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Zinc-oxide nanowires electrochemically grown onto sol-gel spin-coated seed layers

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Autor dc.contributor.author Bojorge C.D.
Autor dc.contributor.author Kent V.R.
Autor dc.contributor.author Teliz E.
Autor dc.contributor.author Canepa H.R.
Autor dc.contributor.author Henriquez R.
Autor dc.contributor.author Gomez H.
Autor dc.contributor.author Marotti R.E.
Autor dc.contributor.author Dalchiele E.A.
Fecha Ingreso dc.date.accessioned 2014-04-05T00:17:49Z
Fecha Disponible dc.date.available 2014-04-05T00:17:49Z
Fecha en Repositorio dc.date.issued 2014-04-04
dc.identifier 10.1002/pssa.201026752
dc.description.abstract The electrochemical deposition of ZnO nanowires (NW) was optimized by growing onto a previously deposited seed layer. The ZnO seed layer was prepared by a sol-gel process from different precursor solutions and deposited onto FTO/glass by spin coating. Afterwards, NW were electrochemically grown onto those seed layers. The electrolyte was an aqueous solution of the Zn +2 precursor (1 mM zinc acetate) and a supporting electrolyte (0.1 M sodium acetate), saturated with bubbling oxygen. The films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and optical transmittance. The XRD measurements show typical diffraction pattern of ZnO wurtzite structure. The SEM micrographs show the presence of smooth NW with hexagonal sections with diameters ranging from 40 to 250 nm. The optical transmittance reveals the presence of ZnO with bandgap energy between 3.23 and 3.29 eV. These spectra show a monotonically increasing transmittance from the UV into the red part of the spectrum. This feature may be originated in the dispersion of light at the NW and can be used to enhance below-gap absorption. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. en_US
dc.source Physica Status Solidi (A) Applications and Materials Science
Link Descarga dc.source.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-79960095916&partnerID=40&md5=06833ed7553e4b7b6c82adca1019700b
Title dc.title Zinc-oxide nanowires electrochemically grown onto sol-gel spin-coated seed layers en_US
Tipo dc.type Article
dc.description.keywords Band gap energy; Different precursors; Electrochemical deposition; Seed layer; SEM micrographs; Sodium acetate; Supporting electrolyte; Transmittance spectra; Wurtzite structure; XRD measurements; Zinc acetate; ZnO; ZnO nanowires; Diffraction; Electrodeposition; Electrolytes; Gels; Nanowires; Opacity; Reduction; Scanning electron microscopy; Sodium; Sol-gels; Sols; Volatile fatty acids; X ray diffraction; Zinc; Zinc compounds; Zinc oxide; Zinc sulfide; Sol-gel process en_US


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