高压合成AgSbTe2-Sb2Te3的热电性能研究

宿太超; 张曙光; 李小雷; 马红安; 李尚升; 贾晓鹏; 

doi:10.11858/gywlxb.2011.04.005

高压合成AgSbTe2-Sb2Te3的热电性能研究

doi: 10.11858/gywlxb.2011.04.005

1.
河南理工大学材料科学与工程学院，河南焦作 454003；
2.
焦作师范高等专科学校数学系，河南焦作 454000；
3.
吉林大学超硬材料国家重点实验室，吉林长春 130012

详细信息

通讯作者:
贾晓鹏

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出版历程
- 收稿日期: 2010-06-08
- 修回日期: 2010-09-09
- 刊出日期: 2011-08-15

Thermoelectric Properties of AgSbTe2-Sb2Te3 Prepared by High Pressure Synthesis

1.
Institute of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China;
2.
Department of Mathematics, Jiaozuo Teachers College, Jiaozuo 454000, China;
3.
National Laboratory of Superhard Materials, Jinlin University, Changchun 130012, China

More Information

Corresponding author: JIA Xiao-Peng

摘要

摘要: 利用高压方法，合成了富Sb2Te3的AgSbTe2热电材料(AgSbTe2)1-x(Sb2Te3)x (0x0.3)，并对其结构和热电性质进行了研究。结果表明：(AgSbTe2)1-x(Sb2Te3)x样品为近单相的AgSbTe2材料；随着制备压力和Sb2Te3掺杂量的增加，(AgSbTe2)1-x(Sb2Te3)x的电阻率大幅降低；Seebeck系数在高压作用下变小，而少量掺杂Sb2Te3却能提高Seebeck系数；在高压和微量掺杂Sb2Te3的共同作用下，AgSbTe2的功率因子得到了提高；2.0 GPa高压下，制备的Ag0.9Sb1.1Te2.1的品质因子达到0.466，接近Bi2Te3的品质因子。
- 高压 /
- 热电材料 /
- AgSbTe2 /
- 电阻率 /
- 功率因子
Abstract: The p-type thermoelectric materials of AgSbTe2 alloyed with Sb2Te3 ((AgSbTe2)1-x(Sb2Te3)x, 0x0.3) are prepared by high pressure method. The structure and thermoelectric properties of (AgSbTe2)1-x(Sb2Te3)x are studied at room temperature. Experimental results indicate that the samples are near single phase AgSbTe2 when x0.1. The electrical resistivity of the sample decreases dramatically with the increasing of synthetic pressure and Sb2Te3 content x. The Seebeck coefficient increases. The high pressure combining with Sb2Te3 doping can improve the power factor of AgSbTe2 effectively. Moreover, the enhanced power factor reaches 10.4 W/(cmK2), and the high figure of merit reaches 0.466 for (AgSbTe2)0.9(Sb2Te3)0.1 prepared at 2.0 GPa, which is close to that of Bi2Te3.
- high pressure /
- thermoelectric material /
- AgSbTe2 /
- electrical resistivity /
- power factor

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参考文献(11)

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