Fig. 1From: 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 with and without different thicknesses of C60 inserted between P3HT:PCBM and 5-nm-thick LiF layerBack to article page