Enhancement in thermoelectric performance of n-type Pb-deficit Pb-Sb-Te alloys - Université de Rennes Access content directly
Journal Articles Journal of Alloys and Compounds Year : 2017

Enhancement in thermoelectric performance of n-type Pb-deficit Pb-Sb-Te alloys

Abstract

PbTe based materials are well known for their high performance thermoelectric properties. Here, a systematic study of thermoelectric transport properties of n-type Pb-deficit Pb0.98-xSbxTe alloys with carrier concentrations in the range of 10-19 cm-3 is presented from room temperature to 623 K. A maximum thermoelectric figure of merit (zT) of 0.81 was achieved at 623 K for 4 mol% Sb containing Pb-deficit composition, by the cumulative integration of enhanced power factor and significant reduction in thermal conductivity. The scattering of phonons at Pb vacancies, contributed to the reduction of lattice thermal conductivity, and thereby strikingly boosted the zT of the Pb-deficit samples when compared with the pristine Pb1-xSbxTe.
Fichier principal
Vignette du fichier
Bhuvanesh S_J. alloys & comp._Sep 17_HAL (1).pdf (774.54 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01613123 , version 1 (09-10-2017)

Identifiers

Cite

Bhuvanesh Srinivasan, Francesco Gucci, Catherine Boussard-Plédel, François Cheviré, Michael J. Reece, et al.. Enhancement in thermoelectric performance of n-type Pb-deficit Pb-Sb-Te alloys. Journal of Alloys and Compounds, 2017, 729, pp.198 - 202. ⟨10.1016/j.jallcom.2017.09.135⟩. ⟨hal-01613123⟩
223 View
247 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More