Photoluminescences analysis of CMC-SrAl2O4:Eu3+ nanoparticles at different excitation wavelengths

  • A.A. Nathan
  • A.D. Onoja
  • A.N. Amah
Keywords: CMC, Strontium Aluminate, Excitation/Emission Wavelengths, Photoluminescence.


Photoluminescence characteristics of Sodium Carboxyl Methyl Cellulose (CMC) capped Europium doped Strontium Aluminate nanoparticles at 1000OC using direct chemical combustion techniques is reported. The impact of CMC (-CH2-COOH) as a capping agent on the optical, structural morphology and photoluminescence properties of SrAl2O4:Eu3+ at different excitation wavelength revealed that the obtained structures were monoclinic with the crystal sizes of 39.35nm, and 37.72nm; energy band gap were 4.94eV and 5.02eV for the uncapped and capped phosphor respectively. The Scanning Electron Micrograph shows that the particles were agglomerated and well passivized; Photoluminescence emission broad band was observed with the capped phosphor between 626nm-697nm and uncapped phosphor between 611nm-690nm and visible peak at 694nm (Orange – Red colour). The intensity of the capped phosphor was found to be lower causing luminescence degradation.


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eISSN: 1116-4336