Fig. 6From: White light emitting diode based on purely organic fluorescent to modern thermally activated delayed fluorescence (TADF) and perovskite materials(Reproduced with permission from [23] Copyright 2006, ©WILEY–VCH Verlag GmbH & Co. KGaA, Weinheim)a Schematic energy band diagram of the WPLED. b External efficiency and power efficiency for the PLEDs with different doping ratio as functions of current density and c normalized EL spectra of MEH-PVV: PFO (0.25 wt%) PLED at different applied voltages (3 to 7 V)Back to article page