Organic Donor–acceptor Heterojunction Solar Cells

Consequences of Anode Interfacial Layer Deletion. HCl-Treated ITO in P3HT:PCBM-Based Bulk-Heterojunction Organic Photovoltaic Devices

“…Organic photovoltaic (OPV) devices are of great interest due to their promise as low-cost alternatives to conventional inorganic photovoltaic devices, such as those based on Si, with the potential to be produced on a large scale by established high-throughput manufacturing methods, including roll-to-roll processing or screen printing. − While a significant research effort has focused on the active layer electron donor and acceptor materials, optimization of the device interfaces presents an equally important challenge which, most significantly, is generic to any OPV device architecture. − Interfacial phenomena that dictate device performance, such as Ohmic contacts, interfacial cohesion, and charge traps, are largely independent of the cell design but must specifically accommodate the particular donor and acceptor materials being employed. The broad applicability of interfacial tailoring for OPV function therefore merits detailed investigation.…”