Efficient organic light-emitting diodes based on iridium(<scp>iii</scp>) complexes containing indolo[3,2,1-<i>jk</i>]carbazole derivatives with narrow emission bandwidths and low efficiency roll-offs

Abstract

OLEDs based on iridium(<sc>iii</sc>) complexes containing an indolo[3,2,1-<italic>jk</italic>]carbazole unit exhibit good emission performances with a narrow full width at half maximum of 33 nm, good efficiency and low efficiency roll-off.