Preparation and luminescence of red light-emitting phosphors based on Li3Ba2Ln3-xEux (MoO 4)8 by sol-gel method

Fei Gao*, Li Fang Liang, Chong Feng Guo

*Corresponding author for this work

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

A novel red light-emitting phosphors of Li3Ba 2Ln,3-xEux(MoO4)8 were synthesized by sol-gel method. According to X-ray diffraction, the materials belongs to monoclinic system. The structure and luminescent properties of these phosphors were investigated by emission and excitation spectra in details. The main emission peak of the samples is at 616 nm. Effect of the dosage of eitrie acid and polyethylene glycol and the aetivator concentration on the crystal structure, morphology and luminescent properties were investigated by using XRD, SEM. These results showed that this phosphor can be effectively excited by ultraviolet (UV) (395 nm) and blue (465 nm) light, matching the output wavelengths of ultraviolet or blue LED chips. Integrated emission intensity of Li3Ba2Y2. 8Eu0. 2(MoO 4)8 is the strongest in the series of the Li 3Ba2Ln3-xEux(MoO4) 8(Ln = La, Gd, Y) phosphors. The Li3Ba2Zn 3-nEux(MoO4)8(Ln = La, Gd, Y) phosphors might be a better candidate for solid state lighting application.

Original languageEnglish
Pages (from-to)610-616
Number of pages7
JournalChinese Journal of Luminescence
Volume30
Issue number5
Publication statusPublished - Oct 2009

Keywords

  • Molybdate
  • Red phosphor
  • Sol-gel

Fingerprint Dive into the research topics of 'Preparation and luminescence of red light-emitting phosphors based on Li3Ba2Ln3-xEux (MoO 4)8 by sol-gel method'. Together they form a unique fingerprint.

  • Cite this