Volume 25 - ICOP & ICPET 2019
ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 493-496 |
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1- Department of Physics, Faculty of Science, University of Isfahan, Isfahan
2- Department of Chemistry, University of Isfahan, Isfahan
2- Department of Chemistry, University of Isfahan, Isfahan
Abstract: (1659 Views)
In this paper, pure phase Gd2SiO5 doped with cerium nanopowders were successfully synthesized by the Pechini sol-gel method. Formation and purity of nanopowders were confirmed by XRD and FTIR analyses and their crystallite size and crystal lattice strain were estimated to be 49 nm and 0.09% respectively. The morphology of the nanopowders and their elemental chemical composition were investigated by FESEM and EDX analyses. Studies have shown that most of nanoparticles have a size range between 100-400 nm. Then, the indirect band gap was estimated to be 4.4 eV using the DRS technique and the Tauc equation. The results have shown that doping with 2 mol% cerium concentration produces the highest photoluminescence intensity at 435 nm under excitation at 345 nm.
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