Atomic positional versus electronic order in semiconducting ZnSe nanoparticles

S. Cadars, B. J. Smith, J. D. Epping, S. Acharya, N. Belman, Y. Golan, B. F. Chmelka

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

Abstract

Size-controlled ZnSe nanoparticles with high extents of atomic positional order are shown to exhibit large size-dependent variations in their local electronic environments. Solid-state Se77 and Zn67 NMR spectra reveal increasingly broad distributions of Se77 and Zn67 environments with decreasing nanoparticle sizes, in contrast with high degrees of atomic positional order established by transmission electron microscopy and x-ray diffraction. First-principles calculations of NMR parameters distinguish between atomic positional and electronic disorder that propagate from the nanoparticle surfaces and yield insights on the order and disorder present.

Original languageEnglish
Article number136802
JournalPhysical Review Letters
Volume103
Issue number13
DOIs
StatePublished - 24 Sep 2009

ASJC Scopus subject areas

  • General Physics and Astronomy

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