Abstract
We investigated the effect of mesoporous structure on the thermoelectric properties of La-doped SrTiO3 films through the analyses of their structural, electrical, and thermoelectric properties. The mesoporous structure induces a decrease in thermal conductivity and an increase in the Seebeck coefficient because of increased phonon and carrier scattering. The increase of electrical resistivity was smaller than the changes in the Seebeck coefficient and thermal conductivity. As a result, the incorporation of Brij-S10 surfactant into La-doped SrTiO3 films induced an increase of the figure of merit. The maximum value of the figure of merit-approximately 0.025 at 200°C-was obtained with a Brij-S10 molar ratio of 0.1; this figure of merit was approximately 35% higher than that of a La-doped SrTiO3 film without the Brij-S10 surfactant. The results of our study suggest that the mesoporous structure could play a role in enhancing the thermoelectric properties.
| Original language | English |
|---|---|
| Pages (from-to) | E155-E158 |
| Journal | Journal of the Electrochemical Society |
| Volume | 163 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2016 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Surfaces, Coatings and Films
- Electrochemistry
- Materials Chemistry
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The effect of mesoporous structure on the thermoelectric properties of nonstoichiometric La-doped SrTiO3. / Park, Chang Sun; Han, Woo Je; Shim, Dong Il; Cho, Hyung Hee; Park, Hyung-Ho.
In: Journal of the Electrochemical Society, Vol. 163, No. 6, 01.01.2016, p. E155-E158.Research output: Contribution to journal › Article
TY - JOUR
T1 - The effect of mesoporous structure on the thermoelectric properties of nonstoichiometric La-doped SrTiO3
AU - Park, Chang Sun
AU - Han, Woo Je
AU - Shim, Dong Il
AU - Cho, Hyung Hee
AU - Park, Hyung-Ho
PY - 2016/1/1
Y1 - 2016/1/1
N2 - We investigated the effect of mesoporous structure on the thermoelectric properties of La-doped SrTiO3 films through the analyses of their structural, electrical, and thermoelectric properties. The mesoporous structure induces a decrease in thermal conductivity and an increase in the Seebeck coefficient because of increased phonon and carrier scattering. The increase of electrical resistivity was smaller than the changes in the Seebeck coefficient and thermal conductivity. As a result, the incorporation of Brij-S10 surfactant into La-doped SrTiO3 films induced an increase of the figure of merit. The maximum value of the figure of merit-approximately 0.025 at 200°C-was obtained with a Brij-S10 molar ratio of 0.1; this figure of merit was approximately 35% higher than that of a La-doped SrTiO3 film without the Brij-S10 surfactant. The results of our study suggest that the mesoporous structure could play a role in enhancing the thermoelectric properties.
AB - We investigated the effect of mesoporous structure on the thermoelectric properties of La-doped SrTiO3 films through the analyses of their structural, electrical, and thermoelectric properties. The mesoporous structure induces a decrease in thermal conductivity and an increase in the Seebeck coefficient because of increased phonon and carrier scattering. The increase of electrical resistivity was smaller than the changes in the Seebeck coefficient and thermal conductivity. As a result, the incorporation of Brij-S10 surfactant into La-doped SrTiO3 films induced an increase of the figure of merit. The maximum value of the figure of merit-approximately 0.025 at 200°C-was obtained with a Brij-S10 molar ratio of 0.1; this figure of merit was approximately 35% higher than that of a La-doped SrTiO3 film without the Brij-S10 surfactant. The results of our study suggest that the mesoporous structure could play a role in enhancing the thermoelectric properties.
UR - http://www.scopus.com/inward/record.url?scp=84963606434&partnerID=8YFLogxK
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U2 - 10.1149/2.0441606jes
DO - 10.1149/2.0441606jes
M3 - Article
VL - 163
SP - E155-E158
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
SN - 0013-4651
IS - 6
ER -