Tunable photoluminescence and magnetic properties of Dy3+ and Eu3+ doped GdVO4 multifunctional phosphors. Issue 40 (22nd September 2015)

• Record Type: Journal Article
• Authors: Liu, Yanxia; Liu, Guixia; Dong, Xiangting; Wang, Jinxian; Yu, Wensheng
• Is Part Of: Physical chemistry chemical physics. Volume 17:Issue 40(2015)
• Page Start: 26638
• Page End: 26644
• Publication Date: 2015-09-22
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c5cp04373e
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : Multicolor photoluminescence is realized in the Dy 3+ and Eu 3+ co-doped GdVO4 system by adopting different excitation wavelengths or adjusting the appropriate concentration of Dy 3+ and Eu 3+ ions. Abstract : A series of Dy 3+ or/and Eu 3+ doped GdVO4 phosphors were successfully prepared by a simple hydrothermal method and characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectrometry (EDS), photoluminescence (PL) spectroscopy and vibrating sample magnetometry (VSM). The results indicate that the as-prepared samples are pure tetragonal phase GdVO4, taking on nanoparticles with an average size of 45 nm. Under ultraviolet (UV) light excitation, the individual Dy 3+ or Eu 3+ ion activated GdVO4 phosphors exhibit excellent emission properties in their respective regions. The mechanism of energy transfer from the VO4 3− group and the charge transfer band (CTB) to Dy 3+ and Eu 3+ ions is proposed. Color-tunable emissions in GdVO4 :Dy 3+, Eu 3+ phosphors are realized through adopting different excitation wavelengths or adjusting the appropriate concentration of Dy 3+ and Eu 3+ when excited by a single excitation wavelength. In addition, the as-prepared samples show paramagnetic properties at room temperature. This kind of multifunctional color-tunable phosphor has great potential applications in the fields of photoelectronic devices and biomedical sciences.