Luminescence of silylene centers on surface of mechanically activated dioxide

Blue and ultraviolet luminescence centers in the surface of mechanically activated silicon dioxide are investigated. Emission and excitation luminescence spectra, life times of the centres in electron-excited state are measured. Reactivity of luminescenting defects during interaction with various gases (O2, CO, H2, H·, N2O) is determined. As a result of a detailed study of optical and chemical properties of the luminescence centres their identity with surface double coordinated silicon atoms or silylene centres =Si: is proved. Energy diagram of levels and electron transitions in the centre of luminescence is suggested