Photoluminescent properties of white-light-emitting Li6Y(BO3)3:Dy3+ phosphor

Structural, luminescence and thermometric properties of nanocrystalline YVO4:Dy3+ temperature and concentration series

“…The higher the calculated parameter is, the more apart from a centrosymmetric geometry luminescent center is located. It is well-known that if Dy 3+ is located at low symmetry without the inversion symmetry, the yellow emission is the most intense of all the transitions, as is the case with our synthesized nanocrystalline phosphors 58 . Figure 9 shows the dependence of R value, calculated from emission spectra obtained upon 365 nm excitation, on Dy 3+ doping concentration for YVO 4 host.…”

Luminescence and biological properties of Ag doped Dy:(ZnO–Li2O–Na2O–P2O5) glass

“…The excitation spectra measured using the strong Dy 3+ emission at 573 nm are given in Figure 5(b). The sharp excitation peaks between 290–400 nm are characteristic of transitions of electrons from the 6 H 15/2 ground state of Dy 3+ ions to various excited levels, as given by Fawad et al [22]. The broadband centred at 250 nm was absent for sample DS0 and weak for sample DS1.…”

Optical Spectroscopy of Li6Y(BO3)3 Single Crystals Doped with Dysprosium

“…For this reason, they are recognized as good matrices for laser applications [1][2][3]. Some of these, e.g., lithium borates, are attractive materials for neutron detectors due to the presence of naturally abundant 6 Li and 10 B isotopes [4][5][6][7][8][9]. Lithium yttrium borate (Li 6 Y(BO 3 ) 3 , LYB) has been suggested as a phosphor, laser, or scintillator material depending on the host morphology and rare-earth (RE) ion doping [10][11][12][13].…”

“…Some of these, e.g., lithium borates, are attractive materials for neutron detectors due to the presence of naturally abundant 6 Li and 10 B isotopes [4][5][6][7][8][9]. Lithium yttrium borate (Li 6 Y(BO 3 ) 3 , LYB) has been suggested as a phosphor, laser, or scintillator material depending on the host morphology and rare-earth (RE) ion doping [10][11][12][13]. This compound with monoclinic crystal structure of the P2 1 /c space group (Z = 4) [14] and the unit cell parameters a = 7.157 (5) Å, b = 16.378(4) Å, c = 6.623(4) Å, β = 105.32 (5) • [15] is an excellent host for RE doping, since it contains yttrium sites of only one type which can incorporate any RE dopant without concentration restrictions, as all Li 6 RE(BO 3 ) 3 crystals are isostructural with Li 6 Y(BO 3 ) 3 [16].…”

“…This sensitive energy transfer to the Dy 3+ ions through the excited Yb 3+ states and a stable borate host matrix establish the potential of using dysprosium doped LYB crystals in quantum optical experiments. Preliminary spectroscopic studies of Dy-doped Li 6 Y(BO 3 ) 3 have been performed for polycrystalline phosphors [10], glasses [12], and recently, single crystals [24]. These studies revealed the spectral positions and temporal characteristics of the main electronic transitions of Dy 3+ in the material, however, did not provide information on fine structure of the transitions necessary to fully identify the crystal field splitting of Dy 3+ ion states introduced in such an anisotropic matrix.…”