摘要
Since 1995,bulk-heterojunction organic solar cells consisting of one or two organic donors and one or two organic acceptors have been fighting for high power conversion efficiencies(PCEs)and good stability[1].Until recent years,this next-generation photovoltaic technology starts to offer decent PCEs,shedding the light on commercialization,and attracting great attention again[2-14].Compared w让h the continuously emerging highperformance nonfullerene acceptors,high-performance donors are rare.
基金
the National Key Research and Development Program of China(2017YFA0206600)
the National Natural Science Foundation of China(51773045,21572041,21772030 and 51922032)
the Youth Association for Promoting Innovation(CAS)for financial support
