Dimeric Phenazinothiadiazole Acceptors in Bulk Heterojunction Solar Cells

Dimeric Phenazinothiadiazole Acceptors in Bulk Heterojunction Solar Cells

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...

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Bibliographic Details
Main Authors: Lukas Ahrens, Yvonne J. Hofstetter, Baris Celik, Julian F. Butscher, Frank Rominger, Jan Freudenberg, Yana Vaynzof, Uwe H. F. Bunz
Format: Article
Language:English
Published: Georg Thieme Verlag 2021-04-01
Series:Organic Materials
Subjects:
arenes
condensation
electron acceptors
non-fullerene acceptors
organic electronics
organic solar cells
Online Access:http://www.thieme-connect.de/DOI/DOI?10.1055/s-0041-1726459
Description
Summary: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.
ISSN:2625-1825

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