SrTiO3 Thin Films as High Efficient Thermoelectric Materials

被引：0

作者：

Bhansali, S. ^{[1
]}

Khunsin, W. ^{[1
]}

Reparaz, J. S. ^{[1
]}

Wagner, M. R. ^{[1
]}

Roqueta, J. ^{[2
]}

Santiso, J. ^{[2
]}

Abad Mayor, B. ^{[3
]}

Diaz-Chao, P. ^{[3
]}

Martin-Gonzalez, M. ^{[3
]}

Sotomayor Torres, C. M. ^{[1
,3
]}

机构：

[1] ICN2, Campus UAB, Bellaterra 08193, Barcelona, Spain

[2] CIN2, E-08193 Barcelona, Spain

[3] CSIC, Inst Microelect Madrid, Thermoelect Res Grp, Madrid, Spain

来源：

2013 19TH INTERNATIONAL WORKSHOP ON THERMAL INVESTIGATIONS OF ICS AND SYSTEMS (THERMINIC) | 2013年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In his work we investigate the thermoelectric performance of SrTiO3 thin films doped with Nb grown using pulsed laser deposition on crystalline LaAlO3 substrates. We show that a large enhancement of the Seebeck coefficient is observed for thin films with thicknesses below 10 nm in accordance with previous publications. In addition, we investigated the thermal conductivity of the thin films using the 3 omega technique between 4 and 300 K. We show that the thermal conductivity is reduced by a factor of three with respect to the bulk value. This reduction originates mostly in structural defects and oxygen vacancies within the thin films. Finally, the figure of merit of the thinnest films at 300 K resulted in ZT = 0.62.

引用

页码：359 / +

页数：2

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