The DOI matches its Crossref record; 46 of the 46 references it cites were found in a registry or an index.
Delocalization of exciton and electron wavefunction in non-fullerene acceptor molecules enables efficient organic solar cells
Open accessAbstract
A major challenge for organic solar cell (OSC) research is how to minimize the tradeoff between voltage loss and charge generation. In early 2019, we reported a non-fullerene acceptor (named Y6) that can simultaneously achieve high external quantum efficiency and low voltage loss for OSC. Here, we use a combination of experimental and theoretical modeling to reveal the structure-property-performance relationships of this state-of-the-art OSC system. We find that the distinctive π–π molecular packing of Y6 not only exists in molecular single crystals but also in thin films. Importantly, such molecular packing leads to (i) the formation of delocalized and emissive excitons that enable small non-radiative voltage loss, and (ii) delocalization of electron wavefunctions at donor/acceptor interfaces that significantly reduces the Coulomb attraction between interfacial electron-hole pairs. These properties are critical in enabling highly efficient charge generation in OSC systems with negligible donor-acceptor energy offset.
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Cited by
Renewed Prospects for Organic Photovoltaics
Zhang, G., Lin, F. R., Qi, F., Heumüller, T., Distler, A., Egelhaaf, H.-J., Li, N., Chow, P. C. Y., Brabec, C. J., Jen, A. K.-Y., et al. (2022) · Chemical Reviews · doi:10.1021/acs.chemrev.1c00955 · Cited by 1,052
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Metadata
- Authors
- Zhang, G., Chen, X.-K., Xiao, J., Chow, P. C. Y., Ren, M., Kupgan, G., Jiao, X., Chan, C. C. S., Du, X., Xia, R., Chen, Z., Yuan, J., Zhang, Y., Zhang, S., Liu, Y., Zou, Y., Yan, H., Wong, K. S., Coropceanu, V., Li, N., Brabec, C. J., Bredas, J.-L., Yip, H.-L., & Cao, Y.
- Venue
- Nature Communications
- Published
- 2020-08-07
- Volume
- 11
- Issue
- 1
- Pages
- 3943-3943
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W3047886418
- Cited by
- 721
- References
- 46
- FWCI
- 34.69
- Type
- journal article
- Language
- en
- Open access
- gold
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- Zhang, G., Chen, X.-K., Xiao, J., Chow, P. C. Y., Ren, M., Kupgan, G., Jiao, X., Chan, C. C. S., Du, X., Xia, R., Chen, Z., Yuan, J., Zhang, Y., Zhang, S., Liu, Y., Zou, Y., Yan, H., Wong, K. S., Coropceanu, V., . . . Cao, Y. (2020). Delocalization of exciton and electron wavefunction in non-fullerene acceptor molecules enables efficient organic solar cells. Nature Communications. https://doi.org/10.1038/s41467-020-17867-1
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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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