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Evaluation of acenes as potential acceptors in thermally activated delayed fluorescence emitters and the promise of a phenoxazine–naphthalene emitter for OLEDs
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dc.contributor.author | Lee, Oliver S. | |
dc.contributor.author | Sharma, Nidhi | |
dc.contributor.author | Matulaitis, Tomas | |
dc.contributor.author | Slawin, Alexandra M. Z. | |
dc.contributor.author | Olivier, Yoann | |
dc.contributor.author | Samuel, Ifor D. W. | |
dc.contributor.author | Gather, Malte C. | |
dc.contributor.author | Zysman-Colman, Eli | |
dc.date.accessioned | 2024-02-05T11:30:09Z | |
dc.date.available | 2024-02-05T11:30:09Z | |
dc.date.issued | 2024-03-28 | |
dc.identifier | 299047159 | |
dc.identifier | c5c1b724-a934-45e1-bae6-14d529065453 | |
dc.identifier | 85183979057 | |
dc.identifier.citation | Lee , O S , Sharma , N , Matulaitis , T , Slawin , A M Z , Olivier , Y , Samuel , I D W , Gather , M C & Zysman-Colman , E 2024 , ' Evaluation of acenes as potential acceptors in thermally activated delayed fluorescence emitters and the promise of a phenoxazine–naphthalene emitter for OLEDs ' , Journal of Materials Chemistry C , vol. 12 , no. 12 , pp. 4273-4286 . https://doi.org/10.1039/d3tc04292h | en |
dc.identifier.issn | 2050-7526 | |
dc.identifier.other | Jisc: 1717374 | |
dc.identifier.other | ORCID: /0000-0003-0470-7356/work/152898753 | |
dc.identifier.other | ORCID: /0000-0002-9527-6418/work/152899128 | |
dc.identifier.other | ORCID: /0000-0002-4857-5562/work/152899328 | |
dc.identifier.other | ORCID: /0000-0001-7183-6022/work/152899590 | |
dc.identifier.uri | https://hdl.handle.net/10023/29155 | |
dc.description | Some computations were performed using resources kindly provided by the University of Mons (UMONS), supported by the Belgian National Fund for Scientific Research (FRS-FNRS). These computational resources were provided by the Consortium des Équipements de Calcul Intensif (CÉCI) funded by F. R. S.-FNRS under Grant 2.5020.11. Y. O. acknowledges funding by the Fonds de la Recherche Scientifique-FNRS under Grant no. F.4534.21 (MIS-IMAGINE). | en |
dc.description.abstract | Thermally activated delayed fluorescence (TADF) is one of the most promising technologies for harvesting triplet excitons in all-organic emitters, a property that is essential for achieving high efficiency in devices. Compounds that operate via this mechanism for emission typically rely on a combination of electron donating and accepting moieties separated by an aromatic bridge. Here we demonstrate that although naphthalene is underutilised as an acceptor, it can nonetheless be used in a donor–acceptor TADF emitter when coupled to two phenoxazines in the 1- and 4-positions. The compound 1,4-PXZ-Nap-PXZ emits at 508 nm, has a photoluminescence quantum yield of 48% and a delayed lifetime of 22.7 ms in a 20 wt% doped film in 1,3-bis(N-carbazolyl)benzene (mCP). An organic light-emitting diode (OLED) using this emitter showed a maximum external quantum efficiency (EQEmax) of 11% and green emission at λEL of 505 nm, demonstrating for the first time the potential of naphthalene-acceptor based emitters for devices. Finally, we have demonstrated by way of a density functional theory (DFT) study why naphthalene alone amongst linear acenes is suitable for this role. | |
dc.format.extent | 14 | |
dc.format.extent | 3370089 | |
dc.language.iso | eng | |
dc.relation.ispartof | Journal of Materials Chemistry C | en |
dc.subject | QD Chemistry | en |
dc.subject | DAS | en |
dc.subject.lcc | QD | en |
dc.title | Evaluation of acenes as potential acceptors in thermally activated delayed fluorescence emitters and the promise of a phenoxazine–naphthalene emitter for OLEDs | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. EaSTCHEM | en |
dc.contributor.institution | University of St Andrews. Organic Semiconductor Centre | 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. School of Physics and Astronomy | 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. Sir James Mackenzie Institute for Early Diagnosis | en |
dc.contributor.institution | University of St Andrews. Biomedical Sciences Research Complex | en |
dc.contributor.institution | University of St Andrews. Centre for Energy Ethics | en |
dc.identifier.doi | 10.1039/d3tc04292h | |
dc.description.status | Peer reviewed | en |
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