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Lutetium-doped Bi2Te3 flower-like nanopowders were synthesized by hydrothermal method. The flower-like nanopowders were hot pressed into bulk pellets and the doping effects of lutetium on the thermoelectrical properties were investigated. The results show that the doping of lutetium can reduce the electrical resistivity greatly, while does not reduce the Seebeck coefficient too much, therefore results...
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