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DOI: 10.1055/s-0041-1726459
Dimeric Phenazinothiadiazole Acceptors in Bulk Heterojunction Solar Cells
Funding Information L.A. thanks the ‘Studienstiftung des deutschen Volkes’ for a scholarship. U. B. and Y. V. thank the Deutsche Forschungsgemeinschaft (SFB 1249) for generous support (Project A01 and C04).
![](https://www.thieme-connect.de/media/10.1055-s-00040992/202102/lookinside/thumbnails/10-1055-s-0041-1726459_210007sc-1.jpg)
Abstract
Two covalently linked triisopropylsilyl-ethynylated phenazinothiadiazoles were prepared through condensation of a spirocyclic and a bicyclic tetraketone with a 5,6-diaminobenzothiadiazole. The spirobisindene- and the ethanoanthracene-based linkers render the electron acceptors amorphous in thin films. The optoelectronic properties of the non-conjugated dimers are indistinguishable from that of the crystalline monomer. Bulk heterojunction solar cells were prepared with power conversion efficiencies peaking at 1.6%. The choice of linker neither influenced optical and electrochemical properties nor device performance.
Key words
arenes - condensation - electron acceptors - non-fullerene acceptors - organic electronics - organic solar cellsSupporting Information
Supporting Information for this article is available online at https://doi.org/10.1055/s-0041-1726459.
Dedicated to Professor Peter Bäuerle on the occasion of his 65th birthday.
Publication History
Received: 15 January 2021
Accepted: 16 February 2021
Article published online:
01 April 2021
© 2021. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)
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References And Notes
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