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Improving the Long-Term Stability of Perovskite Solar Cells with a Porous Al2O3 Buffer Layer
Open accessAbstract
Hybrid perovskites represent a new paradigm for photovoltaics, which have the potential to overcome the performance limits of current technologies and achieve low cost and high versatility. However, an efficiency drop is often observed within the first few hundred hours of device operation, which could become an important issue. Here, we demonstrate that the electrode's metal migrating through the hole transporting material (HTM) layer and eventually contacting the perovskite is in part responsible for this early device degradation. We show that depositing the HTM within an insulating mesoporous "buffer layer" comprised of Al2O3 nanoparticles prevents the metal electrode migration while allowing for precise control of the HTM thickness. This enables an improvement in the solar cell fill factor and prevents degradation of the device after 350 h of operation.
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A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films
O'Regan, B., & Grätzel, M. (1991) · Nature · doi:10.1038/353737a0 · Cited by 28,599
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A Review of Perovskites Solar Cell Stability
Wang, R., Mujahid, M., Duan, Y., Wang, Z., Xue, J., & Yang, Y. (2019) · Advanced Functional Materials · doi:10.1002/adfm.201808843 · Cited by 1,310
Stability of Metal Halide Perovskite Solar Cells
Leijtens, T., Eperon, G. E., Noel, N. K., Habisreutinger, S. N., Petrozza, A., & Snaith, H. J. (2015) · Advanced Energy Materials · doi:10.1002/aenm.201500963 · Cited by 1,308
Self-citationWei, Y., Cheng, Z., & Lin, J. (2019) · Chemical Society Reviews · doi:10.1039/c8cs00740c · Cited by 1,206
Colloidally prepared La-doped BaSnO 3 electrodes for efficient, photostable perovskite solar cells
Shin, S. S., Yeom, E. J., Yang, W. S., Hur, S., Kim, M. G., Im, J., Seo, J., Noh, J. H., & Seok, S. I. (2017) · Science · doi:10.1126/science.aam6620 · Cited by 1,163
Recent progress in electron transport layers for efficient perovskite solar cells
Yang, G., Tao, H., Qin, P., Ke, W., & Fang, G. (2016) · Journal of Materials Chemistry A · doi:10.1039/c5ta09011c · Cited by 579
Metadata
- Authors
- Guarnera, S., Abate, A., Zhang, W., Foster, J. M., Richardson, G., Petrozza, A., & Snaith, H. J.
- Venue
- The Journal of Physical Chemistry Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-01-20
- Volume
- 6
- Issue
- 3
- Pages
- 432-437
- ISSN
- 1948-7185 (ISSN-L)
- OpenAlex
- W2068085953
- Cited by
- 381
- References
- 2
- FWCI
- 29.67
- Type
- journal article
- Language
- en
- Open access
- green
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- Guarnera, S., Abate, A., Zhang, W., Foster, J. M., Richardson, G., Petrozza, A., & Snaith, H. J. (2015). Improving the Long-Term Stability of Perovskite Solar Cells with a Porous Al2O3 Buffer Layer. The Journal of Physical Chemistry Letters. https://doi.org/10.1021/jz502703p
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