High-power density piezoelectric energy harvesting using radially strained ultrathin trigonal tellurium nanowire assembly

Tae Il Lee, Sangmin Lee, Eungkyu Lee, Sungwoo Sohn, Yean Lee, Sujeong Lee, Geondae Moon, Dohyang Kim, Youn Sang Kim, Jae Min Myoung, Zhong Lin Wang

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Abstract

A high-yield solution-processed ultrathin (<10 nm) trigonal tellurium (t-Te) nanowire (NW) is introduced as a new class of piezoelectric nanomaterial with a six-fold higher piezoelectric constant compared to conventional ZnO NWs for a high-volume power-density nanogenerator (NG). While determining the energy-harvesting principle in a NG consisting of t-Te NW, it is theoretically and experimentally found that t-Te NW is piezoelectrically activated only by creating strain in its radial direction, along which it has an asymmetric crystal structure. Based upon this mechanism, a NG with a monolayer consisting of well-aligned t-Te NWs and a power density of 9 mW/cm3 is fabricated.

Original languageEnglish
Pages (from-to)2920-2925
Number of pages6
JournalAdvanced Materials
Volume25
Issue number21
DOIs
Publication statusPublished - 2013 Jun 4

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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