3-D atomic-scale mapping of manganese dopants in lead sulfide nanowires

Dieter Isheim, Jason Kaszpurenko, Dong Yu, Zugang Mao, David N. Seidman, Ilke Arslan*

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Dopants in nanowires, whether intentional or unintentional, can ultimately control the material's properties and, therefore, need to be understood on the atomic scale. We study vapor-liquid-solid grown manganese-doped lead sulfide nanowires by atom-probe tomography for the first time for lead salt materials. The three-dimensional chemical concentration maps at the atomic scale demonstrate a radial distribution profile of Mn ions, with a concentration of only 0.18 and 0.01 at. % for MnCl 2 and Mn-acetate precursors, respectively. The ability to characterize these small concentrations of dopant atoms in Pb 1-xMn xS nanowires (x = 0.0036 and 0.0002), important for spintronic and thermoelectric devices, sets a platform for similar analyses for all nanostructures. First-principles calculations confirm that Mn atoms substitute for Pb in the PbS structure.

Original languageEnglish (US)
Pages (from-to)6595-6600
Number of pages6
JournalJournal of Physical Chemistry C
Volume116
Issue number11
DOIs
StatePublished - Mar 22 2012

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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