The behaviour of osmium ions in the tetrahedral oxygen coordination

In this work, the absorption spectrum of Bi12SiO20:Os is investigated. The crystal changes its state from the untreated to the illuminated. The experiment is conducted at the room temperature in the spectral region 1.6–2.2 eV. The energetic diagram of the electron transitions in Os5+ is presented. The Schrodinger equation is solved for the Os5+ ions which are chemically bonded with the oxygen ions.