 Abstract molecular doping is commonly used in organic semiconductors to adjust their optoelectronic properties. Despite its versatility, this technique has been limited to p-type dopants in organic photovoltaics, OPVs. To address this limitation, researchers have developed a new n-type doping method using Benzal-Vialogen, BV, a molecule with both n-type and microstructure modifying capabilities. This approach was tested in five different OPV systems, resulting in significant increases in power conversion efficiencies up to 17.1%. These results demonstrate the potential of this novel n-type doping strategy for improving the performance of OPVs. This article was authored by Yuanbao Lin, Yulia Ferdows, Muhammad Insan Nugraha, and others.