Synthesis and optical properties of Eu3+ ion-doped La2O2S2 via a solid state reaction method using La2O2SO4 as a raw material

Green synthesis, structure feature and energy transfer of yellow‐emitting (Y,Gd)2O2SO4:Dy phosphors

“…A good dispersion and a narrow size distribution would provide uniform luminescence over the whole phosphor screen. [2,3] Rare-earth oxysulfate-based (Ln 2 O 2 SO 4 ) materials with good chemical and thermal stabilities have extensive application in various fields [4] such as fluorescence, [5] scintillation, [6] oxygen storage, [7][8][9] electrochemical sensing, [10] as catalysts, [11] and for temperature sensitivity, [12] and also as the intermediate phase for the target oxidation product of Ln 2 O 3 or reduction product of Ln 2 O 2 S. [8] Y 2 O 2 SO 4 and Gd 2 O 2 SO 4 are two typical oxysulfates that both belong to monoclinic crystal systems an can be used as excellent matrix materials for highly effective downconversion and upconversion luminescence due to their high absorption cross-section and low phonon energy. [12][13][14][15][16][17] The latter has a relatively high theoretical density compared with the former, as Gd 3+ is much heavier than Y 3+ .…”

High-temperature oxidation of europium (II) sulfide

“…Doped oxysulfates (Ln 1-x Eu x ) 2 O 2 SO 4 are promising for the use as highly efficient phosphors when excited by ultraviolet light or X-rays. The compounds enhanced their thermal stability and effective, reproducible luminescence characteristics [33][34][35][36][37][38][39][40][41]. However, to our best knowledge, the data on the structural and spectroscopic properties of stoichiometric europium oxysulfate Eu 2 O 2 SO 4 are absent in the literature.…”