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Cited by 167

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Energy Level Tuning of Non-Fullerene Acceptors in Organic Solar Cells

Open access
Cnops, Kjell, Zango, German, Genoe, Jan, Heremans, Paul, Martinez-Diaz, M. Victoria, Torres, Tomas, Cheyns, David·2015·Journal of the American Chemical Society

Abstract

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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Crossref · 10.1021/jacs.5b02808

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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
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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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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