The weak donor-strong acceptor polymer acceptors for all-polymer solar cells (all-PSCs) have gained much less attention compared with the typical donor-strong acceptor counterparts. Direct (hetero)arylation polymerization reaction is a rising synthetic method, although most of the naphthalene diimide polymer photovoltaic acceptors have been prepared by classic Stille polymerization. A weak donor-strong acceptor polymer acceptor PNB2F has been successfully designed and synthesized by the two-step direct (hetero)arylation reaction and further applied in all-PSCs. The all-PSC device based on PNB2F and electron-donating polymer PBDB-T gained a PCE of 4.49%. The results demonstrate that direct (hetero)arylation reaction is a promising tool for building efficient polymer acceptors with convenient and low-cost synthesis ideas.

与典型的供体-强受体对应物相比，用于全聚合物太阳能电池（全-PSC）的弱的供体-强受体聚合物受体受到的关注要少得多。直接（杂）芳基化聚合反应是一种新兴的合成方法，尽管大多数萘二酰亚胺聚合物光伏受体是通过经典的Stille聚合反应制备的。通过两步直接（杂）芳基化反应成功设计和合成了弱供体-强受体聚合物受体PNB2F，并进一步应用于全PSC。基于PNB2F的全PSC设备给电子聚合物PBDB-T的PCE为4.49％。结果表明，直接（杂）芳基化反应是一种有希望的工具，可通过方便且低成本的合成方法构建有效的聚合物受体。