title: Optical properties of trivalent europium doped ZnO:Zn phosphor under indirect excitation of near-UV light.
abstract: Eu3+, Li+-codoped ZnO:Zn phosphor with intense Eu3+ emissions upon indirect excitation of near-UV light has been synthesized under reducing condition. Steady-state and time-resolved photoluminescence and diffuse reflectance spectra are measured to investigate properties of the luminescence. The results suggest that there exists prominent energy transfer from ZnO host to Eu3+ ions. A series of energy levels as temporary storage of excitation energy play a crucial role on this energy transfer process. Two kinds of Eu3+ sites in Eu3+, Li+-codoped ZnO:Zn are distinguished based on the emission and excitation spectra in comparison with pure Eu2O3.
authors.affiliation: Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China. samson.chenli@gmail.com
authors.forename: Li
authors.initials: L
authors.lastname: Chen
authors.forename: Jiahua
authors.initials: J
authors.lastname: Zhang
authors.forename: Xianmin
authors.initials: X
authors.lastname: Zhang
authors.forename: Feng
authors.initials: F
authors.lastname: Liu
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Wang
mesh_terms: D004307:Dose-Response Relationship, Radiation; D004735:Energy Transfer; D005063:Europium / Q000737:chemistry* / Q000528:radiation effects; D008422:Materials Testing; D055095:Optics and Photonics; D011829:Radiation Dosage; D012666:Semiconductors; D014466:Ultraviolet Rays; D015034:Zinc Oxide / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D005063:Europium; D015034:Zinc Oxide