Fig. 25From: White light emitting diode based on purely organic fluorescent to modern thermally activated delayed fluorescence (TADF) and perovskite materials(Reproduced with permission from Ref. [69] Copyright 2017, ©WILEY–VCH Verlag GmbH & Co. KGaA, Weinheim)a White perovskite LED energy diagram, b EL spectra of MEH: PPV/perovskite active layer for different weight ratio, c the variation of the CIE color coordinates upon varying the weight ratio [inset: image of a working white PeLED], d the current density–luminance–voltage curve of white PeLEDsBack to article page