Progress in Materials, Solution Processes, and Long‐Term Stability for Large‐Area Organic Photovoltaics

Organic solar cells based on bulk heterojunctions (BHJs) are attractive energy‐conversion devices that can generate electricity from absorbed sunlight by dissociating excitons and collecting charge carriers. Recent breakthroughs attained by development of nonfullerene acceptors result in significant enhancement in power conversion efficiency (PCEs) exceeding 17%. However, most of researches have focused on pursuing high efficiency of small‐area...