George G. NjemaAbderrahmane ElmeloukyChinedu C. AhiaEdson L. MeyerJoshua K. Kibet2026-03-182026-03-182026https://onlinelibrary.wiley.com/doi/full/10.1002/pssa.202500652http://41.89.96.81:4000/handle/123456789/3643enModeling and Impedance Spectroscopy Analysis of a High-Efficiency Graphene-Based Heterostructure Solar Cell Exceeding 22% Power Conversion EfficiencyArticle