全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

高温高压下掺杂N型PbTe的热电性能

DOI: 10.11858/gywlxb.2007.01.009, PP. 55-58

Keywords: PbTe,Sb2Te3,高温高压,热电材料

Full-Text   Cite this paper   Add to My Lib

Abstract:

以Sb2Te3作为掺杂剂,利用高温高压技术,成功合成出N型PbTe。在常温下对其热电性能的测试结果表明:掺杂微量的Sb2Te3后,PbTe的赛贝克系数绝对值和电阻率大幅度下降,热导率随掺杂浓度的增加缓慢升高。掺杂后PbTe的品质因子先大幅度增加,后逐渐降低,最高达到8.7×10-4K-1,它比常压合成的PbTe掺杂PbI2高一倍以上。结果表明,将高温高压方法与掺杂相结合,能有效地改善PbTe的热电性能。

References

[1]  Bennett G L. CRC Handbook of Thermoelectrics [Z]. New York: CRC Press, 1995: 515-537.
[2]  Zhu P W, Imai Y, Isoda Y, et al. Electrical Transport and Thermoelectric Properties of PbTe Prepared by HPHT [J]. Mater Trans, 2004, 45(11): 3102-3105.
[3]  Zhu P W, Jia X P, Chen H Y, et al. PbTe Syntheses by High-Pressure and High-Temperature Approach [J]. Chinese Journal of High Pressure Physics, 2002, 16(3): 183-187. (in Chinese)
[4]  朱品文, 贾晓鹏, 陈海勇, 等. PbTe的高温高压合成 [J]. 高压物理学报, 2002, 16(3): 183-187.
[5]  Uemura K, Nishida I A. Thermoelectric Semiconductors and Their Applications [M]. Tokyo: Nikkan-Kogyo, 1988: 180-197. (in Japanese)
[6]  Godwal B K, Jayarmnan A, Meenakashi S, et al. Electronic Topological and Structural Transition in AuIn2 under Pressure [J]. Phys Rev B, 1998, 57(2): 773-776.
[7]  Ni H L, Zhu T J, Zhao X B. Thermoelectric Properties of Hydrothermally Synthesized and Hot Pressed n-Type Bi2Te3 Alloys with Different Contents of Te [J]. Mater Sci Eng B, 2005, 117: 119-122.
[8]  Hsu K F, Loo S, Guo F, et al. Cubic AgPbmSbTem+2: Bulk Thermoelectric Materials with High Figure of Merit [J]. Science, 2004, 303: 818-821.
[9]  Orihashi M, Noda Y, Kaibe H T, et al. Evaluation of Thermoelectric Properties of Impurity-Doped PbTe [J]. Mater Trans, JIM, 1998, 39: 672-678.
[10]  Kishimoto K, Yamamoto K, Koyanagi T. Influences of Potential Barrier Scattering on the Thermoelectric Properties of Sintered n-Type PbTe with a Small Grain Size [J]. Jpn J Appl Phys, 2003, 42: 501-508.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133