Memorias de investigación
Research Publications in journals:
Characterization and Photoluminescence Properties of AgLn(MoO4)(WO4): Novel Silver Based Scheelite-type Compounds
Year:2019
Research Areas
  • Physics - Structure of materials
Information
Abstract
Novel silver based rare earth tungstate-molybdate, AgLn(MoO4)(WO4), with scheelite-like structure have been synthesized by ceramic method. The crystal structure, luminescence properties and fluorescence lifetime of a series compounds were investigated systematically. Some special characteristic emission bands were observed which can be attributed by the energy transfer between Ag+ and Ln3+ ions. Especially, AgDy(MoO4)(WO4) and AgHo(MoO4)(WO4) phosphors can emit white light under near-UV excitation, with chromaticity coordinates at about (0.3605, 0.3652) and (0.3559, 0.3479) respectively. Fluorescence lifetime of Eu3+ and Tb3+ were measured in both room temperature and liquid nitrogen temperature. In excitation spectra, the evident blue shift of charge transfer (CT) band in the case of liquid nitrogen temperature indicates that the effective W-O and Mo-O covalence bond is lower at liquid nitrogen temperature which can be caused by the lower wave function overlaps of W-O and Mo-O. Furthermore, low temperature showed positive effect for longer fluorescence lifetime.
International
Si
JCR
Si
Title
Journal of Luminescence
ISBN
0022-2313
Impact factor JCR
2,732
Impact info
Datos JCR del año 2017
Volume
10.1016/j.jlumin.2019.02.047
Journal number
210
From page
255
To page
260
Month
SIN MES
Ranking
Participants
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Análisis y Caracterización Óptica de Materiales