Publication date: 17th February 2025
Abstract:
Perovskite solar cells (PSCs) have emerged as a transformative technology in renewable energy, achieving power conversion efficiencies (PCEs) comparable to commercial solar technologies. However, their limited long-term stability poses a significant challenge to commercialization. Low-dimensional perovskites have demonstrated enhanced photostability; however, their wide bandgap poses challenges for maximizing output power, necessitating advanced strategies in device and interfacial engineering. In this study, we explore the potential of 2D perovskites by leveraging SCAPS-1D (Solar Cells Capacitance Simulator) to investigate the device architecture: FTO/TiO2/BA2MAn-1PbnI3n+1/MoOx/HTLs/Metals. Simulation results reveal that incorporating a thin molybdenum oxide (MoOx) layer at the 2D perovskite/HTL interface significantly enhances device performance. Key device parameters, including absorber layer thickness, defect density, operating temperature, and interfacial defect layer properties, and work function were meticulously studied to optimize performance. Under the optimized condition, device achieved a PCE of 22.69%, with JSC = 22.20 mA/cm², VOC = 1.20 V, and FF = 85.11%. Current research also efforts focus on device engineering and optimizing guanidinium (GA)-based 2D perovskites within this architecture. This work lays the groundwork for ongoing fabrication efforts and offers a robust framework for the development of next-generation perovskite photovoltaics.
Keywords: Perovskite solar cells, 2D perovskites, SCAPS-1D simulation, molybdenum oxide interface, device optimization.
We acknowledge financial support under the National Recovery and
Resilience Plan (NRRP), Mission 4, Component 2, Investment 1.1, Call
for tender No. 104 published on 2.2.2022 by the Italian Ministry of
University and Research (MUR), funded by the European Union –
NextGenerationEU– Project Title ELDORADO – CUP - 2022K9PFSJ Grant
Assignment Decree No. 957 adopted on 30/06/2023 by the Italian
Ministry of Ministry of University and Research (MUR).
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