Fig. 3From: 5-nm LiF as an Efficient Cathode Buffer Layer in Polymer Solar Cells Through Simply Introducing a C60 Interlayer J-V characteristics, recorded under 100 mW/cm2 illumination (AM 1.5 G), of the PSCs using a LiF single and b C60 (25 nm)/LiF double CBLs with different thicknesses of LiFBack to article page