26‐4: High Performance Multiple‐Sensitizing Process Red Hyperfluorescence Device with Assistant Emission Layer (AEL)

In this work, through analysis of excition distribution mechanism, the multiple‐sensitizing process red hyperfluorescence top–emission device achieved unprecedent high current efficiency of 53.6 cd/A with CIE (0.666, 0.334), LT95 of 900 hrs and low voltage of 4.15 V at current density of 15mA/cm 2 among the reported Hyperfluorescence OLEDs.