One-step electrodeposition of Ag-decorated ZnO nanowires |
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| Authors: | B Slimi I Ben Assaker A Kriaa B Marí R Chtourou |
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| Institution: | 1.Laboratoire de Nanomatériaux et Systèmes pour les Energies Renouvelables (LaNSER),Centre de Recherches et des Technologies de l’Energie Technopole BorjCedria,Hammam Lif,Tunisie;2.Faculté des Sciences de Bizerte,Université de Carthage,Carthage,Tunisie;3.Laboratoire de Chimie Moléculaire Organique,Tunis,Tunisie;4.Departament de Física Aplicada-IDF,Universitat Politècnica de València,València,Spain |
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| Abstract: | A new route for synthesizing Ag-decorated ZnO nanowires (NWs) on conductive glass substrates using a one-step electrodeposition technique is described here. The structural, optical, and photoelectrochemical properties of Ag-decorated ZnO nanowires were studied in detail using techniques such X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, UV-visible spectroscopy, photoluminescence, and photoelectrochemical measurements. Both pure and Ag-decorated ZnO nanowires were found to crystallize in the wurtzite structure, irrespective of their Ag contents. Increasing the Ag content from pure ZnO NWs to 3% Ag ZnO NWs decreases the photoluminescence intensity, shifts the optical band gap to the red, and increases the photocurrent up to threefold. This behavior was attributed to the surface plasmon resonance effect induced by the Ag nanoparticles, which inhibits charge recombination and improves charge transport on the ZnO surface. |
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