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Structural and cathodoluminescence assessment of transition metal oxide nanostructures grown by thermal deposition methods

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Díaz-Guerra Viejo, Carlos and Chioncel, M. and Piqueras de Noriega, Javier (2009) Structural and cathodoluminescence assessment of transition metal oxide nanostructures grown by thermal deposition methods. Superlattices and Microstructures, 45 (4-may). pp. 145-150. ISSN 0749-6036

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Official URL: http://dx.doi.org/10.1016/j.spmi.2008.11.014


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Abstract

Nanostructures of two transition metal oxides, WO(3) and α-Fe_2O_3, have been grown by a thermal deposition method without a catalyst and characterized by x-ray diffraction, scanning electron microscopy (SEM), high-resolution transmission electron microscopy and cathodoluminescence (CL) in the SEM. WO(3) micro and nanorods exhibit CL emission two orders of magnitude higher than CL intensity from the untreated oxide. α-Fe_2O_3 nanostructures with different morphologies (wires, belts, rods, urchins) were grown at different temperatures on Fe substrates. CL spectra of these nanostructures show emission bands related to charge transfer and ligand field transitions.


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Additional Information:

©2008 Elsevier Ltd. All rights reserved.
International Workshop on Beam Injection Assessment of Microstructure in Semiconductors (9. 2008. Toledo, España).
This work has been supported by MEC through project MAT2006-01259. MFC acknowledges The financial support received from UCM and Banco Santander.

Uncontrolled Keywords:Optical-Absorption, α-Fe_2O_3, Nanoparticles, Nanowires, IR, UV
Subjects:Sciences > Physics > Materials
ID Code:25721
Deposited On:05 Jun 2014 18:20
Last Modified:12 May 2016 15:53

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