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Long-Term Stability of the Colossal Seebeck Effect in Metallic Cu 2 Se
Journal of Electronic Materials ( IF 1.774 ) Pub Date : 2020-01-02 , DOI: 10.1007/s11664-019-07884-2
Dogyun Byeon, Robert Sobota, Saurabh Singh, Swapnil Ghodke, Seongho Choi, Naoto Kubo, Masahiro Adachi, Yoshiyuki Yamamoto, Masaharu Matsunami, Tsunehiro Takeuchi

Determination of thermoelectric properties is rather a challenging task, especially during a phase transition, where a drastic change in magnitude of thermoelectric properties is generally observed. In this study, we performed a precise measurement of the Seebeck coefficient on Cu2Se, which was recently reported to possess a colossal Seebeck coefficient with metallic electrical conductivity during a structural phase transition. We confirmed that the colossal Seebeck effect was stable over a long period of time, as high as −0.9 mV under an applied temperature gradient of 1 K. This fact clearly proved that the colossal Seebeck effect observable in metallic Cu2Se is potentially usable for a variety of thermoelectric applications.
更新日期:2020-01-02

 

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