Improved <i>zT</i> in Nb<sub>5</sub>Ge<sub>3</sub>–GeTe thermoelectric nanocomposite
Jing Cao, Xian Yi Tan, Ning Jia, Da Lan, Samantha Faye Duran Solco, Kewei Chen, Sheau Wei Chien, Hongfei Liu, Chee Kiang Ivan Tan, Qiang Zhu, Jianwei Xu, Qingyu Yan, Ady Suwardi
Abstract
Doping high electrical conductivity Nb 5 Ge 3 precipitates into GeTe results in nanoprecipitates phonon scattering, while retaining electrical mobility. As a result, thermoelectric zT of GeTe is drastically enhanced to 2.0 at 723 K.
Topics & Concepts
Thermoelectric effectNanocompositeMaterials scienceThermoelectric materialsCondensed matter physicsSuperconductivityDopingThermal conductivityPhonon scatteringFigure of meritPhononNanotechnologyOptoelectronicsComposite materialThermodynamicsPhysicsAdvanced Thermoelectric Materials and Devices2D Materials and ApplicationsThermal properties of materials