Njema , George G.Abderrahmane ElmeloukyChinedu C. AhiaEdson L. MeyerJoshua K. Kibe2026-04-142026-04-142026http://41.89.96.81:4000/handle/123456789/3672enModelingImpedance SpectroscopyModeling and Impedance Spectroscopy Analysis of a High-Efficiency Graphene-Based Heterostructure Solar Cell Exceeding 22% Power Conversion EfficiencyArticle