Effect of Bulk Engineering on Energy Level Pinning and Ionic Driven Degradation Pathways for 1.72 eV Wide Bandgap Perovskite
Wide-bandgap perovskites (1.6-1.8 eV) are promising top sub-cells for tandem and indoor photovoltaics, but high bromine content induces halide segregation and accelerated degradation. In this work, we systematically investigate three bulk modifiers: Ti3C2Tx (2D flakes), Methylammonium chloride (crystallization additi...