Low Temperature Synthesis as a Route for Highly Thermoelectric Efficient Na‐Doped PbTe. Issue 17 (6th June 2018)

• Record Type: Journal Article
• Authors: Papageorgiou, Chryssi; Delimitis, Andreas; Symeou, Elli; Giapintzakis, Ioannis; Kyratsi, Theodora
• Other Names: Diplas Spyros guestEditor.; Kyratsi Theodora guestEditor.; Sun Jianwu guestEditor.; Pirriera Monica Della guestEditor.; Ulyashin Alexander G. guestEditor.
• Is Part Of: Physica status solidi. Volume 215:Issue 17(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-06-06
• Subjects: in situ nanostructuring -- lead telluride -- thermoelectric figure of merit; Solid state physics -- Periodicals; Solids -- Industrial applications -- Periodicals; 530.41
• DOI: 10.1002/pssa.201800098
• Languages: English
• ISSNs: 1862-6300

Abstract

Abstract : In this work, Na‐doped PbTe is synthesized through a low temperature synthesis technique. This method provides highly efficient p‐type PbTe using a synthesis temperature much lower than the PbTe melting point and as low as 430 °C followed by sintering at 600 °C. A maximum ZT of 1.36 at 720 K is achieved for the Pb0.98 Na0.02 Te sample arising from a high power factor and a very low lattice thermal conductivity. The low thermal conductivity is attributed to the in situ nanostructuring achieved by the low temperature synthesis method, followed by cold pressing and sintering. Abstract : Na‐doped PbTe is synthesized through a low temperature synthesis technique. This method provides highly efficient p‐type PbTe with ZT of 1.36 at 720 K for the Pb0.98 Na0.02 Te. The low thermal conductivity is attributed to the in situ nanostructuring achieved by the low temperature synthesis method, followed by cold pressing and sintering.