title: Photoluminescence of ZnO:Eu3+ nanoflowers.
abstract: The synthesis of ZnO:Eu3+ nanoflowers by a low-temperature hydrothermal route is described. Characterization of the materials was performed by ESEM, XRD and FTIR spectra. The 355 nm excited photoluminescence spectra at 10 K do not indicate the presence of Eu2+ or the ZnO defect states which give rise to green or red broadband emission. Excitation into the ZnO conduction band at low temperature does not give emission from Eu3+. Selective excitation of the Eu3+ emission shows that EU3+ ions occupy a variety of different sites, of which one of them is similar to EU3+ in C-type Eu2O3.
authors.affiliation: Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, PR China.
authors.forename: Peter A
authors.initials: PA
authors.lastname: Tanner
authors.forename: Lixin
authors.initials: L
authors.lastname: Yu