Efficient, Air‐Stable Bulk Heterojunction Polymer Solar Cells Using MoO x as the Anode Interfacial Layer

The use of molybdenum oxide as the anode interfacial layer in conventional bulk heterojunction polymer solar cells leads to an improved power conversion efficiency and also dramatically increases the device stability. This indicates that the engineering of improved anode interface materials is an important method by which to fabricate efficient and stable polymer solar cells. The development of bulk heterojunction (BHJ) polymer solar cells continues to show progress.1-6 Power conversion efficiencies (PCE) in the range of 6–8% have been recently reported.7-12 However, for large-scale commercialization, further improvements in PCE and stability are needed. A BHJ polymer solar cell generally consists of a…