Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/151310
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dc.contributor.authorHu, Hongweien_US
dc.contributor.authorZhao, Damingen_US
dc.contributor.authorGao, Yangen_US
dc.contributor.authorQiao, Xianfengen_US
dc.contributor.authorSalim, Teddyen_US
dc.contributor.authorChen, Bingbingen_US
dc.contributor.authorChia, Elbert Ee Minen_US
dc.contributor.authorGrimsdale, Andrew C.en_US
dc.contributor.authorLam, Yeng Mingen_US
dc.date.accessioned2021-07-06T02:46:28Z-
dc.date.available2021-07-06T02:46:28Z-
dc.date.issued2019-
dc.identifier.citationHu, H., Zhao, D., Gao, Y., Qiao, X., Salim, T., Chen, B., Chia, E. E. M., Grimsdale, A. C. & Lam, Y. M. (2019). Harvesting triplet excitons in lead-halide perovskites for room-temperature phosphorescence. Chemistry of Materials, 31(7), 2597-2602. https://dx.doi.org/10.1021/acs.chemmater.9b00315en_US
dc.identifier.issn0897-4756en_US
dc.identifier.other0000-0001-8633-8771-
dc.identifier.other0000-0003-2498-3024-
dc.identifier.other0000-0001-9390-8074-
dc.identifier.urihttps://hdl.handle.net/10356/151310-
dc.description.abstractRoom-temperature phosphorescence (RTP) has a much longer lifetime than fluorescence as it involves triplet excitons. This extended lifetime enables the design of advanced optoelectronics and biological sensing technologies. Despite the omnipresence of triplet states, harnessing these triplet excitons remains challenging for most organic materials because of forbidden transitions between singlet and triplet states. Here, we report novel organic–inorganic hybrid perovskites based on conjugated organic cations with low-lying triplet energy levels to extract triplet excitons from the inorganic component, thereby generating RTP with a long lifetime in the millisecond range. Dexter-type energy transfer was confirmed to occur in this type of hybrid perovskites with transfer efficiency of up to 80%. More impressively, multiple-colored phosphorescence was achieved by a facile design of the system using organic cations with different triplet exciton energies. These results are expected to greatly expand the prospects of hybrid perovskites with functional organic cations for versatile display applications.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.description.sponsorshipNanyang Technological Universityen_US
dc.language.isoenen_US
dc.relationMOE2015-T2-2-065en_US
dc.relationMOE2016-T2-1-054en_US
dc.relation.ispartofChemistry of Materialsen_US
dc.rights© 2019 American Chemical Society. All rights reserved.en_US
dc.subjectEngineering::Materialsen_US
dc.titleHarvesting triplet excitons in lead-halide perovskites for room-temperature phosphorescenceen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.identifier.doi10.1021/acs.chemmater.9b00315-
dc.identifier.scopus2-s2.0-85064264447-
dc.identifier.issue7en_US
dc.identifier.volume31en_US
dc.identifier.spage2597en_US
dc.identifier.epage2602en_US
dc.subject.keywordsExcitonsen_US
dc.subject.keywordsLayersen_US
dc.description.acknowledgementH.H., and Y.M.L. acknowledge financial support from Institute for Sports Research, Nanyang Technological University. E.E.M.C. acknowledges support from the Singapore Ministry of Education AcRF Tier 2 (MOE2015-T2-2-065 and MOE2016-T2-1-054). We would like to acknowledge the Facility for Analysis, Characterization, Testing and Simulation (FACTS), Nanyang Technological University, Singapore, for use of their electron microscopy and XRD facilities.en_US
item.fulltextNo Fulltext-
item.grantfulltextnone-
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