Research / 2019 / Article / Fig 6

Research Article

High-Performance and Hysteresis-Free Perovskite Solar Cells Based on Rare-Earth-Doped SnO2 Mesoporous Scaffold

Figure 6

(a) Normalized PCE change with time for m-TiO2 and 3%-SNOY devices without encapsulation under simulated solar light illumination for 400 h. (b) XRD patterns of m-TiO2 and 3%-SNOY perovskite films in ambient condition (RH ~30%) before and after simulated solar light illumination for 7 days.