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Doping effect on thermoelectric properties of nonstoichiometric AgSbTe_2 compounds
  • ISSN号：1006-852X
  • 期刊名称：《金刚石与磨料磨具工程》
  • 时间：0
  • 分类：TN248[电子电信—物理电子学] TN37[电子电信—物理电子学]
  • 作者机构：[1]State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China, [2]Northwest Institute of Non-Ferrous Metal Research, Xi＇an 710016, China
  • 相关基金：supported by the National High-Tech Research and Development Program of China （No.2007AA03Z234）; the Major State Basic Research and Development Program of China （No.2007CB607502）; the National Natural Science Foundation of China （No.50731006）
作者： Sheng-nan Zhang[1,2], Guang-yu Jiang[1], Tie-jun Zhu[1], Xin-bing Zhao[1], Sheng-hui Yang[1]
关键词： Yb掺杂, 热电性能, 化合物, SEEBECK系数, 载流子浓度, 导热系数, 非化学计量, 电输运性质, thermoelectric materials, rare earth elements, doping, silver antimony telluride
中文摘要：

Nonstoichiometric 第三的热电的材料 Ag0.84Sb1.15M0.01Te2.16 (M=Ce， Yb， Cu ) 被直接融化熄灭和热出版社过程准备。所有样品的搬运人集中在做以后增加了。热电的性质，也就是电的传导性， Seebeck 系数，和热电导率，从 300 ～ 673 K 被测量。在从 -Ag2Te 代表阶段转变到 -Ag2Te 的大约 418 K 发生的阶段转变影响了电的运输性质。Ce 和 Yb 的电的传导性做了在从 1.9 做以后增加的样品 ? 景搠晥牯慭楴湯愠摮栠慥? 牴慥浴湥 ? 湯琠敨洠牯桰汯杯 ? 湡 ? 楤瑳楲畢楴湯漠 ? 牰 ' 虨宫摤嫪棖擢搼鐢?瑳摵敩吗？

英文摘要：

Nonstoichiometric ternary thermoelectric materials Ag0.84Sb1.15M0.01Te2.16 （M=Ce, Yb, Cu） were prepared by a direct melt-quench and hot press process. The carrier concentration of all the samples increased after doping. Thermoelectric properties, namely electrical con-ductivity, Seebeck coefficient, and thermal conductivity, were measured from 300 to 673 K. The phase transition occurring at about 418 K representing the phase transition from b-Ag2Te to a-Ag2Te influenced the electrical transport properties. The electrical conductivities of Ce and Yb doped samples increased after doping from 1.9×104 to 2.5×104 and 2.3×104 S·m-1, respectively, at 673 K. Also, at room temperature, the Seebeck coefficient of the Ce doped sample relatively increased corresponding to the high carrier concentration due to the changes in the band structure. However, all the thermal conductivities increased after doping at low temperature. Because of the higher thermal conductivity, the dimensionless figure of merit ZT of these doped samples has not been improved.

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高性能热电材料的非平衡态制备科学和电声输运协调
期刊论文 148 获奖 2 专利 10
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期刊信息
  • 《金刚石与磨料磨具工程》
  • 中国科技核心期刊
  • 主管单位:郑州磨料磨具磨削研究所
  • 主办单位:郑州磨料磨具磨削研究所
  • 主编：李志宏
  • 地址：郑州市高新区梧桐街121号
  • 邮编：450001
  • 邮箱：smzzgj@126.com
  • 电话：0371-67661785
  • 国际标准刊号：ISSN：1006-852X
  • 国内统一刊号：ISSN：41-1243/TG
  • 邮发代号:36-34
  • 获奖情况:
  • 1997年获国家科技期刊奖三等奖,1999年2000年获河南省优秀科技期刊二等奖
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,荷兰文摘与引文数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）
  • 被引量:4050