Characterization and photoluminescence properties of AgLn(MoO4)(WO4): novel silver based scheelite-type compounds

You, Chaoyu and Yue, Lina and Colón Hernández, Cristóbal and Fernández Martínez, Francisco and Lin, Longhui and Gao, Ming (2019). Characterization and photoluminescence properties of AgLn(MoO4)(WO4): novel silver based scheelite-type compounds. "Journal of Luminescence", v. 210 ; pp. 255-260. ISSN 0022-2313. https://doi.org/10.1016/j.jlumin.2019.02.047.

Description

Title: Characterization and photoluminescence properties of AgLn(MoO4)(WO4): novel silver based scheelite-type compounds
Author/s:
  • You, Chaoyu
  • Yue, Lina
  • Colón Hernández, Cristóbal
  • Fernández Martínez, Francisco
  • Lin, Longhui
  • Gao, Ming
Item Type: Article
Título de Revista/Publicación: Journal of Luminescence
Date: June 2019
ISSN: 0022-2313
Volume: 210
Subjects:
Freetext Keywords: Optical properties; Structure characterization; Solid state reactions; Rare earth
Faculty: E.T.S.I. Diseño Industrial (UPM)
Department: Ingeniería Eléctrica, Electrónica Automática y Física Aplicada
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (4MB) | Preview

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.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainMAT2013-44964-RUnspecifiedUniversidad Complutense de MadridMateriales funcionales avanzados: superconductores, magnéticos y nanoestructurados

More information

Item ID: 54124
DC Identifier: http://oa.upm.es/54124/
OAI Identifier: oai:oa.upm.es:54124
DOI: 10.1016/j.jlumin.2019.02.047
Official URL: https://www.sciencedirect.com/science/article/pii/S0022231318324025
Deposited by: Memoria Investigacion
Deposited on: 05 Mar 2019 12:06
Last Modified: 31 Jul 2020 22:30
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM