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Imparting Stability to Organic Photovoltaic Components through Molecular Engineering: Mitigating Reactions with Singlet Oxygen.

Authors :
Henke, Petr
Rindom, Cecilie
Kanta Aryal, Um
Frydenlund Jespersen, Malte
Broløs, Line
Mansø, Mads
Turkovic, Vida
Madsen, Morten
Mikkelsen, Kurt V.
Ogilby, Peter R.
Brøndsted Nielsen, Mogens
Source :
ChemSusChem; 6/22/2023, Vol. 16 Issue 12, p1-12, 12p
Publication Year :
2023

Abstract

One key challenge in the development of viable organic photovoltaic devices is to design component molecules that do not degrade during combined exposure to oxygen and light. Such molecules should thus remain comparatively unreactive towards singlet molecular oxygen and not act as photosensitizers for the generation of this undesirable species. Here, novel redox‐active chromophores that combine these two properties are presented. By functionalizing indenofluorene‐extended tetrathiafulvalenes (IF‐TTFs) with cyano groups at the indenofluorene core using Pd‐catalyzed cyanation reactions, we find that the reactivity of the exocyclic fulvene carbon‐carbon double bonds towards singlet oxygen is considerably reduced. The new cyano‐functionalized IF‐TTFs were tested in non‐fullerene acceptor based organic photovoltaic proof‐of‐principle devices, revealing enhanced device stability. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
18645631
Volume :
16
Issue :
12
Database :
Complementary Index
Journal :
ChemSusChem
Publication Type :
Academic Journal
Accession number :
164481036
Full Text :
https://doi.org/10.1002/cssc.202202320