通过高温高压方法,成功地合成出了立方相(PbTe1.04)100-y(PbI2)y(0≤y≤ 0.065)体热电材料.在常温常压下,对样品的一系列电学性质进行了测试与研究.结果表明,随着掺杂量的增加,Seebeck系数的绝对值和电阻率均显著地减小.当y=0.015时,热电材料的功率因子达到最大值24.2μW/(cm·K2),它远远大于常压下合成PbTe掺杂PbI2的功率因子.以上结果说明,高温高压结合微量掺杂的方法可以有效地提高PbTe材料的电学输运性能.
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