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Formation Mechanisms and Phase Stability of Solid-State Grown CsPbI3 Perovskites

1
Department of Physics, Campus of Monserrato, University of Cagliari, 09042 Monserrato, Italy
2
Nabla Lab, Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
3
Laboratory of Materials Science and Nanotechnology, CR-INSTM, Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Efrat Lifshitz
Nanomaterials 2021, 11(7), 1823; https://doi.org/10.3390/nano11071823
Received: 10 June 2021 / Revised: 7 July 2021 / Accepted: 8 July 2021 / Published: 14 July 2021
CsPbI3 inorganic perovskite is synthesized by a solvent-free, solid-state reaction, and its structural and optical properties can be deeply investigated using a multi-technique approach. X-ray Diffraction (XRD) and Raman measurements, optical absorption, steady-time and time-resolved luminescence, as well as High-Resolution Transmission Electron Microscopy (HRTEM) imaging, were exploited to understand phase evolution as a function of synthesis time length. Nanoparticles with multiple, well-defined crystalline domains of different crystalline phases were observed, usually surrounded by a thin, amorphous/out-of-axis shell. By increasing the synthesis time length, in addition to the pure α phase, which was rapidly converted into the δ phase at room temperature, a secondary phase, Cs4PbI6, was observed, together with the 715 nm-emitting γ phase. View Full-Text
Keywords: CsPbI3; inorganic lead halide perovskites; solid-state synthesis; phase stability CsPbI3; inorganic lead halide perovskites; solid-state synthesis; phase stability
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MDPI and ACS Style

Satta, J.; Casu, A.; Chiriu, D.; Carbonaro, C.M.; Stagi, L.; Ricci, P.C. Formation Mechanisms and Phase Stability of Solid-State Grown CsPbI3 Perovskites. Nanomaterials 2021, 11, 1823. https://doi.org/10.3390/nano11071823

AMA Style

Satta J, Casu A, Chiriu D, Carbonaro CM, Stagi L, Ricci PC. Formation Mechanisms and Phase Stability of Solid-State Grown CsPbI3 Perovskites. Nanomaterials. 2021; 11(7):1823. https://doi.org/10.3390/nano11071823

Chicago/Turabian Style

Satta, Jessica, Alberto Casu, Daniele Chiriu, Carlo M. Carbonaro, Luigi Stagi, and Pier C. Ricci 2021. "Formation Mechanisms and Phase Stability of Solid-State Grown CsPbI3 Perovskites" Nanomaterials 11, no. 7: 1823. https://doi.org/10.3390/nano11071823

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