Silicene and multilayer silicene have been synthesised on the a-phase Si(111)√3×√3R30°- Bi1). The electronic and structural properties of the Si films have been investigated by LEED/AES/REELS, grazing-incidence X-ray diffraction (GIXRD), as well as STM and STS. At the Si K absorption edge, REELS revealed two distinct loss structures identified as 1sàp* and 1sàs* transitions, attesting the sp2-like hybridization of the Si valence orbitals. LEED/GIXRD/STM and STS data confirmed these findings.

Fully-inorganic CsPbBr3 on Si(111) and lead-free Cs2AgBiBr6 films will be presented.

1) D. Garagnani, P. De Padova, C. Ottaviani, C. Quaresima, A. Generosi, B. Paci, B. Olivieri, M. Jałochowski and M. Krawiec, Materials 2022, 15, 1730. https://doi.org/10.3390/ma15051730