Thermoelectric properties of antimony selenide hexagonal nanotubes

Nanotechnology
Jose A HernandezMiguel Jose-Yacaman

Abstract

Antimony selenide (Sb2Se3) is a material widely used in photodetectors and relatively new as a possible material for thermoelectric applications. Taking advantage of the new properties after nanoscale fabrication, this material shows great potential for the development of efficient low temperature thermoelectric devices. Here we study the synthesis, the crystal properties and the thermal and thermoelectric transport response of Sb2Se3 hexagonal nanotubes (HNT) in the temperature range between 120 and 370 K. HNT have a moderate electrical conductivity ∼102 S m-1 while maintaining a reasonable Seebeck coefficient ∼430 μV K-1 at 370 K. The electrical conductivity in Sb2Se3 HNT is about 5 orders of magnitude larger and its thermal conductivity one half of what is found in bulk. Moreover, the calculated figure of merit (ZT) at room temperature is the largest value reported in antimony selenide 1D structures.

References

Oct 12, 2010·Nano Letters·Rutvik J MehtaGanpati Ramanath
Dec 8, 2010·Journal of Nanoscience and Nanotechnology·Willinton FarfánCarlos Marín
Apr 2, 2011·Journal of Nanoscience and Nanotechnology·Soon-Won JungKyung-Wan Koo
Jun 13, 2014·ACS Applied Materials & Interfaces·Xinsheng LiuJiang Tang
Dec 14, 2016·ACS Applied Materials & Interfaces·Wen LuoLiqiang Mai
Jul 28, 2018·Nanotechnology·Sajad Yazdani, Michael Thompson Pettes
Jan 12, 2019·Nature Communications·Zhiqiang LiYaohua Mai

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