Fig. 26From: White light emitting diode based on purely organic fluorescent to modern thermally activated delayed fluorescence (TADF) and perovskite materials(Reproduced with permission from Ref. [70] Copyright 2016, ©WILEY–VCH Verlag GmbH & Co. KGaA, Weinheim)a PL spectra, b color triangle and the CIE color coordinates of the WLED device, c power efficiency vs. current density spectrum of the WLED. d PL spectra of the WLED measured at different timeBack to article page