Resumo

GALICIA TORALVA, María; SOLIS, José L  e  GOMEZ, Mónica M. Fabrication and characterization of sensitized solar cells based on TiO₂ modified with NiO nanoparticles. Rev. Soc. Quím. Perú [online]. 2016, vol.82, n.1, pp.87-99. ISSN 1810-634X.

Sensitized solar cells working electrodes of titania (TiO₂) nanoparticles were modified with nickel oxide (NiO), which were synthesized from nickel chloride (NiCl₂.6H₂O). The deposit of the working electrode was performed by Doctor. Blade technique and the sensitization process was performed using commercial dye: Di-tetrabutylammonium cis-bis (isothiocyanato) bis (2,2'-bipyridyl-4,4 '-dicarboxylato) ruthenium (II), also known as N719. The structural and morphological characterization of the working electrodes was performed by X-ray diffraction and scanning electron microscopy, respectively. The photoelectrochemical characterization of the working electrodes and solar cells was performed by measuring the Incident Photon to Current Efficiency (IPCE) and the current-voltage, respectively. Ni concentration in the TiO₂ powder was 125 ppm as determinated by atomic absorption. Efficiency measurements as solar cell, for TiO₂ modified with NiO (TiO₂∙NiO) reached a value of 3.7%, greater than that obtained for solar cells base only on TiO₂, which reached an efficiency of 1, 4 %.

Palavras-chave : sensitized solar cells; titanium dioxide; nickel oxide; nanoparticles.

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