Structural Optimization of Lead Free Double Perovskite Solar Cells for Enhanced Photocurrent Efficiency

Abstract

The increasing global demand for clean and efficient energy solutions has newlineled to significant advancements in solar cell technologies. Perovskite solar cells newline(PSCs) have garnered interest due to their high-power conversion efficiency (PCE) newlineand lower manufacturing costs. The incorporation of hazardous lead in conventional newlineperovskite solar cells poses a significant environmental and health risk. This thesis newlineexamines the structural optimization and performance enhancement of lead-free newlinedouble perovskite solar cells, with a focus on improving photocurrent efficiency and newlineoverall sustainability. The SCAPS modeling software was used to investigate the newlinesimulation results. newlineThis research investigates the potential for using a lead-free double- newlineperovskite material, Laand#8322;NiMnOand#8326;, as an absorbing layer in perovskite solar cells to newlineenhance power conversion efficiency (PCE). Given the urgent need for newlineenvironmentally friendly energy sources, the study addresses the problem of newlinedeveloping alternative materials to replace lead-based perovskite materials. newlineCompared to single-perovskite materials, double perovskites offer several newlineadvantages, including enhanced stability, higher efficiency, and a broader absorption newlinespectrum. In this research work, we have simulated and analyzed the double- newlineperovskite Laand#8322;NiMnOand#8326; as an absorbing material in various electron transport layers newline(ETLs) and hole transport layers (HTLs) to maximize the capacity for high-power newlineconversion efficiency (PCE). It has been observed that for a perovskite solar cell newlinewith a Laand#8322;NiMnOand#8326; absorbing layer, Cand#8326;and#8320; and Cuand#8322;O provide good ETLs and HTLs, newlinerespectively. Therefore, the achieved power conversion efficiency (PCE) is newlineimproved. newline