Читать книгу Handbook of Aggregation-Induced Emission, Volume 3 - Группа авторов - Страница 20

Although AIE‐active conventional fluorescence have took up the majority of all AIE emitters, the maximum EQE values of their OLEDs are too low, with only 5% in theory, due to their capabilities of using only singlet excitons, with the loss of 75% triplet excitons. To further improve the efficiency of OLED devices, the AIE emitters were designed with other photophysical mechanisms, which can take advantage of triplet excitons for emission in both highly efficient and cost‐effective OLEDs. At present, the AIE properties have been combined with various photophysical strategies of high EUE such as phosphorescence [20], TADF [92], and HLCT [28–31] to prepare highly efficient emitters for OLED devices. Despite different photophysical mechanisms, all of them have the potentials to realize 100% EQE in theory. In the following paragraph, we will introduce each of these emitters combined with AIE and high EUE mechanisms in details.