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Real-Space Imaging of the Atomic Structure of Organic–Inorganic Perovskite
Open accessAbstract
Organic-inorganic perovskite is a promising class of materials for photovoltaic applications and light emitting diodes. However, so far commercialization is still impeded by several drawbacks. Atomic-scale effects have been suggested to be possible causes, but an unequivocal experimental view at the atomic level is missing. Here, we present a low-temperature scanning tunneling microscopy study of single crystal methylammonium lead bromide CH3NH3PbBr3. Topographic images of the in situ cleaved perovskite surface reveal the real-space atomic structure. Compared to the bulk we observe modified arrangements of atoms and molecules on the surface. With the support of density functional theory we explain these by surface reconstruction and a substantial interplay of the orientation of the polar organic cations (CH3NH3)(+) with the position of the hosting anions. This leads to structurally and electronically distinct domains with ferroelectric and antiferroelectric character. We further demonstrate local probing of defects, which may also impact device performance.
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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
Cited by
Nenon, D. P., Pressler, K., Kang, J., Koscher, B. A., Olshansky, J. H., Osowiecki, W. T., Koc, M. A., Wang, L.-W., & Alivisatos, A. P. (2018) · Journal of the American Chemical Society · doi:10.1021/jacs.8b11035 · Cited by 631
Progress on Perovskite Materials and Solar Cells with Mixed Cations and Halide Anions
Ono, L. K., Juarez-Perez, E. J., & Qi, Y. (2017) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.7b06001 · Cited by 593
Self-citationDevice stability of perovskite solar cells – A review
Asghar, M. I., Zhang, J., Wang, H., & Lund, P. D. (2017) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2017.04.003 · Cited by 423
Fang, H.-H., Adjokatse, S., Wei, H., Yang, J., Blake, G. R., Huang, J., Even, J., & Loi, M. A. (2016) · Science Advances · doi:10.1126/sciadv.1600534 · Cited by 369
Metadata
- Authors
- Ohmann, R., Ono, L. K., Kim, H.-S., Lin, H., Lee, M. V., Li, Y., Park, N.-G., & Qi, Y.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-12-18
- Volume
- 137
- Issue
- 51
- Pages
- 16049-16054
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2216441014
- Cited by
- 184
- References
- 1
- FWCI
- 7.38
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Ohmann, R., Ono, L. K., Kim, H.-S., Lin, H., Lee, M. V., Li, Y., Park, N.-G., & Qi, Y. (2015). Real-Space Imaging of the Atomic Structure of Organic–Inorganic Perovskite. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.5b08227
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