Site selective spectroscopy of Eu3+ in heavy-metal oxide glasses

Optical properties of lead borate glasses containing Dy3+ions

“…The yellow-to-blue luminescence due to 4 F 9/2 → 6 H 15/2 and 4 F 9/2 → 6 H 13/2 transitions has been analyzed as a function of Dy 3+ content. The 4 F 9/2 → 6 H 13/2 transition is hypersensitive and its luminescence intensity strongly depends on the host, in comparison to the less sensitive 4…”

“…During the past decades, rare earth and/or transition metal containing heavy metal lead glasses based on PbO-XO 2 (X = Ge [1], Si [2] or Te [3]), PbO-Y 2 O 3 (Y = Bi and/or Ga [4][5][6][7][8]) and PbO-Z 2 O 5 (Z = P [9] or Nb [10]) have been extensively studied using optical spectroscopy. Of these, PbO-B 2 O 3 based glasses are attractive optical materials due to their unique structural and physicochemical properties [11][12][13].…”

XRD and FTIR structural investigations of erbium-doped bismuth–lead–silver glasses and glass ceramics

“…Due to these properties, the use of the mentioned glasses provides the possibility of developing more efficient lasers and fiber optic amplifiers [3][4][5][6]. Despite the fact that Bi 2 O 3 is not a classical glass former, due to the high polarizability of the Bi 3+ ions, in the presence of other glass formers such as B 2 O 3 [7], PbO [8][9][10], V 2 O 5 [11] or of some alkali oxides (i.e., lithium oxide) [12], it may build up a glass network.…”

Effects of High Pressure on the Luminescence Spectra of Eu(SO4)2·NH4 Microcrystals: Anisotropically Induced Structural Distortions

“…It is well-known that information on the nature of R 3+ environments, in terms of symmetry and covalence of bonds to the ligands, can be derived from the crystal field analysis of the optical spectra of R 3+ centers in their hosts. From this point of view, changes around R 3+ involving variations in symmetry, interatomic distances, and covalence with neighboring ligands, as for those that result from the partial or total substitution for other R 3+ , − or by tuning temperature and pressure, are usually tested from the crystal field analysis of spectroscopic data derived from optical absorption, photoluminescence (including the fluorescence line narrowing technique, for glass materials), and inelastic neutron scattering experiments.…”