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Surface-enhanced fluorescence of praseodymium ions (Pr3+) on silver/silicon nanostructure

  • Shujuan Zhuo
  • , Mingwang Shao
  • , Liang Cheng
  • , Ronghui Que
  • , Dorthy Duo Duo Ma
  • , Shuit-Tong Lee

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

The enhanced fluorescence of praseodymium ions (Pr3+) owing to resonant plasma oscillation on the surface of Ag/Si nanostructure was investigated. When Ag/Si nanomaterials were added, the fluorescence peaks were markedly enhanced. A typical 12- to 40-fold enhancement at 604 nm and 18- to 193-fold enhancement at 640 nm could be achieved over a range of concentration from 0.01 to 0.05 M praseodymium ions, which had larger enhancement factor than that caused by unsupported silver nanoparticles. These results might be explained by the local field overlap originated from the closed and fixed silver nanoparticles on silicon nanowires. © 2010 American Institute of Physics.
Original languageEnglish
Article number103108
JournalApplied Physics Letters
Volume96
Issue number10
DOIs
Publication statusPublished - 2010

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