Developments and Challenges Involving Triplet Transfer across Organic/Inorganic Heterojunctions for Singlet Fission and Photon Upconversion

Review (2023)
Authors

Sourav Maiti (STFC)

Laurens Siebbeles (TU Delft - ChemE/Opto-electronic Materials)

Research Group
ChemE/Opto-electronic Materials
Copyright
© 2023 Sourav Maiti, L.D.A. Siebbeles
To reference this document use:
https://doi.org/10.1021/acs.jpclett.3c03013
More Info
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Publication Year
2023
Language
English
Copyright
© 2023 Sourav Maiti, L.D.A. Siebbeles
Research Group
ChemE/Opto-electronic Materials
Issue number
49
Volume number
14
Pages (from-to)
11168-11176
DOI:
https://doi.org/10.1021/acs.jpclett.3c03013
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Abstract

In this Perspective, we provide an overview of recent advances in harvesting triplets for photovoltaic and photon upconversion applications from two angles. In singlet fission-sensitized solar cells, the triplets are harvested through a low band gap semiconductor such as Si. Recent literature has shown how a thin interlayer or orientation of the singlet fission molecule can successfully lead to triplet transfer. On the other hand, the integration of transition metal dichalcogenides (TMDCs) with suitable organic molecules has shown triplet-triplet annihilation upconversion (TTA-UC) of near-infrared photons. We consider the theoretical aspect of the triplet transfer process between a TMDC and organic semiconductors. We discuss possible bottlenecks that can limit the harvesting of energy from triplets and perspectives to overcome these.