Nonfullerene Polymer Solar Cells with 8.5% Efficiency Enabled by a New Highly Twisted Electron Acceptor Dimer

Fullerene‐free and processing additive‐free 8.5% efficient polymer solar cells are achieved by using a new 3,4‐ethylenedioxythiophene‐linked arylene diimide dimer with a 76° twist angle. The devices combine high (78–83%) external quantum efficiency with high (0.91–0.95 V) photovoltages and thus have...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2016-01, Vol.28 (1), p.124-131
Main Authors: Hwang, Ye-Jin, Li, Haiyan, Courtright, Brett A. E., Subramaniyan, Selvam, Jenekhe, Samson A.
Format: Article
Language:English
Subjects:
Devices
Diimide
diimide dimers
Dimers
Energy management
nonfullerene acceptors
optical band gap
organic solar cells
Photovoltages
Photovoltaic cells
polymer solar cells
Polymers
Quantum efficiency
Solar cells
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Summary:Fullerene‐free and processing additive‐free 8.5% efficient polymer solar cells are achieved by using a new 3,4‐ethylenedioxythiophene‐linked arylene diimide dimer with a 76° twist angle. The devices combine high (78–83%) external quantum efficiency with high (0.91–0.95 V) photovoltages and thus have relatively low optical bandgap energy loss.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201503801