Fig. 4: Demonstration of an innovative blue OLED.
From: Unravelling the electron injection/transport mechanism in organic light-emitting diodes
a Multilayer structure of the OLED, chemical structure of the materials used in the EML. b, c Luminance–voltage and current density–voltage characteristics of blue fluorescent OLEDs with different EILs. d EQE traces of devices with different EILs. e EL spectrum of a blue OLED with Py-hpp2. The inset is a photograph of the blue OLED. f Lifetime extrapolation for the blue OLED with Py-hpp2. Data points are obtained at different initial luminance values.
