title: Spectroscopic properties of Yb3+ doped CaNb2O6 phosphor.
abstract: The spectroscopic measurements of orthorhombic CaNb2O6 phosphor doped with Yb3+ ions have been performed. Low temperature spectra indicate that Yb3+ ions may occupy three types of nonequivalent sites inside the CaNb2O6 lattice: a main Yb3+ site dominating the near-infrared emission, and two other minor sites of similar behaviors to each other. An attempt to determine the Stark sublevels energies of the 2F7/2 and 2F5/2 manifolds of three Yb3+ nonequivalent ions was carried out. The fluorescence lifetimes associated to the emission lines of Yb3+ ions located at the main site and minor sites are also quite different. Furthermore, there exists energy transfer from the main site to the minor sites.
authors.forename: Ru
authors.initials: R
authors.lastname: Zhou
authors.forename: Xiantao
authors.initials: X
authors.lastname: Wei
authors.forename: Min
authors.initials: M
authors.lastname: Yin
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry*; D003460:Crystallization / Q000379:methods; D005456:Fluorescent Dyes / Q000138:chemical synthesis*; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D013050:Spectrometry, Fluorescence / Q000379:methods*; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D017610:Calcium Compounds; D005456:Fluorescent Dyes; D010087:Oxides; C016538:lime; D015018:Ytterbium