High thermoelectric performance of Nb-doped SrTiO3 bulk materials with different doping levels

Boyu Zhang, Jun Wang, Tao Zou, Shuai Zhang, Xinba Yaer, Nan Ding, Chengyan Liu, Lei Miao, Yan Li, Yin Wu

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)

Abstract

Nb-doped SrTiO3 bulk materials with high quality are fabricated using a facile process. The doping level in SrTiO3 is controlled in a doping range of 0-20 mol%. Thermoelectric response including electrical conductivity σ, Seebeck coefficient S, and thermal conductivity k has been investigated in a high-temperature regime above 300 K. The ZT values show obvious doping-level dependences, in which the largest value as high as 0.37 at 1000 K and 0.40 at 1100 K is realized in the optimized doping range of 10-15 mol%. This is the first time such a remarkable thermoelectric performance was accomplished in electron-doped SrTiO3 ceramics.

Original languageEnglish
Pages (from-to)11406-11411
Number of pages6
JournalJournal of Materials Chemistry C
Volume3
Issue number43
DOIs
Publication statusPublished - 2015 Sep 25
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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