Oxysulfide optical ceramics doped by Nd3+ for one micron lasing

Fluctuation kinetics of the hopping fluorescence quenching in disordered solid solutions: A theoretical model and experimental evidence

“…[23], where experimental details were given. However the data for nonradiative energy transfer with energy migration in 100% concentrated terbium powder sample have been explained via an empirical formula, which is widely used elsewhere [16][17][18][19][20][21] but has no rigorous deduction. So in this work we investigate and explain these data using the results of the theoretical work published in Ref.…”

“…Expanding Eq. (6) in a series over small a and retaining the linear terms we obtain the well-known binary migration accelerated stage of kinetics [4][5][6][7] that follows just after the initial static stage and is commonly used for experimental data interpretation [3,[16][17][18][19][20][21]:…”

Combustion synthesis and up-conversion luminescence of La2O2S:Er3+,Yb3+ nanophosphors

“…For instance, rare-earth doped R 2 O 2 S oxysulfides are effective phosphors such as the red emitter under cathode-ray excitation (e.g. Y 2 O 2 S:Eu) applied in TV field [9] and are also extensively studied as laser materials in the form of single crystals [10,11] or ceramics [12]. Considering their relatively low phonon energy (∼500cm -1 ) due to sulfur atoms, good chemical/thermal stability due to oxygen atoms and low toxicity [8,13], mixed-anions materials like rare-earth oxysulfides are therefore promising hosts for up-conversion.…”

Preparation of Ln2O2S (Ln = Gd, Dy, Y, Er, Lu) in flowing hydrogen and hydrogen sulfide

“…Rare earth dioxysulfides with the general formula Ln 2 O 2 S are attractive optical materials [1][2][3]. The dioxysulfide Gd 2 O 2 S:Eu 3+ offers bright red lumines cence at 624 nm under excitation in the near UV (363 nm) or by X rays and has been prepared as parti cles ranging in size from 60 to 200 nm [1].…”

“…This spher ical monodisperse Gd 2 O 2 S:Eu 3+ nanophosphor can be thought of as a new, very promising fluorescent marker for biolabeling [1]. Orlovskii et al [2] studied a Gd 2 O 2 S:Nd 3+ solid solution as a key component of optical laser ceramics.…”