Fig. 5From: Secondary-Transferring Graphene Electrode for Stable FOLEDa Schematic device structure of the FOLED. b Work function of SLG and HOMO/LUMO energy level of the FOLED components. Device characteristics of D1(based on SLG/HRA/PET), D2(based on SLG/ NOA63), and D3(based on PEDOT:PSS/SLG/NOA63). c J-V-L characteristics. d Current efficiency and power efficiency-voltage characteristics. e Photograph of the FOLED based on SLG/NOA63 (size 4 mm × 4.5 mm × 6)Back to article page