Fig. 5: Device characteristics.

a Current density (J) – voltage (V) graph, b Luminescence (L) -voltage (V), c EQE – current density (J) graph fitted by roll-off model. d Electroluminescence spectra (at 10 mA/cm²) of PtON-TBBI, PtON-tb-DTB, and PtON-tb-TTB.