Solution-Processable Pure-Red Multiple Resonance-induced Thermally Activated Delayed Fluorescence Emitter for Organic Light-Emitting Diode with External Quantum Efficiency over 20 %
Xinliang Cai
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 P. R. China
Contribution: Data curation (lead), Formal analysis (equal), Supervision (equal), Validation (equal), Writing - original draft (lead), Writing - review & editing (equal)
Search for more papers by this authorDr. Yincai Xu
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 P. R. China
Contribution: Conceptualization (equal), Methodology (equal), Writing - original draft (equal)
Search for more papers by this authorYue Pan
Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Science, Jilin University, Changchun, 130012 P. R. China
Contribution: Formal analysis (equal), Methodology (equal), Software (equal)
Search for more papers by this authorLinjie Li
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 P. R. China
Contribution: Formal analysis (equal), Methodology (equal), Software (equal)
Search for more papers by this authorYexuan Pu
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 P. R. China
Contribution: Formal analysis (equal), Methodology (equal)
Search for more papers by this authorCorresponding Author
Dr. Xuming Zhuang
Jihua Laboratory, 28 Huandao South Road, Foshan, 528200, Guangdong Province P. R. China
Contribution: Data curation (equal), Methodology (lead), Software (equal), Visualization (equal)
Search for more papers by this authorCorresponding Author
Prof. Chenglong Li
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 P. R. China
Chongqing Research Institute, Jilin University, Chongqing, 401120 P. R. China
Contribution: Conceptualization (lead), Formal analysis (equal), Methodology (equal), Supervision (equal), Visualization (equal), Writing - original draft (equal), Writing - review & editing (equal)
Search for more papers by this authorProf. Yue Wang
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 P. R. China
Jihua Laboratory, 28 Huandao South Road, Foshan, 528200, Guangdong Province P. R. China
Jihua Hengye Electronic Materials CO. LTD., Foshan, 528200, Guangdong Province P. R. China
Contribution: Supervision (equal), Visualization (equal), Writing - original draft (supporting)
Search for more papers by this authorXinliang Cai
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 P. R. China
Contribution: Data curation (lead), Formal analysis (equal), Supervision (equal), Validation (equal), Writing - original draft (lead), Writing - review & editing (equal)
Search for more papers by this authorDr. Yincai Xu
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 P. R. China
Contribution: Conceptualization (equal), Methodology (equal), Writing - original draft (equal)
Search for more papers by this authorYue Pan
Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Science, Jilin University, Changchun, 130012 P. R. China
Contribution: Formal analysis (equal), Methodology (equal), Software (equal)
Search for more papers by this authorLinjie Li
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 P. R. China
Contribution: Formal analysis (equal), Methodology (equal), Software (equal)
Search for more papers by this authorYexuan Pu
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 P. R. China
Contribution: Formal analysis (equal), Methodology (equal)
Search for more papers by this authorCorresponding Author
Dr. Xuming Zhuang
Jihua Laboratory, 28 Huandao South Road, Foshan, 528200, Guangdong Province P. R. China
Contribution: Data curation (equal), Methodology (lead), Software (equal), Visualization (equal)
Search for more papers by this authorCorresponding Author
Prof. Chenglong Li
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 P. R. China
Chongqing Research Institute, Jilin University, Chongqing, 401120 P. R. China
Contribution: Conceptualization (lead), Formal analysis (equal), Methodology (equal), Supervision (equal), Visualization (equal), Writing - original draft (equal), Writing - review & editing (equal)
Search for more papers by this authorProf. Yue Wang
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012 P. R. China
Jihua Laboratory, 28 Huandao South Road, Foshan, 528200, Guangdong Province P. R. China
Jihua Hengye Electronic Materials CO. LTD., Foshan, 528200, Guangdong Province P. R. China
Contribution: Supervision (equal), Visualization (equal), Writing - original draft (supporting)
Search for more papers by this authorAbstract
Developing solution-processable red organic light-emitting diodes (OLEDs) with high color purity and efficiency based on multiple resonance thermally activated delayed fluorescence (MR-TADF) is a formidable challenge. Herein, by introducing auxiliary electron donor and acceptor moieties into the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) distributed positions of multiple resonance skeleton simultaneously, an effective strategy to obtain red MR-TADF emitters was represented. The proof-of-the-concept molecule BN-R exhibits a narrowband pure-red emission at 624 nm, with a high luminous efficiency of 94 % and a narrow bandwidth of 46 nm. Notably, the fabricated solution-processable pure-red OLED based on BN-R exhibits a state-of-the-art external quantum efficiency over 20 % with the Commission Internationale de I’Éclairage coordinates of (0.663, 0.337) and a long operational lifetime (LT50) of 1088 hours at an initial luminance of 1000 cd m−2.
Conflict of interest
The authors declare no conflict of interest.
Open Research
Data Availability Statement
Research data are not shared.
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