13391-014-4139-x