Zobrazeno 1 - 10
of 269
pro vyhledávání: '"V.D. Rodríguez"'
Autor:
Manuel Algarra, Elisa Moretti, M. González-Rodríguez, Enrique Rodríguez-Castellón, L. Díaz, Pedro Núñez, V.D. Rodríguez
Publikováno v:
RIUMA. Repositorio Institucional de la Universidad de Málaga
instname
instname
In order to improve the photocatalytic response of TiO2 to UV and visible light for hydrogen photoproduction, low cost M/TiO2 semiconductor catalysts were prepared by the impregnation method of five different first row transition metals (M = Fe, Co,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22195726fcb4ed7a378a3803cabb7eb7
http://hdl.handle.net/10278/3741573
http://hdl.handle.net/10278/3741573
Autor:
V.D. Rodríguez, R. Fernández-González, Jose J. Velázquez, Pedro Núñez, L. Díaz, E. Pulido Melián
Publikováno v:
Journal of Alloys and Compounds. 721:405-410
TiO2 nano-particles based photocatalysts were modified with different Pt percentages photodeposited on the surface, optimizing the method in order to obtain the best performance for the production of hydrogen. For testing hydrogen production, a novel
Autor:
Anna Lukowiak, F. Rivera-López, Alessandro Chiasera, Pedro Núñez, J. Marrero-Jerez, Mariano Ferrari, Jose J. Velázquez, Fernando J. Lahoz, V.D. Rodríguez, R. Fernández-González, Rogéria Rocha Gonçalves
Publikováno v:
RSC advances 6 (2016): 15054–15061. doi:10.1039/c5ra22630a
info:cnr-pdr/source/autori:Fernandez-Gonzalez, R.; Velazquez, J. J.; Rodriguez, V. D.; Rivera-Lopez, F.; Lukowiak, A.; Chiasera, A.; Ferrari, M.; Goncalves, R. R.; Marrero-Jerez, J.; Lahoz, F.; Nunez, P./titolo:Luminescence and structural analysis of Ce3+ and Er3+ doped and Ce3+-Er3+ codoped Ca3Sc2Si3O12 garnets: influence of the doping concentration in the energy transfer processes/doi:10.1039%2Fc5ra22630a/rivista:RSC advances/anno:2016/pagina_da:15054/pagina_a:15061/intervallo_pagine:15054–15061/volume:6
info:cnr-pdr/source/autori:Fernandez-Gonzalez, R.; Velazquez, J. J.; Rodriguez, V. D.; Rivera-Lopez, F.; Lukowiak, A.; Chiasera, A.; Ferrari, M.; Goncalves, R. R.; Marrero-Jerez, J.; Lahoz, F.; Nunez, P./titolo:Luminescence and structural analysis of Ce3+ and Er3+ doped and Ce3+-Er3+ codoped Ca3Sc2Si3O12 garnets: influence of the doping concentration in the energy transfer processes/doi:10.1039%2Fc5ra22630a/rivista:RSC advances/anno:2016/pagina_da:15054/pagina_a:15061/intervallo_pagine:15054–15061/volume:6
We present research on Ca3Sc2Si3O12 garnets doped with Ce3+ and Er3+ ions that were synthesized by the freeze-drying precursor method. The structural characterization was performed by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS)
Autor:
C. Hernández-Rodríguez, Benjamín González-Díaz, Javier González-Platas, S. González-Pérez, Dietmar Borchert, Ricardo Guerrero-Lemus, V.D. Rodríguez, D. Cañadillas-Ramallo, Joaquín Sanchiz
The most extended Si based conventional photovoltaic cells show low efficiency in the UV region, however this low efficiency can be enhanced by the use of suitable down-shifters or down-converters which transform the wavelength of the incoming radiat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e00e863ebe39ac6ab779d1bc119ca38
https://publica.fraunhofer.de/handle/publica/253586
https://publica.fraunhofer.de/handle/publica/253586
Autor:
V.D. Rodríguez, Victor Tikhomirov, Victor Moshchalkov, Mikhail V. Shestakov, Jose J. Velázquez
Publikováno v:
Advanced Optical Materials. 1:747-752
Visible-to-UV/violet upconversion luminescence is found and studied in oxyfl uoride glass ceramics with Er 3+ dopant concentrations of 3.5, 6.0, or 12.0 mol%, covering a broad pump-power range. The glass ceramics with doping levels of 3.5 and 6.0 mol
Autor:
Ngo Tuan Cuong, V. V. Moshchalkov, Fernando J. Lahoz, Mikhail V. Shestakov, Liviu F. Chibotaru, Minh Tho Nguyen, Jose J. Velázquez, Victor Tikhomirov, V.D. Rodríguez
Publikováno v:
Optical Materials. 35:638-643
Lithium luminescent ZnO:Li nanocrystals have been synthesized. Atomic absorption and optical spectroscopy confirm the high doping level of Li up to 5 at% can be achieved and indicate that the dopants may form neutral Li–Li dimers. The 100 nm width
Publikováno v:
Optical Materials. 34:1994-1997
95SiO 2 –5LaF 3 sol–gel derived nano-glass–ceramics single doped with Ce 3+ or Tb 3+ and co-doped with Ce 3+ –Tb 3+ were synthesized by thermal treatment of precursor glasses. Precipitation of LaF 3 nanocrystals during ceramming process was c
Autor:
J. Méndez-Ramos, Demid A. Kirilenko, Victor Moshchalkov, V.D. Rodríguez, J. del-Castillo, G. Van Tendeloo, Victor Tikhomirov
Publikováno v:
Solar energy materials and solar cells
Er 3+ –Yb 3+ co-doped transparent glass-ceramics with varying Er/Yb content and ratio have been prepared. High quantum yields for up- and down-conversion luminescence by energy transfer from Yb 3+ to Er 3+ and from Er 3+ to Yb 3+ , respectively, ha
Publikováno v:
Applied Physics B. 108:577-583
95SiO2–5LaF3 sol-gel derived nano-glass-ceramics single doped with Eu3+ or Sm3+ and codoped with both of them were successfully obtained. XRD measurements confirm the precipitation of LaF3 nanocrystals after the ceramming process, with mean size ra
Publikováno v:
Journal of Nanoparticle Research. 13:7295-7301
We report a novel class of nanostructured glass-ceramics comprising two co-existing rare-earth doped nanocrystalline phases, SnO2 semiconductor nanocrystal (quantum dot), and LaF3, presenting sizes at around 4.6 and 9.8 nm, respectively, embedded int