abstract
Ag-doped and pure zinc oxide (ZnO) nano-plates were successfully synthesized via low cost wet precipitation method. The crystalline phases and the morphological features of the synthesized samples were assessed by X-ray diffraction (XRD) and scanning electron microscopy. These techniques coupled with Energy-dispersive X-ray spectroscopy (EDS) measurements confirmed the incorporation of Ag element into the ZnO matrix. The dielectric loss and ac conductivity were studied as a function of frequency and composition. A detailed analysis of the dielectric loss and ac conductivity as a function of composition were done in a wide frequency range at room temperature. In addition, the charge transport mechanism through the grain and grain boundary regions were investigated using impedance spectroscopy analysis. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
keywords
SOL-GEL METHOD; OPTICAL-PROPERTIES; ZINC-OXIDE; FILMS; CONDUCTIVITY; FREQUENCY; VARISTORS; CERAMICS; FERRITES
subject category
Materials Science
authors
Zamiri, R; Singh, BK; Dutta, D; Reblo, A; Ferreira, JMF
our authors
Avito Rebelo
PhD Student
José Maria da Fonte Ferreira
Retired Professor
Reza Zamiri
Post-doc Fellowshipacknowledgements
The author Reza Zamiri and Budhendra Singh would like to express their personal thanks to FCT (Fundacaopara a Ciencia e a Tecnologia) for post-doctoral research Grants with reference numbers (SFRH/BPD/76185/2011) and SFRH/BPD/76184/2011, respectively.