Morphology-Independent Efficient Singlet Exciton Fission in Perylene Diimide Thin Films

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Morphology-Independent Efficient Singlet Exciton Fission in Perylene Diimide Thin Films

Journal Article (2018)

Author(s)

Yaroslav V. Aulin (TU Delft - ChemE/Opto-electronic Materials)

Kevin M. Felter (TU Delft - ChemE/Opto-electronic Materials)

D. Deniz Günbas (TU Delft - ChemE/Opto-electronic Materials)

Rajeev K. Dubey (TU Delft - ChemE/Opto-electronic Materials, TU Delft - OLD ChemE/Organic Materials and Interfaces)

Wolter F. Jager (TU Delft - OLD ChemE/Organic Materials and Interfaces)

Ferdinand C. Grozema (TU Delft - ChemE/Opto-electronic Materials)

Singlet fission Photophysics Time-resolved spectroscopy Molecular packing Perylene diimide

DOI related publication

https://doi.org/10.1002/cplu.201700449 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:289d9607-b0d3-43ea-ad57-8cf0194b3045

More Info

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Publication Year

2018

Language

English

Issue number

4

Volume number

83

Pages (from-to)

230-238

Downloads counter

230

Abstract

Perylene diimides are conjugated chromophores that are of considerable interest owing to their ability to transform a singlet excited state into two triplets by singlet fission. Although singlet fission has previously been reported for certain perylene diimide derivatives, there is some uncertainty about the rates and yield of the process in these materials. In this report, ultrafast transient absorption spectroscopy is used to demonstrate that singlet fission in perylene diimides can occur on a sub-picosecond timescale with quantum yields approaching the theoretical limit of 200 %.