Charge compensation and enhanced photoluminescence of Sr 2SiO4:Eu3+, Li+ phosphor

Huang Yu Chen, Shoou Jinn Chang, Min Hang Weng, Ru Yuan Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

A Eu3+ activated strontium silicate phosphor was synthesized by solid-state reaction and Li+ ion was added to balance the charge valence. X-ray powder diffraction analysis confirmed the formation of pure Sr2SiO4 phase without second phase or phases of starting materials irrespective of the adding amount of Li+. Scanning electron microscopy showed large particle size and necking shape were obtained as the concentrations of Li+ ions increase. In the PL studies, the excitation spectrum of Sr2SiO4:Eu3+,Li + phosphors exhibited a broad band in the UV region centered at about 270 nm attributed to charge transfer state (CTS) band. As the Li+ ion concentration increased, the photoluminescence intensity of the red emission at 617 nm of Eu3+ ions was enhanced. The results showed that Li + ion is a effective charge compensators used in Sr 2SiO4:Eu3+ phosphor.

Original languageEnglish
Title of host publicationMaterials for Environmental Protection and Energy Application, MEPEA 2011
Pages106-111
Number of pages6
DOIs
Publication statusPublished - 2012
Event2011 International Conference on Materials for Environmental Protection and Energy Application, MEPEA 2011 - Kuala Lumpur, Malaysia
Duration: 2011 Sep 272011 Sep 28

Publication series

NameAdvanced Materials Research
Volume343-344
ISSN (Print)1022-6680

Other

Other2011 International Conference on Materials for Environmental Protection and Energy Application, MEPEA 2011
Country/TerritoryMalaysia
CityKuala Lumpur
Period11-09-2711-09-28

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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