Numerical Modeling and Data-Driven Optimization of Rb 2 SnBr 6 -Based Perovskite Solar Cells Using SCAPS-1D
Year: 2026
Type: conference-paper
Abstract: This work investigated the photovoltaic potential of Rb2SnBr6-based perovskite solar cells through systematic SCAPS-1D simulation and device-level optimization. A comparative screening of transport layers showed that ZnO functioned as the most effective electron-transport layer, whereas Zn3P2provided the most favorable hole-extraction characteristics among the examined HTLs. Accordingly, the optimized Al/FTO/ZnO/Rb2SnBr6/Zn3P2/Ni architecture delivered a maximum power conversion efficiency of 31.78%, together with a Voc of 0.95 V, Jsc of 38.16 mA/cm2, and a fill factor of 87.62%. The analysis further showed that device output was strongly governed by absorber thickness, acceptor density, defect concentration, operating temperature, and back-contact work function. Efficiency increased with absorber thickness up to 1.0 μm and improved under moderate doping, whereas excessive defect density and elevated temperature deteriorated performance through enhanced recombination losses. The optimized interfacial band alignment and reduced back-contact barrier collectively promoted efficient carrier extraction. These findings established Rb2SnBr6as a promising low-toxicity absorber for high-performance, lead-free perovskite photovoltaics.
Institution: Pabna University of Science and Technology
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7204453035