The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Extremely Slow Photoconductivity Response of CH3NH3PbI3 Perovskites Suggesting Structural Changes under Working Conditions
Abstract
Photoconductivity measurements of CH3NH3PbI3 deposited between two dielectric-protected Au electrodes show extremely slow response. The CH3NH3PbI3, bridging a gap of ∼2000 nm, was subjected to a DC bias and cycles of 5 min illumination and varying dark duration. The approach to steady -state photocurrent lasted tens of seconds with a strong dependence on the dark duration preceding the illumination. On the basis of DFT calculations, we propose that under light + bias the methylammonium ions are freed to rotate and align along the electric field, thus modifying the structure of the inorganic scaffold. While ions alignment is expected to be fast, the adjustment of the inorganic scaffold seems to last seconds as reflected in the extremely slow photoconductivity response. We propose that under working conditions a modified, photostable, perovskite structure is formed, depending on the bias and illumination parameters. Our findings seem to clarify the origin of the well-known hysteresis in perovskite solar cells.
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Special points for Brillouin-zone integrations
Monkhorst, H. J., & Pack, J. D. (1976) · Physical Review B · doi:10.1103/physrevb.13.5188 · Cited by 71,721
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
Kim, H.-S., Lee, C.-R., Im, J.-H., Lee, K.-B., Moehl, T., Marchioro, A., Moon, S.-J., Humphry-Baker, R., Yum, J.-H., Moser, J. E., et al. (2012) · Scientific Reports · doi:10.1038/srep00591 · Cited by 8,092
Cited by
Reversible photo-induced trap formation in mixed-halide hybrid perovskites for photovoltaics
Hoke, E. T., Slotcavage, D. J., Dohner, E. R., Bowring, A. R., Karunadasa, H. I., & McGehee, M. D. (2015) · Chemical Science · doi:10.1039/c4sc03141e · Cited by 2,295
Defect migration in methylammonium lead iodide and its role in perovskite solar cell operation
Azpiroz, J. M., Mosconi, E., Bisquert, J., & De Angelis, F. (2015) · Energy & Environmental Science · doi:10.1039/c5ee01265a · Cited by 1,644
Self-citationBrenner, T. M., Egger, D. A., Kronik, L., Hodes, G., & Cahen, D. (2016) · Nature Reviews Materials · doi:10.1038/natrevmats.2015.7 · Cited by 1,557
Halide perovskite materials for solar cells: a theoretical review
Yin, W.-J., Yang, J.-H., Kang, J., Yan, Y., & Wei, S.-H. (2015) · Journal of Materials Chemistry A · doi:10.1039/c4ta05033a · Cited by 1,437
Tress, W., Marinova, N., Moehl, T., Zakeeruddin, S. M., Nazeeruddin, M. K., & Grätzel, M. (2015) · Energy & Environmental Science · doi:10.1039/c4ee03664f · Cited by 1,381
Metadata
- Authors
- Gottesman, R., Haltzi, E., Gouda, L., Tirosh, S., Bouhadana, Y., Zaban, A., Mosconi, E., & De Angelis, F.
- Venue
- The Journal of Physical Chemistry Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-07-24
- Volume
- 5
- Issue
- 15
- Pages
- 2662-2669
- ISSN
- 1948-7185 (ISSN-L)
- OpenAlex
- W2013495179
- Cited by
- 333
- References
- 3
- FWCI
- 33.96
- Type
- journal article
- Language
- en
- Open access
- closed
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