Preparation and luminescent properties of phosphor MGd2(MoO 4)4:Eu3 (M=Ca, Sr and Ba)

Chongfeng Guo*, Hyun Kyoung Yang, Jung Hyun Jeong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

112 Citations (Scopus)

Abstract

Intense red emitting phosphors MGd2(MoO4) 4: Eu3 (M=Ca, Sr and Ba) have been synthesized by the simple solgel technique. The formation processes and the phase impurity of phosphors are characterized by thermogravimetry-differential thermal analysis (TG-DTA) and power X-ray diffraction (XRD). The narrower size distribution and the regular shape of the phosphor particles are also measured by Field emission scanning electronic microscopy (FE-SEM). Photo-luminescent properties of the phosphors are performed at room temperature. Their excitation spectra present strong absorption at 395 nm near-UV light and 465 nm blue light, which match well with commercial LED chips. The phosphors exhibit satisfactory and excellent red light dominated by 616 nm and their photoluminescence intensity is about 34 times stronger than that of phosphor YAG under the 465 nm excitation. In addition, the optimal concentrations of Eu3 for phosphors MGd 2(MoO4)4 (M=Ca, Sr and Ba) have also been determined.

Original languageEnglish
Pages (from-to)1390-1393
Number of pages4
JournalJournal of Luminescence
Volume130
Issue number8
DOIs
Publication statusPublished - Aug 2010

Keywords

  • Luminescence
  • Phosphors
  • Solgel process

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