Enhancing Chemical and Optical Stability of Silver Nanostructures by Low-Temperature Hydrogen Atoms Processing (Articolo in rivista)

Type
Label
  • Enhancing Chemical and Optical Stability of Silver Nanostructures by Low-Temperature Hydrogen Atoms Processing (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jp307936k (literal)
Alternative label
  • Maria Losurdo, Iris Bergmair, Maria Michela Giangregorio, Babak Dastmalki, Giuseppe Valerio Bianco, Christian Helgert, Ekaterina Pshenay-Severin, Matthias Falkner, Thomas Pertsch, Ernst Kley, Marc Verschuuren, Michael Mühlberger, Uwe Huebner, Kurt Hingerl,Giovanni Bruno (2012)
    Enhancing Chemical and Optical Stability of Silver Nanostructures by Low-Temperature Hydrogen Atoms Processing
    in Journal of physical chemistry. C
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Maria Losurdo, Iris Bergmair, Maria Michela Giangregorio, Babak Dastmalki, Giuseppe Valerio Bianco, Christian Helgert, Ekaterina Pshenay-Severin, Matthias Falkner, Thomas Pertsch, Ernst Kley, Marc Verschuuren, Michael Mühlberger, Uwe Huebner, Kurt Hingerl,Giovanni Bruno (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • - Institute of Inorganic Methodologies and of Plasmas-CNR, Via Orabona, 4, 70126 Bari, Italy - Functional Surfaces and Nanostructures, PROFACTOR GmbH, Im Stadtgut A2, 4407 Steyr-Gleink, Austria - Center for Surface- and Nanoanalytics, Johannes Kepler University Linz, Altenbergerstr. 69, 4040 Linz, Austria - Institute for Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universita?t Jena, Max Wien Platz 1, 07743 Jena, Germany - Institute of Photonic Technology, A. Einstein Str. 9, 07745 Jena, Germany - Philips Research, High Tech Campus 4, 5656 AE Eindhoven, The Netherlands (literal)
Titolo
  • Enhancing Chemical and Optical Stability of Silver Nanostructures by Low-Temperature Hydrogen Atoms Processing (literal)
Abstract
  • A large variety of applications ranging from plasmonic sensing to plasmonic enhanced solar cells, photonics, and optics can benefit from a reliable method to enhance chemical and time stability of silver-based plasmonic nanostructures and metamaterials. Therefore, here we demonstrate and discuss the effectiveness of a low-temperature (100 °C) hydrogen atom processing of silver to inhibit its oxidation and stabilize surface plasmon resonances in silver nanostructure suitable for plasmonics, metamaterials, sensing, and photovoltaics. Interestingly, no dielectric overlayer encapsulating Ag is used to protect the silver nanostructure, differently from the common approach, because these overlayers typically lead to a red shift of the optical resonances due to their refractive index. Conversely, we demonstrate that the silver deoxidation by the hydrogen treatment results in a slight blue shift of resonances, which is useful for preserving resonances in the visible range. The chemical mechanism rationalizing the validity of this processing is discussed. The optical properties of the fabricated samples were measured by means of transmission, reflection, and ellipsometry spectroscopies. Theoretical support to the interpretation of the optical properties demonstrates the advantages of this advanced processing. Therefore, this work is an important step toward novel and breakthrough applications of stable silver-based nanostructures for plasmonics and metamaterials exploiting visible light. (literal)
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