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

Indika U. Arachchige, Mercouri G. Kanatzidis

Research output: Contribution to journalArticle

53 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

    Fingerprint

ASJC Scopus subject areas

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

Cite this