Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/14110
Title: | Highly Efficient and Reproducible Nonfullerene Solar Cells from Hydrocarbon Solvents |
Authors: | McCulloch, Iain Zhang, Weimin Amassian, Aram Little, Mark Pont, Sebastian Ashraf, Raja Shahid Hamid, Zeinab Neophytou, Marios Baran, Derya Wadsworth, Andrew Moser, Maximilian Durrant, James R. Abdelsamie, Maged |
Major Field of Science: | Engineering and Technology |
Field Category: | Mechanical Engineering;Materials Engineering |
Keywords: | Organic photovoltaics;Solar cells;Fullerenes |
Issue Date: | 14-Jul-2017 |
Source: | ACS Energy Letters, 2017, vol. 2, no. 7, pp. 1494-1500 |
Volume: | 2 |
Issue: | 7 |
Start page: | 1494 |
End page: | 1500 |
Journal: | ACS Energy Letters |
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. |
ISSN: | 23808195 |
DOI: | 10.1021/acsenergylett.7b00390 |
Rights: | © American Chemical Society |
Type: | Article |
Affiliation : | Imperial College London King Abdullah University of Science and Technology Swansea University Cyprus University of Technology |
Publication Type: | Peer Reviewed |
Appears in Collections: | Άρθρα/Articles |
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