Abstract
A comparative investigation involving experimental and modelling-simulation is carried out to maximize the photovoltaic conversion efficiency (I·) of a DSSC device assembled using N719 dye, an iodide redox liquid electrolyte and TiO 2 electrode. The measured current density-voltage (J-V) characteristics under 1 sun condition of a pre-assembled DSSC is simulated in a tiberCAD based microscopic model (TCMM) along with single-diode based macroscopic model (SDMM). The calibrated model parameters are then utilized for predicting a maximum I· of a DSSC belonging to an unknown electrode’s thickness (L). The microscopic simulations provided a good qualitative nature of J V characteristics curves for different L and I· values. A complete and best J-V curve fitting is achieved using a TCMM by incorporating an unaccounted series resistance of a FTO substrate. Particularly, model simulated J-V characteristics matches perfectly well to experimental results of a post-assembled DSSC device (I·~5.46 %; L~12.0 µm) with a tolerable error (<0.1%).
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