Effects of Ag-doped content on the microstructure and thermoelectric properties of CoSb3 thin films

In this work, Ag doped CoSb3 thin films were grown directly on the heated substrate by the simple and effective magnetron sputtering process. The micro-structure and thermoelectric properties of the doped thin films are found to strongly depend on the Ag doping content. High-resolution transmission...

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Bibliographic Details
Published in:Thin solid films 2019-06, Vol.679, p.49-54
Main Authors: Fan, Ping, Wei, Meng, Zheng, Zhuang-hao, Zhang, Xiang-hua, Ma, Hong-li, Luo, Jing-ting, Liang, Guang-xing
Format: Article
Language:English
Subjects:
Cobalt antimonide
Doping
Silver
Thermoelectricity
Thin films
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Summary:In this work, Ag doped CoSb3 thin films were grown directly on the heated substrate by the simple and effective magnetron sputtering process. The micro-structure and thermoelectric properties of the doped thin films are found to strongly depend on the Ag doping content. High-resolution transmission electron microscope image and corresponding selected-area electron diffraction pattern confirm that the doped thin film has single CoSb3 crystal structure with well-crystallized. The high crystal quality of the doped thin film will lead to good thermoelectric properties. As expected, both the electrical conductivity and Seebeck coefficient are greatly enhanced after Ag doping, resulting in the enhancement of power factor, suggesting that the proposed strategy can be applied to prepare high-performance thermoelectric thin films. •Ag doped CoSb3 films were grown directly on the heated substrate.•2.Both the Seebeck coefficient and electrical conductivity are significantly enhanced.•Power factor has almost 100% enhanced after Ag doping.
ISSN:0040-6090
1879-2731
DOI:10.1016/j.tsf.2019.04.008