Thermoelectric properties of doped (ZnO)mIn2O3

被引：28

作者：

Kaga, H ^{[1
]}

Asahi, R ^{[1
]}

Tani, T ^{[1
]}

机构：

[1] Toyota Cent Res & Dev Labs Inc, Aichi 4801192, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2004年 / 43卷 / 6A期

关键词：

thermoelectric; layer-structured; zinc indium oxide; Ca doping; thermal conductivity;

D O I：

10.1143/JJAP.43.3540

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The thermoelectric properties of layer-structured homologous compounds of (ZnO)(m)In2O3 (in is an integer) were investigated in terms of the detailed dependence of the molar ratio of ZnO to In2O3, n (=ZnO/In2O3), and of doping, such as with Ba2+, Ca2+, Sr2+, and Sn4+, for an In site. Except for the Ba and Sr dopings, all sintered specimens with n greater than or equal to 3 were found to be in the phases of (ZnO) In2O3. The highest power factor apparently existed around n = 3 while the thermal conductivity was minimum at the range from n = 3.5 to 5. The Ca doping effectively reduced the thermal conductivity, resulting in a dimensionless figure of merit of 0.23 (at 1053 K) for n = 3.5, which was relatively high among n-type oxides.

引用

页码：3540 / 3543

页数：4

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