The DOI matches its Crossref record; 40 of the 40 references it cites were found in a registry or an index.
Kinetics of Ion Transport in Perovskite Active Layers and Its Implications for Active Layer Stability
Open accessAbstract
Solar cells fabricated using alkyl ammonium metal halides as light absorbers have the right combination of high power conversion efficiency and ease of fabrication to realize inexpensive but efficient thin film solar cells. However, they degrade under prolonged exposure to sunlight. Herein, we show that this degradation is quasi-reversible, and that it can be greatly lessened by simple modifications of the solar cell operating conditions. We studied perovskite devices using electrochemical impedance spectroscopy (EIS) with methylammonium (MA)-, formamidinium (FA)-, and MA(x)FA(1-x) lead triiodide as active layers. From variable temperature EIS studies, we found that the diffusion coefficient using MA ions was greater than when using FA ions. Structural studies using powder X-ray diffraction (PXRD) show that for MAPbI3 a structural change and lattice expansion occurs at device operating temperatures. On the basis of EIS and PXRD studies, we postulate that in MAPbI3 the predominant mechanism of accelerated device degradation under sunlight involves thermally activated fast ion transport coupled with a lattice-expanding phase transition, both of which are facilitated by absorption of the infrared component of the solar spectrum. Using these findings, we show that the devices show greatly improved operation lifetimes and stability under white-light emitting diodes, or under a solar simulator with an infrared cutoff filter or with cooling.
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Cites
Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites
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Efficient planar heterojunction perovskite solar cells by vapour deposition
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The emergence of perovskite solar cells
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Solvent engineering for high-performance inorganic–organic hybrid perovskite solar cells
Jeon, N. J., Noh, J. H., Kim, Y. C., Yang, W. S., Ryu, S., & Seok, S. I. (2014) · Nature Materials · doi:10.1038/nmat4014 · Cited by 6,723
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Ionic transport in hybrid lead iodide perovskite solar cells
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Cited by
Impedance Analysis of Electrochemical Systems
Vivier, V., & Orazem, M. E. (2022) · Chemical Reviews · doi:10.1021/acs.chemrev.1c00876 · Cited by 615
From Ultrafast to Ultraslow: Charge-Carrier Dynamics of Perovskite Solar Cells
Shi, J., Li, Y., Li, Y., Li, D., Luo, Y., Wu, H., & Meng, Q. (2018) · Joule · doi:10.1016/j.joule.2018.04.010 · Cited by 341
Imaging Real-Time Amorphization of Hybrid Perovskite Solar Cells under Electrical Biasing
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Zohar, A., Kulbak, M., Turren-Cruz, S. H., Nayak, P. K., Kama, A., Hagfeldt, A., Snaith, H. J., Hodes, G., & Cahen, D. (2022) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.1c08675 · Cited by 10
Metadata
- Authors
- Bag, M., Renna, L. A., Adhikari, R. Y., Karak, S., Liu, F., Lahti, P. M., Russell, T. P., Tuominen, M. T., & Venkataraman, D.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-10-05
- Volume
- 137
- Issue
- 40
- Pages
- 13130-13137
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2329524277
- Cited by
- 499
- References
- 40
- FWCI
- 22.77
- Type
- journal article
- Language
- en
- Open access
- green
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- Bag, M., Renna, L. A., Adhikari, R. Y., Karak, S., Liu, F., Lahti, P. M., Russell, T. P., Tuominen, M. T., & Venkataraman, D. (2015). Kinetics of Ion Transport in Perovskite Active Layers and Its Implications for Active Layer Stability. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.5b08535
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