The DOI matches its Crossref record; 25 of the 25 references it cites were found in a registry or an index.
Improved Phase Stability of Formamidinium Lead Triiodide Perovskite by Strain Relaxation
Abstract
Though formamidinium lead triiodide (FAPbI 3 ) possesses a suitable band gap and good thermal stability, the phase transition from the pure black perovskite phase (α-phase) to the undesirable yellow nonperovskite polymorph (δ-phase) at room temperature, especially under humid air, hinders its practical application. Here, we investigate the intrinsic instability mechanism of the α-phase at ambient temperature and demonstrate the existence of an anisotropic strained lattice in the (111) plane that drives phase transformation into the δ-phase. Methylammonium bromide (MABr) alloying (or FAPbI 3 -MABr) was found to cause lattice contraction, thereby balancing the lattice strain. This led to dramatic improvement in the stability of α-FAPbI 3 . Solar cells fabricated using FAPbI 3 -MABr demonstrated significantly enhanced stability under the humid air.
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Cites
X-ray line broadening from filed aluminium and wolfram
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Solvent engineering for high-performance inorganic–organic hybrid perovskite solar cells
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Compositional engineering of perovskite materials for high-performance solar cells
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High-performance photovoltaic perovskite layers fabricated through intramolecular exchange
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Low trap-state density and long carrier diffusion in organolead trihalide perovskite single crystals
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Self-citationIntrinsic Thermal Instability of Methylammonium Lead Trihalide Perovskite
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Formamidinium and Cesium Hybridization for Photo‐ and Moisture‐Stable Perovskite Solar Cell
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Cited by
Metal-Doped Lead Halide Perovskites: Synthesis, Properties, and Optoelectronic Applications
Zhou, Y., Chen, J., Bakr, O. M., & Sun, H.-T. (2018) · Chemistry of Materials · doi:10.1021/acs.chemmater.8b02989 · Cited by 650
Yin, J., Teobaldi, G., & Liu, L.-M. (2022) · The Journal of Physical Chemistry Letters · doi:10.1021/acs.jpclett.2c00454 · Cited by 18
Metadata
- Authors
- Zheng, X., Wu, C., Jha, S. K., Li, Z., Zhu, K., & Priya, S.
- Venue
- ACS Energy Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-10-24
- Volume
- 1
- Issue
- 5
- Pages
- 1014-1020
- ISSN
- 2380-8195 (ISSN-L)
- OpenAlex
- W2537364077
- Cited by
- 474
- References
- 25
- FWCI
- 12.96
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zheng, X., Wu, C., Jha, S. K., Li, Z., Zhu, K., & Priya, S. (2016). Improved Phase Stability of Formamidinium Lead Triiodide Perovskite by Strain Relaxation. ACS Energy Letters. https://doi.org/10.1021/acsenergylett.6b00457
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