Fig. 6: The recycling of the RCPI from the FOSCs.

a The recycling procedures from the original FOSCs to the recycled FOSCs. I: the original FOSCs; II: the FOSCs in CB before and after sonicated for 3 h; III: immersing the AgNWs@RCPI electrodes in a mixture of pivalic acid and DMAc; IV: the obtained transparent and homogeneous solution after removal of AgNWs and ZnO by centrifugation; V: the recycled RCPI films and AgNWs@RCPI electrodes; VI: the FOSCs based on the recycled AgNWs@RCPI electrodes. b The J-V characteristics of the original FOSCs and FOSCs based on the recycled AgNWs@RCPI electrodes.