Red luminescence from hydrothermally synthesized Eu-doped ZnO nanoparticles under visible excitation

Bulletin of materials science

M K Jayaraj¹  P M Aneesh¹ 

[1] Department of Physics, Cochin University of Science and Technology, Kochi 682 022, India$$Department of Physics, Cochin University of Science and Technology, Kochi 682 022, IndiaDepartment of Physics, Cochin University of Science and Technology, Kochi 682 022, India$$

关键词: Zinc oxide;    X-ray diffraction;    transmission electron microscopy;    photoluminescence;    luminescence quenching.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

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-4ð‘�?? 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.

【 授权许可】

Unknown