Broadening the temperature range for high thermoelectric performance of bulk polycrystalline strontium titanate by controlling the electronic transport properties

• Published in: Journal of materials chemistry. C, Materials for optical and electronic devices Vol. 6; no. 28; pp. 7594 - 7603
• Main Authors: Li, Jian-Bo, Wang, Jun, Li, Jing-Feng, Li, Yan, Yang, He, Yu, Hao-Yang, Ma, Xiao-Bo, Yaer, Xinba, Liu, Liang, Miao, Lei
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 2018
• Subjects: Doping; Electron transport; Figure of merit; Niobium carbide; Point defects; Polycrystals; Power factor; Scattering; Sintering (powder metallurgy); Strontium titanates; Temperature; Thermoelectric materials; Titanium dioxide; Transport properties

Strontium titanate (SrTiO 3 ) is a promising n-type thermoelectric material at high temperature. However, to date, its reported high dimensional figure of merit ( zT ) > 0.4 has only been achieved in a narrow temperature range near 1000 K. In this study, zT values of >0.4 were achieved in the...