• closedAccess   A novel approach to obtain highly intense self-activated photoluminescence emissions in hydroxyapatite nanoparticles 

      Machado, Thales Rafael; Sczancoski, Júlio César; Beltrán Mir, Héctor; Costa Nogueira, Içamira; Siu Li, Maximo; Andres, Juan; Cordoncillo, Eloisa; Longo, Elson Elsevier (2017-05)
      Defect-related photoluminescence (PL) in materials have attracted interest for applications including near ultraviolet (NUV) excitable light-emitting diodes and in biomedical field. In this paper, hydroxyapatite [Ca10(PO4)6(OH)2] ...
    • openAccess   Photoluminescence of synthetic titanite-group pigments: A rare quenching effect 

      Nasdala, Lutz; Lyubenova, Teodora; Gaft, Michael; Wildner, Manfred; Diegor, Wilfredo; Petautschniga, Christian; Talla, Dominik; Lenz, Christoph Elsevier (2014)
      Chromium-doped titanite and malayaite samples, which were synthesised to evaluate their performance as ceramic pigments, show remarkable photoluminescence behaviour. Emissions of centres related to traces of trivalent ...
    • openAccess   Structural and optical properties of ZnS/MgNb2O6 heterostructures 

      Santos, Luís P. S.; Cavalcante, Laécio Santos; Fabbro, Maria T.; Beltrán Mir, Héctor; Cordoncillo, Eloisa; Andres, Juan; Longo, Elson Elsevier (2015-03)
      In this letter, we report a simple and efficient synthetic procedure where the first step is a coprecipitation/calcination method used to obtain magnesium niobate MgNb2O6(MN) nanocrystals and in the second stage a microwave ...