Universidad Complutense de Madrid
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The controlled transition-metal doping of SnO_2 nanoparticles with tunable luminescence

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Peche Herrero, M. A. y Maestre Varea, David y Ramirez Castellanos, J. y Cremades Rodríguez, Ana Isabel y Piqueras de Noriega, Javier y González Calvet, J. M. (2014) The controlled transition-metal doping of SnO_2 nanoparticles with tunable luminescence. CrystEngComm, 16 (14). pp. 2969-2976. ISSN 1466-8033

URL Oficial: http://dx.doi.org/10.1039/c3ce42188k


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http://pubs.rsc.orgEditorial


Resumen

SnO_2 nanoparticles doped with transition metals (V, Cr, Mn) have been synthesized by both the hydrothermal method (HDT) in a basic media and the liquid mixed method (LQM) based on the Pechini method. Nanocrystalline particles obtained via a liquid mixed technique show a well-defined chemical composition and an average size of 6 nm, with a high degree of both crystallinity and chemical homogeneity. Nanoparticles prepared via a hydrothermal method exhibit a high dispersion in size as well as agglomeration effects. As the LQM demonstrates advantages with respect to the HDT, a more detailed investigation has been carried out on the SnO_2 nanoparticles doped with V, Cr and Mn grown by this method. The microstructure of the materials was elucidated by means of X-ray Diffraction (XRD), Selected-Area Electron Diffraction (SAED), and High-Resolution Transmission Electron Microscopy (HRTEM). Luminescence from undoped and doped SnO_2 nanoparticles was characterized by cathodoluminescence (CL). The luminescence studies demonstrate a strong dependence of CL signals with transition metal doping, thus inducing red, green or orange emissions when doping with Cr, V or Mn respectively.


Tipo de documento:Artículo
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© RSC Royal Society of Chemistry.
This work was supported by MEC (MAT2012-39159 and Consolider CSD 2009-00013). The authors are grateful to the National Centre for Electron Microscopy (CNME) at Universidad Complutense de Madrid.

Palabras clave:Diluted Magnetic Semiconductor, Sol-Gel Method, Tin Oxide, Room-Temperature, Hydrothermal Synthesis, Nanocrystals, Growth, Microstructure, Ferromagnetism, Nanowires
Materias:Ciencias > Física > Física de materiales
Código ID:25626
Depositado:05 Jun 2014 16:13
Última Modificación:05 Jun 2014 16:13

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