Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
ORGANIC AND NATURAL DYE IMPACTS ON SOLAR CELLS SENSITIZED BY LANTANA REPENS DYE COMBINED WITH THIN FILM SEMICONDUCTOR ELECTRODES
Submission Author:
Daniel Sampaio , RJ
Co-Authors:
Breno Ferreira, Daniel Sampaio, Francisco Ferreira, SURESH BABU RAJENDRAN, Ana Barros
Presenter: Breno Ferreira
doi://10.26678/ABCM.COBEM2019.COB2019-0896
Abstract
Dye-sensitized solar cells (DSSC’s) have been considered as an alternative energy resource in recent years, due to low-cost fabrication and non-toxicity, compared to silicon-based and thin film solar cells. These cells were sensitized by a natural and organic dye extracted from Lantana repens flowers with high anthocyanin concentration, and it was analyzed by UV-spectrum. Photo-anodes and photo-cathode films with different nanostructured forms. The electrodes were morphologically and structurally were characterized by atomic force microscopy and scanning electron microscopy. The Fourier Transform Infrared (FTIR) spectrum was obtained after the dye coating on a semi-conductive layer, to identify the light absorbance behavior according to the functional groups present in the dye molecules. The photovoltaic performance and electrochemical impedance spectroscopy studies were carried out to understand the effect of the different photo-anodes and the interaction with the dye molecules on the cell’s efficiency. In this work, we present the results towards the construction, characterization, and integration of these DSSC’s. The increasing of short-circuit current and chemical stability of the device, exhibit promising characteristics compared to other natural dyes, to extend the natural dye-based DSSC’s fabrication for large-scale production.
Keywords
Dye-sensitized solar cells, natural dyes, nanostructured semiconductors
