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Energy Level Tuning of Non-Fullerene Acceptors in Organic Solar Cells
Open accessAbstract
The use of non-fullerene acceptors in organic photovoltaic (OPV) devices could lead to enhanced efficiencies due to increased open-circuit voltage (VOC) and improved absorption of solar light. Here we systematically investigate planar heterojunction devices comprising peripherally substituted subphthalocyanines as acceptors and correlate the device performance with the heterojunction energetics. As a result of a balance between VOC and the photocurrent, tuning of the interface energy gap is necessary to optimize the power conversion efficiency in these devices. In addition, we explore the role of the charge transport layers in the device architecture. It is found that non-fullerene acceptors require adjusted buffer layers with aligned electron transport levels to enable efficient charge extraction, while the insertion of an exciton-blocking layer at the anode interface further boosts photocurrent generation. These adjustments result in a planar-heterojunction OPV device with an efficiency of 6.9% and a VOC above 1 V.
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Small molecule semiconductors for high-efficiency organic photovoltaics
Lin, Y., Li, Y., & Zhan, X. (2012) · Chemical Society Reviews · doi:10.1039/c2cs15313k · Cited by 1,751
Cited by
Li, S., Ye, L., Zhao, W., Zhang, S., Mukherjee, S., Ade, H., & Hou, J. (2016) · Advanced Materials · doi:10.1002/adma.201602776 · Cited by 1,380
Wadsworth, A., Moser, M., Marks, A., Little, M. S., Gasparini, N., Brabec, C. J., Baran, D., & McCulloch, I. (2019) · Chemical Society Reviews · doi:10.1039/c7cs00892a · Cited by 986
Metadata
- Authors
- Cnops, K., Zango, G., Genoe, J., Heremans, P., Martinez-Diaz, M. V., Torres, T., & Cheyns, D.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-07-10
- Volume
- 137
- Issue
- 28
- Pages
- 8991-8997
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2409617880
- Cited by
- 167
- References
- 1
- FWCI
- 10.75
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Cnops, K., Zango, G., Genoe, J., Heremans, P., Martinez-Diaz, M. V., Torres, T., & Cheyns, D. (2015). Energy Level Tuning of Non-Fullerene Acceptors in Organic Solar Cells. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.5b02808
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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