Improved Organometal Halide Perovskite Solar Cell Performance via Morphological Control and Substrate Parameter Optimization

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Sunil Kumar, Dumendra Verma, Aloke Verma

Abstract

This research presents a comparative analysis of solar cells utilizing organometal halide perovskite, with titanium dioxide (TiO2) and zinc oxide (ZnO) employed as electron transport materials (ETMs). Utilizing SCAPS-1D simulations, the study investigates the influence of absorber and ETM thickness, interface trap density of states, and dopant concentration on photovoltaic solar cell performance. The findings reveal that increasing the thickness of the MAPbI3 perovskite layer up to 700 nm enhances power conversion efficiency (PCE), while thickness increments beyond 90 nm for TiO2 and ZnO layers diminish efficiency. The research underscores the importance of controlling the morphology of CH3NH3PbI3 perovskite solar cells (PSC) for achieving high efficiency and explores experimental and theoretical approaches to attain efficiencies of up to 29%. Additionally, the study examines the significance of optimizing thickness, reducing defect density, and incorporating a back contact with a higher work function, suggesting that replacing the TiO2 layer with a ZnO layer could enhance solar cell performance

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