Effects of rare-earth (Er, La and Yb) doping on morphology and structure properties of ZnO nanostructures prepared by wet chemical method

resumo

Rare-earth (Er, La and Yb) doped ZnO nanostructures have been synthesized by precipitation. The prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). Their optical properties were studied by Raman spectroscopy at room temperature and UV-Visible diffuse reflectance spectroscopy techniques. The effects of rare-earth dopant on morphology and optical properties of the prepared materials were studied and discussed. It was found that the presence of rare-earth ion in crystal structure of ZnO can change the morphology and band gap of ZnO nanostructures. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

palavras-chave

M EMISSION DYNAMICS; OXIDE THIN-FILMS; ZINC-OXIDE; OPTICAL-PROPERTIES; LUMINESCENCE; NANOCRYSTALS; PHOTOLUMINESCENCE; EU

categoria

Materials Science

autores

Zamiri, R; Lemos, AF; Reblo, A; Ahangar, HA; Ferreira, JMF

nossos autores

agradecimentos

The author Reza Zamiri would like to express his personal thanks to FCT (Fundacao para a Ciencia e a Tecnologia) for post-doctoral research grant with reference number (SFRH/BPD/76185/2011).

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