Thickness-Driven Device Characteristics of MAPbI₃ Perovskite Solar Cells: Insights from SCAPS-1D Modelling
DOI:
https://doi.org/10.5281/zenodo.18375174Keywords:
Perovskite solar cells, SCAPS-1D simulation, Layer thickness optimization, MAPbI3Abstract
The work assesses the effect of variable thickness on the output of planar MAPbI3 perovskite solar cells (PSCs), studied using SCAPS-1D simulation. A planar heterojunction structure constituting Au/SnS/MAPbI₃/TiO₂/ZnO:Al has been proposed, and the thicknesses of the hole transport layer (HTL), absorber layer, and electron transport layer (ETL) were changed systematically to optimize the efficiency of the device. The thicknesses of HTL (SnS), perovskite absorber, and ETL (TiO2) were adjusted between 0.1 and 1 µm. The simulations were carried out at standard AM1.5G sunlight, and several photovoltaic parameters, such as open-circuit voltage (Voc), short-circuit current density (Jsc), Fill Factor (FF), and Power Conversion Efficiency (PCE), were studied. The optimization of the thickness of HTL (=0.3 µm), perovskite layer (=0.4 µm) and ETL (=0.2 µm) resulted in Voc of 1.036 V, Jsc of 32.01 mA/cm2, FF of 70.89% and overall efficiency of 23.50%. These findings illustrate that the layer engineering has a considerable impact on charge transportation, recombination behaviour, and overall device performance. The study highlights the potential of simulation-driven structural optimization to enhance the efficiency of planar MAPbI3 PSCs.
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