Luminescent properties of glassy and crystallized (Li2B4O7 + xB2O3)0.999(CuO)0.001 (x = 0−16.67 mol %) materials

EXAFS and EPR analysis of the local structure of Mn‐doped Li2B4O7

“…EPR is a technique for studying chemical species that have one or more unpaired electrons. Prior EPR 48–50 and optical 47, 49, 51–53 investigations of the doped Li 2 B 4 O 7 :Mn single crystals and glasses have been interpreted as Mn entering the Li 2 B 4 O 7 lattice as Mn 2+ ions, and into the Li 2 B 4 O 7 glass structure in the form of Mn 2+ and Mn 3+ . In prior work, it has been suggested that the Mn dopant takes the place of Li + in a deformed tetrahedral oxygen environment.…”

X-Ray Luminescence of Crystallized Silver, Copper and Manganese-Doped Lithium Tetraborate

“…The most promising from this point of view are the copper, silver and manganese dopants, for which the best photoluminescence characteristic indices were achieved [1][2][3][4][5][6][7][8][9] dependent on the criteria of the choice of the dopant type. In the most, such studies have been carried out for the monocrystalline lithium tetraborate--based phosphorus.…”

X-ray luminescence and spectroscopic characteristics of Er3+ ions in a glassy lithium tetraborate matrix

“…Generally, impurity REEs enter the composition of these borates as triply charged ions, which interact with the electron and hole traps of disordered matrix [9][10][11][12]. Note that the positions occupied by REE ions in the Li 2 B 4 O 7 framework are spaced at a rather large distance, which facilitates their intrinsic luminescence [21][22][23][24].…”

“…It is known [2,3,5,9,10] that the type of activator in a lithium tetraborate matrix affects significantly its luminescence characteristics and the potential of their practical application. The luminescence properties are related to the energy structure of the pseudoband gap of glassy Li 2 B 4 O 7 , which has some features in the case of wide-gap insulators [5,11,12].…”