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Issue 2, 2018
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Fluorine-induced self-doping and spatial conformation in alcohol-soluble interlayers for highly-efficient polymer solar cells

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Abstract

The molecular design strategy for high-performance photoelectric materials emphasizes the intrinsic charge transfer/transport as well as the role of the polymer chemical structure and chain conformation. Here, we report a new interface engineering strategy for non-fullerene polymer solar cells (PSCs) by employing highly conductive polyelectrolyte interface layers with a fluorinated conjugated backbone. The fluorine atom-induced strong n-type self-doping effect and optimized expanded conformation were observed to substantially improve their intrinsic charge mobility. An outstanding power conversion efficiency of 11.51% was obtained when applying the new polyelectrolyte interlayer in PSCs based on a PBDB-T:ITIC active layer.

Graphical abstract: Fluorine-induced self-doping and spatial conformation in alcohol-soluble interlayers for highly-efficient polymer solar cells

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Supplementary files

Article information


Submitted
01 Oct 2017
Accepted
10 Nov 2017
First published
11 Nov 2017

J. Mater. Chem. A, 2018,6, 423-433
Article type
Paper

Fluorine-induced self-doping and spatial conformation in alcohol-soluble interlayers for highly-efficient polymer solar cells

X. Jin, Y. Wang, X. Cheng, H. Zhou, L. Hu, Y. Zhou, L. Chen and Y. Chen, J. Mater. Chem. A, 2018, 6, 423
DOI: 10.1039/C7TA08669E

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