Luminescence of Eu3+, Tb3+ and Tm3+ in SrLaGa3O7

Upconversion-induced ultraviolet emission in Ho3+ doped SrLaGa3O7 and SrLaGaO4 crystals

“…Whereas, the optical and laser properties of Nd 3+ , Pr 3+ , Er 3+ , Eu 3+ , Dy 3+ , Tm 3+ doped SrLaGa 3 O 7 [2,[5][6][7][8] and Nd 3+ , Eu 3+ , Yb 3+ doped SrLaGaO 4 [3,4] have been reported, the spectroscopic data on Ho 3+ doped SLG and SLO crystals have not been, to our knowledge, presented. Holmium ion has been chosen as a dopant because it shows laser action at different wavelengths, from 550 nm to 3.9 m, in a variety of hosts [9] and offers various upconversion mechanisms [10][11][12][13] which may be enhanced in SLG and SLO system because of their structural properties.…”

Photoluminescent properties of Tb3+ doped GdSrAl3O7 nanophosphor using solution combustions synthesis

“…A 2+ ions and B 3+ ions are randomly distributed inbetween the layers occupying the eight coordinated sites with Cs symmetry while C 3+ cations occupy two non-equivalent tetragonal sites with site symmetries S 4 and Cs respectively. [21][22][23][24][25][26] In the rare-earth family, trivalent terbium ion is a significant dopant with strong emission around 544 nm which is found to be very close to the theoretical optimum wavelength for the green component of three primary color centers. [27] Tb 3+ doped phosphors have been proved excellent green luminescent materials to replace commercially available Mn 2+ doped phosphors due to better thermal stability, high brightness, less out gassing, chemical inertness and shorter decay time.…”

Synthesis and luminescent properties of GdSrAl3O7:Tb3+ phosphor under VUV/UV excitation

“…Some oxide compounds with aluminate, borate and silicate groups have a strong absorption in the VUV region [4]. Recently, compounds of the aluminate doped with rare earth ions family seem to be promising for high luminescent efficiency and good thermal stability [5][6][7][8]. Therefore, aluminate is a good candidate for PDPs phosphors.…”

“…The compound structures are formed by five-membered rings constructed from AlO 4 5− tetrahedral linked at each corner. The rare earth ions and Sr 2+ ions are located at the centers of these rings [6]. As a new path to synthesize some superfine powdered materials, ethylenediamine tetraacetic acid (EDTA)-sol-gel method has advantages of the stoichiometric control and good homogeneity through mixing at the molecular level in solution since EDTA anions chelate metal ions with big stability while polyethylene glycol (PEG) can greatly restrict metal ion from polymerization and achieve a homogeneous gel.…”