COMPUTATIONAL ANALYSIS OF THE EFFECT OF CARBON-BASED HOLE TRANSPORT LAYER (HTL) VARIATIONS ON THE PERFORMANCE OF FASNI3 PEROVSKITE SOLAR CELLS

• Main Author: Rizal Pahlevi, Muchammad
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/86993
• Institution: Institut Teknologi Bandung

Lead-free perovskites have emerged as a highly promising alternative for efficient and environmentally friendly photovoltaics due to their inherent optoelectronic properties. This study presents a numerical investigation into structured n–i–p inorganic perovskite photovoltaics using the Solar Cell Capacitance Simulator (SCAPS-1D). Various carbon materials including single-walled carbon nanotubes (SWCNT), graphene oxide (GO), and reduced graphene oxide (rGO) were employed as candidates for the hole transport layer (HTL) with FASnI3 serving as the active material and TiO2 as the electron transport layer (ETL). In addition, optimization was performed to obtain better material structures and energy band gap values. The optimized structure was used to analyze the overall performance of perovskite solar cells. This study investigates the impact of acceptor density on the performance of perovskite solar cells (PSCs) using various hole transport layers (HTL). The results indicate that increasing the acceptor density enhances the power conversion efficiency (PCE), rGO emerges as the most effective HTL, demonstrating a significant increase in PCE from 29.77% to 30.41%, alongside stable Voc growth from 1.22 V to 1.24 V. The superior charge transport characteristics of rGO, reflected in a higher fill factor that rises from 89.38% to 89.86%, highlight its effectiveness compared to GO. This study emphasizes the critical role of acceptor density in optimizing PSC performance and its significance for future research and the development of advanced HTL materials. Keywords: perovskite solar cells; SCAPS-1D simulation; hole transport layer; Graphene