Thermoelectric transport properties of bismuth telluride bulk materials fabricated by ball milling and spark plasma sintering

Chia Hung Kuo, Chii Shyang Hwang, Ming Shan Jeng, Wei Sheng Su, Ya Wen Chou, Jie Ren Ku

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)

Abstract

Dense bismuth telluride (Bi2Te3) bulk materials with randomly packed grains were prepared using attrition milling and spark plasma sintering (SPS). Experimental results indicate that the high energy ball milling produces donor-like carriers in Bi2Te3 samples and enhances thermoelectric transport properties such as carrier concentration, electrical conductivity and power factor. The maximum power factor of 1 mW m-1 K-2 was obtained at 500 K for the 3 h-milled Bi2Te3 sample sintered at 573 K. Results of this study demonstrate that adequately controlling the milling time can enhance the thermoelectric performance of Bi2Te3 bulk materials without adding dopants.

Original languageEnglish
Pages (from-to)687-690
Number of pages4
JournalJournal of Alloys and Compounds
Volume496
Issue number1-2
DOIs
Publication statusPublished - 2010 Apr 30

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Thermoelectric transport properties of bismuth telluride bulk materials fabricated by ball milling and spark plasma sintering'. Together they form a unique fingerprint.

Cite this