The DOI matches its Crossref record; 39 of the 39 references it cites were found in a registry or an index.
Efficient Defect Passivation for Perovskite Solar Cells by Controlling the Electron Density Distribution of Donor‐π‐Acceptor Molecules
Abstract
Organic–inorganic hybrid perovskite solar cells (PSCs) are a promising photovoltaic technology that has rapidly developed in recent years. Nevertheless, a large number of ionic defects within perovskite absorber can serve as non‐radiative recombination center to limit the performance of PSCs. Here, organic donor‐π‐acceptor (D‐π‐A) molecules with different electron density distributions are employed to efficiently passivate the defects in the perovskite films. The X‐ray photoelectron spectroscopy (XPS) analysis shows that the strong electron donating N,N‐dibutylaminophenyl unit in a molecule causes an increase in the electron density of the passivation site that is a carboxylate group, resulting in better binding with the defects of under‐coordinated Pb 2+ cations. Carrier lifetime in the perovskite films measured by the time‐resolved photoluminescence spectrum is also prolonged by an increase in donation ability of the D‐π‐A molecules. As a consequence, these benefits contribute to an increase of 80 mV in the open circuit voltage of the devices, enabling a maximum power conversion efficiency (PCE) of 20.43%, in comparison with PCE of 18.52% for the control device. The authors' findings provide a novel strategy for efficient defect passivation in the perovskite solar cells based on controlling the electronic configuration of passivation molecules.
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Efficient planar heterojunction perovskite solar cells by vapour deposition
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A mixed-cation lead mixed-halide perovskite absorber for tandem solar cells
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Self-citationEfficient and stable solution-processed planar perovskite solar cells via contact passivation
Tan, H., Jain, A., Voznyy, O., Lan, X., García de Arquer, F. P., Fan, J. Z., Quintero-Bermudez, R., Yuan, M., Zhang, B., Zhao, Y., et al. (2017) · Science · doi:10.1126/science.aai9081 · Cited by 2,342
Efficient and stable large-area perovskite solar cells with inorganic charge extraction layers
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Regulating strain in perovskite thin films through charge-transport layers
Xue, D.-J., Hou, Y., Liu, S.-C., Wei, M., Chen, B., Huang, Z., Li, Z., Sun, B., Proppe, A. H., Dong, Y., et al. (2020) · Nature Communications · doi:10.1038/s41467-020-15338-1 · Cited by 678
Dunfield, S. P., Bliss, L., Zhang, F., Luther, J. M., Zhu, K., van Hest, M. F. A. M., Reese, M. O., & Berry, J. J. (2020) · Advanced Energy Materials · doi:10.1002/aenm.201904054 · Cited by 435
Metadata
- Authors
- Wu, T., Wang, Y., Li, X., Wu, Y., Meng, X., Cui, D., Yang, X., & Han, L.
- Venue
- Advanced Energy Materials
- Publisher
- Wiley
- Published
- 2019-03-06
- Volume
- 9
- Issue
- 17
- ISSN
- 1614-6832 (ISSN-L)
- 1614-6840
- OpenAlex
- W2922360715
- Cited by
- 382
- References
- 39
- FWCI
- 19.74
- Type
- journal article
- Language
- en
- Open access
- closed
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- Wu, T., Wang, Y., Li, X., Wu, Y., Meng, X., Cui, D., Yang, X., & Han, L. (2019). Efficient Defect Passivation for Perovskite Solar Cells by Controlling the Electron Density Distribution of Donor‐π‐Acceptor Molecules. Advanced Energy Materials. https://doi.org/10.1002/aenm.201803766
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