Red luminescence from hydrothermally synthesized Eu-doped ZnO nanoparticles under visible excitation |
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Authors: | P. M. Aneesh M. K. Jayaraj |
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Affiliation: | (1) Physics Department, Faculty of Science, Al-Azhar University, P.O. Box 1277, Gaza, Palestine;(2) Chemistry Department, Faculty of Science, Al-Azhar University, P.O. Box 1277, Gaza, Palestine |
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Abstract: | Eu-doped ZnO nanoparticles were synthesized by hydrothermal method. The Eu-dopant concentration has been varied by varying the amount of Eu-dopant concentration. These nanoparticles were structurally characterized by X-ray diffraction, transmission electron microscopy and selected area electron diffraction and it confirms the formation of nanoparticles having standard wurtzite structure. Photoluminescence studies show that these nanoparticles exhibit a sharp red luminescence due to the intra-4f transitions of Eu3+ ions at an excitation of 397 nm and 466 nm. Luminescence quenching is observed in the nanoparticles as the Eu-dopant concentration increases. Incorporation of Eu in the nanoparticles was confirmed by the energy dispersive X-ray studies. |
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