Abstract: The widespread application of thermoelectric technology and devices have attracted the attention of researchers all over the world. One of the effective ways to improve the conversion efficiency of thermoelectric devices is to optimize its ability of conductivity and heat transfer through analyzing the structure. This paper indicated the influence of interfaces such as ceramic substrate, metal electrode, interface layer and thermoelectric leg on the internal conductivity and heat transfer performance of Bi2Te3 thermoelectric device. This paper illustrated the problems and rela-ted solutions of both interface and connection interface in the practical design and application of the thermoelectric devices. In addition, the shor-tage in the design and optimization of thermoelectric devices are presented in this study.
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