Selective growth of PbSe on one or both tips of colloidal semiconductor nanorods

Stefan Kudera, Luigi Carbone, Maria Francesca Casula, Roberto Cingolani, Andrea Falqui, Etienne Snoeck, Wolfgang J. Parak*, Liberato Manna

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

211 Scopus citations

Abstract

PbSe nanocrystals with rock-salt structure are grown on the tips of colloidal CdS and CdSe nanorods. The facets of wurtzite rods provide a substrate with various degrees of reactivity for the growth of PbSe. The presence of dangling Cd bonds may explain subtle differences between nonequivalent facets resulting in the selective nucleation of PbSe only on one of the two tips of each CdS rod. This approach has the potential to facilitate the fabrication of heterostructures with tailored optical and electronic properties.

Original languageEnglish (US)
Pages (from-to)445-449
Number of pages5
JournalNano Letters
Volume5
Issue number3
DOIs
StatePublished - Mar 1 2005

ASJC Scopus subject areas

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

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