Cross-sectional SEM image; J-V curves with 100 millisecond scan delay times from Enhancing the efficiency of planar heterojunction perovskite solar cells via interfacial engineering with 3-aminopropyl trimethoxy silane hydrolysate

Fig. S1 Cross-sectional SEM image of the fabricated cell by inserting PCBM as modified layer.; Fig. S2 J-V curves with 100 millisecond scan delay times of the best perovskite solar cells fabricated with (a) bare TiO2, (b) PCBM-treated TiO2 and (c) APMS-hydrolysate-treated TiO2, measured under forward and reverse scan. Comparison of the curves under (d) forward scan and (e) reverse scan.