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Issue 21, 2017
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A regioregular conjugated polymer for high performance thick-film organic solar cells without processing additive

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Abstract

To address the challenges of reliability and facile processability of a benchmark polymer PTB7-Th, one of the most prevailing donor materials utilized in organic solar cells, we have systematically investigated the correlations among chemical structure, processing, morphology and device performance. Our study reveals that the regioregularity of PTB7-Th plays a crucial role in polymer properties as well as the fabrication process of devices. The regioregular polymer entirely consisting of favourable repeat units is capable of realizing high power conversion efficiency (>10%) in organic solar cells without using any solvent additive and tedious processing treatments. More importantly, the device efficiency based on this regioregular polymer is insensitive over a broad range of film thickness (from 100 nm to >400 nm). This will be very advantageous for manufacturing highly efficient and stable polymer solar cells by high throughput fabrication processes.

Graphical abstract: A regioregular conjugated polymer for high performance thick-film organic solar cells without processing additive

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Article information


Submitted
18 Mar 2017
Accepted
26 Apr 2017
First published
26 Apr 2017

J. Mater. Chem. A, 2017,5, 10517-10525
Article type
Paper

A regioregular conjugated polymer for high performance thick-film organic solar cells without processing additive

H. Zhong, L. Ye, J. Chen, S. B. Jo, C. Chueh, J. H. Carpenter, H. Ade and A. K.-Y. Jen, J. Mater. Chem. A, 2017, 5, 10517
DOI: 10.1039/C7TA02391J

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