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

Journal article (2018)

Authors

Y. Aulin ChemE/Opto-electronic Materials - AS
K.M. Felter ChemE/Opto-electronic Materials - AS
D.D. Gunbas ChemE/Opto-electronic Materials - AS
R. Dubey OLD ChemE/Organic Materials and Interfaces , ChemE/Opto-electronic Materials - AS
W.F. Jager OLD ChemE/Organic Materials and Interfaces
F.C. Grozema ChemE/Opto-electronic Materials - AS
Research Group
OLD ChemE/Organic Materials and Interfaces
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Published Date

01-04-2018

Language

English

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Research Group

OLD ChemE/Organic Materials and Interfaces

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 %.

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