Thermoelectric property studies on thallium-doped lead telluride prepared by ball milling and hot pressing

Bo Yu*, Qinyong Zhang, Hui Wang, Xiaowei Wang, Hengzhi Wang, Dezhi Wang, Heng Wang, G. Jeffrey Snyder, Gang Chen, Z. F. Ren

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

Thallium doping into lead telluride has been demonstrated to increase the dimensionless thermoelectric figure-of-merit (ZT) by enhancing Seebeck coefficient due to the creation of resonant states close to Fermi level without affecting the thermal conductivity. However, the process is tedious, energy consuming, and small in quantities since it involves melting, slow cooling for crystal growth, long time annealing, post-crushing and hot pressing. Here we show that a similar ZT value about 1.3 at 400 °C is achieved on bulk samples with grain sizes of 3-7 μm by ball milling a mixture of elemental thallium, lead, and tellurium and then hot pressing the ball milled nanopowders.

Original languageEnglish (US)
Article number016104
JournalJournal of Applied Physics
Volume108
Issue number1
DOIs
StatePublished - Jul 1 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Thermoelectric property studies on thallium-doped lead telluride prepared by ball milling and hot pressing'. Together they form a unique fingerprint.

Cite this