Microstructure and thermoelectric properties of cubic AgPb18Sb1-xTe20 (x=0.1, 0.3, 0.5)compounds

摘要：

Preparation, microstructure and thermoelectric properties of the bulk (AgSbTe2)m (PbTe)n family of compounds AgPb18 Sb1-xTe20 with x=0.1, 0.3 and 0.5 have been studied. More homogeneous samples with the absence of nanosized inhomogeneity were obtained by quenching the melts in liquid nitrogen. The Seebeck coefficients of AgPb18Sb1-xTe20 were negative, indicating n-type conduction behavior. The highest power factor of PF=0.25×10-3W m-1 K-2 is found for the sample AgPb18Sb0.9Te20 at 470K. The influence of Sb content in the AgPb18Sb1-xTe20 compounds was also investigated. The results suggested that the preparation conditions, microstructure and compositions strongly affect the thermoelectric properties of this series of compounds.

作者: F Yan T J Zhu S H Yang X B Zhao

作者单位: State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, Peoples Republic of China

会议类型: 国际会议

会议名称: 第二届功能原料国际研讨会(The 2rd International Symposium on Functional Materials)

会议地点: 杭州

会议语种:英文

页码: 116-119

在线出版日期: 2007-05-16（万方平台首次上网日期，不代表论文的发表时间）