Organic Solar Cells: Facile Synthesis of Polycyclic Aromatic Hydrocarbon (PAH)–Based Acceptors with Fine‐Tuned Optoelectronic Properties: Toward Efficient Additive‐Free Nonfullerene Organic Solar Cells (Adv. Energy Mater. 24/2019)

In article number 1803976, Han Young Woo, Xugang Guo, and co-workers incorporate a series of polycyclic aromatic hydrocarbons with distinct π-conjugated cores, from naphthalene, anthracene, pyrene, to perylene into nonfullerene acceptors via simple and low-cost synthetic routes. The optoelectronic properties of these acceptors can be tuned over a wide range, enabling a promising power conversion efficiency of 10.37% in additive-free organic solar cells.