Synthesis and Optical Characterization of Samarium Doped Cerium Fluoride Nanoparticles
Main Article Content
Abstract
CeF3nanoparticles doped with 0; 1.0; 1.5; 2.0; 2.5; 3.0 and 4.0 mol% Sm3+ were prepared by co-precipitation technique. These nanoparticles were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM), photoluminescence (PL), photoluminescence excitation (PLE) spectra, energy-dispersive X-ray (EDS) and absorption spectra. The PL spectra exhibit a group of four emission lines, which are assigned to the transitions from the excited state 4G5/2 to the ground states 6HJ with J = 5/2; 7/2; 9/2 and 11/2 of Sm3+ ion. The intensity of PL related to Sm3+ ion reached to a maximum when the Sm dopant content was 2 mol%. The PLE spectra show 8 lines, which are attributed to the absorption transitions from the 6H5/2 ground state to the 4H(1)9/2, 4D(2)3/2, 6P7/2, 4F(3)7/2, 6P5/2, 4M17/2, 4I(3)13/2 and 4M15/2 excited states. Six lines among eight excitation lines were observed in the diffuse reflection spectra.
Keywords: Co-precipitation, samarium doped cerium fluoride, nanopaticles, absorption, photoluminescence.
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