Photon Up-Conversion with Lanthanide-Doped Oxide Particles for Solar H2 Generation
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Scholar |
Otros documentos de la autoría: Gonell, Francisco; Haro, Marta; S. Sánchez, Rafael; Negro, Patricia; Mora-Sero, Ivan; Bisquert, Juan; Julian-Lopez, Beatriz; Gimenez, Sixto
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http://dx.doi.org/0.1021/jp503743e |
Metadatos
Título
Photon Up-Conversion with Lanthanide-Doped Oxide Particles for Solar H2 GenerationAutoría
Fecha de publicación
2014-05Editor
American Chemical SocietyCita bibliográfica
GONELL, Francisco, et al. Photon Up-Conversion with Lanthanide-Doped Oxide Particles for Solar H2 Generation. The Journal of Physical Chemistry C, 2014, 118.21: 11279-11284.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.acs.org/doi/abs/10.1021/jp503743eVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Up-conversion (UC) of infrared (IR) photons into visible radiation constitutes a promising strategy to enhance the light harvesting efficiency of photovoltaic and photoelectrochemical devices. In the present study, ... [+]
Up-conversion (UC) of infrared (IR) photons into visible radiation constitutes a promising strategy to enhance the light harvesting efficiency of photovoltaic and photoelectrochemical devices. In the present study, we integrate Er3+/Yb3+-codoped yttrium oxide (Y 2O3) submicrometric particles with outstanding up-conversion properties into mesoporous titanium oxide (TiO2) structures sensitized with cadmium selenide (CdSe) for solar hydrogen generation. We demonstrate that the incorporation of these up-converting particles (UCP) leads to effective H2 generation with IR photons. Moreover, based on the analysis of the emission lifetimes, we show that the optical interaction between the emitting UCPs and the CdSe absorber occurs via a radiative emission-reabsorption process. The low cost and toxicity and excellent chemical and thermal stability of our UC phosphors allow envisaging them as real candidates for the new generation of long-term photoelectrochemical devices for solar H2 generation. © 2014 American Chemical Society. [-]
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Journal of Physical Chemistry C Volume 118, Issue 21, May 2014Derechos de acceso
Copyright © 2014 American Chemical Society
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