Simultaneous Enhancement of Electrical Conductivity and Thermopower of Bi2Te3 by Multifunctionality of Native Defects

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Joonki Suh
  • Deyi Fu
  • Xinyu Liu
  • Fan Yang
  • Jin Fan
  • David J. Smith
  • Yong-Hang Zhang
  • Jacek K. Furdyna
  • Chris Dames
  • Wladyslaw Walukiewicz
  • Junqiao Wu

Detail(s)

Original languageEnglish
Pages (from-to)3681-3686
Journal / PublicationAdvanced Materials
Volume27
Issue number24
Online published12 May 2015
Publication statusPublished - 24 Jun 2015
Externally publishedYes

Abstract

Simultaneous increases in electrical conductivity (up to 200%) and thermopower (up to 70%) are demonstrated by introducing native defects in Bi2Te3 films, leading to a high power factor of 3.4 × 10-3 W m-1 K-2. The maximum enhancement of the power factor occurs when the native defects act beneficially both as electron donors and energy filters to mobile electrons. They also act as effective phonon scatterers.

Research Area(s)

  • Bi2Te3, defect engineering, native point defects, particle irradiation, thermoelectric properties

Citation Format(s)

Simultaneous Enhancement of Electrical Conductivity and Thermopower of Bi2Te3 by Multifunctionality of Native Defects. / Suh, Joonki; Yu, Kin Man; Fu, Deyi et al.
In: Advanced Materials, Vol. 27, No. 24, 24.06.2015, p. 3681-3686.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review