Blue-emitting bis-tridentate Ir(<scp>iii</scp>) phosphors: OLED performances <i>vs.</i> substituent effects

Abstract

Dependence of external quantum efficiency (EQE) and radiative decay lifetime of blue-emitting OLED is established with photostable, bis-tridentate Ir(<sc>iii</sc>) emitters, giving max. EQE and luminescence of 12.2% and 18 980 cd m⁻², and with CIE_x,y coordinates between (0.16, 0.22) and (0.17, 0.27).