The DOI matches its Crossref record; 50 of the 50 references it cites were found in a registry or an index.
Iodine Migration and Degradation of Perovskite Solar Cells Enhanced by Metallic Electrodes
Abstract
We monitored the evolution in time of pinhole-free structures based on FTO/TiO 2 /CH 3 NH 3 PbI 2.6 Cl 0.4 layers, with and without spiro-OMeTAD and counter electrodes (Ag, Mo/Ag, and Au), aged at 24 °C in a dark nitrogen atmosphere. In the absence of electrodes, no degradation occurs. While devices with Au show only a 10% drop in power conversion efficiency, remaining stable after a further overheating at 70 °C, >90% is lost when using Ag, with the process being slower for Mo/Ag. We demonstrate that iodine is dislocated by the electric field between the electrodes, and this is an intrinsic cause for electromigration of I – from the perovskite until it reaches the anode. The iodine exhaustion in the perovskite layer is produced when using Ag electrodes, and AgI is formed. We hypothesize that in the presence of Au the iodine migration is limited due to the buildup of I – negative space charge accumulated at the perovskite–OMeTAD interface.
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Cites
Sequential deposition as a route to high-performance perovskite-sensitized solar cells
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Perovskites for Next-Generation Optical Sources
Quan, L. N., Rand, B. P., Friend, R. H., Mhaisalkar, S. G., Lee, T.-W., & Sargent, E. H. (2019) · Chemical Reviews · doi:10.1021/acs.chemrev.9b00107 · Cited by 983
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The Role of the Interfaces in Perovskite Solar Cells
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Improving the Stability of Metal Halide Perovskite Materials and Light‐Emitting Diodes
Cho, H., Kim, Y., Wolf, C., Lee, H., & Lee, T. (2018) · Advanced Materials · doi:10.1002/adma.201704587 · Cited by 470
Halide Perovskites: A New Era of Solution‐Processed Electronics
Younis, A., Lin, C., Guan, X., Shahrokhi, S., Huang, C., Wang, Y., He, T., Singh, S., Hu, L., Retamal, J. R. D., et al. (2021) · Advanced Materials · doi:10.1002/adma.202005000 · Cited by 282
Metadata
- Authors
- Besleaga, C., Abramiuc, L. E., Stancu, V., Tomulescu, A. G., Sima, M., Trinca, L., Plugaru, N., Pintilie, L., Nemnes, G. A., Iliescu, M., Svavarsson, H. G., Manolescu, A., & Pintilie, I.
- Venue
- The Journal of Physical Chemistry Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-12-02
- Volume
- 7
- Issue
- 24
- Pages
- 5168-5175
- ISSN
- 1948-7185 (ISSN-L)
- OpenAlex
- W2558455290
- Cited by
- 305
- References
- 50
- FWCI
- 11.13
- Type
- journal article
- Language
- en
- Open access
- closed
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- Besleaga, C., Abramiuc, L. E., Stancu, V., Tomulescu, A. G., Sima, M., Trinca, L., Plugaru, N., Pintilie, L., Nemnes, G. A., Iliescu, M., Svavarsson, H. G., Manolescu, A., & Pintilie, I. (2016). Iodine Migration and Degradation of Perovskite Solar Cells Enhanced by Metallic Electrodes. The Journal of Physical Chemistry Letters. https://doi.org/10.1021/acs.jpclett.6b02375
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