CoO doping effects on the ZnO films through EBPDV technique

CoO doping effects on the ZnO films through EBPDV technique

Autor Basso Bernardi, Maria Ines Google Scholar
Queiroz Maia, Lauro June Google Scholar
Antonelli, Eduardo Autor UNIFESP Google Scholar
Mesquita, Alexandre Google Scholar
Li, Maximo Siu Google Scholar
Gama, Lucianna Google Scholar
Instituição Universidade de São Paulo (USP)
Universidade Federal de Goiás (UFG)
Universidade Federal de São Paulo (UNIFESP)
Univ Estadual Paulista
Univ Fed Campina Grande
Resumo Nanometric Zn1-xCoxO ( x = 0.020, 0.025 and 0.030 in mol.%) nanopowders were obtained from low temperature calcination of a resin prepared using the Pechini's method. Firing the Zn1-xCoxO resin at 400 degrees C/2 h a powder with hexagonal structure was obtained as measured by X-ray diffraction (XRD). the powder presented average particle size of 40 nm observed by field emission scanning electronic microscopy (FE-SEM) micrographs and average crystallite size of 10 nm calculated from the XRD using Scherrer's equation. Nanocrystalline Zn1-xCoxO films with good homogeneity and optical quality were obtained with 280-980 nm thicknesses by electron beam physical vapour deposition (EBPVD) under vacuum onto silica substrate at 25 degrees C. Scanning electron microscopy with field emission gun showed that the film microstructure is composed by spherical grains and some needles. in these conditions of deposition the films presented only hexagonal phase observed by XRD. the UV-visible-NIR and diffuse reflectance properties of the films were measured and the electric properties were calculated using the reflectance and transmittance spectra.
Idioma Inglês
Financiador Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Data de publicação 2014-03-01
Publicado em European Physical Journal-applied Physics. Les Ulis Cedex A: Edp Sciences S A, v. 65, n. 3, 8 p., 2014.
ISSN 1286-0042 (Sherpa/Romeo, fator de impacto)
Publicador Edp Sciences S A
Extensão 8
Fonte http://dx.doi.org/10.1051/epjap/2014130225
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000333668000005
Endereço permanente http://repositorio.unifesp.br/handle/11600/37506

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