Kojima, A., Teshima, K., Shirai, Y. & Miyasaka, T. Organometal halide perovskites as visible-light sensitizers for photovoltaic cells. J. Am. Chem. Soc. 131, 6050–6051 (2009).

Article  CAS  PubMed  Google Scholar 

Koh, T. M. et al. Formamidinium-containing metal-halide: an alternative material for near-IR absorption perovskite solar cells. J. Phys. Chem. C 118, 16458–16462 (2014). One of the earliest studies of FAPbI3in halide perovskite photovoltaic cells.

Article  CAS  Google Scholar 

Eperon, G. E. et al. Formamidinium lead trihalide: a broadly tunable perovskite for efficient planar heterojunction solar cells. Energy Environ. Sci. 7, 982–988 (2014).

Article  CAS  Google Scholar 

Liu, Z. et al. Efficient and stable FA‐rich perovskite photovoltaics: from material properties to device optimization. Adv. Energy Mater. 12, 2200111 (2022).

Article  CAS  Google Scholar 

Min, H. et al. Perovskite solar cells with atomically coherent interlayers on SnO2 electrodes. Nature 598, 444–450 (2021).

Article  CAS  PubMed  Google Scholar 

Best research-cell efficiency chart. National Renewable Energy Laboratory https://www.nrel.gov/pv/assets/pdfs/best-research-cell-efficiencies.pdf (2022).

Ding, Y. et al. Single-crystalline TiO2 nanoparticles for stable and efficient perovskite modules. Nat. Nanotechnol. 17, 598–605 (2022).

Article  CAS  PubMed  Google Scholar 

Wang, R. et al. Prospects for metal halide perovskite-based tandem solar cells. Nat. Photon. 15, 411–425 (2021).

Article  CAS  Google Scholar 

Chen, T. et al. Entropy-driven structural transition and kinetic trapping in formamidinium lead iodide perovskite. Sci. Adv. 2, e1601650 (2016). A detailed study of the thermodynamic and kinetic mechanisms of the FAPbI3phase transition.

Article  PubMed  PubMed Central  Google Scholar 

Hoke, E. T. et al. Reversible photo-induced trap formation in mixed-halide hybrid perovskites for photovoltaics. Chem. Sci. 6, 613–617 (2015). One of the first reports of the light-induced phase segregation and its reversibility in mixed halide perovskites.

Article  CAS  PubMed  Google Scholar 

Li, Z. et al. Stabilizing perovskite structures by tuning tolerance factor: formation of formamidinium and cesium lead Iodide solid-state alloys. Chem. Mater. 28, 284–292 (2015). Demonstration of the relationship between perovskite component alloying and Goldschmidt tolerance factor, phase transition temperature, system free energy and perovskite film stability.

Article  Google Scholar 

Macpherson, S. et al. Local nanoscale phase impurities are degradation sites in halide perovskites. Nature 607, 294–300 (2022). An excellent example illustrating the impact of phase purity on the stability of perovskites.

Article  CAS  PubMed  Google Scholar 

Saliba, M. et al. Cesium-containing triple cation perovskite solar cells: improved stability, reproducibility and high efficiency. Energy Environ. Sci. 9, 1989–1997 (2016).

Article  CAS  PubMed  PubMed Central  Google Scholar 

Fu, C. et al. From structural design to functional construction: amine molecules in high‐performance formamidinium‐based perovskite solar cells. Angew. Chem. Int. Ed. 134, e202117067 (2022).

Article  Google Scholar 

Saliba, M. et al. Incorporation of rubidium cations into perovskite solar cells improves photovoltaic performance. Science 354, 206–209 (2016).

Article  CAS  PubMed  Google Scholar 

Draguta, S. et al. Rationalizing the light-induced phase separation of mixed halide organic–inorganic perovskites. Nat. Commun. 8, 200 (2017).

Article  PubMed  PubMed Central  Google Scholar 

Hui, W. et al. Stabilizing black-phase formamidinium perovskite formation at room temperature and high humidity. Science 371, 1359–1364 (2021).

Article  CAS  PubMed  Google Scholar 

Kim, M. et al. Methylammonium chloride induces intermediate phase stabilization for efficient perovskite solar cells. Joule 3, 2179–2192 (2019).

Article  CAS  Google Scholar 

Xiang, W. et al. Intermediate phase engineering of halide perovskites for photovoltaics. Joule 6, 315–339 (2022).

Article  CAS  Google Scholar 

Lee, J.-W. et al. Solid-phase hetero epitaxial growth of α-phase formamidinium perovskite. Nat. Commun. 11, 5514 (2020).

Article  CAS  PubMed  PubMed Central  Google Scholar 

Mei, A. et al. Stabilizing perovskite solar cells to IEC61215:2016 standards with over 9000-h operational tracking. Joule 4, 2646–2660 (2020).

