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Impact of Layer Thickness on the Charge Carrier and Spin Coherence Lifetime in Two-Dimensional Layered Perovskite Single Crystals
Open accessAbstract
We report the charge carrier recombination rate and spin coherence lifetimes in single crystals of two-dimensional (2D) Ruddlesden–Popper perovskites PEA 2 PbI 4 ·(MAPbI 3 ) n −1 (PEA, phenethylammonium; MA, methylammonium; n = 1, 2, 3, 4). Layer thickness-dependent charge carrier recombination rates are observed, with the fastest rates for n = 1 because of the large exciton binding energy, and the slowest rates are observed for n = 2. Room-temperature spin coherence times also show a nonmonotonic layer thickness dependence with an increasing spin coherence lifetime with increasing layer thickness from n = 1 to n = 4, followed by a decrease in lifetime from n = 4 to ∞. The longest coherence lifetime of ∼7 ps is observed in the n = 4 sample. Our results are consistent with two contributions: Rashba splitting increases the spin coherence lifetime going from the n = ∞ to the layered systems, while phonon scattering, which increases for smaller layers, decreases the spin coherence lifetime. The interplay between these two factors contributes to the layer thickness dependence.
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Optical phonons in methylammonium lead halide perovskites and implications for charge transport
Sendner, M., Nayak, P. K., Egger, D. A., Beck, S., Müller, C., Epding, B., Kowalsky, W., Kronik, L., Snaith, H. J., Pucci, A., et al. (2016) · Materials Horizons · doi:10.1039/c6mh00275g · Cited by 403
Cited by
Spin-dependent charge transport through 2D chiral hybrid lead-iodide perovskites
Lu, H., Wang, J., Xiao, C., Pan, X., Chen, X., Brunecky, R., Berry, J. J., Zhu, K., Beard, M. C., & Vardeny, Z. V. (2019) · Science Advances · doi:10.1126/sciadv.aay0571 · Cited by 533
Self-citationHigh-performance quasi-2D perovskite light-emitting diodes: from materials to devices
Zhang, L., Sun, C., He, T., Jiang, Y., Wei, J., Huang, Y., & Yuan, M. (2021) · Light: Science & Applications · doi:10.1038/s41377-021-00501-0 · Cited by 522
Highly Distorted Chiral Two-Dimensional Tin Iodide Perovskites for Spin Polarized Charge Transport
Lu, H., Xiao, C., Song, R., Li, T., Maughan, A. E., Levin, A., Brunecky, R., Berry, J. J., Mitzi, D. B., Blum, V., et al. (2020) · Journal of the American Chemical Society · doi:10.1021/jacs.0c03899 · Cited by 422
Self-citationTong, J., Jiang, Q., Ferguson, A. J., Palmstrom, A. F., Wang, X., Hao, J., Dunfield, S. P., Louks, A. E., Harvey, S. P., Li, C., et al. (2022) · Nature Energy · doi:10.1038/s41560-022-01046-1 · Cited by 284
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Metadata
- Authors
- Chen, X., Lu, H., Li, Z., Zhai, Y., Ndione, P. F., Berry, J. J., Zhu, K., Yang, Y., & Beard, M. C.
- Venue
- ACS Energy Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-08-28
- Volume
- 3
- Issue
- 9
- Pages
- 2273-2279
- ISSN
- 2380-8195 (ISSN-L)
- OpenAlex
- W2889015665
- Cited by
- 184
- References
- 1
- FWCI
- 7.15
- Type
- journal article
- Language
- en
- Open access
- green
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- Chen, X., Lu, H., Li, Z., Zhai, Y., Ndione, P. F., Berry, J. J., Zhu, K., Yang, Y., & Beard, M. C. (2018). Impact of Layer Thickness on the Charge Carrier and Spin Coherence Lifetime in Two-Dimensional Layered Perovskite Single Crystals. ACS Energy Letters. https://doi.org/10.1021/acsenergylett.8b01315
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