Recombination Study of Dye Sensitized Solar Cells with Natural Extracts
Gideã T. Tractz
Aline Viomar
Bianca V. Dias
Camila A. de Lima
Everson P. Banczek
Maico T. da Cunha
Sandra R. M. Antunes
Paulo R. P. Rodrigues
10.6084/m9.figshare.7678502.v1
https://scielo.figshare.com/articles/dataset/Recombination_Study_of_Dye_Sensitized_Solar_Cells_with_Natural_Extracts/7678502
<div><p>Natural dyes can be used in dye sensitized solar cells (DSSCs) to generate low-cost devices, although with low light harvesting because of energy losses from the recombination process. This study investigates recombination reactions in DSSCs with natural dyes extracted from eggplants, plums, and hibiscus flowers. Titanium dioxide films were coated on a fluorine-doped tin oxide glass conductor substrate by the doctor blading method and impregnated in a dye solution for 24 h. Electrodeposited platinum was used as the cathode, and I3–/I– as the redox couple. The techniques employed were: intensity modulated photovoltage spectroscopy, intensity modulated photocurrent spectroscopy, electrochemical impedance spectroscopy, charge extraction, and cyclic voltammetry. The results show that cells containing plum dye exhibited the best photovoltaic parameters, with high values of gap, charge extraction, and potential, being less resistive to charge transfer with an electron lifetime of 0.51 s, collection time of 8.54 ms, and charge efficiency collection of 0.99.</p></div>
2019-02-06 03:16:49
Gratzel cell
IMVS
IMPS photovoltaic devices