Effect of crystal size distribution on thermoelectric performance for Lanthanum-doped strontium titanate bulk material

Boyu Zhang, Jun Wang, Xinba Yaer, Zhenzhen Huo, Yin Wu, Yan Li, Lei Miao, Chengyan Liu, Tao Zou, Wen Ma

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Effect of crystal size distribution on thermoelectric performance of Lanthanum-doped strontium titanate (La-SrTiO3) ceramics are investigated in this study. Thermoelectric performance measurement, coupled with microstructure studies, shows that the electrical conductivity strongly depends on the crystal size, potential barrier on the grain boundary and porosity. Meantime, because the average potential barriers height are increased along with the reduction of crystal size, the Seebeck coefficients are increased by energy filtering effect at the large number of grain boundaries. As a result, by controlling of crystal size distribution, ZT value of La-SrTiO3 is improved.

本文言語English
論文番号1550070
ジャーナルFunctional Materials Letters
8
6
DOI
出版ステータスPublished - 2015 12 1
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)

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