Vapor-phase nucleation of individual CdSe nanostructures from shape-engineered nanocrystal seeds

Research output: Contribution to journalArticle

Authors

  • A Fasoli
  • S Pisana
  • A Colli
  • L Manna
  • AC Ferrari

Colleges, School and Institutes

Abstract

We investigate the vapor-phase nucleation of CdSe nanostructures on nanocrystals seeds of different shapes. The growth dynamics is assessed by transmission electron microscopy, following the evolution of the same nanocrystals prior and after the deposition process. We prove that individual nanocrystals can sustain the growth of single nanowires and determine their final morphology. Straight or branched nanowires are obtained from spherical or tetrapod-shaped nanocrystals, respectively. When tetrapod-shaped nanocrystals are used, we also find that their original shape and orientation are mostly preserved upon further growth.

Details

Original languageEnglish
Pages (from-to)023106-
JournalApplied Physics Letters
Volume92
Issue number2
Publication statusPublished - 1 Jan 2008

Keywords

  • Methods of nanofabrication and processing, Growth from vapor, and nanoscale systems: structure and nonelectronic properties, mesoscopic, Low-dimensional, Quantum wires, II-VI semiconductors