Gd2O3:RE3+ and GdAlO3:RE3+ (RE = Eu, Dy) phosphor: Synthesis, characterization and bioimaging application

Thangaraj Selvalakshmi, Parthiban Venkatesan, Shu-Pao Wu, S. Velmathi, A. Chandra Bose*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Citrate based sol-gel method is used to synthesize Gd2O3:RE3+ and GdAlO3:RE3+ (RE = Eu, Dy) phosphors. In the present work, the phosphors are characterized using the techniques like X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), diffuse reflectance spectroscopy (DRS) and photoluminescence spectroscopy (PL). Fluorescence confocal microscopy reveals the potential usage of phosphors in biological medium for biolabeling application. XRD patterns confirm the phase purity of Gd2O3 and GdAlO3. The crystallite size and lattice parameters are estimated from XRD result. FTIR spectra are used to investigate the functional group present in the phosphor. The optical emission properties imply that the emission peak positions on Eu3+ or Dy3+ ion are size and host independent. Finally, RAW 264.7 macrophages cell line is used to test the bioimaging performance of the phosphors.

Original languageEnglish
Pages (from-to)1178-1184
Number of pages7
JournalJournal of Nanoscience and Nanotechnology
Volume17
Issue number2
DOIs
StatePublished - 1 Jan 2017

Keywords

  • Bioimaging
  • Dy
  • Eu
  • Photoluminescence
  • RAW 264.7

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