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Controlled Europium luminescent emission enhancement by noble metal nanostructured surfaces prepared by PLD

AuthorsSoria, E.; Mariscal, A. ; Gonzalo, J. ; Serna, Rosalía ; Iriarte, Mercedes
Issue Date27-May-2019
PublisherEuropean Materials Research Society
CitationE-MRS Spring Meeting Symposium V (2019)
AbstractRecently fluorescence-based techniques have gained great attention for detection of organic substances in small quantities for applications in environment control and health. Photonic technologies are in an excellent position to provide solutions in this context, since devices based on optical monitoring of light properties are very powerful tools for remote and non-invasive sensing applications. For these applications are necessary bright emitters that are clearly distinguishable and with a stable emission. In this respect rare-earth ions are very robust emitters with a very clean, narrow and robust emission. However, their emission tends to be less bright than that of traditional dyes due to their characteristic long-lifetime. A possible solution would be their combination with metallic nanostructures, particularly of Au and Ag, as they provide an enhanced emission due to plasmonic field absorption enhancement. In this work we investigate the modification of the emission luminescence properties of active thin films of europium oxide (Eu2O3) deposited on top of self-organized Au or Ag nanostructures prepared by Pulsed Laser Deposition (PLD). Au is investigated for its great stability for biological applications, while Ag is investigated due to the narrower band of its plasmon and its higher scattering efficiency. The potential enhancement of the emission efficiency is studied as a function of the deposition conditions, thickness and post-annealing treatments of Eu2O3 films.
DescriptionSymposium V: >Laser interactions with materials: from fundamentals to applications>, Nice, France, 27 to 31, 2019
Appears in Collections:(CFMAC-IO) Comunicaciones congresos
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