Formation of Au nanoparticles on Si bicrystals

C. H. Liu*, Wen-Wei Wu, L. J. Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Formation of Au nanoparticles on Si bicrystal has been investigated by transmission electron microscopy. The Au nanoparticles were found to form preferentially at the node points of the dislocation network to relieve the strains induced by the dislocations. Upon annealing at 150°C, the Au nanoparticles were found to be confined by the dislocation grids. Upon further annealing at 250°C, small nanoparticles shrank in favor of the large nanoparticles, with a size larger than the critical size, as a manifestation of the classical Oswald ripening process. The shrinkage of Au nanoparticles exhibited a stepped behavior in that clusters shrank by steps of dislocation grids. The effects of dislocation spacing on the morphology of Au nanoparticles were also observed and discussed.

Original languageEnglish
Pages (from-to)2-6
Number of pages5
JournalJournal of Electronic Materials
Volume35
Issue number1
DOIs
StatePublished - 1 Jan 2006

Keywords

  • Au nanoparticles
  • Dislocation network
  • Preferential nucleation
  • Shape confinement
  • Si bicrystal

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