Incorporation of Functionalized Graphene and Analogous 2D Materials toward Efficiency Enhancement of Polymer Solar Cells

The interfaces between electrodes/photoactivelayer play a determinative role on the performanceof polymer solar cells(PSCs),improving the con-tact between electrodes and photoactive layer via in-terface engineering has been demonstrated to an ef-fective solution to enhance the performance of PSCs.Graphenes have been generally applied as hole ex-traction layer in PSCs to replace the commonly

The interfaces between electrodes/photoactive layer play a determinative role on the performance of polymer solar cells （PSCs） , improving the contact between electrodes and photoactive layer via interface engineering has been demonstrated to an effective solution to enhance the performance of PSCs. Graphenes have been generally applied as hole extraction layer in PSCs to replace the com- monly used poly （3, 4-ethylendedioxythio- phene） ：poly （styrenesulfonate） （PEDOT：PSS） which is acidic and might damage the ITO electrode owing to its hygroscopicity. We applied a new func- tionalized graphene.