Stable Pure-Green Hyperfluorescent Organic Light-Emitting Diodes A newly designed MR-TADF emitter, DBF-v-DABNA, enables pure-green hyperfluorescent OLEDs with ultrahigh efficiency, outstanding color purity, and long operational stability. Its rigid framework and steric shielding enable hyperfluorescent OLEDs with EQEs up to 35.6%, CIE y of 0.73–0.79, and device lifetimes exceeding 600 h at 5000 cd m−2. This work highlights an effective molecular design strategy for realizing highly efficient and color-pure green emission in next-generation UHD displays. More details can be found in the Research Article by Byoung Ki Choi, Yun-Hi Kim, and co-workers (DOI: 10.1002/adma.202518330).
Sim et al. (2026) studied this question.