Xiao et al. report the synthesis of a fullerene derivative bearing four piperazidine groups to engineer the tin halide perovskite/C60 interface, enabling the photovoltaic devices with a power conversion efficiency of 22.49% and an output power density of 64.1 μW cm-2 under 1,000 lux white light illuminance.
- Hongbin Xiao
- Enhao Cui
- Xiangyue Meng
