Efficient electroluminescence of sky-blue iridium(III) complexes for organic light-emitting diodes

Efficient sky-blue OLEDs based on two iridium(III) complexes show a maximum luminance of 38 200 cd/m2, a maximum current efficiency of 58.74 cd/A, a maximum power efficiency of 49.85 lm/W and a maximum external quantum efficiency of 29.30%, respectively, with low efficiency roll-off.174