Thermoelectric Properties of CdTe1?em class="a-plus-plus">x Cl x Material Prepared by Spark Plasma Sintering Method

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• 作者：Menglei Wu (1) (2)
  Yukun Xiao (1)
  Zhengping Fu (2)
  Zhixiang Li (1)
  Jingtao Xu (1)
  Jun Jiang (1)
  Haochuan Jiang (1)
  Gaojie Xu (1)
  
• 关键词：CdTe ; thermoelectric properties ; spark plasma sintering
• 刊名：Journal of Electronic Materials
• 出版年：2014
• 出版时间：September 2014
• 年：2014
• 卷：43
• 期：9
• 页码：3087-3091
• 全文大小：1,281 KB
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• 作者单位：Menglei Wu (1) (2)
  Yukun Xiao (1)
  Zhengping Fu (2)
  Zhixiang Li (1)
  Jingtao Xu (1)
  Jun Jiang (1)
  Haochuan Jiang (1)
  Gaojie Xu (1)
  
  1. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
  2. Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
  
• ISSN：1543-186X

文摘

CdTe compound is a prospective thermoelectric material due to its high Seebeck coefficient and low thermal conductivity. In the present study, we optimized its carrier concentration by substituting Cl on the Te site in order to improve the electrical conductivity and decrease the lattice thermal conductivity. The polycrystalline CdTe1?em class="a-plus-plus">x Cl x (x?=?0.005, 0.01, 0.03, 0.05) samples were fabricated by solid state reaction followed with spark plasma sintering, and the relative densities of the sintered samples were higher than 98%. Thermoelectric properties, including Seebeck coefficient (α), electrical conductivity (σ). and thermal conductivity (κ), were measured in the temperature range of 300-00?K. The increase of Cl content (x) caused an increase of σ, and the maximum ZT value of 0.2 was obtained at about 630?K for the CdTe0.97Cl0.03 sample.