High efficient yvpo4 luminescent materials activated by europium

Tamara Minakova, Sergey Mjakin, Vadim Bakhmetyev, Maxim Sychov, Ilya Zyatikov, Irina Ekimova, Vladimir Kozik, Yu Wen Chen, Irina Kurzina

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

YPO4:Eu, YVO4:Eu, and YVPO4:Eu based phosphors with various Eu(III) activator contents and phosphate-vanadate ratios were synthesized by the self-propagating high-temperature synthesis method. The samples were characterized by scanning electron microscopy, nitrogen sorption, acid-base indicators and photoluminescence. The particle surface features with a finely dispersed structure comprising all the involved elements. The pore structure and the specific surface areas of the samples were different depending on the compositions of the samples. The most finely dispersed sample was YVO4:Eu samples. The specific surface areas of the YPO4:Eu samples were 10 to 15 times greater than those of vanadate samples. The phosphors samples had a slightly basic (YVO4:Eu, YVPO4:Eu) or slightly acidic (YPO4:Eu) properties of the surface with different contents of Lewis and Brönsted sites. The differences in the compositions and acid-base state resulted in the difference in the intensity and brightness of the photoluminescence (PL) of the samples. The yttrium-phosphate-vanadate phosphors of the mixed YVx P1−x O4-Eu had higher brightness and PL intensity than those samples with similar phosphate as well as vanadate phosphors.

Original languageEnglish
Article number658
JournalCrystals
Volume9
Issue number12
DOIs
StatePublished - Dec 2019

Keywords

  • Eu(III)-activator
  • Photoluminescence
  • Surface acidity
  • Vanadate-phosphate yttrium phosphors

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