Highly Efficient Near‐Infrared Delayed Fluorescence Organic Light Emitting Diodes Using a Phenanthrene‐Based Charge‐Transfer Compound
Jilin University · State Key Laboratory of Supramolecular Structure and Materials
Abstract
Significant efforts have been made to develop high-efficiency organic light-emitting diodes (OLEDs) employing thermally activated delayed fluorescence (TADF) emitters with blue, green, yellow, and orange-red colors. However, efficient TADF materials with colors ranging from red, to deep-red, to near-infrared (NIR) have been rarely reported owing to the difficulty in molecular design. Herein, we report the first NIR TADF molecule TPA-DCPP (TPA=triphenylamine; DCPP=2,3-dicyanopyrazino phenanthrene) which has a small singlet-triplet splitting (ΔEST ) of 0.13 eV. Its nondoped OLED device exhibits a maximum external quantum efficiency (EQE) of 2.1 % with a Commission International de L'Éclairage (CIE) coordinate of…
Citation impact
- FWCI
- 34.53
- Percentile
- 100%
- References
- 64
Authors
6- SWShipan Wang
Jilin University, State Key Laboratory of Supramolecular Structure and Materials
- XYXianju Yan
Jilin University, State Key Laboratory of Supramolecular Structure and Materials
- ZCZong Cheng
Jilin University, State Key Laboratory of Supramolecular Structure and Materials
- HZHongyu Zhang
Jilin University, State Key Laboratory of Supramolecular Structure and Materials
- YLYu Liu
Jilin University, State Key Laboratory of Supramolecular Structure and Materials
Topics & keywords
- Phenanthrene
- Fluorescence
- Charge (physics)
- OLED
- Optoelectronics
- Infrared
- Materials science
- Diode