唐建新教授及其合作者在Nat. Commun.上发表论文

作者：

Guo Yuan^1#, Yan-Chun Wang^1#, Zhen Zhang²*, Jun-Yu Liu¹, Yi-Hui He², Guo-Wei Chen³, Yan-Qing Li²* & Jian-Xin Tang^1,3*

单位：

¹Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, China.

²School of Physics and Electronic Science, East China Normal University, Shanghai, China.

³Macao Institute of Materials Science and Engineering (MIMSE), Faculty of Innovation Engineering (FIE), Macau University of Science and Technology, Taipa, China.

摘要：

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 achieve the narrowband blue emission with a CIEy value lower than 0.15, a maximum external quantum efficiency of 41.2%, and the suppressed efficiency roll-off at high luminance due to efficient energy transfer to blue guest emitters and elevated horizontal dipole orientation. This work strategically demonstrates a balance between high efficiency and reduced efficiency roll-off in binary narrowband blue OLEDs, representing a substantial advancement in blue electroluminescent technology.

影响因子：

15.7

分区情况：

一区

链接：

https://doi.org/10.1038/s41467-025-65446-z