Aqueous chemical synthesis of tellurium nanowires using a polymeric template for thermoelectric materials

Hongkwan Park, Woohyun Son, Seung Hwan Lee, Soyeon Kim, Jung Joon Lee, Wonseok Cho, Hyang Hee Choi, Jung Hyun Kim

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We report the simple synthesis of tellurium nanowires (TeNWs) by a one-pot scale-up hydrothermal process. A clean wet-chemical method, employing telluric acid (Te(OH)6) as a source of tellurium, ascorbic acid as a weak reducing agent, and a linear polymer as a template, has been developed for the synthesis of TeNWs with a diameter of 30-140 nm and a length of several micrometers at 105°C. A possible explanation for the one-dimensional growth of TeNWs is the linear polymer template. The effects of the concentration of the polymeric template on the nanowire morphology were investigated. Evaluation of the thermoelectric properties indicated a high Seebeck coefficient and a power factor of about 568 μV K-1 and 8.44 μW mK-2, respectively, of the optimized TeNW films, and these values were about 80 times larger than those of the TeNW films formed without a polymeric template. We expect this simple process to be widely applicable for large-scale production of one-dimensional inorganic nanomaterials for energy harvesting and electronic devices.

Original languageEnglish
Pages (from-to)1092-1097
Number of pages6
JournalCrystEngComm
Volume17
Issue number5
DOIs
Publication statusPublished - 2015 Feb 7

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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