Sulfur-locked multiple resonance emitters for high performance orange-red/deep-red OLEDs
Jilin University · State Key Laboratory of Supramolecular Structure and Materials · +1 more institution
Abstract
Multiple resonance thermally activated delayed fluorescence (MR-TADF) materials are preferred for their high efficiency and high colour purity in organic light-emitting diodes (OLEDs). However, the design strategies of MR-TADF emitters in the red region are very limited. Herein, we propose a concept for a paradigm shift in orange-red/deep-red MR emitters by linking the outer phenyl groups in a classical MR framework through intramolecular sulfur (S) locks. Endowed with the planar architectural feature of the MR mother core, the proof-of-concept S-embedded emitters S-BN and 2S-BN also exhibit considerable flatness, which proves critical in avoiding the direct establishment of potent charge transfer states and…
Citation impact
- FWCI
- 32.82
- Percentile
- 100%
- References
- 83
Authors
6Topics & keywords
- Orange (colour)
- OLED
- Sulfur
- Optoelectronics
- Materials science
- Nanotechnology
- Physics
- Optics