Sol–gel synthesis and photoluminescence properties of a novel Dy3+ activated CaYAl3O7 phosphor

  • Zhigao Lei
  • Xuelian Zhang
  • Di Wang
  • Junjie Chen
  • Lin Cong
  • Dawei Meng
  • Yongqian Wang


A series of Dy3+ activated CaYAl3O7 phosphors were successfully synthesized by sol–gel method. The as-prepared phosphors were characterized by X-ray power diffraction (XRD) and photoluminescence (PL). The XRD results indicate that the main phase of the phosphors is CaYAl3O7. Furthermore, the substitution of Dy3+ ions for Y3+ ions gives rise to the diffraction peaks shifting towards smaller angle. The results of PL suggest that the strongest excitation peak at 350 nm is attributed to 6H15/2 to 6P7/2 transition and the emission spectra consist of two intense bands in blue and yellow regions corresponding to 4F9/2 → 6H15/2, 4F9/2 → 6H13/2 transitions, respectively. Therefore, the white-light emission can be achieved. The ratio of yellow emission intensity to blue emission intensity keeps stable along with the doping concentration, implying the structural distortion around Dy3+ sites changes little in the host. Moreover, the emission intensity reach the maximum at 6 at.% doping concentration and the electric dipole–dipole (d–d) interaction is confirmed to be responsible for the energy transfer between Dy3+ ions. These results indicate that Dy3+ activated CaYAl3O7 phosphors have a potential for possible applications in solid-state lighting and display.


Doping Concentration Electric Dipole Transition Magnetic Dipole Transition Major Diffraction Peak Radiation Reabsorption 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Nos. 41472042 and 41172051), the National College Students’ Innovative Training Program (Nos. 201510491032 and 201610491015) and TLOFCUG (No. SKJ 2015040).


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Zhigao Lei
    • 1
  • Xuelian Zhang
    • 1
  • Di Wang
    • 1
  • Junjie Chen
    • 1
  • Lin Cong
    • 2
  • Dawei Meng
    • 1
  • Yongqian Wang
    • 1
  1. 1.Faculty of Materials Science and ChemistryChina University of GeosciencesWuhanPeople’s Republic of China
  2. 2.Jilin Normal University LibraryJilin Normal UniversitySipingPeople’s Republic of China

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