Manipulating the D:A interfacial energetics and intermolecular packing for 19.2% efficiency organic photovoltaics

Manipulating the D:A interfacial energetics and intermolecular packing for 19.2% efficiency organic photovoltaics A novel electron acceptor, BTP-H2, demonstrates a high efficiency of 18.5% with a high V oc of 0.932 V. It also enables the ternary device to yield an efficiency of 19.2%, ranking the highest among single-junction organic photovoltaics.