Large thermoelectric power factor in Pr-doped SrTiO3-δ ceramics via grain-boundary-induced mobility enhancement

Arash Mehdizadeh Dehkordi; Sriparna K. Bhattacharya; Taghi Darroudi; Jennifer W. Graff; Udo Schwingenschlögl; Husam N. Alshareef; Terry M. Tritt

doi:10.1021/cm4040853

Large thermoelectric power factor in Pr-doped SrTiO3-δ ceramics via grain-boundary-induced mobility enhancement

Arash Mehdizadeh Dehkordi, Sriparna K. Bhattacharya, Taghi Darroudi, Jennifer W. Graff, Udo Schwingenschlögl, Husam N. Alshareef, Terry M. Tritt

Research output: Contribution to journal › Article › peer-review

79 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	2478-2485
Number of pages	8
Journal	Chemistry of Materials
Volume	26
Issue number	7
DOIs	https://doi.org/10.1021/cm4040853
State	Published - Feb 4 2014

ASJC Scopus subject areas

Materials Chemistry
General Chemical Engineering
General Chemistry

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10.1021/cm4040853

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@article{41b0580680f34663afac0073c9aedad3,

title = "Large thermoelectric power factor in Pr-doped SrTiO3-δ ceramics via grain-boundary-induced mobility enhancement",

abstract = "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. {\textcopyright} 2014 American Chemical Society.",

author = "{Mehdizadeh Dehkordi}, Arash and Bhattacharya, {Sriparna K.} and Taghi Darroudi and Graff, {Jennifer W.} and Udo Schwingenschl{\"o}gl and Alshareef, {Husam N.} and Tritt, {Terry M.}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: 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.",

year = "2014",

month = feb,

day = "4",

doi = "10.1021/cm4040853",

language = "English (US)",

volume = "26",

pages = "2478--2485",

journal = "Chemistry of Materials",

issn = "0897-4756",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Large thermoelectric power factor in Pr-doped SrTiO3-δ ceramics via grain-boundary-induced mobility enhancement

AU - Mehdizadeh Dehkordi, Arash

AU - Bhattacharya, Sriparna K.

AU - Darroudi, Taghi

AU - Graff, Jennifer W.

AU - Schwingenschlögl, Udo

AU - Alshareef, Husam N.

AU - Tritt, Terry M.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: 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.

PY - 2014/2/4

Y1 - 2014/2/4

N2 - 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.

AB - 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.

UR - http://hdl.handle.net/10754/563491

UR - https://pubs.acs.org/doi/10.1021/cm4040853

UR - http://www.scopus.com/inward/record.url?scp=84897983363&partnerID=8YFLogxK

U2 - 10.1021/cm4040853

DO - 10.1021/cm4040853

M3 - Article

SN - 0897-4756

VL - 26

SP - 2478

EP - 2485

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 7

ER -

Large thermoelectric power factor in Pr-doped SrTiO3-δ ceramics via grain-boundary-induced mobility enhancement

Abstract

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