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Issue 3, 2016
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Roll-coating fabrication of flexible organic solar cells: comparison of fullerene and fullerene-free systems

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Abstract

Flexible organic solar cells (OSCs) based on a blend of low-bandgap polymer donor PTB7-TH and non-fullerene small molecule acceptor IEIC were fabricated via a roll-coating process under ambient atmosphere. Both an indium tin oxide (ITO)-free substrate and a flexible ITO substrate were employed in these inverted OSCs. OSCs with flexible ITO and ITO-free substrates exhibited power conversion efficiencies (PCEs) up to 2.26% and 1.79%, respectively, which were comparable to those of the reference devices based on fullerene acceptors under the same conditions. This is the first example for all roll-coating fabrication procedures for flexible OSCs based on non-fullerene acceptors with the PCE exceeding 2%. The fullerene-free OSCs exhibited better dark storage stability than the fullerene-based control devices.

Graphical abstract: Roll-coating fabrication of flexible organic solar cells: comparison of fullerene and fullerene-free systems

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Supplementary files

Article information


Submitted
14 Sep 2015
Accepted
04 Dec 2015
First published
07 Dec 2015

J. Mater. Chem. A, 2016,4, 1044-1051
Article type
Paper

Roll-coating fabrication of flexible organic solar cells: comparison of fullerene and fullerene-free systems

K. Liu, T. T. Larsen-Olsen, Y. Lin, M. Beliatis, E. Bundgaard, M. Jørgensen, F. C. Krebs and X. Zhan, J. Mater. Chem. A, 2016, 4, 1044
DOI: 10.1039/C5TA07357J

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