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https://hdl.handle.net/2440/111309
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dc.contributor.author | Dover, C. | - |
dc.contributor.author | Gallaher, J. | - |
dc.contributor.author | Frazer, L. | - |
dc.contributor.author | Tapping, P. | - |
dc.contributor.author | Petty, A. | - |
dc.contributor.author | Crossley, M. | - |
dc.contributor.author | Anthony, J. | - |
dc.contributor.author | Kee, T. | - |
dc.contributor.author | Schmidt, T. | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Nature Chemistry, 2018; 10(3):305-310 | - |
dc.identifier.issn | 1755-4330 | - |
dc.identifier.issn | 1755-4349 | - |
dc.identifier.uri | http://hdl.handle.net/2440/111309 | - |
dc.description.abstract | Singlet fission is a process whereby two triplet excitons can be produced from one photon, potentially increasing the efficiency of photovoltaic devices. Endothermic singlet fission is desired for a maximum energy-conversion efficiency, and such systems have been considered to form an excimer-like state with multiexcitonic character prior to the appearance of triplets. However, the role of the excimer as an intermediate has, until now, been unclear. Here we show, using 5,12-bis((triisopropylsilyl)ethynyl)tetracene in solution as a prototypical example, that, rather than acting as an intermediate, the excimer serves to trap excited states to the detriment of singlet-fission yield. We clearly demonstrate that singlet fission and its conjugate process, triplet-triplet annihilation, occur at a longer intermolecular distance than an excimer intermediate would impute. These results establish that an endothermic singlet-fission material must be designed to avoid excimer formation, thus allowing singlet fission to reach its full potential in enhancing photovoltaic energy conversion. | - |
dc.description.statementofresponsibility | Cameron B. Dover, Joseph K. Gallaher, Laszlo Frazer, Patrick C. Tapping, Anthony J. Petty II, Maxwell J. Crossley, John E. Anthony, Tak W. Kee and Timothy W. Schmidt | - |
dc.language.iso | en | - |
dc.publisher | Nature Publishing Group | - |
dc.rights | © 2018 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. | - |
dc.source.uri | http://dx.doi.org/10.1038/nchem.2926 | - |
dc.subject | Energy transfer; excited states; reaction kinetics and dynamics; light harvesting; optical spectroscopy | - |
dc.title | Endothermic singlet fission is hindered by excimer formation | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1038/nchem.2926 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/FT130100177 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/CE170100026 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/DP160103797 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/LE0989747 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Tapping, P. [0000-0002-2359-1304] | - |
dc.identifier.orcid | Kee, T. [0000-0002-4907-4663] | - |
Appears in Collections: | Aurora harvest 3 Chemistry publications |
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