Enhancement of thermoelectric properties of SrTiO3/LaNb–SrTiO3 composite by different doping levels Project supported by the National Natural Science Foundation of China (Grant Nos. 61751404, 51702168, and 51665042), the Fund from the State Key Laboratory of New Ceramic and Fine Processing (Tsinghua University), China (Grant No. KF201608), the Fund from the Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, China (Grant No. 151004-K), and the Natural Science Foundation of Inner Mongolia Autonomous Region, China (Grant Nos. 2016BS0507 and 2015MS0509). |
(color online) (a) XRD patterns of STO/LaNb–STO disks; (b) EDS mapping for STO/La10Nb20–STO disk; SEM images for (c) STO/La5Nb5–STO, (d) STO/La5Nb10–STO, (e) STO/La10Nb10–STO, and (f) STO/La10Nb20–STO. |