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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Alloys and Compounds for Thermoelectric and Solar Cell Applications IX
Presentation Title Effect of Interfacial Reaction on Bi2Te3 and Sb2Te3 Thin-film Thermoelectric Module
Author(s) Kai-Wen Cheng, Zhen-Wei Sun, Albert T. Wu
On-Site Speaker (Planned) Kai-Wen Cheng
Abstract Scope The interfacial reaction between thermoelectric materials and metal electrode becomes crucial when decreasing the dimension of thin-film module. Serious atomic interdiffusion at the interface may affect the electrical and thermoelectric properties of the module. In this study, Bi2Te3 and Sb2Te3 are selected respectively as the n- and p-type thermoelectric materials in the module for their small band gap and excellent zT values at room temperature range. Cu and Ni are chosen as the electrodes for their high electrical conductivity. To simulate the operating condition, the modules are aged for different duration of times at elevated temperatures. Atomic diffusion in the thermoelectric thin-film from the electrodes and its crystallographic relationship is investigated. Thermoelectric properties are measured to understand the effect of the interfacial stability for the thin-film modules.
Proceedings Inclusion? Planned:

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