title: Multi-functionality of fluorescent nanocrystals in glass ceramics.
abstract: Thermal processing of as-made fluorozirconate glasses, which were additionally doped with rare-earth and chlorine ions, results in the formation of fluorescent nanocrystals therein. For medical applications, the glasses were doped with divalent europium ions as the fluorescent rare-earth ion, while trivalent neodymium was used to develop up-conversion systems. The samples were annealed up to 290 °C to initiate the growth of hexagonal or orthorhombic phase BaCl2nanocrystals therein. Upon annealing some of the rare-earth ions were incorporated into the BaCl2nanocrystals leading to enhanced fluorescence properties. The particle diameters were in the range of a few nanometers to several tens of nanometers.
authors: Fraunhofer Center for Silicon Photovoltaics, Walter-Hülse-Str. 1, 06120 Halle (Saale), Germany ; Institute of Physics, Martin Luther University of Halle-Wittenberg, Heinrich-Damerow-Str. 4, 06120 Halle (Saale), Germany.
authors: S
authors: S
authors: Schweizer
authors: B
authors: B
authors: Henke
authors: P T
authors: PT
authors: Miclea
authors: B
authors: B
authors: Ahrens
authors: J A
authors: JA
authors: Johnson
keywords: Glass ceramics; Nanocrystals; Radiation detection; Up- and down-conversion