Journal article
Identifying triplet pathways in dilute pentacene films
- Abstract:
- Building efficient triplet-harvesting layers for photovoltaic applications requires a deep understanding of the microscopic properties of the components involved and their dynamics. Singlet fission is a particularly appealing mechanism as it generates two excitons from a single photon. However, the pathways of the coupled triplets into free species, and their dependence on the intermolecular geometry, has not been fully explored. In this work, we produce highly ordered dilute pentacene films with distinct parallel and herringbone dimers and aggregates. Using electron paramagnetic resonance spectroscopy, we provide compelling evidence for the formation of distinct quintet excitons in ambient conditions, with intrinsically distinctive electronic and kinetic properties. We find that the ability of quintets to separate into free triplets is promoted in the parallel dimers and this provides molecular design rules to control the triplets, favouring either enhanced photovoltaic efficiency (parallel) or strongly bound pairs that could be exploited for logic applications (herringbone).
- Publication status:
- Published
- Peer review status:
- Peer reviewed
Actions
Access Document
- Files:
-
-
(Preview, Version of record, pdf, 1.8MB, Terms of use)
-
- Publisher copy:
- 10.1038/s41467-018-06330-x
Authors
+ Engineering and Physical Sciences Research Council (EPSRC)
More from this funder
- Grant:
- EP/K037390/1
- Publisher:
- Nature Research
- Journal:
- Nature Communications More from this journal
- Volume:
- 9
- Article number:
- 4222
- Publication date:
- 2018-10-11
- Acceptance date:
- 2018-08-29
- DOI:
- EISSN:
-
2041-1723
- Pmid:
-
30310077
- Language:
-
English
- Keywords:
- Pubs id:
-
pubs:927305
- UUID:
-
uuid:7cd5d7fd-1b62-4df5-93bc-b22cc4f8838d
- Local pid:
-
pubs:927305
- Source identifiers:
-
927305
- Deposit date:
-
2018-10-30
Terms of use
- Copyright holder:
- Lubert-Perquel et al
- Copyright date:
- 2018
- Notes:
- © The Author(s) 2018. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
- Licence:
- CC Attribution (CC BY)
If you are the owner of this record, you can report an update to it here: Report update to this record