Efficient, narrow-band, and stable electroluminescence from organoboron-nitrogen-carbonyl emitter.

ABSTRACT: Organic light-emitting diodes (OLEDs) exploiting simple binary emissive layers (EMLs) blending only emitters and hosts have natural advantages in low-cost commercialization. However, previously reported OLEDs based on binary EMLs hardly simultaneously achieved desired comprehensive performances, e.g., high efficiency, low efficiency roll-off, narrow emission bands, and high operation stability. Here, we report a molecular-design strategy. Such a strategy leads to a fast reverse intersystem crossing rate in our designed emitter h-BNCO-1 of 1.79×10⁵ s^-1. An OLED exploiting a binary EML with h-BNCO-1 achieves ultrapure emission, a maximum external quantum efficiency of over 40% and a mild roll-off of 14% at 1000 cd·m^-2. Moreover, h-BNCO-1 also exhibits promisi

SUBMITTER: Cheng YC 

PROVIDER: S-EPMC10810797 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature