Formation of silver nanoparticles in photothermorefractive glasses during electron irradiation

New luminescent glasses and prospects of using them in solar energy

“…The broad-band luminescence in the visible region of potassium-aluminoborate glasses with copper chloride (I) is caused by the presence in the glass matrix of luminescence centers in the form of molecular clusters of Cu n Cl m and Cu n O m (n, m 2 10). 27 The possibility that such clusters exist is also confirmed by theoretical papers, in which stable configurations are obtained of clusters of Ag n O (n 1 7), 12 Ag n Cl (n 2 7), 15 and Cu n CO (n 1 9). 28 As the excitation wavelength varies, the luminescence-intensity maximum is displaced along the spectrum ( Fig.…”

Specific features of the formation of optical waveguides in silicate glass at high energy and doze of electron irradiation

“…The results of [6,9,12] show that the layered rather than monotonic distribution of positive ions results from electron irradiation. Note that the layer thickness increases with an increase in the distance from the sur face.…”

“…The numerical simula tion of [12] shows that nonmonotonic space charge distribution (space charge layers) is caused by electron irradiation of a dielectric material that contains posi tive charge carriers whose mobility differs from the electron mobility. The supporting experimental evi dence can be found in [6]. The above processes may affect the chemical composition and structure of glass in the irradiated region and the waveguide properties.…”

“…The methods are based on local variations in the com position, structure, or internal mechanical stress in glass that lead to a local increase in the refractive index. Electron beam irradiation of sodium silicate glasses that contain silver or copper ions results in the generation of the negative space charge in the surface glass layer and the consequent field migration of mobile positive metal ions (Ag + or Cu + ) from the bulk to the surface [5][6][7]. Such a redistribution of metal ions must lead to an increase in the refractive index in the surface layer (i.e., formation of optical waveguide).…”

The formation of silver nanoparticles on the surface of silver-containing glasses when they are irradiated with nanosecond laser pulses

“…7 The main effect used in this case is local amplification of the field amplitude of an electromagnetic wave when plasmon resonance occurs. Chemical reactions in liquid and polymeric media 8-10 electrochemical methods, 11 vacuum sputtering or laser ablation onto a substrate, 12 ion implantation, 13,14 the action of an electron beam, 15 heat treatment of silver-containing glasses in a reducing atmosphere, 16,17 and a number of other methods can be used to synthesize metallic nanoparticles.…”