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Indexed by:Journal Papers

Date of Publication:2010-03-18

Journal:JOURNAL OF ALLOYS AND COMPOUNDS

Included Journals:SCIE、EI

Volume:493

Issue:1-2

Page Number:471-475

ISSN No.:0925-8388

Key Words:Sulfate ion; Phase evolution; Electrochemical deposition; ZnO; Zinc hydroxysulfate

Abstract:The effects of SO(4)(2-) ion concentrations on the phase evolution of electrochemical deposited films have been investigated using scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), X-ray diffraction (xRD) and Fourier transform infrared spectroscopy (FTIR). The results show that SO(4)(2-) ion concentration plays a very important role in directing the phase evolution of thick films from rod-like ZnO to plate-like zinc hydroxysulfate under fast hydroxylation. When ZnSO(4) concentrations are below 054 mM, the oriented growth of ZnO rods tends to be enhanced with the increase of ZnSO(4) concentration. Otherwise, the vertically aligned zinc hydroxysulfate plates can be formed by the introduction of SO(4)(2-) ions in nanocrystals. (C) 2009 Elsevier B.V. All rights reserved.