4.5 Article

High Thermoelectric Figure of Merit in p-Type (Bi2Te3)x-(Sb2Te3)1-x Alloys Made from Element-Mechanical Alloying and Spark Plasma Sintering

期刊

JOURNAL OF ELECTRONIC MATERIALS
卷 48, 期 1, 页码 416-424

出版社

SPRINGER
DOI: 10.1007/s11664-018-6706-7

关键词

Thermoelectric materials; p-type Bi-Sb-Te alloys; mechanical alloying; thermoelectric properties

资金

  1. Energy Efficiency & Resources Core Technology Program' of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) from the Ministry of Trade, Industry & Energy, Republic of Korea [20152020001210]
  2. National Research Council of Science & Technology (NST) Grant by the Korea Government (MSIP) [CRC-15-06-KIGAM]
  3. National Research Council of Science & Technology (NST), Republic of Korea [CRC-15-06-KIGAM] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

向作者/读者索取更多资源

p-Type (Bi2Te3)(x)-(Sb2Te3)(1-x) alloys with high thermoelectric properties were fabricated for waste heat energy recovery by mechanical alloying followed by spark plasma sintering. The samples' diffraction peaks, such as the (015) positions, were slightly shifted from high to low 2 angles with decreasing Sb2Te3 content due to the occupation of Sb sites by Bi atoms in the crystal lattice. The electrical conductivity increased with (Sb2Te3) content due to an increase in carrier concentration. The sample with the nominal composition of (Bi2Te3)(0.15)+(Sb2Te3)(0.85) exhibited a maximum thermoelectric figure of merit, ZT of 1.3 +/- 0.06 at 400K, and 1.07 +/- 0.06 at 300K. This enhanced ZT was successfully achieved by increasing (Sb2Te3) content, which reduces intrinsic conduction at higher temperatures by increasing carrier concentration and band gaps. The enhanced thermoelectric performance of the (Bi2Te3)(0.15)+(Sb2Te3)(0.85) TE materials can provide exceptional benefits for power generation and cooling applications around 400 K.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据