Fig. 21From: White light emitting diode based on purely organic fluorescent to modern thermally activated delayed fluorescence (TADF) and perovskite materials(Reproduced with permission from Ref. [52] Copyright © 2018, American Chemical Society)a Molecular structures of the emitters and strategical relationships. b PEluminance-EQE curves. c J–V and luminescence curves and normalized EL spectra of d PTZ-TTR (inset: CIE variations from 100 to 1000 cd/m2) and e PTZ-Ph-TTR (inset: CIE variations at different voltage)Back to article page