Thermoelectric Performance of SrTiO3 Enhanced by Nanostructuring-Self-Assembled Particulate Film of Nanocubes

被引：22

作者：

Dang, Feng ^{[1
,2
]}

Wan, Chunlei ^{[1
,2
]}

Park, Nam-Hee ^{[1
,2
]}

Tsuruta, Kazuki ^{[1
]}

Seo, Won-Seon ^{[3
]}

Koumoto, Kunihito ^{[1
,2
]}

机构：

[1] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan

[2] Japan Sci & Technol Agcy, CREST, Tokyo 1020075, Japan

[3] Korea Inst Ceram Engn & Technol, Seoul 153801, South Korea

来源：

ACS APPLIED MATERIALS & INTERFACES | 2013年 / 5卷 / 21期

基金：

日本学术振兴会;

关键词：

SrTiO3; nanocubes; self-assembly; particulate film; thermoelectric; La doping; 2-DIMENSIONAL ELECTRON-GAS; LA;

D O I：

10.1021/am403112n

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Self-assembled particulate films with a uniform structure over a large area were prepared from La-SrTiO3 nanocubes for thermoelectric applications. UV irradiation was used to assist the formation of particulate film for decomposition of the organic phase in situ to obtain a mechanically robust structure at high temperature. The thermoelectric properties of the particulate film were measured after calcination at 1000 degrees C under a reductive. atmosphere (Ar/H2 = 60/40). A Seebeck coefficient of S = 239 +/- 24 mu V/K, electrical conductivity of sigma = 160 +/- 5 S/cm, and thermal conductivity of K approximate to 1.5 W/mK were obtained for a self-assembled particulate film (La: 5%) corresponding to a ZT value of 0.2 at room temperature, which exceeded that of a La-SrTiO3 single crystal with similar composition.

引用

页码：10933 / 10937

页数：5

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