Complementarity fusion of boron-oxygen and carbazole blocks enables narrowband blue OLEDs with high performance.

ABSTRACT: The development of ultra-high-definition organic light-emitting diodes (OLEDs) displays requires efficient and narrowband blue emission. Nevertheless, binary host-guest doped narrowband blue OLEDs still face significant challenges in simultaneously realizing high efficiency and negligible roll-off. Herein, a molecular construction strategy through the synergistic interplay between π-conjugation extension and functional complementarity fusion is proposed by incorporating a rigid boron-oxygen (BO) framework with carbazole building blocks. The constructed compounds exhibit increased triplet exciton recycling capability, high excited-state energy levels, and improved charge transporting features, showcasing significant potential as host matrices for blue devices. The sensitizer-free OLEDs achi

SUBMITTER: Yuan G 

PROVIDER: S-EPMC12647608 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature