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Enhancing the Performance of Inverted Perovskite Solar Cells via Grain Boundary Passivation with Carbon Quantum Dots
Abstract
), is one of the crucial problems for achieving high power conversion efficiency (PCE) in inverted perovskite solar cells (PSCs). Usually, grain boundary passivation is considered as an effective way to reduce nonradiative recombination because the defects (uncoordinated ions) on grain boundaries are passivated. We added the hydroxyl and carbonyl functional groups containing carbon quantum dots (CQDs) into a perovskite precursor solution to passivate the uncoordinated lead ions on grain boundaries. Higher photoluminescence intensity and longer carrier lifetime were demonstrated in the perovskite film with the CQD additive. This confirmed that the addition of CQDs can reduce nonradiative recombination by grain boundary passivation. Additionally, the introduction of CQDs could increase the thickness of the perovskite film. Consequently, we achieved a champion device with a PCE of 18.24%. The device with CQDs retained 73.4% of its initial PCE after being aged for 48 h under 80% humidity in the dark at room temperature. Our findings reveal the mechanisms of how CQDs passivate the grain boundaries of perovskite, which can improve the efficiency and stability of PSCs.
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Citations
Cites
Impact of microstructure on local carrier lifetime in perovskite solar cells
de Quilettes, D. W., Vorpahl, S. M., Stranks, S. D., Nagaoka, H., Eperon, G. E., Ziffer, M. E., Snaith, H. J., & Ginger, D. S. (2015) · Science · doi:10.1126/science.aaa5333 · Cited by 2,198
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A review of aspects of additive engineering in perovskite solar cells
Mahapatra, A., Prochowicz, D., Tavakoli, M. M., Trivedi, S., Kumar, P., & Yadav, P. (2020) · Journal of Materials Chemistry A · doi:10.1039/c9ta07657c · Cited by 369
Carbon-based materials for stable, cheaper and large-scale processable perovskite solar cells
Fagiolari, L., & Bella, F. (2019) · Energy & Environmental Science · doi:10.1039/c9ee02115a · Cited by 355
Metadata
- Authors
- Ma, Y., Zhang, H., Zhang, Y., Hu, R., Jiang, M., Zhang, R., Lv, H., Tian, J., Chu, L., Zhang, J., Xue, Q., Yip, H.-L., Xia, R., Li, X., & Huang, W.
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-12-26
- Volume
- 11
- Issue
- 3
- Pages
- 3044-3052
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W2906599967
- Cited by
- 187
- References
- 1
- FWCI
- 7.62
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ma, Y., Zhang, H., Zhang, Y., Hu, R., Jiang, M., Zhang, R., Lv, H., Tian, J., Chu, L., Zhang, J., Xue, Q., Yip, H.-L., Xia, R., Li, X., & Huang, W. (2019). Enhancing the Performance of Inverted Perovskite Solar Cells via Grain Boundary Passivation with Carbon Quantum Dots. ACS Applied Materials & Interfaces. https://doi.org/10.1021/acsami.8b18867
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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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