Luminescent properties of EuGa2S4:Er3+

Photoluminescence of EuGa<sub>2</sub>Se<sub>4</sub>:Nd<sup>3+</sup>

“…It is known that the broad emission band is usually observed in crystals containing Eu 2+ . The energy position of luminescence band, caused by Eu 2+ , changes in the dependence on crystal structure and percentage of Eu 2+ [11]. The observable PL in region 700 -900 nm (maxima at wave lengths 709 nm and 745 nm) is caused by electron-hall recombination.…”

Luminescence properties of stoichiometric EuM2S4 (M = Ga, Al) conversion phosphors for white LED applications

“…Iida et al 16 reported that the emission of EuGa 2 S 4 in the 510–620 nm wavelength range has a high quantum efficiency value reaching 100% at low temperature. Georgobiani et al 17 reported that EuGa 2 S 4 :Er 3+ crystals exhibit both Stokes and anti‐Stokes luminescence properties. Although several feasibility studies of laser application to EuGa 2 S 4 single crystals were reported, to the best of our knowledge, there are no reports on the use of EuGa 2 S 4 powder as a highly efficient phosphor for pc‐LEDs.…”

Investigation of the phenomenon of current transition EuGa-=SUB=-2-=/SUB=-S-=SUB=-4-=/SUB=-:Er-=SUP=-3+-=/SUP=- crystals

“…Europium tetrachalcogenides EuGa 2 S 4 from group AB III 2 C VI 4 (A -Eu, Yb, Dy; B -Ga, In; C -S, Se, Te) with an incomplete inner 4 f shell, which are activated by rare-earth elements (specifically, erbium), have been studied extensively since the moment of their synthesis, and several intriguing physical properties have been revealed in the process. A considerable number of papers [1][2][3][4][5][6] focused on the photo-, electro-, and thermoluminescence properties of these crystals have already been published. The results of experiments performed in these studies provided an opportunity to determine certain key parameters of photoluminescence (red shift, Stokes shift, lifetime of Er 3+ ions, etc.…”