Structural basis for near unity quantum yield core/shell nanostructures

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

Research output: Contribution to journalArticle

156 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 2006

Fingerprint

Quantum yield
Aberrations
Nanorods
Quantum efficiency
Nanocrystals
Anions
unity
Nanostructures
Negative ions
Transmission electron microscopy
Scanning electron microscopy
sublattices
nanorods
aberration
quantum efficiency
nanocrystals
anions
transmission electron microscopy
scanning electron microscopy
sensitivity

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Chemistry (miscellaneous)

Cite this

Mcbride, J., Treadway, J., Feldman, L. C., Pennycook, S. J., & Rosenthal, S. J. (2006). Structural basis for near unity quantum yield core/shell nanostructures. Nano Letters, 6(7), 1496-1501. https://doi.org/10.1021/nl060993k

Structural basis for near unity quantum yield core/shell nanostructures. / Mcbride, James; Treadway, Joe; Feldman, Leonard C; Pennycook, Stephen J.; Rosenthal, Sandra J.

In: Nano Letters, Vol. 6, No. 7, 07.2006, p. 1496-1501.

Research output: Contribution to journalArticle

Mcbride, J, Treadway, J, Feldman, LC, Pennycook, SJ & Rosenthal, SJ 2006, 'Structural basis for near unity quantum yield core/shell nanostructures', Nano Letters, vol. 6, no. 7, pp. 1496-1501. https://doi.org/10.1021/nl060993k
Mcbride, James ; Treadway, Joe ; Feldman, Leonard C ; Pennycook, Stephen J. ; Rosenthal, Sandra J. / Structural basis for near unity quantum yield core/shell nanostructures. In: Nano Letters. 2006 ; Vol. 6, No. 7. pp. 1496-1501.
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