IRUS Total

Identifying triplet pathways in dilute pentacene films

File Description SizeFormat 
s41467-018-06330-x.pdfPublished version1.54 MBAdobe PDFView/Open
Title: Identifying triplet pathways in dilute pentacene films
Authors: Lubert-Perquel, D
Salvadori, E
Dyson, M
Stavrinou, P
Montis, R
Nagashima, H
Kobori, Y
Heutz, SEM
Kay, C
Item Type: Journal Article
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).
Issue Date: 11-Oct-2018
Date of Acceptance: 29-Aug-2018
URI: http://hdl.handle.net/10044/1/63950
DOI: 10.1038/s41467-018-06330-x
ISSN: 2041-1723
Publisher: Nature Research
Start Page: 1
End Page: 10
Journal / Book Title: Nature Communications
Volume: 9
Issue: 1
Copyright Statement: © The Author(s) 2018. 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/
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Engineering and Physical Sciences Research Council
Funder's Grant Number: EP/K037390/1
Keywords: Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
Publication Status: Published
Article Number: 4222
Online Publication Date: 2018-10-11
Appears in Collections:Materials
Experimental Solid State
Faculty of Natural Sciences
Faculty of Engineering