Epitaxial CdSe-Au nanocrystal heterostructures by thermal annealing

Albert Figuerola, Marijn Van Huis, Marco Zanella, Alessandro Genovese, Sergio Marras, Andrea Falqui, Henny W. Zandbergen, Roberto Cingolani, Liberato Manna*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

121 Scopus citations

Abstract

The thermal evolution of a collection of heterogeneous CdSe-Au nanosystems (Au-decorated CdSe nanorods, networks, vertical assemblies) prepared by wet-chemical approaches was monitored in situ in the transmission electron microscope. In contrast to interfaces that are formed during kinetically controlled wet chemical synthesis, heating under vacuum conditions results in distinct and well-defined CdSe/Au interfaces, located at the CdSe polar surfaces. The high quality of these interfaces should make the heterostructures more suitable for use in nanoscale electronic devices.

Original languageEnglish (US)
Pages (from-to)3028-3036
Number of pages9
JournalNano Letters
Volume10
Issue number8
DOIs
StatePublished - Aug 11 2010
Externally publishedYes

Keywords

  • annealing
  • cadmium selenide
  • epitaxy
  • gold
  • hybrid nanocrystals
  • interface
  • nanocrystals
  • Nanorods
  • orientation relationship
  • self-assembly

ASJC Scopus subject areas

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

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