Understanding the thermally activated charge transport in NaPb<sub>m</sub>SbQ<sub>m+2</sub> (Q = S, Se, Te) thermoelectrics: weak dielectric screening leads to grain boundary dominated charge carrier scattering
Tyler J. Slade, Jann A. Grovogui, Jimmy Jiahong Kuo, Shashwat Anand, Trevor P. Bailey, Max Wood, Ctirad Uher, G. Jeffrey Snyder, Vinayak P. Dravid, Mercouri G. Kanatzidis
Abstract
Addressing the irregular electrical conductivity in PbQ–NaSbQ<sub>2</sub> thermoelectrics. Increasing the NaSbSe<sub>2</sub> fraction weakens charge carrier screening and strengthens GB scattering.
Topics & Concepts
ScatteringCharge carrierCharge (physics)Condensed matter physicsThermoelectric materialsDielectricMaterials scienceThermoelectric effectAnalytical Chemistry (journal)PhysicsChemistryOpticsThermodynamicsOptoelectronicsQuantum mechanicsChromatographyAdvanced Thermoelectric Materials and DevicesPerovskite Materials and ApplicationsChalcogenide Semiconductor Thin Films