Artículo
Optical, electrical and structural characterization of chloridedoped ZnO nanopillars obtained by electrodeposition
Fecha de publicación:
03/05/2016
Editorial:
IOP Publishing
Revista:
Journal of Physics D: Applied Physics
ISSN:
0022-3727
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
As-grown and chloride-doped ZnO nanopillars were electrodeposited onto bareFTO/glass and ZnO-compact layer/FTO/glass substrates. To analyse the effect of the presence of chloride ions in the electrolytic bath, NH4Cl was progressively added up to 0.02 mol L-1. As preliminary examination, the morphology of ZnO nanostructures was analysed by SEM micrographs and chlorine incorporation was detected by EDS. Then, a detailed analysis comprising structural, electrical, optical and defect properties was constructed using XRD, electrical resistance measurements and UV-Vis-IR spectroscopy. As the chlorine concentration in the film increases, XRD reveals a displacement of diffracted planes due to macrostrain of the ZnO lattice and the electrical resistance diminishes. Also, the UV optical absorption edge shifts to higher energies due to Moss-Burstein effect which corresponds to electron densities in the order of 1 to 6 x 1019 cm-3, and the infrared spectra reveal the presence of free electrons, allowing a moreprecise determination of the free electron densities.
Palabras clave:
Zinc Oxide
,
Semiconductors
,
Optical Properties
,
Brazilian Mrs
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Licencia
Identificadores
Colecciones
Articulos(INTEMA)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Citación
Berruet, Mariana; Vazquez, Marcela Vivian; Dalchiele, E.A; Gau, D. L; Marotti, R.E; Optical, electrical and structural characterization of chloridedoped ZnO nanopillars obtained by electrodeposition; IOP Publishing; Journal of Physics D: Applied Physics; 49; 21; 3-5-2016; 215103-215103
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