NIR TADF emitters and OLEDs: challenges, progress, and perspectives.
Yuxin XiaoHailan WangZongliang XieMingyao ShenRongjuan HuangYuchen MiaoGuanyu LiuTao YuWei HuangPublished in: Chemical science (2022)
Near-infrared (NIR) light-emitting materials show excellent potential applications in the fields of military technology, bioimaging, optical communication, organic light-emitting diodes (OLEDs), etc. Recently, thermally activated delayed fluorescence (TADF) emitters have made historic developments in the field of OLEDs. These metal-free materials are more attractive because of efficient reverse intersystem crossing processes which result in promising high efficiencies in OLEDs. However, the development of NIR TADF emitters has progressed at a relatively slower pace which could be ascribed to the difficult promotion of external quantum efficiencies. Thus, increasing attention has been paid to NIR TADF emitters. In this review, the recent progress of NIR TADF emitters has been summarized along with their molecular design strategies and photophysical properties, as well as electroluminescence performance data of their OLEDs, respectively.
Keyphrases
- light emitting
- fluorescent probe
- photodynamic therapy
- drug release
- fluorescence imaging
- living cells
- single molecule
- drug delivery
- working memory
- high resolution
- energy transfer
- molecular dynamics
- quantum dots
- big data
- deep learning
- human health
- mass spectrometry
- artificial intelligence
- high speed
- climate change
- posttraumatic stress disorder