Article  CAS  Google Scholar 

Holzhey, P. & Saliba, M. A full overview of international standards assessing the long-term stability of perovskite solar cells. J. Mater. Chem. A 6, 21794–21808 (2018).

Article  CAS  Google Scholar 

Shockley, W. & Queisser, H. J. Detailed balance limit of efficiency of p–n junction solar cells. J. Appl. Phys. 32, 510–519 (1961).

Article  CAS  Google Scholar 

Wang, K. et al. Isothermally crystallized perovskites at room-temperature. Energy Environ. Sci. 13, 3412–3422 (2020).

Article  CAS  Google Scholar 

Xiang, W., Liu, S. & Tress, W. A review on the stability of inorganic metal halide perovskites: challenges and opportunities for stable solar cells. Energy Environ. Sci. 14, 2090–2113 (2021).

Article  CAS  Google Scholar 

Hao, F., Stoumpos, C. C., Chang, R. P. & Kanatzidis, M. G. Anomalous band gap behavior in mixed Sn and Pb perovskites enables broadening of absorption spectrum in solar cells. J. Am. Chem. Soc. 136, 8094–8099 (2014).

Article  CAS  PubMed  Google Scholar 

Jena, A. K., Kulkarni, A. & Miyasaka, T. Halide perovskite photovoltaics: background, status, and future prospects. Chem. Rev. 119, 3036–3103 (2019).

Article  CAS  PubMed  Google Scholar 

Qiu, Z., Li, N., Huang, Z., Chen, Q. & Zhou, H. Recent advances in improving phase stability of perovskite solar cells. Small Methods 4, 1900877 (2020).

Article  CAS  Google Scholar 

Huang, T. et al. Performance-limiting formation dynamics in mixed-halide perovskites. Sci. Adv. 7, eabj1799 (2021).

Article  CAS  PubMed  PubMed Central  Google Scholar 

Mao, W. et al. Light-induced reversal of ion segregation in mixed-halide perovskites. Nat. Mater. 20, 55–61 (2020).

Article  PubMed  Google Scholar 

Min, H. et al. Efficient, stable solar cells by using inherent bandgap of α-phase formamidinium lead iodide. Science 366, 749–753 (2019).

Article  CAS  PubMed  Google Scholar 

Jeong, J. et al. Pseudo-halide anion engineering for α-FAPbI3 perovskite solar cells. Nature 592, 381–385 (2021).

Article  CAS  PubMed  Google Scholar 

Pellet, N. et al. Mixed-organic-cation perovskite photovoltaics for enhanced solar-light harvesting. Angew. Chem. Int. Ed. 53, 3151–3157 (2014).

Article  CAS  Google Scholar 

Kubicki, D. J. et al. Cation dynamics in mixed-cation (MA)x(FA)1−xPbI3 hybrid perovskites from solid-state NMR. J. Am. Chem. Soc. 139, 10055–10061 (2017).

Article  CAS  PubMed  Google Scholar 

Zhu, H. et al. Screening in crystalline liquids protects energetic carriers in hybrid perovskites. Science 353, 1409–1413 (2016).

Article  CAS  PubMed  Google Scholar 

Zhu, H. et al. Organic cations might not be essential to the remarkable properties of band edge carriers in lead halide perovskites. Adv. Mater. 29, 1603072 (2017).

Article  Google Scholar 

Ceratti, D. R. et al. Eppur si muove: proton diffusion in halide perovskite single crystals. Adv. Mater. 32, 2002467 (2020).

Article  CAS  Google Scholar 

Sadhu, S., Buffeteau, T., Sandrez, S., Hirsch, L. & Bassani, D. M. Observing the migration of hydrogen species in hybrid perovskite materials through D/H isotope exchange. J. Am. Chem. Soc. 142, 10431–10437 (2020).

Article  CAS  PubMed  Google Scholar 

Lee, J. W., Tan, S., Seok, S. I., Yang, Y. & Park, N. G. Rethinking the A cation in halide perovskites. Science 375, eabj1186 (2022). A comprehensive review of the critical role of A-site cations on structural stability, optoelectronic properties and device performance.

Article  CAS  PubMed  Google Scholar 

Mosconi, E. & De Angelis, F. Mobile ions in organohalide perovskites: interplay of electronic structure and dynamics. ACS Energy Lett. 1, 182–188 (2016).

Article  CAS  Google Scholar 

Ghosh, D., Aziz, A., Dawson, J. A., Walker, A. B. & Islam, M. S. Putting the squeeze on lead iodide perovskites: pressure-induced effects to tune their structural and optoelectronic behavior. Chem. Mater. 31, 4063–4071 (2019).

Article  CAS  PubMed  PubMed Central  Google Scholar 

Chen, B. et al. Large electrostrictive response in lead halide perovskites. Nat. Mater. 17, 1020–1026 (2018).