2022/05/17 by Michael O. Ogunbunmi, Ogunbunmi, Michael O., Svilen Bobev +1
Materials Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Advanced Thermoelectric Materials and Devices #Chemical and Physical Properties of Materials #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci)
paper · pdf · doi:10.48550/arxiv.2205.08559
openalex publication_date 2022/05/17 · openalex created_date 2022/05/22 · openalex updated_date 2026/07/28
Ca10GdCdSb9 is a new Zintl phase with a large unit cell volume (~2500 Å3) and a very complex, disordered structure, which can drive the realization of ultralow thermal conductivity in this material. The measured Seebeck coefficient, α, for single-crystalline Ca10GdCdSb9 approaches 350 μV/K at 600 K. The experimentally determined electrical resistivity of Ca10GdCdSb9 is very low, leading to a remarkably high-power factor PF of 23.2 μW/cm.K2 at 460 K. The extraordinary PF value in this material, higher than those of the currently known state-of-the-art materials within the same temperature range, suggests that the Ca10RECdSb9 material system (RE = rare earth metal) could serve as a viable playground to harnessing new efficient thermoelectric generators.