选用高纯的Bi粉、Se粉、Cu粉、CuO、CaO、NiO作为原材料,采用固相结合放电等离子烧结制备不同成分的样品,测试了不同成分样品从室温RT到823 K不同温度下热电传输性能.研究结果表明,通过在Bi位掺杂Ca、Cu位掺杂Ni,可以有效的调控材料的热电性能.Bi0.94Ca0.06Cu0.94Ni0.06SeO在823 K时,电导率达到最高值5300 S·m-1,远高于BiCuSeO的电导率1100 S·m-1.同时,样品具有较低的热导率(0.9 ～0.4 W·m-1·K-1)和较高的Seebeck系数(200～250 μV·K-1).Ca、Ni双掺BiCuSeO体系中Bi0.94Ca0.06Cu0.94Ni0.06SeO的热电优值(ZT)在823 K时达到最大值0.55.
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