Bulk Contact Between Silver Nanowires Top Electrode and Interface Layer Enables High Performance of Full‐Solution‐Processed Semitransparent Organic Solar Cell Module

The solution‐processed electrode is key to the full‐solution‐processed organic solar cells (OSCs). Silver nanowires (AgNWs) are considered as an attractive due their low sheet resistance and high transmittance. However, traditional “line‐plane” contact between AgNWs interface buffer layer insufficient, resulting in performance of OSCs. Herein, a bulk structure reported interface, formed by inserting material, such HMoO x (hydrogen molybdenum bronze) into networks. extra can be connected with bottom layer, forming longitudinal network, wrapping interfacial layer. This electrode‐interface increases area AgNWs/interface layers, promoting charge transfer collection. Besides, top‐injected method enable formation water‐based ink film on top well avoid solvent erosion Based structure, this work realized 12.27% 9.54% for 0.09 cm 2 small‐area device 10.8 semitransparent mini‐module. These results provide new idea OSCs preparation.