Presentation Information
[10a-B12-7]Intermolecular Exciplex Having 100% PLQY and Application for OLEDs
〇Toshiharu Ide1,2, Youhei Chitose2,3, Chihaya Adachi2 (1.GSE, Kyushu Univ., 2.OPERA, Kyushu Univ., 3.CMS, Kyushu Univ.)
Keywords:
TADF,Exciplex,OLED
In this study, we developed novel acceptor molecules functionalized with electron-withdrawing CF3 groups and investigated the photophysical properties of their intermolecular exciplex formed with mCBP.
The vacuum-evaporated doped films exhibited distinct TADF-driven green emission. We demonstrated that the photoluminescence quantum yield (ΦPL) enhanced as the LUMO levels deepened due to the electron-withdrawing nature of the CF3 units. Remarkably, the optimized doped film achieved an exceptionally high ΦPL of approximately 100%, overcoming the efficiency limitations of conventional exciplex systems.
Given their deep HOMO/LUMO levels, these newly synthesized acceptors are expected to function as efficient electron-transporting and hole-blocking materials and improve carrier balance in devices. On the day of the presentation, we will discuss the photophysical insights and highlight the utility of these novel acceptors for OLED applications.
The vacuum-evaporated doped films exhibited distinct TADF-driven green emission. We demonstrated that the photoluminescence quantum yield (ΦPL) enhanced as the LUMO levels deepened due to the electron-withdrawing nature of the CF3 units. Remarkably, the optimized doped film achieved an exceptionally high ΦPL of approximately 100%, overcoming the efficiency limitations of conventional exciplex systems.
Given their deep HOMO/LUMO levels, these newly synthesized acceptors are expected to function as efficient electron-transporting and hole-blocking materials and improve carrier balance in devices. On the day of the presentation, we will discuss the photophysical insights and highlight the utility of these novel acceptors for OLED applications.