Journal ArticleDOI
Improving open-circuit voltage in DSSCs using Cu-doped TiO2 as a semiconductor
Javier Navas,Concha Fernández-Lorenzo,Teresa Aguilar,Rodrigo Alcántara,Joaquín Martín-Calleja +4 more
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TLDR
In this article, the effect of copper-doped TiO2 in dye-sensitized solar cells (DSSCs) was analyzed with several instrumental techniques, including X-ray diffraction (XRD), inductively coupled plasma atomic emission spectroscopy (ICP-AES), scanning transmission electron microscopy (STEM), and UV-Vis spectroscopic analysis.Abstract:
TiO2 doping has been widely used in photocatalysis and photovoltaic cells to improve the performance of this semiconductor. This paper studies the use of copper as a dopant in TiO2 in dye-sensitized solar cells (DSSC), analysing the effect on the photovoltaic properties of the cells of different concentrations of copper incorporated into the semiconductor. The copper-doped TiO2 semiconductor was characterized with several instrumental techniques, including X-ray diffraction (XRD), inductively coupled plasma atomic emission spectroscopy (ICP-AES), scanning transmission electron microscopy (STEM), and UV–Vis spectroscopy in order to know its structure, composition and band gap energies with different concentrations of the dopant. An analysis was also performed of the variations in open-circuit voltage depending on the concentration of copper. This showed that the presence of copper in DSSCs made with a standard configuration – using a ruthenium complex (N3) as a dye and the redox pair as the electrolyte with 3-methoxypropionitrile as a solvent – leads to improvements of up to 10% in the open-circuit voltage of DSSCs.read more
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Recent advances in dye-sensitized solar cells: from photoanodes, sensitizers and electrolytes to counter electrodes
Meidan Ye,Xiaoru Wen,Mengye Wang,Mengye Wang,James Iocozzia,Nan Zhang,Changjian Lin,Zhiqun Lin +7 more
TL;DR: In this article, a review of dye-sensitized solar cells (DSSCs) and their key components, including the photoanode, sensitizer, electrolyte and counter electrode, is presented.
Journal ArticleDOI
Doping of TiO2 for sensitized solar cells
TL;DR: It was found that nearly every employed dopant can be used to increase device performance, indicating that the improvement is not so much caused by the dopant itself, as by the defects it eliminates from TiO2.
Journal ArticleDOI
A route for the synthesis of Cu-doped TiO2 nanoparticles with a very low band gap
Teresa Aguilar,Javier Navas,Rodrigo Alcántara,Concha Fernández-Lorenzo,Juan Jesús Gallardo,Ginesa Blanco,Joaquín Martín-Calleja +6 more
TL;DR: In this article, a method for the synthesis of copper-doped TiO2 nanoparticles was presented, and the semiconductors synthesized were characterized in order to know the composition, crystalline structure, the band gap energy, etc.
Journal ArticleDOI
Applications of metal oxide materials in dye sensitized photoelectrosynthesis cells for making solar fuels: let the molecules do the work
TL;DR: In this article, an approach to solar fuels is described based on Dye Sensitized Photoelectrosynthesis Cells (DSPEC) that mimic the configuration used in Dye-Sensitive Solar Cells (DSSC), but with the goal of producing oxygen and a high energy solar fuel in the separate compartments of a photoelectrochemical cell rather than a photopotential and photocurrent.
Journal ArticleDOI
Experimental and theoretical study of the electronic properties of Cu-doped anatase TiO2.
Javier Navas,Antonio Sánchez-Coronilla,Teresa Aguilar,Norge Cruz Hernández,Norge Cruz Hernández,Desireé M. de los Santos,Jesús Sánchez-Márquez,David Zorrilla,Concha Fernández-Lorenzo,Rodrigo Alcántara,Joaquín Martín-Calleja +10 more
TL;DR: The inclusion of Cu in the anatase structure implies a covalent character in the Cu-O interaction, which involves the appearance of new states in the valence band maximum with a narrowing in the band gap.
References
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Journal ArticleDOI
Electrochemical Photolysis of Water at a Semiconductor Electrode
Akira Fujishima,Kenichi Honda +1 more
TL;DR: Water photolysis is investigated by exploiting the fact that water is transparent to visible light and cannot be decomposed directly, but only by radiation with wavelengths shorter than 190 nm.
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A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films
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Conversion of light to electricity by cis-X2bis(2,2'-bipyridyl-4,4'-dicarboxylate)ruthenium(II) charge-transfer sensitizers (X = Cl-, Br-, I-, CN-, and SCN-) on nanocrystalline titanium dioxide electrodes
Mohammad Khaja Nazeeruddin,Andreas Kay,I. Rodicio,Robin Humphry-Baker,E. Mueller,Paul Liska,Nick Vlachopoulos,Michael Graetzel +7 more
TL;DR: Cis-X 2 Bis(2,2'-bipyridyl-4,4'-dicarboxylate)ruthenium(II) complexes were prepared and characterized with respct to their absorption, luminescence, and redox behavior.
Journal ArticleDOI
Novel Carbon-Doped TiO2 Nanotube Arrays with High Aspect Ratios for Efficient Solar Water Splitting
TL;DR: The preparation of vertically grown carbon-doped TiO(2) (TiO( 2-x)C(x) nanotube arrays with high aspect ratios for maximizing the photocleavage of water under white-light irradiation showed much higher photocurrent densities and more efficient water splitting under visible-light illumination than pure TiO (2) nanOTube arrays.