Luminescent Properties of Samarium Ion in Calcium Molybdate

【Author】

Hu Yunsheng(1, 2), Zhuang Weidong(~(1 *), Ye Hongqi~2(1. National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous Metals, Grirem Advanced Materials Corpration Limited, Beijing 100088, China; 2. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China)

【Abstract】

Trivalent samarium ion (Sm~(3+)) activated calcium molybdate (CaMoO_4) phosphor was prepared by solid-state reaction in air. The XRD pattern of the powder CaMoO_4∶Sm shows that the CaMoO_4∶Sm single phase is developed fully through our preparation procedure. The excitation spectrum of CaMoO_4∶Sm is composed of a broad absorption of host and some sharp lines of the f-f transition absorption of Sm~(3+). Illustrated in photoluminescence spectrum, CaMoO_4 doped with Sm~(3+) displays orange red emission that is ascribed to the inner 4f~5 electron transitions ~6H_(7/2)(orange)and ~6H_(9/2)(red)of Sm~(3+). Different from the sites of Sm~(3+) in CdWO_4, the Sm~(3+) ions substitute for the Ca~(2+) and form only one type emission center in the CaMoO_4 crystal lattice.

【Keywords】

photoluminescence; calcium molybdate; samarium, rare earths

References

To explore the background and basis of the node document

Springer Journals Database

Total: 8 articles

  • [1] ChenW ;SuMz;ZhaBB ,etal, ThermoluminescenceofBaFClxBr1-x∶SmSystemandassignmentoftheirglowpeaks, J .RareEarths,
  • [2] WuJP ;NewmanD ;VineyIVF, StudyonrelationshipofluminescenceinCaS∶Eu,Smanddopantsconcentration, J .Lumin, Journal of Luminescence (Journal of Luminescence)
  • [3] LiangJK, PhaseDiagramsandPhaseStructures,
  • [4] RambabuU ;KhannaPK ;BuddhuduS, Fluorescencespec traofSm3+ dopedrareearthoxybromidepowderphosphors, Mater.Lett, Materials Letters (Materials Letters)

More>>

Similar documents

Documents that have the similar content to the node document

More>>