Peche Herrero, M. A.Maestre Varea, DavidRamirez Castellanos, J.Cremades Rodríguez, Ana IsabelPiqueras de Noriega, JavierGonzález Calvet, J. M.2023-06-192023-06-1920141466-803310.1039/c3ce42188khttps://hdl.handle.net/20.500.14352/33550© 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.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.journal articlehttp://dx.doi.org/10.1039/c3ce42188khttp://pubs.rsc.orgmetadata only access538.9Diluted Magnetic SemiconductorSol-Gel MethodTin OxideRoom-TemperatureHydrothermal SynthesisNanocrystalsGrowthMicrostructureFerromagnetismNanowiresFísica de materiales