Fig. 11: The EL profiles of PQ2Ir(dpm) based devices.

a Current density–Voltage (J–V) characteristics of the electron-only devices. Inset: Comparison diagram of the relative recombination zones. b Normalized PL spectra of Tb-11 film, 26DCzPPy film, 4 wt% PQ2Ir(dpm) doped 26DCzPPy film, 0.4 wt% Tb-11 co-doped 26DCzPPy film, as well as 0.2 wt% Gd-1 co-doped 26DCzPPy film. Insert: Schematic representation of energy transfer processes. Reprinted from [88], with the permission of Royal Society of Chemistry