School of Mechatronic Engineering and Automation, Shanghai University, Shanghai, 200444, China.
Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, 100872, China.
Top Curr Chem (Cham). 2023 Aug 26;381(5):26. doi: 10.1007/s41061-023-00436-7.
Narrow-band deep-blue organic light-emitting diodes (OLEDs) have played a key role in the field of high-quality full-color displays. However, because of the considerable challenges of inherent band gaps, unbalanced carrier injection and the lack of molecular structures, narrow-band deep-blue emitters develop slowly compared with red- and green-emitting materials. Encouragingly, with the continuous efforts of scientists in recent years, great progress has been made in the molecule design and material synthesis of highly efficient narrow-band deep-blue emitters. The typical deep-blue emitters which exhibit narrow emission with a full width at half maximum of < 50 nm are summarized in this article. They are divided into the three categories: fluorescence, phosphorescence and thermally activated delayed fluorescence. The methods of molecular design for realizing narrow-band deep-blue emission are described in detail and future research directions are also discussed in this article.
窄带深蓝光有机发光二极管（OLED）在高质量全彩显示领域发挥了关键作用。然而，由于固有带隙、载流子注入不平衡以及缺乏分子结构等方面的巨大挑战，与红、绿光发射材料相比，窄带深蓝光发射器的发展较为缓慢。令人鼓舞的是，近年来科学家们不断努力，在高效窄带深蓝光发射器的分子设计和材料合成方面取得了重大进展。本文总结了典型的窄带深蓝光发射器，它们的发射光谱半峰全宽<50nm，分为荧光、磷光和热激活延迟荧光三种类型。详细描述了实现窄带深蓝光发射的分子设计方法，并讨论了未来的研究方向。
