Effect of Al/Sr ratio on properties of strontium aluminate long lasting phosphor

Lin Luan*, Chong Feng Guo, De Xiu Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


The relation between properties of strontium aluminate phosphor and Al/Sr ratio was investigated. A series of strontium aluminate phosphors with different Al/Sr ratios from 1.0 to 12.0 were synthesized by solid-state method. The samples were characterized by X-ray diffraction and photoluminescence spectra. The results reveal that single phases of SrAl2O4:Eu2+, Dy3+, Sr4Al14O25:Eu2+, Dy3+ and SrAl12O19:Eu2+, Dy3+ are obtained with Al/Sr ratios of 2.0, 3.5 and 10.0 respectively. When Al/Sr selects other values, the final products are mixture. Moreover, the emission spectra of the samples shift to blue-ultraviolet short wavelength from yellow-green long wave with the increase of Al/Sr ratios, which result from change of products' composition.

Original languageEnglish
Pages (from-to)53-56
Number of pages4
JournalWuji Cailiao Xuebao/Journal of Inorganic Materials
Issue number1
Publication statusPublished - Jan 2009


  • Al/Sr
  • Aluminate
  • Long afterglow


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