OSA's Digital Library

Applied Spectroscopy

Applied Spectroscopy


  • Vol. 53, Iss. 1 — Jan. 1, 1999
  • pp: 43–48

Surface-Enhanced Fluorescence on SiO2-Coated Silver Island Films

Peter J. Tarcha, J. Desaja-Gonzalez, S. Rodriguez-Llorente, and R. Aroca

Applied Spectroscopy, Vol. 53, Issue 1, pp. 43-48 (1999)

View Full Text Article

Acrobat PDF (253 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

  • Export Citation/Save Click for help


Fluorescence is one of the molecular spectroscopic properties that is enhanced by placing the molecule on the rough surface of a coinage metal. The surface-enhanced fluorescence (SEF) can be directly observed in steady-state fluorescence experiments. The observations are the results of a delicate balance between the enhanced emission and the quenching due to energy transfer to nonradiative surface plasmons. In the present report, SiO2-coated silver films were fabricated at varying dielectric thickness. The surface of the films was analyzed with the use of atomic force microscopy (AFM) and Xray photoelectron spectroscopy (XPS). AFM confirms the surface roughness and XPS analysis indicates that the SiO2 coverage was successful. SEF and SERS (surface-enhanced Raman scattering) were observed on active 6, 10, and 14 nm silver films coated with SiO2. Similar results were obtained with a 6 nm silver film coated with 6 nm SiO. The SEF work was carried out on fluorescent molecules with different quantum yield, and the typical enhancement factor obtained for the fluorescent signal was approximately 10. Both the SiO2 and SiO overlayers provide stable surfaces with welldefined hydrophilic properties. Such stable constructions have applicability towards the advancement of SERS and SEF as routine analytical techniques in bio- and chemical sensors.

Peter J. Tarcha, J. Desaja-Gonzalez, S. Rodriguez-Llorente, and R. Aroca, "Surface-Enhanced Fluorescence on SiO2-Coated Silver Island Films," Appl. Spectrosc. 53, 43-48 (1999)

Sort:  Journal  |  Reset


References are not available for this paper.

Cited By

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited