期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 640, 期 -, 页码 408-415出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2015.03.136
关键词
ZnO nanoparticles; Silver doping; p-type ZnO; Optoelectronic; Density functional theory
资金
- Isfahan University of Technology
Silver-doped ZnO nanoparticles were successfully fabricated at 400 degrees C via a simple and rapid method based on short time solid state milling and calcination of precursor powders. The effect of Ag dilute doping on the structural, optical, and photocatalytic properties of ZnO nanoparticles was investigated by Xray diffraction (XRD), UV-vis spectrophotometer and photoluminescence (PL) spectroscopy. X-ray analysis revealed that Ag doped ZnO solidified in hexagonal wurtzite structure. The intensity of deep level emission was reduced with increasing silver doping in PL measurement. The X-ray photoelectron spectroscopy (XPS) measurement predicted that Ag was mainly in the metallic state and ZnO was in the wurtzite structure. This metallic state accompanied by unique zinc oxide properties decolorized the methyl violet, efficiently. The first-principles calculation represented Ag deep level in ZnO with an n-type behavior, while in ZnO structure with grain boundary p-type nature via shallow states is dominant same as powder samples as studied in this present work. It was suggested that these Ag-doped ZnO nanoparticles may have good applications in optoelectronics, spintronics and wastewater treatment. (C) 2015 Elsevier B.V. All rights reserved.
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