Flower-shaped gold crystals grown on anodic etched porous silicon

Yan Mo, Fucheng Li, Baozhan Zheng, Hongyan Yuan, Dan Xiao*, Martin M F CHOI

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

1 Citation (Scopus)


This paper reports the synthesis and characterization of flower-shaped gold (Au) crystals. The Au particles are synthesized via a facile route by dipping the freshly anodic etched porous silicon (Si) into HAuCl 4· 3H 2O aqueous solution. The shape and size of Au clusters can be controlled by adjusting the concentration of HAuCl 4 and duration of the reaction. The Au nanoparticles are in-situ formed and this process/reaction is accompanied by the oxidation of porous Si. This Au-coated porous Si electrode is confirmed to be a metalinsulatorsemiconductor device by the currentvoltage and the capacitancevoltage plots. Our work provides a very simple and convenient route to synthesize Au crystals on anodic etched porous Si.

Original languageEnglish
Pages (from-to)100-103
Number of pages4
JournalMaterials Letters
Publication statusPublished - 1 Nov 2012

Scopus Subject Areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

User-Defined Keywords

  • Metal forming and shaping
  • Microstructure
  • Porous materials
  • Semiconductors


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