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.

Formation mechanisms and phase stability of solid-state grown cspbi3 perovskites / Satta, J.; Casu, A.; Chiriu, D.; Carbonaro, C. M.; Stagi, L.; Ricci, P. C.. - In: NANOMATERIALS. - ISSN 2079-4991. - 11:7(2021), p. 1823. [10.3390/nano11071823]

Formation mechanisms and phase stability of solid-state grown cspbi3 perovskites

Stagi L.
Membro del Collaboration Group
;
2021

Abstract

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.
Formation mechanisms and phase stability of solid-state grown cspbi3 perovskites / Satta, J.; Casu, A.; Chiriu, D.; Carbonaro, C. M.; Stagi, L.; Ricci, P. C.. - In: NANOMATERIALS. - ISSN 2079-4991. - 11:7(2021), p. 1823. [10.3390/nano11071823]
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11388/247842
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