Titolo:  Formation mechanisms and phase stability of solid-state grown cspbi3 perovskites
Data di pubblicazione:  2021
Autori:  Satta, J.; Casu, A.; Chiriu, D.; Carbonaro, C. M.; Stagi, L.; Ricci, P. C.
Numero degli autori:  6
Lingua:  Inglese
Presenza coautori internazionali: 
Volume:  11
Fascicolo:  7
Numero dell’articolo:  1823
Pagina iniziale:  1
Pagina finale:  16
Numero di pagine:  16
Digital Object Identifier (DOI):  http://dx.doi.org/10.3390/nano11071823
Codice identificativo Pubmed:  34361209
Codice identificativo Scopus:  2-s2.0-85109639305
Codice identificativo ISI:  WOS:000676480600001
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.
Parole chiave:  sCsPbI3; inorganic lead halide perovskites; solid-state synthesis; phase stability
Tipologia: 1.1 Articolo in rivista

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