Fig. 4From: 5-nm LiF as an Efficient Cathode Buffer Layer in Polymer Solar Cells Through Simply Introducing a C60 Interlayer J-V characteristics of the PSCs with the device structure of ITO/PEDOT:PSS/P3HT (x nm)/C60 (25 nm)/LiF (1 nm)/Al using varying thicknesses of P3HTBack to article page