Flexible Solar Cells: Self‐Doping Fullerene Electrolyte‐Based Electron Transport Layer for All‐Room‐Temperature‐Processed High‐Performance Flexible Polymer Solar Cells (Adv. Funct. Mater. 13/2018)

In article number 1705847, Yaowen Li and co-workers report a self-doping fullerene electrolyte-based interface layer, which possesses a thermal annealing-free process and thickness-insensitive photovoltaic properties. The image shows the evolution of solar cells from rigid to flexible cells just like a book developing process from bamboo slips to paper, where the fullerene electrolyte plays an important role in fabricating high-performance solar cells.