The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.
Observation of Internal Photoinduced Electron and Hole Separation in Hybrid Two-Dimentional Perovskite Films
Abstract
Two-dimensional (2D) organolead halide perovskites are promising for various optoelectronic applications. Here we report a unique spontaneous charge (electron/hole) separation property in multilayered (BA) 2 (MA) n −1 Pb n I 3 n +1 (BA = CH 3 (CH 2 ) 3 NH 3 +, MA = CH 3 NH 3 + ) 2D perovskite films by studying the charge carrier dynamics using ultrafast transient absorption and photoluminescence spectroscopy. Surprisingly, the 2D perovskite films, although nominally prepared as “ n = 4”, are found to be mixture of multiple perovskite phases, with n = 2, 3, 4 and ≈ ∞, that naturally align in the order of n along the direction perpendicular to the substrate. Driven by the band alignment between 2D perovskites phases, we observe consecutive photoinduced electron transfer from small- n to large- n phases and hole transfer in the opposite direction on hundreds of picoseconds inside the 2D film of ∼358 nm thickness. This internal charge transfer efficiently separates electrons and holes to the upper and bottom surfaces of the films, which is a unique property beneficial for applications in photovoltaics and other optoelectronics devices.
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High-efficiency two-dimensional Ruddlesden–Popper perovskite solar cells
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Perovskite energy funnels for efficient light-emitting diodes
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2D Homologous Perovskites as Light-Absorbing Materials for Solar Cell Applications
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A Layered Hybrid Perovskite Solar‐Cell Absorber with Enhanced Moisture Stability
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Intrinsic White-Light Emission from Layered Hybrid Perovskites
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Trap States in Lead Iodide Perovskites
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Cited by
Fu, Y., Zhu, H., Chen, J., Hautzinger, M. P., Zhu, X.-Y., & Jin, S. (2019) · Nature Reviews Materials · doi:10.1038/s41578-019-0080-9 · Cited by 934
Self-citation2D Ruddlesden–Popper Perovskites for Optoelectronics
Chen, Y., Sun, Y., Peng, J., Tang, J., Zheng, K., & Liang, Z. (2018) · Advanced Materials · doi:10.1002/adma.201703487 · Cited by 892
Tuning the Luminescence of Layered Halide Perovskites
Smith, M. D., Connor, B. A., & Karunadasa, H. I. (2019) · Chemical Reviews · doi:10.1021/acs.chemrev.8b00477 · Cited by 802
Color-stable highly luminescent sky-blue perovskite light-emitting diodes
Xing, J., Zhao, Y., Askerka, M., Quan, L. N., Gong, X., Zhao, W., Zhao, J., Tan, H., Long, G., Gao, L., et al. (2018) · Nature Communications · doi:10.1038/s41467-018-05909-8 · Cited by 720
Dion-Jacobson Phase 2D Layered Perovskites for Solar Cells with Ultrahigh Stability
Ahmad, S., Fu, P., Yu, S., Yang, Q., Liu, X., Wang, X., Wang, X., Guo, X., & Li, C. (2019) · Joule · doi:10.1016/j.joule.2018.11.026 · Cited by 615
Metadata
- Authors
- Liu, J., Leng, J., Wu, K., Zhang, J., & Jin, S.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-01-19
- Volume
- 139
- Issue
- 4
- Pages
- 1432-1435
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2577160092
- Cited by
- 566
- References
- 27
- FWCI
- 27.41
- Type
- journal article
- Language
- en
- Open access
- closed
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