Journal article 883 views
Highly Efficient and Reproducible Nonfullerene Solar Cells from Hydrocarbon Solvents
,
Derya Baran,
Iain McCulloch
ACS Energy Letters, Volume: 2, Issue: 7, Pages: 1494 - 1500
Swansea University Author:
James Durrant
Full text not available from this repository: check for access using links below.
DOI (Published version): 10.1021/acsenergylett.7b00390
Abstract
With chlorinated solvents unlikely to be permitted for use in solution-processed organic solar cells in industry, there must be a focus on developing nonchlorinated solvent systems. Here we report high-efficiency devices utilizing a low-bandgap donor polymer (PffBT4T-2DT) and a nonfullerene acceptor...
| Published in: | ACS Energy Letters |
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| ISSN: | 2380-8195 2380-8195 |
| Published: |
2017
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa37057 |
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| Abstract: |
With chlorinated solvents unlikely to be permitted for use in solution-processed organic solar cells in industry, there must be a focus on developing nonchlorinated solvent systems. Here we report high-efficiency devices utilizing a low-bandgap donor polymer (PffBT4T-2DT) and a nonfullerene acceptor (EH-IDTBR) from hydrocarbon solvents and without using additives. When mesitylene was used as the solvent, rather than chlorobenzene, an improved power conversion efficiency (11.1%) was achieved without the need for pre- or post-treatments. Despite altering the processing conditions to environmentally friendly solvents and room-temperature coating, grazing incident X-ray measurements confirmed that active layers processed from hydrocarbon solvents retained the robust nanomorphology obtained with hot-processed chlorinated solvents. The main advantages of hydrocarbon solvent-processed devices, besides the improved efficiencies, were the reproducibility and storage lifetime of devices. Mesitylene devices showed better reproducibility and shelf life up to 4000 h with PCE dropping by only 8% of its initial value. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
7 |
| Start Page: |
1494 |
| End Page: |
1500 |