Printable MoOx Anode Interlayers for Organic Solar Cells

• DOI: 10.1002/adma.201801718
• Publication Date: 2018-07-16T06:35:16Z
• Authors: Qian Kang; Bei Yang; Ye Xu; Bowei Xu; Jianhui Hou
• Keywords: Spin Coating

Abstract Currently, solution‐processed MoO x anode interfacial layers (AILs) can only be fabricated by the spin‐coating method in organic solar cells (OSCs), which severely limits their use practical productions where large‐area printing techniques are used. Herein, a facile is demonstrated to prepare highly conductive (denoted EG:Mo) that processed methods such as wire‐bar and blade coatings. The EG:Mo films prepared depositing an aqueous solution containing ammonium heptamolybdate (VI) tetrahydrate (NMo) ethylene glycol (EG) annealing at 200 °C. UV–vis absorption X‐ray photoelectron spectroscopy measurements confirm Mo reduced (V) EG, resulting n‐doped EG:Mo. Using AILs, OSC based on PB3T:IT‐M active layer exhibits power conversion efficiency (PCE) of 12.1%, comparable PEDOT:PSS modified devices. More importantly, AILs blade‐coating methods, corresponding devices show PCEs 11.9% 11.5%, respectively. Furthermore, AIL coating fabricate large area device (1.0 cm 2 ), PCE 10.1% achieved.