Organic solar cells with a highly ordered hybrid active layer featuring vertical phase separation exhibit significantly enhanced photovoltaic properties and stability. In this hybrid active layer, polymer donors (PTB7) and acceptors (PC71BM) are arranged on the upper side of the layer due to the accumulation of CPEs (PFT-D). This vertical phase-separated molecular order greatly improves the solar cells’ efficiency and durability. For more details, see the article number 1801396 by Yong Woon Han, Doo Kyung Moon, and their team.-Scientific Journal cover design by scapiens

https://onlinelibrary.wiley.com/doi/abs/10.1002/admi.201970018