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Indium Zinc Oxide pyramids with pinholes and nanopipes

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Bartolomé, Javier and Maestre Varea, David and Amati, Mateo and Cremades Rodríguez, Ana Isabel and 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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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp201076s


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Abstract

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).

Uncontrolled Keywords:Oxide Nanowires, Indium Oxide, Nanostructures, Twist
Subjects:Sciences > Physics
ID Code:23007
Deposited On:03 Oct 2013 13:00
Last Modified:06 May 2016 15:24

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