Exploring Efficiency Optimization in Lead-Free Cs2TiBr6 Perovskite PV Cells through SCAPS-1D Simulation

The methylammonium lead halide PV has garnered significant attention owing to its lightweight characteristics, cost-efficiency, and readily replicable fabrication techniques. Despite the advantages mentioned, the commercialization of these cells remains unlikely due to concerns around the toxicity linked to lead. Cesium-titanium (IV) bromide (Cs2TiBr6) emerges as a viable substitute for lead-based perovskites. However, the lack of suitable hole and electron transport layers poses a hindrance to achieving higher Power Conversion Efficiency (PCE) in CS
2
TiBr
6
. The primary objective of this research is to optimize the performance of Cs2TiBr
6
solar cells by examining and analysing the ideal thickness parameter. In this investigation, we employed the SCAPS-1D program to do simulations, facilitating an examination of many parameters like energy bandgap, electron affinity, doping density, and thickness. The findings of our research demonstrate that by the deliberate adjustment of the absorber layer using meticulously chosen parameters, it is feasible to attain a substantial PCE of up to 23.02%. Regrettably, certain occurrences also exhibited a decline in power conversion efficiency. Nevertheless, this research study makes a noteworthy contribution towards enhancing the efficiency of PV cell.