Elucidating the Key Role of Phosphorescent Sensitizers in High‐Performance, Long‐Lifetime Hyperphosphorescent Organic Light‐Emitting Devices Based on a Multi‐Resonance Thermally Activated Delayed Fluorescence Emitter
Hyperphosphorescent organic light‐emitting devices that employ phosphorescent sensitizers are essential for achieving low‐power consumption, long‐lifetime, and high‐resolution displays, yet the roles of sensitizers in device stability remain unclear. In this study, we investigated phosphor‐assisted thermally activate...