INVESTIGADORES
PARRA Rodrigo
congresos y reuniones científicas
Título:
Ag@ZnO nanoparticles applied in dye solar cells: optical and electrochemical characterization
Autor/es:
M. S. GÓES; M. E. AGUIRRE; Y. DI IORIO; R. PARRA; M. A. GRELA; P. R. BUENO
Lugar:
Curnavaca
Reunión:
Conferencia; Conferencia Internacional Nanoenergía (CINano14); 2014
Institución organizadora:
Society for Nanomolecular Photovoltaics, Spain
Resumen:
Plasmonic-metal nanostructures for efficient conversion of solar to chemical energy have been demonstrated as significant promise. Metal nanoparticles may influence the photovoltaic behavior of semiconductors through the Fermi level equilibration accepting electrons or inducing surface plasmon effects. There is the use structure core@shell type of the Au@TiO2 to give rise to a new generation of plasmonic solar cells1. The zinc oxide (ZnO) has been the object of much research for the solar cell applications as an alternative to TiO2. ZnO has a higher electronic mobility, similar electron affinity and energy level of the conduction band. Thereby, in this work nanocomposite of Ag@ZnO type for application in solar cells was sensitized in different conditions2. The dispersion of nanocomposites on ZnO films shows a marked increase in the photocurrent density (jsc) and increased photopotential (Voc) as a result of the apparent shift Fermi level at more negative potentials. The results of impedance spectroscopy show a decrease in recombination in the Ag@ZnO/Electrolyte interface.