CC BY-NC-ND 4.0 · Organic Materials 2020; 02(03): 229-234
DOI: 10.1055/s-0040-1714283
Focus Issue: Curved Organic π-Systems
Short Communication

Bowl-Shaped Naphthalimide-Annulated Corannulene as Nonfullerene Acceptor in Organic Solar Cells

Kaan Menekse
a   Center for Nanosystems Chemistry, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
Rebecca Renner
b   Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
Bernhard Mahlmeister
a   Center for Nanosystems Chemistry, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
Matthias Stolte
a   Center for Nanosystems Chemistry, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
b   Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
a   Center for Nanosystems Chemistry, Universität Würzburg, Theodor-Boveri-Weg, 97074 Würzburg, Germany
b   Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
› Author Affiliations
Funding Information We are grateful for financial support from the Deutsche Forschungsgemeinschaft (Grant Wu 317/20-1) as well as the Bavarian Research Program “Solar Technologies Go Hybrid”.


An electron-poor bowl-shaped naphthalimide-annulated corannulene with branched alkyl residues in the imide position was synthesized by a palladium-catalyzed cross-coupling annulation sequence. This dipolar compound exhibits strong absorption in the visible range along with a low-lying LUMO level at –3.85 eV, enabling n-type charge transport in organic thin-film transistors. Furthermore, we processed inverted bulk-heterojunction solar cells in combination with the two donor polymers PCE–10 and PM6 to achieve open-circuit voltages up to 1.04 V. By using a blend of the self-assembled naphthalimide-annulated corannulene and PCE–10, we were able to obtain a power conversion efficiency of up to 2.1%, which is to the best of our knowledge the highest reported value for a corannulene-based organic solar cell to date.

Supporting Information

Supporting information for this article is available online at

Kaan Menekse and Rebecca Renner contributed equally to this work.

Supplementary Material

Publication History

Received: 25 May 2020

Accepted: 12 June 2020

Article published online:
09 September 2020

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