Tunable Organophosphorus Dopants for Bright White Organic Light‐Emitting Diodes with Simple Structures

Efficient white‐light‐emitting LEDs have been constructed by varying the substitution pattern of phosphole derivatives and chemical modification of their P atoms, producing thermally stable derivatives that are used as suitable dopants in a blue‐light‐emitting host. The devices exhibit high brightness and, due to their simple structures, current‐independent CIE coordinates.