Modulation of hybrid organic-perovskite photovoltaic performance by controlling the excited dynamics of fullerenes

We present a synergistic approach to modulate organic-perovskite interfaces and their photovoltaic behaviors by tuning the properties of n-contact fullerenes layered atop of perovskite. Fullerenes with excited charge transfer are found to not only suppress fullerene photoluminescence, but also enhance molecular polarization and transport capabilities. This results in optimized perovskite-fullerene contact.