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Article: Strongly Luminescent Tungsten Emitters with Emission Quantum Yields of up to 84%: TADF and High-Efficiency Molecular Tungsten OLEDs

TitleStrongly Luminescent Tungsten Emitters with Emission Quantum Yields of up to 84%: TADF and High-Efficiency Molecular Tungsten OLEDs
Authors
KeywordsFluorescence
OLEDs
Schiff base complexes
TADF
Tungsten
Issue Date2019
PublisherWiley - VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at http://www3.interscience.wiley.com/journal/26737/home
Citation
Angewandte Chemie (International Edition), 2019, v. 58 n. 42, p. 14896-14900 How to Cite?
AbstractMetal‐TADF (thermally activated delayed fluorescence) emitters hold promise in the development of next generation light‐emitting materials for display and lighting applications, examples of which are, however, largely confined to CuI and recently AuI, AgI, and AuIII emitters. Herein is described the design strategy for an unprecedented type of metal‐TADF emitter based on inexpensive tungsten metal chelated with Schiff base ligand that exhibit high emission quantum yields of up to 56 % in solutions and 84 % in thin‐film (5 wt % in 1,3‐bis(N‐carbazolyl)benzene, mCP) at room temperature. Femtosecond time‐resolved emission (fs‐TRE) spectroscopy and DFT calculations were undertaken to decipher the TADF properties. Solution‐processed OLEDs fabricated with the W‐TADF emitter demonstrated external quantum efficiency (EQE) and luminance of up to 15.6 % and 16890 cd m−2, respectively.
Persistent Identifierhttp://hdl.handle.net/10722/274824
ISSN
2019 Impact Factor: 12.959
2015 SCImago Journal Rankings: 6.229

 

DC FieldValueLanguage
dc.contributor.authorChan, KT-
dc.contributor.authorLam, TL-
dc.contributor.authorYu, D-
dc.contributor.authorDu, L-
dc.contributor.authorPhillips, DL-
dc.contributor.authorKwong, CL-
dc.contributor.authorTong, GSM-
dc.contributor.authorCheng, G-
dc.contributor.authorChe, CM-
dc.date.accessioned2019-09-10T02:29:33Z-
dc.date.available2019-09-10T02:29:33Z-
dc.date.issued2019-
dc.identifier.citationAngewandte Chemie (International Edition), 2019, v. 58 n. 42, p. 14896-14900-
dc.identifier.issn1433-7851-
dc.identifier.urihttp://hdl.handle.net/10722/274824-
dc.description.abstractMetal‐TADF (thermally activated delayed fluorescence) emitters hold promise in the development of next generation light‐emitting materials for display and lighting applications, examples of which are, however, largely confined to CuI and recently AuI, AgI, and AuIII emitters. Herein is described the design strategy for an unprecedented type of metal‐TADF emitter based on inexpensive tungsten metal chelated with Schiff base ligand that exhibit high emission quantum yields of up to 56 % in solutions and 84 % in thin‐film (5 wt % in 1,3‐bis(N‐carbazolyl)benzene, mCP) at room temperature. Femtosecond time‐resolved emission (fs‐TRE) spectroscopy and DFT calculations were undertaken to decipher the TADF properties. Solution‐processed OLEDs fabricated with the W‐TADF emitter demonstrated external quantum efficiency (EQE) and luminance of up to 15.6 % and 16890 cd m−2, respectively.-
dc.languageeng-
dc.publisherWiley - VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at http://www3.interscience.wiley.com/journal/26737/home-
dc.relation.ispartofAngewandte Chemie (International Edition)-
dc.rightsThis is the peer reviewed version of the following article: Angewandte Chemie (International Edition), 2019, v. 58 n. 42, p. 14896-14900, which has been published in final form at https://doi.org/10.1002/anie.201906698. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.-
dc.subjectFluorescence-
dc.subjectOLEDs-
dc.subjectSchiff base complexes-
dc.subjectTADF-
dc.subjectTungsten-
dc.titleStrongly Luminescent Tungsten Emitters with Emission Quantum Yields of up to 84%: TADF and High-Efficiency Molecular Tungsten OLEDs-
dc.typeArticle-
dc.identifier.emailLam, TL: joeltl@hku.hk-
dc.identifier.emailDu, L: ailleen@hku.hk-
dc.identifier.emailPhillips, DL: phillips@hku.hk-
dc.identifier.emailTong, GSM: tongsm@hku.hk-
dc.identifier.emailCheng, G: ggcheng@hku.hk-
dc.identifier.emailChe, CM: cmche@hku.hk-
dc.identifier.authorityPhillips, DL=rp00770-
dc.identifier.authorityTong, GSM=rp00790-
dc.identifier.authorityCheng, G=rp02145-
dc.identifier.authorityChe, CM=rp00670-
dc.description.naturepostprint-
dc.identifier.doi10.1002/anie.201906698-
dc.identifier.pmid31321857-
dc.identifier.scopuseid_2-s2.0-85071758947-
dc.identifier.hkuros302838-
dc.identifier.volume58-
dc.identifier.issue42-
dc.identifier.spage14896-
dc.identifier.epage14900-
dc.publisher.placeGermany-

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