期刊
CHEMISTRY OF MATERIALS
卷 26, 期 7, 页码 2478-2485出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm4040853
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- KAUST
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 degrees 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.
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