Figure 5

J-V scans of the CH₃NH₃PbI₃ solar cell with NGONR HTM (a) different scanning directions, (b) different voltage sweep rates under 1 sun illumination (100 mW/cm²) demonstrating null current hysteresis, and (c) stability of encapsulated perovskite solar cell with PEDOT:PSS and NGONR HTMs over 100 hours under ambient conditions.