| High Thermoelectric Properties of PbTe Doped with Bi2Te3 and Sb2Te3 |
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| 作者姓名： | 朱品文 今井义雄 矶田幸宏 筱原嘉一 贾晓鹏 邹广田 |
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| 作者单位： | [1]Eco-materialResearchCenter,NationalInstituteforMaterialsScience,Tsukuba305-0047,Japan／／NationalLaboratoryofSuperhardMaterials,JilinUniversity,Changchun130012 [2]Eco-materialResearchCenter,NationalInstituteforMaterialsScience,Tsukuba305-0047,Japan [3]NationalLaboratoryofSuperhardMaterials,JilinUniversity,Changchun130012 |
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| 摘 要： | The composition-dependent thermoelectric properties of lead telluride (PbTe) doped with bismuth telluride (Bi2Te3), antimony telluride (Sb2Te3) and (BiSb)2Te3 have been studied at room temperature. All the sampies exhibit small thermal conductivity. The figures of merit, 7.63, 1.03 and 8.97 x 10-4, have been obtained in PbTe with these dopants, respectively. These values are several times higher than those of PbTe containing other dopants with small grain sizes. The high thermoelectric performance is explained by electronic topological transition induced by alloying. The results indicate that these dopants are effective to enhance the thermoelectric performance of PbTe.
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| 关 键 词： | 热电性质 碲化物 空间温度 传导率 |
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