title: [Luminescence properties of Eu3+/Dy3+ coating ZnO nanocrystals].
abstract: Some kinds of phosphors were synthesized with Eu/Dy coating ZnO nanocrystals by co-precipitation approach derived from Zn(AC)2 2H2O, NaOH as precursors. The crystal structure and size were characterized by the X-ray diffraction Photoluminescence(PL) measurements show an intense red luminescence at 612 nm caused by transition of Eu3+ ions in ZnO:Eu3+ and intense luminescence band at 484 and 575 nm caused by transition of Dy3+ ions in ZnO:Dy3+. The results show that the energy transfer was realized from the host to the rare earth ions. The mechanism of the energy transfer was discussed. Meanwhile Eu/Dy co-coating nano ZnO can be achieved white light emission by energy transfer.
authors.affiliation: School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China. lcxsr_07@163.com
authors.forename: Chen-xing
authors.initials: CX
authors.lastname: Liao
authors.forename: Yin-hai
authors.initials: YH
authors.lastname: Wang
authors.forename: Yi-hua
authors.initials: YH
authors.lastname: Hu
authors.forename: Li
authors.initials: L
authors.lastname: Luo
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang