The entangled triplet pair state in acene and heteroacene materials

Chaw Keong Yong, Andrew J. Musser, Sam L. Bayliss, Steven Lukman, Hiroyuki Tamura, Olga Bubnova, Rawad K. Hallani, Aurélie Meneau, Roland Resel, Munetaka Maruyama, Shu Hotta, Laura M. Herz, David Beljonne, John E. Anthony, Jenny Clark () and Henning Sirringhaus ()
Additional contact information
Chaw Keong Yong: Cavendish Laboratory, Optoelectronics Group, University of Cambridge
Andrew J. Musser: Cavendish Laboratory, Optoelectronics Group, University of Cambridge
Sam L. Bayliss: Cavendish Laboratory, Optoelectronics Group, University of Cambridge
Steven Lukman: Cavendish Laboratory, Optoelectronics Group, University of Cambridge
Hiroyuki Tamura: The University of Tokyo
Olga Bubnova: Cavendish Laboratory, Optoelectronics Group, University of Cambridge
Rawad K. Hallani: University of Kentucky
Aurélie Meneau: Cavendish Laboratory, Optoelectronics Group, University of Cambridge
Roland Resel: Institute of Solid State Physics, Graz University of Technology
Munetaka Maruyama: Faculty of Materials Science and Engineering, Kyoto Institute of Technology, Matsugasaki
Shu Hotta: Faculty of Materials Science and Engineering, Kyoto Institute of Technology, Matsugasaki
Laura M. Herz: Clarendon Laboratory, University of Oxford
David Beljonne: Laboratory for Chemistry of Novel Materials, University of Mons
John E. Anthony: University of Kentucky
Jenny Clark: The University of Sheffield
Henning Sirringhaus: Cavendish Laboratory, Optoelectronics Group, University of Cambridge

Nature Communications, 2017, vol. 8, issue 1, 1-12

Abstract: Abstract Entanglement of states is one of the most surprising and counter-intuitive consequences of quantum mechanics, with potent applications in cryptography and computing. In organic materials, one particularly significant manifestation is the spin-entangled triplet-pair state, which mediates the spin-conserving fission of one spin-0 singlet exciton into two spin-1 triplet excitons. Despite long theoretical and experimental exploration, the nature of the triplet-pair state and inter-triplet interactions have proved elusive. Here we use a range of organic semiconductors that undergo singlet exciton fission to reveal the photophysical properties of entangled triplet-pair states. We find that the triplet pair is bound with respect to free triplets with an energy that is largely material independent (∼30 meV). During its lifetime, the component triplets behave cooperatively as a singlet and emit light through a Herzberg–Teller-type mechanism, resulting in vibronically structured photoluminescence. In photovoltaic blends, charge transfer can occur from the bound triplet pairs with >100% photon-to-charge conversion efficiency.

Date: 2017
References: Add references at CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.nature.com/articles/ncomms15953 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15953

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms15953

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().