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Hybrid inorganic-organic solar cells are an attractive alternative energy source because of their low-cost production and ability to make use of a large amount of solar radiation available. This work aims to evaluate different solar cells composed of TiO 2 and ZnO with P3OT/P3MT copolymer. Layers of semiconductor oxides were deposited on transparent fluorine-doped tin oxide (FTO) by spin coating and adsorption in the polymer solution. X-ray diffraction (XRD), scanning electron microscopy (SEM), were used to characterize the fabricated semiconductors and curves of current density vs. potential (j-V), photochronoamperometry (j-t) and electrochemical impedance spectroscopy (EIS) were used to determine their electrical characteristics. The XRD analyses confirmed the crystalline nature of the oxide materials. SEM micrographs showed the spherical morphology of ZnO and the poorly defined agglomerate morphology of TiO 2. The electrochemical measurements proved that the best cell was produced with P3OT/P3MT copolymer and TiO 2 , owing to its lower charge transfer resistance, with the following photovoltaic parameters: V oc = 0.615 V ± 0.004, j sc = 1.545 mA cm-2 ± 0.240, FF = 0.637 ± 0.003, and η = 0.617% ± 0.117.
ResumoA corrosão é um processo indesejável que ocorre em materiais metálicos. Nesse trabalho, estudou-se o efeito inibidor do benzotriazol (BTAH), benzimidazol (BZM) . O aumento da efi ciência inibidora em relação às substâncias estudadas seguiu a seguinte ordem: Indol < BZM < BTAH. Os resultados obtidos nas curvas de polarização anódica foram comprovados por espectroscopia de impedância eletroquímica e pelas análises microscópicas.
Palavras-chave: Corrosão, inibidores, aço inoxidável.
Abstract
Corrosion is an undesirable process that occurs in metallic materials. Studied was the effect of inhibiting Benzotriazole (BTAH), Benzimidazole (BZM) and Indole in different concentrations for the stainless steel (SS) AISI
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