Distribution of luminescent centers in Ce3+-ion doped amorphous stoichiometric glass BaO–2SiO2 and dedicated glass ceramics

Abstract

a b s t r a c tWe investigated the influence of crystallization conditions on the luminescent properties of Ce 3+ -ions doped stoichiometric glass BaO-2SiO 2 at the different stages of its transformation from amorphous phase to glass ceramics. The samples were investigated by confocal luminescence spectroscopy. It was found that the luminescent properties of the cerium-doped glass and the glassceramics composite consisting of BaSi 2 O 5 crystallites and residual glass are quite similar, though the luminescence band in the composites are slightly redshifted and narrower.

Nanoscale Engineering of Inorganic Composite Scintillation Materials

“…In a glass and glass ceramic, the incorporation of modifying ions into the glass net, as a rule, does not positively affect their scintillation properties. However, prominent scintillation properties were obtained with the glass and glass ceramics obtained from binary (Li 2 O-2SiO 2 ; BaO-2SiO 2 ) and ternary [11][12][13] compositions. The aluminum ion, up to some critical concentration of~7 at.%, remains a net creating ion, similarly to a silicon ion, and occupies an oxygen tetrahedron.…”

“…It is worth noting that lithium glass has low density and therefore is practically useless for the design of detecting elements for the detection of other types of ionizing radiation, particularly the γ-quanta of different energies. On contrary, a barium-silicate glass made from a stochiometric composition, such as BaO 2 -SiO 2 , allows for a high concentration of Ce 3+ ions [11,12]. Furthermore, glass made on the basis of barium-RE silicate composition also demonstrates a capability to incorporate Ce 3+ with a relatively large quantity.…”