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Autor Maestre Varea, David |
Documentos disponibles escritos por este autor (58)
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Maestre Varea, David ; Palais, O. ; Barakel, D. ; Pasquinelli, M. ; Alfonso, B. ; Gourbilleau, F. ; De Laurentis, M. ; Irace, A. | American Institute of Physics | 2010-03-15SiO_2 multilayers with embedded Si nanocrystals (Si-ncs) were investigated as an approach for developing highly efficient all Si tandem solar cells. The nanostructured samples, fabricated by means of a reactive magnetron sputtering, were structu[...]![]()
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Maestre Varea, David ; Ramírez Castellanos, Julio ; Hidalgo Alcalde, Pedro ; Cremades Rodríguez, Ana Isabel ; Gónzalez Calbet, J.M. ; Piqueras de Noriega, Javier | Wiley-V C H Verlag Gmbh | 2007-04The defect structure of sintered SnO_2 was investigated by high-resolution transmission electron microscopy (HRTEM), cathodoluminescence (CL), and electrical measurements. HRTEM shows the presence of the SnO phase in the sintered samples as well[...]![]()
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Maestre Varea, David ; Cremades Rodríguez, Ana Isabel ; Piqueras de Noriega, Javier | Elsevier Science B.V. | 2009-02-01A study of the variation of structural and optical properties of different SnO2 micro- and nanostructures grown by thermal treatments including a post-growth annealing under argon flow has been carried out. The samples have been characterized by[...]![]()
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Electrical properties of undoped and Mn doped SnO2 microplates and rods are studied by electron beam induced current (EBIC) in a scanning electron microscope (SEM), and I-V curves acquired at room temperature. AFM measurements reveal the formati[...]![]()
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Vázquez López, Antonio ; Yaseen, Anisa ; Maestre Varea, David ; Ramírez Castellanos, Julio ; Marstein, Erik S ; Karazhanov, Smagul Zh ; Cremades Rodríguez, Ana Isabel | MDPI | 2020-02-06In this work, layered hybrid composites formed by tin oxide (SnO) nanoparticles synthesized by hydrolysis and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) have been analyzed. Prior to the composite study, both SnO and PEDO[...]![]()
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Maestre Varea, David ; Hernandez, Elena ; Cremades Rodríguez, Ana Isabel ; Matteo, Amati ; Piqueras de Noriega, Javier | Amer Chemical Soc | 2012-05Microtubes of Er-doped SnO2, as well as nanorods and nanoparticles, have been fabricated by a thermal evaporation deposition method at temperatures between 1400 and 1500 degrees C, by using a pellet of compacted SnO2 and Er2O3 powder mixture as [...]![]()
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Bartolomé Vílchez, Javier ; Maestre Varea, David ; Cremades Rodríguez, Ana Isabel | Wiley?VCH Verlag GmbH | 2018Indium sulfide (In_2S_3) is a promising candidate for the replacement of CdS buffer layers in solar cell devices, while hexaindium heptasulfide (In_6S_7) presents interesting properties for its use as absorber material. In this work the fabricat[...]![]()
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Peche Herrero, M. A. ; Maestre Varea, David ; Ramirez Castellanos, J. ; Cremades Rodríguez, Ana Isabel ; Piqueras de Noriega, Javier ; Gonzalez Calvet, J. M. | RSC Royal Society of Chemistry | 2014SnO_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 liq[...]![]()
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Maestre Varea, David ; Cremades Rodríguez, Ana Isabel ; Piqueras de Noriega, Javier ; Gregorati, Luca | American Institute of Physics | 2008-05-01In-doped SnO_2 microtubes as well as Sn-doped In_2O_3 (ITO) nano- and microislands have been grown by thermal treatment of compacted SnO_2-In_2O powders under argon flow at 1350 degrees C in a catalyst-free process. The SnO_2 tubes contain about[...]![]()
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García Tecedor, Miguel ; Prado Hurtado, Félix del ; Bueno, Carlos ; Vásquez, G. Cristian ; Bartolomé Vílchez, Javier ; Maestre Varea, David ; Díaz, Tomás ; Cremades Rodríguez, Ana Isabel ; Piqueras de Noriega, Javier | American Institute of Materials Science (AIMS) | 2016Microtubes and rods with nanopipes of transparent conductive oxides (TCO), such as SnO_2, TiO_2, ZnO and In_2O_3, have been fabricated following a vapor-solid method which avoids the use of catalyst or templates. The morphology of the as-grown t[...]![]()
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García Tecedor, Miguel ; Prado Hurtado, Félix del ; Torres Padilla, Dorcas I. ; Maestre Varea, David ; Cremades Rodríguez, Ana Isabel | Wiley VCH | 2018-10-10Tin oxide low dimensional structures increasingly attract attention due to their wide application area. Indeed, by attaining new morphologies and properties the potential applications might increase the device portfolio. Furthermore, an adequate[...]![]()
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Bartolomé Vílchez, Javier ; Maestre Varea, David ; Amati, Mateo ; Cremades Rodríguez, Ana Isabel ; Piqueras de Noriega, Javier | Springer | 2013-09-27Indium-zinc oxide nanostructures, such as nanosheets, nanobelts, and wires formed by oriented stacks of nanoplates have been grown by a controlled thermal evaporation method without the use of a foreign catalyst. Surface features in the stacked [...]![]()
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Vásquez, G. C. ; Maestre Varea, David ; Cremades Rodríguez, Ana Isabel ; Ramírez Castellanos, Julio ; Magnano, Elena ; Nappini, Silvia ; Karazhanov, Smagul Zh. | Nature Publishing Group | 2018-05-07The effects of Cr on local environment and electronic structure of rutile TiO? are studied combining theoretical and experimental approaches. Neutral and negatively charged substitutional Cr impurities Cr_(Ti)(0)* and Cr_(Ti)(-1)* as well as Cr[...]