Study of the Nb2O5 Insertion in ZnO to Dye-sensitized Solar Cells

Dye-sensitized solar cells (DSSC) have received much attention as an alternative to silicon-based solar cells, due to various advantages. Zinc oxide (ZnO) is an n-type semiconductor employed as photoanode on DSSC. The decrease of charge recombination is an efficient strategy capable of improving the...

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Published in:Materials research (São Carlos, São Paulo, Brazil) São Paulo, Brazil), 2019, Vol.22 (suppl 1), p.1
Main Authors: Valerio, Tatiana Lima, Maia, Guilherme Arielo Rodrigues, Gonçalves, Letícia Fernanda, Viomar, Aline, Banczek, Everson do Prado, Rodrigues, Paulo Rogério Pinto
Format: Article
Language:English
Subjects:
charge recombination
Crystal structure
Crystals
DSSC
Dye-sensitized solar cells
Dyes
ENGINEERING, CHEMICAL
Fourier transforms
MATERIALS SCIENCE, MULTIDISCIPLINARY
METALLURGY & METALLURGICAL ENGINEERING
N-type semiconductors
Niobium oxides
Photovoltaic cells
photovoltaic device
X-ray fluorescence
Zinc oxide
Zinc oxides
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Summary:Dye-sensitized solar cells (DSSC) have received much attention as an alternative to silicon-based solar cells, due to various advantages. Zinc oxide (ZnO) is an n-type semiconductor employed as photoanode on DSSC. The decrease of charge recombination is an efficient strategy capable of improving the photovoltaic performance of the device. In this perspective, Nb2O5 was added on ZnO solar cells. The oxides were characterized by the X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR) and X-ray fluorescence (XRF). The photovoltaic parameters were obtained through J-V plots and photocronoamperometry. The results showed that the niobium oxide obtained presented orthorhombic crystal structure and DSSC with the addition of niobium oxide showed better efficiency, of 1.42% when compared the device with only ZnO.
ISSN:1516-1439
1980-5373
1980-5373
DOI:10.1590/1980-5373-mr-2018-0864