The Study Of PSCs With Prefabricated PEDOT:PSS Conductive Film As Anode

PEDOT:PSS is a kind of conductive polymer. As its work-function is higher than ITO, it can be used as anode interfacial layer in PSCs. In this article, a prefabricated conductive polymer film of PEDOT:PSS is developed with highly conductive PEDOT:PSS solution. It can be used as anode in PSCs, and the process is extremely simple. The thickness and sheet resistance of the conductive film is5micron and10Ω/sq.At the beginning of the study, PSCs with the structure of ITO/interfacial layer/P3HT:PCBM/MoO3/Al were fabricated. Cathode modification materials such as Cs2CO3、PFN and LiF were invested in this kind of PSCs and obtained the proper processing condition of these materials.Then PSCs with the structure of ITO/interfacial layer/P3HT:PCBM/PEDOT:PSS (prefabricated) were made and invested. The study shown that the cathode interface layer PFN、ZnO and LiF can increase the Voc of the devices, and the power conversion efficiency(PCE) reached1.17%、1.25%and1.94%.CS2CO3device’s Isc is weak due to its strong absorption capacity of water. Li2CO3、Na2CO3、K2CO3also can enhance the performance of PSCs with this structure, and the highest PCE reached2.1%.