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Merging boron and carbonyl based MR-TADF emitter designs to achieve high performance pure blue OLEDs
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dc.contributor.author | Wu, Sen | |
dc.contributor.author | Zhang, Le | |
dc.contributor.author | Wang, Jingxiang | |
dc.contributor.author | Gupta, Abhishek Kumar | |
dc.contributor.author | Samuel, Ifor David William | |
dc.contributor.author | Zysman-Colman, Eli | |
dc.date.accessioned | 2023-06-06T10:30:06Z | |
dc.date.available | 2023-06-06T10:30:06Z | |
dc.date.issued | 2023-07-10 | |
dc.identifier | 286142951 | |
dc.identifier | 9fe8a9be-63ab-4b38-96da-bc61363f5f2e | |
dc.identifier | 85160936346 | |
dc.identifier.citation | Wu , S , Zhang , L , Wang , J , Gupta , A K , Samuel , I D W & Zysman-Colman , E 2023 , ' Merging boron and carbonyl based MR-TADF emitter designs to achieve high performance pure blue OLEDs ' , Angewandte Chemie International Edition , vol. 62 , no. 28 , e202305182 . https://doi.org/10.1002/anie.202305182 | en |
dc.identifier.issn | 1433-7851 | |
dc.identifier.other | ORCID: /0000-0001-7183-6022/work/136696818 | |
dc.identifier.uri | https://hdl.handle.net/10023/27750 | |
dc.description | Funding: China Scholarship Council - 2019 06250199, 2020 06250026; Engineering and Physical Sciences Research Council - EP/L017008, EP/P010482/1. | en |
dc.description.abstract | Multiresonant thermally activated delayed fluorescence (MR-TADF) compounds are attractive as emitters for organic light-emitting diodes (OLEDs) as they can simultaneously harvest both singlet and triplet excitons to produce light in the device and show very narrow emission spectra, which translates to excellent color purity. Here, we report the first example of an MR-TADF emitter (DOBDiKTa) that fuses together fragments from the two major classes of MR-TADF compounds, those containing boron (DOBNA) and those containing carbonyl groups (DiKTa) as acceptor fragments in the MR-TADF skeleton. The resulting molecular design, this compound shows desirable narrowband pure blue emission and efficient TADF character. The co-host OLED with DOBDiKTa as the emitter showed a maximum external quantum efficiency (EQEmax) of 17.4 %, an efficiency roll-off of 32 % at 100 cd m−2, and Commission Internationale de l’Éclairage (CIE) coordinates of (0.14, 0.12). Compared to DOBNA and DiKTa, DOBDiKTa shows higher device efficiency with reduced efficiency roll-off while maintaining a high color purity, which demonstrates the promise of the proposed molecular design. | |
dc.format.extent | 8 | |
dc.format.extent | 5819038 | |
dc.language.iso | eng | |
dc.relation.ispartof | Angewandte Chemie International Edition | en |
dc.subject | Multiresonant thermally activated delayed fluorescence | en |
dc.subject | Organic light-emitting diodes | en |
dc.subject | Blue emitters | en |
dc.subject | Narrowband emission | en |
dc.subject | Boron | en |
dc.subject | QD Chemistry | en |
dc.subject | QC Physics | en |
dc.subject | DAS | en |
dc.subject | MCC | en |
dc.subject.lcc | QD | en |
dc.subject.lcc | QC | en |
dc.title | Merging boron and carbonyl based MR-TADF emitter designs to achieve high performance pure blue OLEDs | en |
dc.type | Journal article | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.institution | University of St Andrews. School of Chemistry | en |
dc.contributor.institution | University of St Andrews. Institute of Behavioural and Neural Sciences | en |
dc.contributor.institution | University of St Andrews. Centre for Biophotonics | en |
dc.contributor.institution | University of St Andrews. Condensed Matter Physics | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Centre for Energy Ethics | en |
dc.contributor.institution | University of St Andrews. EaSTCHEM | en |
dc.identifier.doi | 10.1002/anie.202305182 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | ep/l017008/1 | en |
dc.identifier.grantnumber | EP/P010482/1 | en |
dc.identifier.grantnumber | EP/P010482/1 | en |
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