Large thermoelectric power factor in Pr-doped SrTiO3-δ ceramics via grain-boundary-induced mobility enhancement
Type
ArticleAuthors
Mehdizadeh Dehkordi, ArashBhattacharya, Sriparna K.
Darroudi, Taghi
Graff, Jennifer W.
Schwingenschlögl, Udo

Alshareef, Husam N.

Tritt, Terry M.
KAUST Department
Computational Physics and Materials Science (CPMS)Functional Nanomaterials and Devices Research Group
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Date
2014-02-04Online Publication Date
2014-02-04Print Publication Date
2014-04-08Permanent link to this record
http://hdl.handle.net/10754/563491
Metadata
Show full item recordAbstract
We report a novel synthesis strategy to prepare high-performance bulk polycrystalline Pr-doped SrTiO3 ceramics. A large thermoelectric power factor of 1.3 W m-1 K-1 at 500 °C is achieved in these samples. In-depth investigations of the electronic transport and microstructure suggest that this significant improvement results from a substantial enhancement in carrier mobility originating from the formation of Pr-rich grain boundaries. This work provides new directions to higher performance oxide thermoelectrics as well as possibly other properties and applications of this broadly functional perovskite material. © 2014 American Chemical Society.Citation
Mehdizadeh Dehkordi, A., Bhattacharya, S., Darroudi, T., Graff, J. W., Schwingenschlögl, U., Alshareef, H. N., & Tritt, T. M. (2014). Large Thermoelectric Power Factor in Pr-Doped SrTiO3−δ Ceramics via Grain-Boundary-Induced Mobility Enhancement. Chemistry of Materials, 26(7), 2478–2485. doi:10.1021/cm4040853Sponsors
The authors wish to acknowledge the Faculty Initiated Collaboration (FIC) competitive grant from KAUST. The authors also wish to acknowledge M. N. Hedhili for XPS measurements and Dr. Jian He for many thoughtful conversations and discussions.Publisher
American Chemical Society (ACS)Journal
Chemistry of Materialsae974a485f413a2113503eed53cd6c53
10.1021/cm4040853