Fig. 5: EL performances of non-sensitized OLEDs.

a Device architecture, energy diagram, and functional layers of the OLEDs. b EL spectra measured at 100 cd m–2. c Current density–voltage–luminance characteristics. d EQE–luminance curves.
a Device architecture, energy diagram, and functional layers of the OLEDs. b EL spectra measured at 100 cd m–2. c Current density–voltage–luminance characteristics. d EQE–luminance curves.