Nb-doped grain boundary induced thermoelectric power factor enhancement in La-doped SrTiO3 nanoceramics

Yifeng Wang; Xiaoyan Zhang; Liming Shen; Ningzhong Bao; Chunlei Wan; Nam Hee Park; Kunihito Koumoto; Arunava Gupta

doi:10.1016/j.jpowsour.2013.04.143

Nb-doped grain boundary induced thermoelectric power factor enhancement in La-doped SrTiO₃ nanoceramics

Yifeng Wang, Xiaoyan Zhang, Liming Shen, Ningzhong Bao, Chunlei Wan, Nam Hee Park, Kunihito Koumoto, Arunava Gupta

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

33 Scopus citations

Abstract

We report on an effective increase in the Seebeck coefficient for 5% La-doped SrTiO₃ nanoceramics at temperatures of 300-800 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.

Original language	English
Pages (from-to)	255-258
Number of pages	4
Journal	Journal of Power Sources
Volume	241
DOIs	https://doi.org/10.1016/j.jpowsour.2013.04.143
State	Published - 2013

Keywords

Energy filtering
Grain boundary
Power factor
SrTiO
Thermoelectric

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jpowsour.2013.04.143

Cite this

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title = "Nb-doped grain boundary induced thermoelectric power factor enhancement in La-doped SrTiO3 nanoceramics",

abstract = "We report on an effective increase in the Seebeck coefficient for 5% La-doped SrTiO3 nanoceramics at temperatures of 300-800 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.",

keywords = "Energy filtering, Grain boundary, Power factor, SrTiO, Thermoelectric",

author = "Yifeng Wang and Xiaoyan Zhang and Liming Shen and Ningzhong Bao and Chunlei Wan and Park, {Nam Hee} and Kunihito Koumoto and Arunava Gupta",

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language = "英语",

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T1 - Nb-doped grain boundary induced thermoelectric power factor enhancement in La-doped SrTiO3 nanoceramics

AU - Wang, Yifeng

AU - Zhang, Xiaoyan

AU - Shen, Liming

AU - Bao, Ningzhong

AU - Wan, Chunlei

AU - Park, Nam Hee

AU - Koumoto, Kunihito

AU - Gupta, Arunava

PY - 2013

Y1 - 2013

N2 - We report on an effective increase in the Seebeck coefficient for 5% La-doped SrTiO3 nanoceramics at temperatures of 300-800 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.

AB - We report on an effective increase in the Seebeck coefficient for 5% La-doped SrTiO3 nanoceramics at temperatures of 300-800 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.

KW - Energy filtering

KW - Grain boundary

KW - Power factor

KW - SrTiO

KW - Thermoelectric

UR - http://www.scopus.com/inward/record.url?scp=84877967461&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2013.04.143

DO - 10.1016/j.jpowsour.2013.04.143

M3 - 文章

AN - SCOPUS:84877967461

SN - 0378-7753

VL - 241

SP - 255

EP - 258

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -