Rare Earth Doped Materials at the Nanoscale

A special issue of Nanomaterials (ISSN 2079-4991).

Deadline for manuscript submissions: closed (28 February 2019) | Viewed by 3111

Special Issue Editors


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Guest Editor
Department of Physics of Materials, University Autonoma of Madrid, Madrid, Spain
Interests: rare-earth doped materials; optical spectroscopy; interaction between plasmonic nanostructures and optically active gain media; nonlinear optical processes; solid state lasers; optical properties in ferroelectrics; nanophotonics

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Guest Editor
Department of Physics of Materials, University Autonoma of Madrid, Madrid, Spain
Interests: optical spectroscopy of solids; nonlinear properties of materials; multifunctional solid state lasers; plasmon-assisted solid-state-lasers; plasmon-assisted frequency conversion process; coherent optical sources at the nanoscale

Special Issue Information

Dear Colleagues,

Rare-Earth (RE) doped materials are relevant components of physical, chemical, and biomedical systems. They are currently exploited in a number of devices including solid-state lasers, phosphors, displays, telecom systems, sensors and quantum memories. In addition, the manipulation of their optical properties at the nanoscale provides opportunities to further enlarge their multifunctionality in many different strategic areas. Some examples include bio-imaging, medical diagnosis and therapy, green technologies for solid-state lighting, photovoltaics and energy conversion in solar cells, sensing, quantum information and plasmon-assisted nanophotonics.

This Special Issue of Nanomaterials aims to highlight the unique properties and countless applications of “Rare Earth Doped Materials at the Nanoscale” by collecting a compilation of articles in the form of research papers or reviews reflecting the most recent progress on this dynamic and active research field. Topics include, but are not limited, to:

  1. Optical properties of rare-earth doped materials at the nanoscale
  2. Nanostructured functional materials and novel nanofabrication technologies for rare-earth based photonic devices
  3. Rare-earth doped nanomaterials for biomedical, sensing, photonics, optoelectronics, solar cells, quantum information
  4. Modelling and advanced characterization methods of rare-earth doped systems at the nanoscale
  5. Other studies involving rare earth emitters in nanoscience and nanotechnology

Dr. Mariola O Ramirez
Prof. Dr. Luisa E. Bausá
Guest Editors

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Keywords

  • Nanoparticles
  • Thin films and interfaces
  • Energy transfer
  • Spectroscopy
  • Sensing
  • Imaging

Published Papers (1 paper)

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Research

16 pages, 3175 KiB  
Article
Transparent Sol-Gel Oxyfluoride Glass-Ceramics with High Crystalline Fraction and Study of RE Incorporation
by Giulio Gorni, Jose J. Velázquez, Jadra Mosa, Glenn C. Mather, Aida Serrano, María Vila, Germán R. Castro, David Bravo, Rolindes Balda, Joaquín Fernández, Alicia Durán and Yolanda Castro
Nanomaterials 2019, 9(4), 530; https://doi.org/10.3390/nano9040530 - 03 Apr 2019
Cited by 22 | Viewed by 2725
Abstract
Transparent oxyfluoride glass-ceramic films and self-supported layers with composition 80SiO2-20LaF3 doped with Er3+ have been successfully synthesized by sol-gel process for the first time. Crack-free films and self-supported layer with a maximum thickness up to 1.4 µm were obtained [...] Read more.
Transparent oxyfluoride glass-ceramic films and self-supported layers with composition 80SiO2-20LaF3 doped with Er3+ have been successfully synthesized by sol-gel process for the first time. Crack-free films and self-supported layer with a maximum thickness up to 1.4 µm were obtained after heat treatment at the low temperature of 550 °C for 1 min, resulting in a LaF3 crystal fraction of 18 wt%, as confirmed by quantitative Rietveld refinement. This is the highest value reported up to now for transparent oxyfluoride glass-ceramics prepared by sol-gel. This work provides a new synthesis strategy and opens the way to a wide range of potential applications of oxyfluoride glass-ceramics. The characterization by a wide range of techniques revealed the homogeneous precipitation of LaF3 nanocrystals into the glass matrix. X-ray absorption spectroscopy and electron paramagnetic resonance confirmed that the Er3+ ions are preferentially embedded in the low phonon-energy LaF3 nanocrystals. Moreover, photoluminescence (PL) measurements confirmed the incorporation of dopants in the LaF3 nanocrystals. The effective concentration of rare-earth ions in the LaF3 nanocrystals is also estimated by X-ray absorption spectroscopy. Full article
(This article belongs to the Special Issue Rare Earth Doped Materials at the Nanoscale)
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