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Indium Zinc Oxide pyramids with pinholes and nanopipes



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Bartolomé, Javier y Maestre Varea, David y Amati, Mateo y Cremades Rodríguez, Ana Isabel y Piqueras de Noriega, Javier (2011) Indium Zinc Oxide pyramids with pinholes and nanopipes. Journal of Physical Chemistry C, 115 (16). pp. 8354-8360. ISSN 1932-7447

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URL Oficial: http://pubs.acs.org/doi/abs/10.1021/jp201076s

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Micropyramids of zinc-doped indium oxide have been grown by thermal treatments of compacted InN and ZnO powders at temperatures between 700:and 900 degrees C Under argon flow. X-ray diffraction (XRD) measurements and energy-dispersive X-ray (EDS) mappings as well as local EDS spectra enable the identification of rough surfaces of the pyramids with the nucleation of a shell of nanocrystallites with high Zn/In ratio because of the formation of Zn(k)In(2)O(k+3). Some of the pyramids have a truncated tip with pinholes with regular crystalline facets. The apexes of these pinhole's present a hollow core or nanopipe The possible relation of the nanopipes with a dislocation driven growth is discussed. A growth model is proposed from the morphology evolution of the pyramids during the formation of the In(2)O(3)-ZnO (IZO) compound X-ray photoelectron spectroscopy and microscopy (XPS-ESCA) Measurements are used to discuss the Zn incorporation as a dopant and the formation of Zn(k)In(2)O(k+3) ternaries. Cathodoluminescence (CL) in the scanning electron microscopy (SEM) shows a dependence of the luminescence of the microstructures on the Zn concentration and the growth temperature.

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©2011 American Chemical Society.
This work was supported by MCINN (MAT2009-07882, CSD2009-00013) and UCM-BSCH (GR58-08).

Palabras clave:Oxide Nanowires, Indium Oxide, Nanostructures, Twist
Materias:Ciencias > Física
Código ID:23007
Depositado:03 Oct 2013 13:00
Última Modificación:06 May 2016 15:24

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