دورية أكاديمية
Deep blue oxadiazole-containing thermally activated delayed fluorescence emitters for organic light-emitting diodes
| العنوان: | Deep blue oxadiazole-containing thermally activated delayed fluorescence emitters for organic light-emitting diodes |
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| المؤلفون: | Wong, Michael Yin, Krotkus, Simonas, Copley, Graeme, Li, Wenbo, Murawski, Caroline, Hall, David, Hedley, Gordon, Jaricot, Marie, Cordes, David B., Slawin, Alexandra M. Z., Olivier, Yoann, Beljonne, David, Muccioli, Luca, Moral, Mónica, Sancho-García, Juan Carlos, Gather, Malte C, Samuel, Ifor D. W., Zysman-Colman, Eli |
| المساهمون: | EPSRC, European Commission, University of St Andrews. School of Physics and Astronomy, University of St Andrews. School of Chemistry, University of St Andrews. EaSTCHEM, University of St Andrews. Biomedical Sciences Research Complex, University of St Andrews. Condensed Matter Physics |
| سنة النشر: | 2019 |
| المجموعة: | University of St Andrews: Digital Research Repository |
| مصطلحات موضوعية: | Thermally activated delayed fluorescence, Organic light emitting diodes, Oxadiazoles, Blue emitters, DFT calculations, QD Chemistry, DAS, QD |
| الوصف: | EZ-C thanks the University of St Andrews for support. The authors are grateful to the EPSRC for financial support (grants EP/P010482/1, EP/J01771X and EP/J00916). IDWS is a Royal Society Wolfson Research Merit Award Holder. CM acknowledges funding by the European Commission through a Marie Skłodowska Curie Individual Fellowship (No. 703387). ; A series of four novel deep blue to sky blue thermally activated delayed fluorescence (TADF) emitters (2CzdOXDMe, 2CzdOXD4MeOPh, 2CzdOXDPh and 2CzdOXD4CF3Ph) have been synthesized and characterized. These oxadiazole-based emitters demonstrated bluer emission compared with reference emitter 2CzPN thanks to the weaker acceptor strength of oxadiazole moieties. In particular, the oxadiazole compounds doped in hosts (mCP and PPT) emitted from 435-474 nm with photoluminescence quantum yields ranging from 14%-55%. The emitters possess relatively large singlet-triplet excited state energy gaps (ΔEST) from 0.25-0.46 eV resulting in long lifetimes of the delayed components ranging from 4.8 to 25.8 ms. Electroluminescent devices using these oxadiazole emitters as dopant emitters gave emission maxima (λEL) from 446 nm to 474 nm with maximum external quantum efficiencies ranging from 4.2-11.2%. ; Peer reviewed |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1944-8244 |
| العلاقة: | ACS Applied Materials & Interfaces; 255931811; bfac0ac4-4564-4da8-9f94-e28077839dbb; 85053880505; 000446919800047; Wong , M Y , Krotkus , S , Copley , G , Li , W , Murawski , C , Hall , D , Hedley , G , Jaricot , M , Cordes , D B , Slawin , A M Z , Olivier , Y , Beljonne , D , Muccioli , L , Moral , M , Sancho-García , J C , Gather , M C , Samuel , I D W & Zysman-Colman , E 2018 , ' Deep blue oxadiazole-containing thermally activated delayed fluorescence emitters for organic light-emitting diodes ' , ACS Applied Materials & Interfaces , vol. In press . https://doi.org/10.1021/acsami.8b11136Test; RIS: urn:AF44D71EF8C93391DD08C7471B5D579E; ORCID: /0000-0002-5366-9168/work/48516818; ORCID: /0000-0002-4857-5562/work/48516878; ORCID: /0000-0001-7183-6022/work/56639105; ORCID: /0000-0002-9527-6418/work/56861814; https://hdl.handle.net/10023/18433Test; EP/P010482/1; EP/J01771X/1; 703387 |
| DOI: | 10.1021/acsami.8b11136 |
| الإتاحة: | https://doi.org/10.1021/acsami.8b11136Test https://hdl.handle.net/10023/18433Test |
| رقم الانضمام: | edsbas.21184D3B |
| قاعدة البيانات: | BASE |
| تدمد: | 19448244 |
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| DOI: | 10.1021/acsami.8b11136 |