Effect of the electrophoretic deposition of Au NPs in the performance CdS QDs sensitized solar cells
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Otros documentos de la autoría: Zarazúa, Isaac; Esparza, Diego; López-Luke, Tzarara; Ceja-Fernández, A.; Reyes-Gomez, J.; Mora-Sero, Ivan; Rosa, Elder de la
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
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INVESTIGACIONMetadatos
Título
Effect of the electrophoretic deposition of Au NPs in the performance CdS QDs sensitized solar cellsAutoría
Fecha de publicación
2016Editor
ElsevierISSN
0013-4686Cita bibliográfica
ZARAZÚA, I., et al. Effect of the electrophoretic deposition of Au NPs in the performance CdS QDs sensitized solar Cells. Electrochimica Acta, 2016, vol. 188, p. 710-717Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.sciencedirect.com/science/article/pii/S0013468615309014Versión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
Solution-processed mesoscopic oxide semiconductor-based materials offer potentially low-cost and high stability alternative for next generation of solar cells, and metallic nanoparticles had shown to be a good alter ... [+]
Solution-processed mesoscopic oxide semiconductor-based materials offer potentially low-cost and high stability alternative for next generation of solar cells, and metallic nanoparticles had shown to be a good alternative to improve specific parameters in such kind of devices. In the present work, it is showed the systematic study of the effect of electrophoretic gold nanospheres (Au NPs) with cadmium sulfide Quantum Dots (CdS QDs) sensitized TiO2 solar cells. Au NPs were added by electrophoretic deposition at several times (0.5, 2.5 and 7.5 minutes) and CdS QDs were deposited by a Successive Ionic Layer Absorption and Reaction (SILAR) method. Electrophoretic deposition allowed to significantly decrease the Au NPs deposition times respect previously reported methods. The results show that Au NPs reduce the photocurrent (from 9.85 to 9.44 mA/cm2) at the same time that increase the open circuit voltage (Voc) (from 575 to 618 mV) and the Fill Factor (FF) (from 46 to 51%) which result in a final increase of the photoconversion efficiency (η) (from 2.63 to 2.96% for 0.5 min of deposit). A systematic characterization permitted to identify the origin of the variations observed in the solar cell parameters with and without Au NPs. Incident Photon to Current conversion efficiency (IPCE) demonstrate that the Au NPs reduces the amount of light that reach the CdS QDs and Impedance Spectroscopy (IS) analysis, indicates a downshift in the TiO2 conduction band (CB) and decreases the recombination processes, resulting in the observed increase in the FF and Voc. [-]
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