Anomalous band gap evolution from band inversion in Pb 1-xSn xTe nanocrystals

Indika U. Arachchige, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

We report the synthesis of a series of narrowly disperse Pb 1-xSn xTe nanocrystals by employing a colloidal synthetic strategy. As synthesized nanocrystals are solid solutions with cubic NaCI-type structure and exhibit band energy gaps in the mid-IR region. We show that these ternary nanocrystals display qualitatively the same anomalous trend in band gaps as a function of x that is attributed to the band inversion phenomenon of the corresponding bulk materials; however unlike the bulk the band gap does not vanish at any Sn concentration but achieves a minimum of 0.28 eV for × = 0.67.

Original languageEnglish
Pages (from-to)1583-1587
Number of pages5
JournalNano Letters
Volume9
Issue number4
DOIs
Publication statusPublished - Apr 8 2009

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Nanocrystals
nanocrystals
Energy gap
inversions
Solid solutions
solid solutions
trends
synthesis

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Anomalous band gap evolution from band inversion in Pb 1-xSn xTe nanocrystals. / Arachchige, Indika U.; Kanatzidis, Mercouri G.

In: Nano Letters, Vol. 9, No. 4, 08.04.2009, p. 1583-1587.

Research output: Contribution to journalArticle

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