The DOI matches its Crossref record; 41 of the 41 references it cites were found in a registry or an index.
High Electron Affinity Enables Fast Hole Extraction for Efficient Flexible Inverted Perovskite Solar Cells
Abstract
Inverted perovskite solar cells (PSCs) with low‐temperature processed hole transporting materials (HTMs) suffer from poor performance due to the inferior hole‐extraction capability at the HTM/perovskite interfaces. Here, molecules with controlled electron affinity enable a HTM with conductivity improved by more than ten times and a decreased energy gap between the Fermi level and the valence band from 0.60 to 0.24 eV, leading to the enhancement of hole‐extraction capacity by five times. As a result, the 3,6‐difluoro‐2,5,7,7,8,8‐hexacyanoquinodimethane molecules are used for the first time enhancing open‐circuit voltage (Voc) and fill factor (FF) of the PSCs, which enable rigid‐and flexible‐based inverted perovskite devices achieving highest power conversion efficiencies of 22.13% and 20.01%, respectively. This new method significantly enhances the Voc and FF of the PSCs, which can be widely combined with HTMs based on not only NiOx but also PTAA, PEDOTT:PSS, and CuSCN, providing a new way of realizing efficient inverted PSCs.
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Cites
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Self-citationEfficient and stable solution-processed planar perovskite solar cells via contact passivation
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Cited by
Cao, Q., Li, Y., Zhang, H., Yang, J., Han, J., Xu, T., Wang, S., Wang, Z., Gao, B., Zhao, J., et al. (2021) · Science Advances · doi:10.1126/sciadv.abg0633 · Cited by 322
Metadata
- Authors
- Ru, P., Bi, E., Zhang, Y., Wang, Y., Kong, W., Sha, Y., Tang, W., Zhang, P., Wu, Y., Chen, W., Yang, X., Chen, H., & Han, L.
- Venue
- Advanced Energy Materials
- Publisher
- Wiley
- Published
- 2020-01-30
- Volume
- 10
- Issue
- 12
- ISSN
- 1614-6832 (ISSN-L)
- 1614-6840
- OpenAlex
- W3003718517
- Cited by
- 298
- References
- 41
- FWCI
- 17.30
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ru, P., Bi, E., Zhang, Y., Wang, Y., Kong, W., Sha, Y., Tang, W., Zhang, P., Wu, Y., Chen, W., Yang, X., Chen, H., & Han, L. (2020). High Electron Affinity Enables Fast Hole Extraction for Efficient Flexible Inverted Perovskite Solar Cells. Advanced Energy Materials. https://doi.org/10.1002/aenm.201903487
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