title: Study on luminescent properties of Eu3+ doped new type yttrium tungsten oxide nanophosphors.
abstract: In this paper, a novel nanophosphor, Y10W2O21:Eu, was synthesized through co-precipitation which is a simple and low-costing method. The structure and morphology of the nanocrystal samples were characterized by using XRD and FE-SEM. The emission spectra, excitation spectra and fluorescence decay curves were measured. J-O parameters, quantum efficiencies of Eu3+ 5D0 energy level, color coordinates and Huang-Rhys factor of Y10W2O21:Eu nanophosphors were calculated. The results indicate that EU3+ 5D0-7F2 red luminescence at 610 nm can be effectively excited by 394 nm near-UV light and 464 nm blue light in Y10W2O21 host, which is similar to the familiar Eu3+ doped tungstate phosphors (e.g., Gd2(WO4)3:Eu, CaWO4:Eu). Besides, compared with the other types of tungstate phosphors, a less expensive tungsten was used, which can effectively reduce cost. Therefore, the Y10W2O21:Eu red nanophosphors may have a potential application for white LED.
authors.affiliation: Heilongjiang Key Laboratory Low Dimensional Mesoscopic Physics, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, P. R. China.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Feng
authors.forename: Qingyu
authors.initials: Q
authors.lastname: Meng
authors.forename: Baojiu
authors.initials: B
authors.lastname: Chen
authors.forename: Shuchen
authors.initials: S
authors.lastname: Lu
authors.forename: Jiangting
authors.initials: J
authors.lastname: Sun
authors.forename: Hongyan
authors.initials: H
authors.lastname: Ding