Influence of the Heat Treatment Conditions on the Elemental Composition and Spectral Properties of Composite Materials Based on Silicate Porous Glass Doped by AgI and Er3+ Ions

Composite materials (CMs) doped by AgI and Er 3+ ions are synthesized based on high-silica porous glass matrices. The structures of the CMs are investigated by IR spectroscopy in the frequency range 1100–400 cm –1 . The IR transmission spectra of the CMs exhibit bands corresponding to vibrations of the Ag–O, Ag–O–Ag, Er–O–H, and Er–O bonds. In addition, bands that are caused by the presence of Ag 2 O, AgI, and Er 2 O 3 are found. Energy-dispersive X-ray spectroscopy shows that the conditions of treatment of CMs with heat have an effect on the concentration distribution of elements over the thickness of the samples.