Optimizing Carbon-Based Perovskite Solar Cells with Pyramidal Core –Shell Nanoparticles for High Efficiency

AbstractCarbon-based perovskite solar cells (C-PSCs) have gained attention due to their cost-saving, achieved by eliminating expenses associated with organic materials, hole transport layers (HTL), and metallic contacts. Furthermore, they exhibit improved stability compared to counterparts utilizing HTL/metallic contact interfaces. However, the power conversion efficiency (PCE) of free HTL C-PSCs falls notably lower than their HTL/metallic contact counterparts. In the initial phase of this study, we introduce pyramid-shaped plasmonic nanoparticles (NPs) and utilize them in the photoactive region to enhance the PCE of free HTL C-PSCs. A thorough investigation, employing three-dimensional finite difference time domain (FDTD) methods, explores the optical losses of the NPs and examines the impact of silver oxidation on sunlight absorption. Subsequently, we propose a core –shell pyramid configuration to mitigate optical losses and enhance stability. Besides, we examine the increase in carbon’s work function (WF) and its influence on boosting the open-circuit voltage. The PCE of the solar cell exhibits a noteworthy 132.6% improvement compared to its initial state. This research, by simultaneously utilizing core–shell pyramid-shaped NPs and enhancing carbon WF, brings them closer to theoretical Shockley-Queisser limit. It introduces a novel approach to advancing the PCE of high-performance free HTL C-PSCs, thereby bridging the gap toward commercialization.
Source: Plasmonics - Category: Biomedical Science Source Type: research