Structural basis for near unity quantum yield core/shell nanostructures

James Mcbride, Joe Treadway, L. C. Feldman, Stephen J. Pennycook, Sandra J. Rosenthal

Research output: Contribution to journalArticlepeer-review

179 Citations (Scopus)

Abstract

Aberration-corrected Z-contrast scanning transmission electron microscopy of core/shell nanocrystals shows clear correlations between structure and quantum efficiency. Uniform shell coverage is obtained only for a graded CdS/ZnS shell material and is found to be critical to achieving near 100% quantum yield. The sublattice sensitivity of the images confirms that preferential growth takes place on the anion-terminated surfaces. This explains the three-dimensional "nanobullet" shape observed in the case of core/shell nanorods.

Original languageEnglish
Pages (from-to)1496-1501
Number of pages6
JournalNano letters
Volume6
Issue number7
DOIs
Publication statusPublished - Jul 1 2006

ASJC Scopus subject areas

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

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