Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7740890 | Journal of Power Sources | 2013 | 4 Pages |
Abstract
We report on an effective increase in the Seebeck coefficient for 5% La-doped SrTiO3 nanoceramics at temperatures of 300-800Â K through grain boundary doping with Nb, which results in an improvement of power factor by a value as high as 35%. This enhancement is likely due to the energy filtering effect at the Nb-doped grain boundaries with an enhanced potential barrier originating from the band offset between the boundaries and the interior of the grains.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Yifeng Wang, Xiaoyan Zhang, Liming Shen, Ningzhong Bao, Chunlei Wan, Nam-Hee Park, Kunihito Koumoto, Arunava Gupta,