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Efficiency Enhancement of Perovskite Solar Cells through Fast Electron Extraction: The Role of Graphene Quantum Dots
Abstract
We report on a significant power conversion efficiency improvement of perovskite solar cells from 8.81% to 10.15% due to insertion of an ultrathin graphene quantum dots (GQDs) layer between perovskite and TiO2. A strong quenching of perovskite photoluminescence was observed at ∼760 nm upon the addition of the GQDs, which is pronouncedly correlated with the increase of the IPCE and the APCE of the respective cells. From the transient absorption measurements, the improved cell efficiency can be attributed to the much faster electron extraction with the presence of GQDs (90-106 ps) than without their presence (260-307 ps). This work highlights that GQDs can act as a superfast electron tunnel for optoelectronic devices.
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Opportunities and challenges for a sustainable energy future
Chu, S., & Majumdar, A. (2012) · Nature · doi:10.1038/nature11475 · Cited by 12,550
Stranks, S. D., Eperon, G. E., Grancini, G., Menelaou, C., Alcocer, M. J. P., Leijtens, T., Herz, L. M., Petrozza, A., & Snaith, H. J. (2013) · Science · doi:10.1126/science.1243982 · Cited by 10,413
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Self-citationHybrid nanostructures based on titanium dioxide for enhanced photocatalysis
Reddy, K. R., Hassan, M., & Gomes, V. G. (2015) · Applied Catalysis A: General · doi:10.1016/j.apcata.2014.10.001 · Cited by 696
Zuo, L., Gu, Z., Ye, T., Fu, W., Wu, G., Li, H., & Chen, H. (2015) · Journal of the American Chemical Society · doi:10.1021/ja512518r · Cited by 676
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Sun, Z., Fang, S., & Hu, Y. H. (2020) · Chemical Reviews · doi:10.1021/acs.chemrev.0c00083 · Cited by 543
Zhu, Z., Bai, Y., Liu, X., Chueh, C., Yang, S., & Jen, A. K. ‐. (2016) · Advanced Materials · doi:10.1002/adma.201600619 · Cited by 499
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Metadata
- Authors
- Zhu, Z., Ma, J., Wang, Z., Mu, C., Fan, Z., Du, L., Bai, Y., Fan, L., Yan, H., Phillips, D. L., & Yang, S.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-02-25
- Volume
- 136
- Issue
- 10
- Pages
- 3760-3763
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2011367526
- Cited by
- 782
- References
- 2
- FWCI
- 44.75
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhu, Z., Ma, J., Wang, Z., Mu, C., Fan, Z., Du, L., Bai, Y., Fan, L., Yan, H., Phillips, D. L., & Yang, S. (2014). Efficiency Enhancement of Perovskite Solar Cells through Fast Electron Extraction: The Role of Graphene Quantum Dots. Journal of the American Chemical Society. https://doi.org/10.1021/ja4132246
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