Fig. 6: Performance of top-emitting OLEDs with EILs of Yb (1 nm) and m-dPhen (1 nm).
a Current density-voltage luminance (\(J\)−\(V\)−\(L\)) of the OLEDs using Yb and m-dPhen as EILs for comparison. b The CCE−luminance curves of the OLEDs using different EILs. c The lifetimes measured at an initial luminance of 5000 cd m−2.
