The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.
Boosting Power Conversion Efficiencies of Quantum-Dot-Sensitized Solar Cells Beyond 8% by Recombination Control
Abstract
At present, quantum-dot-sensitized solar cells (QDSCs) still exhibit moderate power conversion efficiency (with record efficiency of 6-7%), limited primarily by charge recombination. Therefore, suppressing recombination processes is a mandatory requirement to boost the performance of QDSCs. Herein, we demonstrate the ability of a novel sequential inorganic ZnS/SiO2 double layer treatment onto the QD-sensitized photoanode for strongly inhibiting interfacial recombination processes in QDSCs while providing improved cell stability. Theoretical modeling and impedance spectroscopy reveal that the combined ZnS/SiO2 treatment reduces interfacial recombination and increases charge collection efficiency when compared with conventional ZnS treatment alone. In line with those results, subpicosecond THz spectroscopy demonstrates that while QD to TiO2 electron-transfer rates and yields are insensitive to inorganic photoanode overcoating, back recombination at the oxide surface is strongly suppressed by subsequent inorganic treatments. By exploiting this approach, CdSe(x)Te(1-x) QDSCs exhibit a certified record efficiency of 8.21% (8.55% for a champion cell), an improvement of 20% over the previous record high efficiency of 6.8%, together with an additional beneficial effect of improved cell stability.
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Cites
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Hybrid passivated colloidal quantum dot solids
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Quantum‐Dot‐Sensitized Solar Cells
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Cited by
Phosphorene and Phosphorene‐Based Materials – Prospects for Future Applications
Batmunkh, M., Bat‐Erdene, M., & Shapter, J. G. (2016) · Advanced Materials · doi:10.1002/adma.201602254 · Cited by 494
Designed Assembly and Integration of Colloidal Nanocrystals for Device Applications
Yang, J., Choi, M. K., Kim, D., & Hyeon, T. (2016) · Advanced Materials · doi:10.1002/adma.201502851 · Cited by 256
Metadata
- Authors
- Zhao, K., Pan, Z., Mora-Seró, I., Cánovas, E., Wang, H., Song, Y., Gong, X., Wang, J., Bonn, M., Bisquert, J., & Zhong, X.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-04-16
- Volume
- 137
- Issue
- 16
- Pages
- 5602-5609
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2087754216
- Cited by
- 395
- References
- 38
- FWCI
- 34.24
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhao, K., Pan, Z., Mora-Seró, I., Cánovas, E., Wang, H., Song, Y., Gong, X., Wang, J., Bonn, M., Bisquert, J., & Zhong, X. (2015). Boosting Power Conversion Efficiencies of Quantum-Dot-Sensitized Solar Cells Beyond 8% by Recombination Control. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.5b01946
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