Highly efficient solution-processed white organic light-emitting diodes based on a co-host system by controlling energy transfer among different emitters

Efficient solution-processed white organic light-emitting diodes with FIrpic, Ir(mppy) 3 and (MDQ) 2 Ir(acac) as the blue, green and red emitters, respectively, were realized by employing TcTa and CzSi as hosts.