Figure 2: Perovskite solar cell performance.

(a) Light (blue line and symbols) and dark (grey line and symbols) IV curves of our champion device under irradiation from a solar simulator and adjusted to AM 1.5 G illumination (100 mW cm−2, active area: 12 mm2, 0.05 V step and 50 ms dwell time, measured from reverse to forward bias). (b) EQE (blue line and symbols) and integrated Jsc (grey line and symbols) of the same device.