IOP science, a scientific journal, has published a study on wide bandgap perovskite solar cells fabricated with scalable deposition techniques. The research compared devices using a 1.68 eV absorber against 1.61 eV reference cells, both tested under standardized ISOS stress protocols. Results showed that combined light and heat exposure at 60 °C (ISOS-L2) caused rapid deterioration, with efficiency reduced to 80% after 35 hours due to absorber phase segregation and reduced dielectric properties. Under dark storage at 85 °C (ISOS-D2), efficiency also declined to 80% after 95 hours, mainly from interface degradation at the perovskite and electron transport layer, while absorber stability was maintained. In contrast, light exposure at 25 °C (ISOS-L1) caused minimal degradation over 60 hours. The study concluded that distinct degradation pathways were observed, underscoring the importance of nanoscale analysis, outdoor validation, and standardized benchmarks for commercial advancement of scalable perovskite devices.